1380 lines
42 KiB
Factor
Executable File
1380 lines
42 KiB
Factor
Executable File
! Copyright (C) 2006 Chris Double.
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! See http://factorcode.org/license.txt for BSD license.
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!
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USING: accessors kernel math sequences words arrays io io.files
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math.parser assocs quotations parser lexer
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peg peg.ebnf peg.parsers tools.time io.encodings.binary sequences.deep
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symbols combinators fry namespaces ;
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IN: cpu.8080.emulator
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TUPLE: cpu b c d e f h l a pc sp halted? last-interrupt cycles ram ;
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GENERIC: reset ( cpu -- )
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GENERIC: update-video ( value addr cpu -- )
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GENERIC: read-port ( port cpu -- byte )
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GENERIC: write-port ( value port cpu -- )
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M: cpu update-video ( value addr cpu -- )
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3drop ;
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M: cpu read-port ( port cpu -- byte )
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#! Read a byte from the hardware port. 'port' should
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#! be an 8-bit value.
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2drop 0 ;
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M: cpu write-port ( value port cpu -- )
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#! Write a byte to the hardware port, where 'port' is
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#! an 8-bit value.
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3drop ;
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: carry-flag HEX: 01 ; inline
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: parity-flag HEX: 04 ; inline
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: half-carry-flag HEX: 10 ; inline
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: interrupt-flag HEX: 20 ; inline
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: zero-flag HEX: 40 ; inline
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: sign-flag HEX: 80 ; inline
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: >word< ( word -- byte byte )
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#! Explode a word into its two 8 bit values.
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dup HEX: FF bitand swap -8 shift HEX: FF bitand swap ;
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: cpu-af ( cpu -- word )
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#! Return the 16-bit pseudo register AF.
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[ cpu-a 8 shift ] keep cpu-f bitor ;
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: set-cpu-af ( value cpu -- )
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#! Set the value of the 16-bit pseudo register AF
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>r >word< r> tuck set-cpu-f set-cpu-a ;
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: cpu-bc ( cpu -- word )
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#! Return the 16-bit pseudo register BC.
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[ cpu-b 8 shift ] keep cpu-c bitor ;
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: set-cpu-bc ( value cpu -- )
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#! Set the value of the 16-bit pseudo register BC
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>r >word< r> tuck set-cpu-c set-cpu-b ;
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: cpu-de ( cpu -- word )
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#! Return the 16-bit pseudo register DE.
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[ cpu-d 8 shift ] keep cpu-e bitor ;
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: set-cpu-de ( value cpu -- )
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#! Set the value of the 16-bit pseudo register DE
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>r >word< r> tuck set-cpu-e set-cpu-d ;
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: cpu-hl ( cpu -- word )
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#! Return the 16-bit pseudo register HL.
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[ cpu-h 8 shift ] keep cpu-l bitor ;
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: set-cpu-hl ( value cpu -- )
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#! Set the value of the 16-bit pseudo register HL
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>r >word< r> tuck set-cpu-l set-cpu-h ;
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: flag-set? ( flag cpu -- bool )
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cpu-f bitand 0 = not ;
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: flag-clear? ( flag cpu -- bool )
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cpu-f bitand 0 = ;
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: flag-nz? ( cpu -- bool )
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#! Test flag status
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cpu-f zero-flag bitand 0 = ;
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: flag-z? ( cpu -- bool )
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#! Test flag status
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cpu-f zero-flag bitand 0 = not ;
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: flag-nc? ( cpu -- bool )
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#! Test flag status
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cpu-f carry-flag bitand 0 = ;
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: flag-c? ( cpu -- bool )
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#! Test flag status
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cpu-f carry-flag bitand 0 = not ;
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: flag-po? ( cpu -- bool )
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#! Test flag status
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cpu-f parity-flag bitand 0 = ;
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: flag-pe? ( cpu -- bool )
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#! Test flag status
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cpu-f parity-flag bitand 0 = not ;
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: flag-p? ( cpu -- bool )
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#! Test flag status
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cpu-f sign-flag bitand 0 = ;
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: flag-m? ( cpu -- bool )
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#! Test flag status
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cpu-f sign-flag bitand 0 = not ;
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: read-byte ( addr cpu -- byte )
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#! Read one byte from memory at the specified address.
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#! The address is 16-bit, but if a value greater than
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#! 0xFFFF is provided then return a default value.
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over HEX: FFFF <= [
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cpu-ram nth
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] [
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2drop HEX: FF
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] if ;
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: read-word ( addr cpu -- word )
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#! Read a 16-bit word from memory at the specified address.
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#! The address is 16-bit, but if a value greater than
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#! 0xFFFF is provided then return a default value.
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[ read-byte ] 2keep >r 1 + r> read-byte 8 shift bitor ;
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: next-byte ( cpu -- byte )
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#! Return the value of the byte at PC, and increment PC.
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[ cpu-pc ] keep
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[ read-byte ] keep
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[ cpu-pc 1 + ] keep
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set-cpu-pc ;
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: next-word ( cpu -- word )
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#! Return the value of the word at PC, and increment PC.
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[ cpu-pc ] keep
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[ read-word ] keep
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[ cpu-pc 2 + ] keep
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set-cpu-pc ;
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: write-byte ( value addr cpu -- )
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#! Write a byte to the specified memory address.
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over dup HEX: 2000 < swap HEX: FFFF > or [
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3drop
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] [
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3dup cpu-ram set-nth
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update-video
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] if ;
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: write-word ( value addr cpu -- )
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#! Write a 16-bit word to the specified memory address.
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>r >r >word< r> r> [ write-byte ] 2keep >r 1 + r> write-byte ;
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: cpu-a-bitand ( quot cpu -- )
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#! A &= quot call
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[ cpu-a swap call bitand ] keep set-cpu-a ; inline
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: cpu-a-bitor ( quot cpu -- )
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#! A |= quot call
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[ cpu-a swap call bitor ] keep set-cpu-a ; inline
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: cpu-a-bitxor ( quot cpu -- )
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#! A ^= quot call
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[ cpu-a swap call bitxor ] keep set-cpu-a ; inline
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: cpu-a-bitxor= ( value cpu -- )
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#! cpu-a ^= value
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[ cpu-a bitxor ] keep set-cpu-a ;
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: cpu-f-bitand ( quot cpu -- )
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#! F &= quot call
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[ cpu-f swap call bitand ] keep set-cpu-f ; inline
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: cpu-f-bitor ( quot cpu -- )
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#! F |= quot call
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[ cpu-f swap call bitor ] keep set-cpu-f ; inline
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: cpu-f-bitxor ( quot cpu -- )
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#! F |= quot call
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[ cpu-f swap call bitxor ] keep set-cpu-f ; inline
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: cpu-f-bitor= ( value cpu -- )
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#! cpu-f |= value
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[ cpu-f bitor ] keep set-cpu-f ;
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: cpu-f-bitand= ( value cpu -- )
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#! cpu-f &= value
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[ cpu-f bitand ] keep set-cpu-f ;
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: cpu-f-bitxor= ( value cpu -- )
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#! cpu-f ^= value
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[ cpu-f bitxor ] keep set-cpu-f ;
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: set-flag ( cpu flag -- )
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swap cpu-f-bitor= ;
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: clear-flag ( cpu flag -- )
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bitnot HEX: FF bitand swap cpu-f-bitand= ;
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: update-zero-flag ( result cpu -- )
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#! If the result of an instruction has the value 0, this
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#! flag is set, otherwise it is reset.
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swap HEX: FF bitand 0 = [ zero-flag set-flag ] [ zero-flag clear-flag ] if ;
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: update-sign-flag ( result cpu -- )
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#! If the most significant bit of the result
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#! has the value 1 then the flag is set, otherwise
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#! it is reset.
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swap HEX: 80 bitand 0 = [ sign-flag clear-flag ] [ sign-flag set-flag ] if ;
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: update-parity-flag ( result cpu -- )
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#! If the modulo 2 sum of the bits of the result
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#! is 0, (ie. if the result has even parity) this flag
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#! is set, otherwise it is reset.
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swap HEX: FF bitand 2 mod 0 = [ parity-flag set-flag ] [ parity-flag clear-flag ] if ;
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: update-carry-flag ( result cpu -- )
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#! If the instruction resulted in a carry (from addition)
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#! or a borrow (from subtraction or a comparison) out of the
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#! higher order bit, this flag is set, otherwise it is reset.
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swap dup HEX: 100 >= swap 0 < or [ carry-flag set-flag ] [ carry-flag clear-flag ] if ;
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: update-half-carry-flag ( original change-by result cpu -- )
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#! If the instruction caused a carry out of bit 3 and into bit 4 of the
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#! resulting value, the half carry flag is set, otherwise it is reset.
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#! The 'original' is the original value of the register being changed.
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#! 'change-by' is the amount it is being added or decremented by.
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#! 'result' is the result of that change.
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>r bitxor bitxor HEX: 10 bitand 0 = not r>
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swap [ half-carry-flag set-flag ] [ half-carry-flag clear-flag ] if ;
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: update-flags ( result cpu -- )
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2dup update-carry-flag
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2dup update-parity-flag
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2dup update-sign-flag
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update-zero-flag ;
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: update-flags-no-carry ( result cpu -- )
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2dup update-parity-flag
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2dup update-sign-flag
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update-zero-flag ;
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: add-byte ( lhs rhs cpu -- result )
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#! Add rhs to lhs
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>r 2dup + r> ! lhs rhs result cpu
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[ update-flags ] 2keep
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[ update-half-carry-flag ] 2keep
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drop HEX: FF bitand ;
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: add-carry ( change-by result cpu -- change-by result )
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#! Add the effect of the carry flag to the result
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flag-c? [ 1 + >r 1 + r> ] when ;
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: add-byte-with-carry ( lhs rhs cpu -- result )
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#! Add rhs to lhs plus carry.
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>r 2dup + r> ! lhs rhs result cpu
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[ add-carry ] keep
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[ update-flags ] 2keep
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[ update-half-carry-flag ] 2keep
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drop HEX: FF bitand ;
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: sub-carry ( change-by result cpu -- change-by result )
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#! Subtract the effect of the carry flag from the result
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flag-c? [ 1 - >r 1 - r> ] when ;
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: sub-byte ( lhs rhs cpu -- result )
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#! Subtract rhs from lhs
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>r 2dup - r>
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[ update-flags ] 2keep
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[ update-half-carry-flag ] 2keep
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drop HEX: FF bitand ;
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: sub-byte-with-carry ( lhs rhs cpu -- result )
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#! Subtract rhs from lhs and take carry into account
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>r 2dup - r>
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[ sub-carry ] keep
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[ update-flags ] 2keep
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[ update-half-carry-flag ] 2keep
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drop HEX: FF bitand ;
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: inc-byte ( byte cpu -- result )
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#! Increment byte by one. Note that carry flag is not affected
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#! by this operation.
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>r 1 2dup + r> ! lhs rhs result cpu
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[ update-flags-no-carry ] 2keep
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[ update-half-carry-flag ] 2keep
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drop HEX: FF bitand ;
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: dec-byte ( byte cpu -- result )
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#! Decrement byte by one. Note that carry flag is not affected
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#! by this operation.
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>r 1 2dup - r> ! lhs rhs result cpu
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[ update-flags-no-carry ] 2keep
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[ update-half-carry-flag ] 2keep
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drop HEX: FF bitand ;
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: inc-word ( w cpu -- w )
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#! Increment word by one. Note that no flags are modified.
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drop 1 + HEX: FFFF bitand ;
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: dec-word ( w cpu -- w )
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#! Decrement word by one. Note that no flags are modified.
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drop 1 - HEX: FFFF bitand ;
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: add-word ( lhs rhs cpu -- result )
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#! Add rhs to lhs. Note that only the carry flag is modified
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#! and only if there is a carry out of the double precision add.
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>r + r> over HEX: FFFF > [ carry-flag set-flag ] [ drop ] if HEX: FFFF bitand ;
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: bit3or ( lhs rhs -- 0|1 )
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#! bitor bit 3 of the two numbers on the stack
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BIN: 00001000 bitand -3 shift >r
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BIN: 00001000 bitand -3 shift r>
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bitor ;
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: and-byte ( lhs rhs cpu -- result )
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#! Logically and rhs to lhs. The carry flag is cleared and
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#! the half carry is set to the ORing of bits 3 of the operands.
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[ drop bit3or ] 3keep ! bit3or lhs rhs cpu
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>r bitand r> [ update-flags ] 2keep
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[ carry-flag clear-flag ] keep
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rot 0 = [ half-carry-flag set-flag ] [ half-carry-flag clear-flag ] if
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HEX: FF bitand ;
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: xor-byte ( lhs rhs cpu -- result )
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#! Logically xor rhs to lhs. The carry and half-carry flags are cleared.
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>r bitxor r> [ update-flags ] 2keep
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[ half-carry-flag carry-flag bitor clear-flag ] keep
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drop HEX: FF bitand ;
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: or-byte ( lhs rhs cpu -- result )
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#! Logically or rhs to lhs. The carry and half-carry flags are cleared.
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>r bitor r> [ update-flags ] 2keep
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[ half-carry-flag carry-flag bitor clear-flag ] keep
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drop HEX: FF bitand ;
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: flags ( seq -- seq )
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[ 0 [ execute bitor ] reduce ] map ;
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: decrement-sp ( n cpu -- )
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#! Decrement the stackpointer by n.
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[ cpu-sp ] keep
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>r swap - r> set-cpu-sp ;
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: save-pc ( cpu -- )
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#! Save the value of the PC on the stack.
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[ cpu-pc ] keep ! pc cpu
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[ cpu-sp ] keep ! pc sp cpu
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write-word ;
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: push-pc ( cpu -- )
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#! Push the value of the PC on the stack.
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2 over decrement-sp
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save-pc ;
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: pop-pc ( cpu -- pc )
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#! Pop the value of the PC off the stack.
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[ cpu-sp ] keep
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[ read-word ] keep
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-2 swap decrement-sp ;
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: push-sp ( value cpu -- )
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[ 2 swap decrement-sp ] keep
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[ cpu-sp ] keep
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write-word ;
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: pop-sp ( cpu -- value )
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[ cpu-sp ] keep
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[ read-word ] keep
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-2 swap decrement-sp ;
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: call-sub ( addr cpu -- )
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#! Call the address as a subroutine.
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dup push-pc
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>r HEX: FFFF bitand r> set-cpu-pc ;
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: ret-from-sub ( cpu -- )
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[ pop-pc ] keep set-cpu-pc ;
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: interrupt ( number cpu -- )
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#! Perform a hardware interrupt
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! "***Interrupt: " write over 16 >base print
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dup cpu-f interrupt-flag bitand 0 = not [
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dup push-pc
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set-cpu-pc
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] [
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2drop
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] if ;
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: inc-cycles ( n cpu -- )
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#! Increment the number of cpu cycles
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[ cpu-cycles + ] keep set-cpu-cycles ;
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: instruction-cycles ( -- vector )
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#! Return a 256 element vector containing the cycles for
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#! each opcode in the 8080 instruction set.
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<< 256 f <array> parsed >> ;
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: not-implemented ( <cpu> -- )
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drop ;
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: instructions ( -- vector )
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#! Return a 256 element vector containing the emulation words for
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#! each opcode in the 8080 instruction set.
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<< 256 [ [ not-implemented ] 2array ] map parsed >> ; inline
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: set-instruction ( quot n -- )
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tuck >r 2array r> instructions set-nth ;
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M: cpu reset ( cpu -- )
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#! Reset the CPU to its poweron state
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[ 0 swap set-cpu-b ] keep
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[ 0 swap set-cpu-c ] keep
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[ 0 swap set-cpu-d ] keep
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[ 0 swap set-cpu-e ] keep
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[ 0 swap set-cpu-h ] keep
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[ 0 swap set-cpu-l ] keep
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[ 0 swap set-cpu-a ] keep
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[ 0 swap set-cpu-f ] keep
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[ 0 swap set-cpu-pc ] keep
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[ HEX: F000 swap set-cpu-sp ] keep
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[ HEX: FFFF 0 <array> swap set-cpu-ram ] keep
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[ f swap set-cpu-halted? ] keep
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[ HEX: 10 swap set-cpu-last-interrupt ] keep
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0 swap set-cpu-cycles ;
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: <cpu> ( -- cpu ) cpu new dup reset ;
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: (load-rom) ( n ram -- )
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read1 [ ! n ram ch
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-rot [ set-nth ] 2keep >r 1 + r> (load-rom)
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] [
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2drop
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] if* ;
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#! Reads the ROM from stdin and stores it in ROM from
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#! offset n.
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: load-rom ( filename cpu -- )
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#! Load the contents of the file into ROM.
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#! (address 0x0000-0x1FFF).
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cpu-ram swap binary [
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0 swap (load-rom)
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] with-file-reader ;
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SYMBOL: rom-root
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: rom-dir ( -- string )
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rom-root get [ home "roms" append-path dup exists? [ drop f ] unless ] unless* ;
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: load-rom* ( seq cpu -- )
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#! 'seq' is an array of arrays. Each array contains
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#! an address and filename of a ROM file. The ROM
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#! file will be loaded at the specified address. This
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#! file path shoul dbe relative to the '/roms' resource path.
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rom-dir [
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cpu-ram [
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swap first2 rom-dir prepend-path binary [
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swap (load-rom)
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] with-file-reader
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] curry each
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] [
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!
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! the ROM files.
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"Set 'rom-root' to the path containing the root of the 8080 ROM files." throw
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] if ;
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: read-instruction ( cpu -- word )
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#! Read the next instruction from the cpu's program
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#! counter, and increment the program counter.
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[ cpu-pc ] keep ! pc cpu
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[ over 1 + swap set-cpu-pc ] keep
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read-byte ;
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: get-cycles ( n -- opcode )
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#! Returns the cycles for the given instruction value.
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#! If the opcode is not defined throw an error.
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dup instruction-cycles nth [
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nip
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] [
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[ "Undefined 8080 opcode: " % number>string % ] "" make throw
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] if* ;
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: process-interrupts ( cpu -- )
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#! Process any hardware interrupts
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[ cpu-cycles ] keep
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over 16667 < [
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2drop
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] [
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[ >r 16667 - r> set-cpu-cycles ] keep
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dup cpu-last-interrupt HEX: 10 = [
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HEX: 08 over set-cpu-last-interrupt HEX: 08 swap interrupt
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] [
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HEX: 10 over set-cpu-last-interrupt HEX: 10 swap interrupt
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] if
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] if ;
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: peek-instruction ( cpu -- word )
|
|
#! Return the next instruction from the cpu's program
|
|
#! counter, but don't increment the counter.
|
|
[ cpu-pc ] keep read-byte instructions nth first ;
|
|
|
|
: cpu. ( cpu -- )
|
|
[ " PC: " write cpu-pc 16 >base 4 CHAR: \s pad-left write ] keep
|
|
[ " B: " write cpu-b 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " C: " write cpu-c 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " D: " write cpu-d 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " E: " write cpu-e 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " F: " write cpu-f 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " H: " write cpu-h 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " L: " write cpu-l 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " A: " write cpu-a 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " SP: " write cpu-sp 16 >base 4 CHAR: \s pad-left write ] keep
|
|
[ " cycles: " write cpu-cycles number>string 5 CHAR: \s pad-left write ] keep
|
|
[ " " write peek-instruction name>> write " " write ] keep
|
|
nl drop ;
|
|
|
|
: cpu*. ( cpu -- )
|
|
[ " PC: " write cpu-pc 16 >base 4 CHAR: \s pad-left write ] keep
|
|
[ " B: " write cpu-b 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " C: " write cpu-c 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " D: " write cpu-d 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " E: " write cpu-e 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " F: " write cpu-f 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " H: " write cpu-h 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " L: " write cpu-l 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " A: " write cpu-a 16 >base 2 CHAR: \s pad-left write ] keep
|
|
[ " SP: " write cpu-sp 16 >base 4 CHAR: \s pad-left write ] keep
|
|
[ " cycles: " write cpu-cycles number>string 5 CHAR: \s pad-left write ] keep
|
|
nl drop ;
|
|
|
|
: register-lookup ( string -- vector )
|
|
#! Given a string containing a register name, return a vector
|
|
#! where the 1st item is the getter and the 2nd is the setter
|
|
#! for that register.
|
|
H{
|
|
{ "A" { cpu-a set-cpu-a } }
|
|
{ "B" { cpu-b set-cpu-b } }
|
|
{ "C" { cpu-c set-cpu-c } }
|
|
{ "D" { cpu-d set-cpu-d } }
|
|
{ "E" { cpu-e set-cpu-e } }
|
|
{ "H" { cpu-h set-cpu-h } }
|
|
{ "L" { cpu-l set-cpu-l } }
|
|
{ "AF" { cpu-af set-cpu-af } }
|
|
{ "BC" { cpu-bc set-cpu-bc } }
|
|
{ "DE" { cpu-de set-cpu-de } }
|
|
{ "HL" { cpu-hl set-cpu-hl } }
|
|
{ "SP" { cpu-sp set-cpu-sp } }
|
|
} at ;
|
|
|
|
|
|
: flag-lookup ( string -- vector )
|
|
#! Given a string containing a flag name, return a vector
|
|
#! where the 1st item is a word that tests that flag.
|
|
H{
|
|
{ "NZ" { flag-nz? } }
|
|
{ "NC" { flag-nc? } }
|
|
{ "PO" { flag-po? } }
|
|
{ "PE" { flag-pe? } }
|
|
{ "Z" { flag-z? } }
|
|
{ "C" { flag-c? } }
|
|
{ "P" { flag-p? } }
|
|
{ "M" { flag-m? } }
|
|
} at ;
|
|
|
|
SYMBOLS: $1 $2 $3 $4 ;
|
|
|
|
: replace-patterns ( vector tree -- tree )
|
|
[
|
|
{
|
|
{ $1 [ first ] }
|
|
{ $2 [ second ] }
|
|
{ $3 [ third ] }
|
|
{ $4 [ fourth ] }
|
|
[ nip ]
|
|
} case
|
|
] with deep-map ;
|
|
|
|
: (emulate-RST) ( n cpu -- )
|
|
#! RST nn
|
|
[ cpu-sp 2 - dup ] keep ! sp sp cpu
|
|
[ set-cpu-sp ] keep ! sp cpu
|
|
[ cpu-pc ] keep ! sp pc cpu
|
|
swapd [ write-word ] keep ! cpu
|
|
>r 8 * r> set-cpu-pc ;
|
|
|
|
: (emulate-CALL) ( cpu -- )
|
|
#! 205 - CALL nn
|
|
[ next-word HEX: FFFF bitand ] keep ! addr cpu
|
|
[ cpu-sp 2 - dup ] keep ! addr sp sp cpu
|
|
[ set-cpu-sp ] keep ! addr sp cpu
|
|
[ cpu-pc ] keep ! addr sp pc cpu
|
|
swapd [ write-word ] keep ! addr cpu
|
|
set-cpu-pc ;
|
|
|
|
: (emulate-RLCA) ( cpu -- )
|
|
#! The content of the accumulator is rotated left
|
|
#! one position. The low order bit and the carry flag
|
|
#! are both set to the value shifd out of the high
|
|
#! order bit position. Only the carry flag is affected.
|
|
[ cpu-a -7 shift ] keep
|
|
over 0 = [ dup carry-flag clear-flag ] [ dup carry-flag set-flag ] if
|
|
[ cpu-a 1 shift HEX: FF bitand ] keep
|
|
>r bitor r> set-cpu-a ;
|
|
|
|
: (emulate-RRCA) ( cpu -- )
|
|
#! The content of the accumulator is rotated right
|
|
#! one position. The high order bit and the carry flag
|
|
#! are both set to the value shifd out of the low
|
|
#! order bit position. Only the carry flag is affected.
|
|
[ cpu-a 1 bitand 7 shift ] keep
|
|
over 0 = [ dup carry-flag clear-flag ] [ dup carry-flag set-flag ] if
|
|
[ cpu-a 254 bitand -1 shift ] keep
|
|
>r bitor r> set-cpu-a ;
|
|
|
|
: (emulate-RLA) ( cpu -- )
|
|
#! The content of the accumulator is rotated left
|
|
#! one position through the carry flag. The low
|
|
#! order bit is set equal to the carry flag and
|
|
#! the carry flag is set to the value shifd out
|
|
#! of the high order bit. Only the carry flag is
|
|
#! affected.
|
|
[ carry-flag swap flag-set? [ 1 ] [ 0 ] if ] keep
|
|
[ cpu-a 127 bitand 7 shift ] keep
|
|
dup cpu-a 128 bitand 0 = [ dup carry-flag clear-flag ] [ dup carry-flag set-flag ] if
|
|
>r bitor r> set-cpu-a ;
|
|
|
|
: (emulate-RRA) ( cpu -- )
|
|
#! The content of the accumulator is rotated right
|
|
#! one position through the carry flag. The high order
|
|
#! bit is set to the carry flag and the carry flag is
|
|
#! set to the value shifd out of the low order bit.
|
|
#! Only the carry flag is affected.
|
|
[ carry-flag swap flag-set? [ BIN: 10000000 ] [ 0 ] if ] keep
|
|
[ cpu-a 254 bitand -1 shift ] keep
|
|
dup cpu-a 1 bitand 0 = [ dup carry-flag clear-flag ] [ dup carry-flag set-flag ] if
|
|
>r bitor r> set-cpu-a ;
|
|
|
|
: (emulate-CPL) ( cpu -- )
|
|
#! The contents of the accumulator are complemented
|
|
#! (zero bits become one, one bits becomes zero).
|
|
#! No flags are affected.
|
|
HEX: FF swap cpu-a-bitxor= ;
|
|
|
|
: (emulate-DAA) ( cpu -- )
|
|
#! The eight bit number in the accumulator is
|
|
#! adjusted to form two four-bit binary-coded-decimal
|
|
#! digits.
|
|
[
|
|
dup half-carry-flag swap flag-set? swap
|
|
cpu-a BIN: 1111 bitand 9 > or [ 6 ] [ 0 ] if
|
|
] keep
|
|
[ cpu-a + ] keep
|
|
[ update-flags ] 2keep
|
|
[ swap HEX: FF bitand swap set-cpu-a ] keep
|
|
[
|
|
dup carry-flag swap flag-set? swap
|
|
cpu-a -4 shift BIN: 1111 bitand 9 > or [ 96 ] [ 0 ] if
|
|
] keep
|
|
[ cpu-a + ] keep
|
|
[ update-flags ] 2keep
|
|
swap HEX: FF bitand swap set-cpu-a ;
|
|
|
|
: patterns ( -- hashtable )
|
|
#! table of code quotation patterns for each type of instruction.
|
|
H{
|
|
{ "NOP" [ drop ] }
|
|
{ "RET-NN" [ ret-from-sub ] }
|
|
{ "RST-0" [ 0 swap (emulate-RST) ] }
|
|
{ "RST-8" [ 8 swap (emulate-RST) ] }
|
|
{ "RST-10H" [ HEX: 10 swap (emulate-RST) ] }
|
|
{ "RST-18H" [ HEX: 18 swap (emulate-RST) ] }
|
|
{ "RST-20H" [ HEX: 20 swap (emulate-RST) ] }
|
|
{ "RST-28H" [ HEX: 28 swap (emulate-RST) ] }
|
|
{ "RST-30H" [ HEX: 30 swap (emulate-RST) ] }
|
|
{ "RST-38H" [ HEX: 38 swap (emulate-RST) ] }
|
|
{ "RET-F|FF" [ dup $1 [ 6 over inc-cycles ret-from-sub ] [ drop ] if ] }
|
|
{ "CP-N" [ [ cpu-a ] keep [ next-byte ] keep sub-byte drop ] }
|
|
{ "CP-R" [ [ cpu-a ] keep [ $1 ] keep sub-byte drop ] }
|
|
{ "CP-(RR)" [ [ cpu-a ] keep [ $1 ] keep [ read-byte ] keep sub-byte drop ] }
|
|
{ "OR-N" [ [ cpu-a ] keep [ next-byte ] keep [ or-byte ] keep set-cpu-a ] }
|
|
{ "OR-R" [ [ cpu-a ] keep [ $1 ] keep [ or-byte ] keep set-cpu-a ] }
|
|
{ "OR-(RR)" [ [ cpu-a ] keep [ $1 ] keep [ read-byte ] keep [ or-byte ] keep set-cpu-a ] }
|
|
{ "XOR-N" [ [ cpu-a ] keep [ next-byte ] keep [ xor-byte ] keep set-cpu-a ] }
|
|
{ "XOR-R" [ [ cpu-a ] keep [ $1 ] keep [ xor-byte ] keep set-cpu-a ] }
|
|
{ "XOR-(RR)" [ [ cpu-a ] keep [ $1 ] keep [ read-byte ] keep [ xor-byte ] keep set-cpu-a ] }
|
|
{ "AND-N" [ [ cpu-a ] keep [ next-byte ] keep [ and-byte ] keep set-cpu-a ] }
|
|
{ "AND-R" [ [ cpu-a ] keep [ $1 ] keep [ and-byte ] keep set-cpu-a ] }
|
|
{ "AND-(RR)" [ [ cpu-a ] keep [ $1 ] keep [ read-byte ] keep [ and-byte ] keep set-cpu-a ] }
|
|
{ "ADC-R,N" [ [ $1 ] keep [ next-byte ] keep [ add-byte-with-carry ] keep $2 ] }
|
|
{ "ADC-R,R" [ [ $1 ] keep [ $3 ] keep [ add-byte-with-carry ] keep $2 ] }
|
|
{ "ADC-R,(RR)" [ [ $1 ] keep [ $3 ] keep [ read-byte ] keep [ add-byte-with-carry ] keep $2 ] }
|
|
{ "ADD-R,N" [ [ $1 ] keep [ next-byte ] keep [ add-byte ] keep $2 ] }
|
|
{ "ADD-R,R" [ [ $1 ] keep [ $3 ] keep [ add-byte ] keep $2 ] }
|
|
{ "ADD-RR,RR" [ [ $1 ] keep [ $3 ] keep [ add-word ] keep $2 ] }
|
|
{ "ADD-R,(RR)" [ [ $1 ] keep [ $3 ] keep [ read-byte ] keep [ add-byte ] keep $2 ] }
|
|
{ "SBC-R,N" [ [ $1 ] keep [ next-byte ] keep [ sub-byte-with-carry ] keep $2 ] }
|
|
{ "SBC-R,R" [ [ $1 ] keep [ $3 ] keep [ sub-byte-with-carry ] keep $2 ] }
|
|
{ "SBC-R,(RR)" [ [ $1 ] keep [ $3 ] keep [ read-byte ] keep [ sub-byte-with-carry ] keep $2 ] }
|
|
{ "SUB-R" [ [ cpu-a ] keep [ $1 ] keep [ sub-byte ] keep set-cpu-a ] }
|
|
{ "SUB-(RR)" [ [ cpu-a ] keep [ $1 ] keep [ read-byte ] keep [ sub-byte ] keep set-cpu-a ] }
|
|
{ "SUB-N" [ [ cpu-a ] keep [ next-byte ] keep [ sub-byte ] keep set-cpu-a ] }
|
|
{ "CPL" [ (emulate-CPL) ] }
|
|
{ "DAA" [ (emulate-DAA) ] }
|
|
{ "RLA" [ (emulate-RLA) ] }
|
|
{ "RRA" [ (emulate-RRA) ] }
|
|
{ "CCF" [ carry-flag swap cpu-f-bitxor= ] }
|
|
{ "SCF" [ carry-flag swap cpu-f-bitor= ] }
|
|
{ "RLCA" [ (emulate-RLCA) ] }
|
|
{ "RRCA" [ (emulate-RRCA) ] }
|
|
{ "HALT" [ drop ] }
|
|
{ "DI" [ [ 255 interrupt-flag - ] swap cpu-f-bitand ] }
|
|
{ "EI" [ [ interrupt-flag ] swap cpu-f-bitor ] }
|
|
{ "POP-RR" [ [ pop-sp ] keep $2 ] }
|
|
{ "PUSH-RR" [ [ $1 ] keep push-sp ] }
|
|
{ "INC-R" [ [ $1 ] keep [ inc-byte ] keep $2 ] }
|
|
{ "DEC-R" [ [ $1 ] keep [ dec-byte ] keep $2 ] }
|
|
{ "INC-RR" [ [ $1 ] keep [ inc-word ] keep $2 ] }
|
|
{ "DEC-RR" [ [ $1 ] keep [ dec-word ] keep $2 ] }
|
|
{ "DEC-(RR)" [ [ $1 ] keep [ read-byte ] keep [ dec-byte ] keep [ $1 ] keep write-byte ] }
|
|
{ "INC-(RR)" [ [ $1 ] keep [ read-byte ] keep [ inc-byte ] keep [ $1 ] keep write-byte ] }
|
|
{ "JP-NN" [ [ cpu-pc ] keep [ read-word ] keep set-cpu-pc ] }
|
|
{ "JP-F|FF,NN" [ [ $1 ] keep swap [ [ next-word ] keep [ set-cpu-pc ] keep [ cpu-cycles ] keep swap 5 + swap set-cpu-cycles ] [ [ cpu-pc 2 + ] keep set-cpu-pc ] if ] }
|
|
{ "JP-(RR)" [ [ $1 ] keep set-cpu-pc ] }
|
|
{ "CALL-NN" [ (emulate-CALL) ] }
|
|
{ "CALL-F|FF,NN" [ [ $1 ] keep swap [ 7 over inc-cycles (emulate-CALL) ] [ [ cpu-pc 2 + ] keep set-cpu-pc ] if ] }
|
|
{ "LD-RR,NN" [ [ next-word ] keep $2 ] }
|
|
{ "LD-RR,RR" [ [ $3 ] keep $2 ] }
|
|
{ "LD-R,N" [ [ next-byte ] keep $2 ] }
|
|
{ "LD-(RR),N" [ [ next-byte ] keep [ $1 ] keep write-byte ] }
|
|
{ "LD-(RR),R" [ [ $3 ] keep [ $1 ] keep write-byte ] }
|
|
{ "LD-R,R" [ [ $3 ] keep $2 ] }
|
|
{ "LD-R,(RR)" [ [ $3 ] keep [ read-byte ] keep $2 ] }
|
|
{ "LD-(NN),RR" [ [ $1 ] keep [ next-word ] keep write-word ] }
|
|
{ "LD-(NN),R" [ [ $1 ] keep [ next-word ] keep write-byte ] }
|
|
{ "LD-RR,(NN)" [ [ next-word ] keep [ read-word ] keep $2 ] }
|
|
{ "LD-R,(NN)" [ [ next-word ] keep [ read-byte ] keep $2 ] }
|
|
{ "OUT-(N),R" [ [ $1 ] keep [ next-byte ] keep write-port ] }
|
|
{ "IN-R,(N)" [ [ next-byte ] keep [ read-port ] keep set-cpu-a ] }
|
|
{ "EX-(RR),RR" [ [ $1 ] keep [ read-word ] keep [ $3 ] keep [ $1 ] keep [ write-word ] keep $4 ] }
|
|
{ "EX-RR,RR" [ [ $1 ] keep [ $3 ] keep [ $2 ] keep $4 ] }
|
|
} ;
|
|
|
|
: 8-bit-registers ( -- parser )
|
|
#! A parser for 8-bit registers. On a successfull parse the
|
|
#! parse tree contains a vector. The first item in the vector
|
|
#! is the getter word for that register with stack effect
|
|
#! ( cpu -- value ). The second item is the setter word with
|
|
#! stack effect ( value cpu -- ).
|
|
<EBNF
|
|
main=("A" | "B" | "C" | "D" | "E" | "H" | "L") => [[ register-lookup ]]
|
|
EBNF> ;
|
|
|
|
: all-flags ( -- parser )
|
|
#! A parser for 16-bit flags.
|
|
<EBNF
|
|
main=("NZ" | "NC" | "PO" | "PE" | "Z" | "C" | "P" | "M") => [[ flag-lookup ]]
|
|
EBNF> ;
|
|
|
|
: 16-bit-registers ( -- parser )
|
|
#! A parser for 16-bit registers. On a successfull parse the
|
|
#! parse tree contains a vector. The first item in the vector
|
|
#! is the getter word for that register with stack effect
|
|
#! ( cpu -- value ). The second item is the setter word with
|
|
#! stack effect ( value cpu -- ).
|
|
<EBNF
|
|
main=("AF" | "BC" | "DE" | "HL" | "SP") => [[ register-lookup ]]
|
|
EBNF> ;
|
|
|
|
: all-registers ( -- parser )
|
|
#! Return a parser that can parse the format
|
|
#! for 8 bit or 16 bit registers.
|
|
[ 16-bit-registers , 8-bit-registers , ] choice* ;
|
|
|
|
: indirect ( parser -- parser )
|
|
#! Given a parser, return a parser which parses the original
|
|
#! wrapped in brackets, representing an indirect reference.
|
|
#! eg. BC -> (BC). The value of the original parser is left in
|
|
#! the parse tree.
|
|
"(" ")" surrounded-by ;
|
|
|
|
: generate-instruction ( vector string -- quot )
|
|
#! Generate the quotation for an instruction, given the instruction in
|
|
#! the 'string' and a vector containing the arguments for that instruction.
|
|
patterns at replace-patterns ;
|
|
|
|
: simple-instruction ( token -- parser )
|
|
#! Return a parser for then instruction identified by the token.
|
|
#! The parser return parses the token only and expects no additional
|
|
#! arguments to the instruction.
|
|
token [ '[ { } , generate-instruction ] ] action ;
|
|
|
|
: complex-instruction ( type token -- parser )
|
|
#! Return a parser for an instruction identified by the token.
|
|
#! The instruction is expected to take additional arguments by
|
|
#! being combined with other parsers. Then 'type' is used for a lookup
|
|
#! in a pattern hashtable to return the instruction quotation pattern.
|
|
token swap [ nip '[ , generate-instruction ] ] curry action ;
|
|
|
|
: no-params ( ast -- ast )
|
|
first { } swap curry ;
|
|
|
|
: one-param ( ast -- ast )
|
|
first2 swap curry ;
|
|
|
|
: two-params ( ast -- ast )
|
|
first3 append swap curry ;
|
|
|
|
: NOP-instruction ( -- parser )
|
|
"NOP" simple-instruction ;
|
|
|
|
: RET-NN-instruction ( -- parser )
|
|
[
|
|
"RET-NN" "RET" complex-instruction ,
|
|
"nn" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: RST-0-instruction ( -- parser )
|
|
[
|
|
"RST-0" "RST" complex-instruction ,
|
|
"0" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: RST-8-instruction ( -- parser )
|
|
[
|
|
"RST-8" "RST" complex-instruction ,
|
|
"8" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: RST-10H-instruction ( -- parser )
|
|
[
|
|
"RST-10H" "RST" complex-instruction ,
|
|
"10H" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: RST-18H-instruction ( -- parser )
|
|
[
|
|
"RST-18H" "RST" complex-instruction ,
|
|
"18H" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: RST-20H-instruction ( -- parser )
|
|
[
|
|
"RST-20H" "RST" complex-instruction ,
|
|
"20H" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: RST-28H-instruction ( -- parser )
|
|
[
|
|
"RST-28H" "RST" complex-instruction ,
|
|
"28H" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: RST-30H-instruction ( -- parser )
|
|
[
|
|
"RST-30H" "RST" complex-instruction ,
|
|
"30H" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: RST-38H-instruction ( -- parser )
|
|
[
|
|
"RST-38H" "RST" complex-instruction ,
|
|
"38H" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: JP-NN-instruction ( -- parser )
|
|
[
|
|
"JP-NN" "JP" complex-instruction ,
|
|
"nn" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: JP-F|FF,NN-instruction ( -- parser )
|
|
[
|
|
"JP-F|FF,NN" "JP" complex-instruction ,
|
|
all-flags sp ,
|
|
",nn" token hide ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: JP-(RR)-instruction ( -- parser )
|
|
[
|
|
"JP-(RR)" "JP" complex-instruction ,
|
|
16-bit-registers indirect sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: CALL-NN-instruction ( -- parser )
|
|
[
|
|
"CALL-NN" "CALL" complex-instruction ,
|
|
"nn" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: CALL-F|FF,NN-instruction ( -- parser )
|
|
[
|
|
"CALL-F|FF,NN" "CALL" complex-instruction ,
|
|
all-flags sp ,
|
|
",nn" token hide ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: RLCA-instruction ( -- parser )
|
|
"RLCA" simple-instruction ;
|
|
|
|
: RRCA-instruction ( -- parser )
|
|
"RRCA" simple-instruction ;
|
|
|
|
: HALT-instruction ( -- parser )
|
|
"HALT" simple-instruction ;
|
|
|
|
: DI-instruction ( -- parser )
|
|
"DI" simple-instruction ;
|
|
|
|
: EI-instruction ( -- parser )
|
|
"EI" simple-instruction ;
|
|
|
|
: CPL-instruction ( -- parser )
|
|
"CPL" simple-instruction ;
|
|
|
|
: CCF-instruction ( -- parser )
|
|
"CCF" simple-instruction ;
|
|
|
|
: SCF-instruction ( -- parser )
|
|
"SCF" simple-instruction ;
|
|
|
|
: DAA-instruction ( -- parser )
|
|
"DAA" simple-instruction ;
|
|
|
|
: RLA-instruction ( -- parser )
|
|
"RLA" simple-instruction ;
|
|
|
|
: RRA-instruction ( -- parser )
|
|
"RRA" simple-instruction ;
|
|
|
|
: DEC-R-instruction ( -- parser )
|
|
[
|
|
"DEC-R" "DEC" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: DEC-RR-instruction ( -- parser )
|
|
[
|
|
"DEC-RR" "DEC" complex-instruction ,
|
|
16-bit-registers sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: DEC-(RR)-instruction ( -- parser )
|
|
[
|
|
"DEC-(RR)" "DEC" complex-instruction ,
|
|
16-bit-registers indirect sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: POP-RR-instruction ( -- parser )
|
|
[
|
|
"POP-RR" "POP" complex-instruction ,
|
|
all-registers sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: PUSH-RR-instruction ( -- parser )
|
|
[
|
|
"PUSH-RR" "PUSH" complex-instruction ,
|
|
all-registers sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: INC-R-instruction ( -- parser )
|
|
[
|
|
"INC-R" "INC" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: INC-RR-instruction ( -- parser )
|
|
[
|
|
"INC-RR" "INC" complex-instruction ,
|
|
16-bit-registers sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: INC-(RR)-instruction ( -- parser )
|
|
[
|
|
"INC-(RR)" "INC" complex-instruction ,
|
|
all-registers indirect sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: RET-F|FF-instruction ( -- parser )
|
|
[
|
|
"RET-F|FF" "RET" complex-instruction ,
|
|
all-flags sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: AND-N-instruction ( -- parser )
|
|
[
|
|
"AND-N" "AND" complex-instruction ,
|
|
"n" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: AND-R-instruction ( -- parser )
|
|
[
|
|
"AND-R" "AND" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: AND-(RR)-instruction ( -- parser )
|
|
[
|
|
"AND-(RR)" "AND" complex-instruction ,
|
|
16-bit-registers indirect sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: XOR-N-instruction ( -- parser )
|
|
[
|
|
"XOR-N" "XOR" complex-instruction ,
|
|
"n" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: XOR-R-instruction ( -- parser )
|
|
[
|
|
"XOR-R" "XOR" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: XOR-(RR)-instruction ( -- parser )
|
|
[
|
|
"XOR-(RR)" "XOR" complex-instruction ,
|
|
16-bit-registers indirect sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: OR-N-instruction ( -- parser )
|
|
[
|
|
"OR-N" "OR" complex-instruction ,
|
|
"n" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: OR-R-instruction ( -- parser )
|
|
[
|
|
"OR-R" "OR" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: OR-(RR)-instruction ( -- parser )
|
|
[
|
|
"OR-(RR)" "OR" complex-instruction ,
|
|
16-bit-registers indirect sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: CP-N-instruction ( -- parser )
|
|
[
|
|
"CP-N" "CP" complex-instruction ,
|
|
"n" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: CP-R-instruction ( -- parser )
|
|
[
|
|
"CP-R" "CP" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: CP-(RR)-instruction ( -- parser )
|
|
[
|
|
"CP-(RR)" "CP" complex-instruction ,
|
|
16-bit-registers indirect sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: ADC-R,N-instruction ( -- parser )
|
|
[
|
|
"ADC-R,N" "ADC" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
",n" token hide ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: ADC-R,R-instruction ( -- parser )
|
|
[
|
|
"ADC-R,R" "ADC" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
"," token hide ,
|
|
8-bit-registers ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: ADC-R,(RR)-instruction ( -- parser )
|
|
[
|
|
"ADC-R,(RR)" "ADC" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
"," token hide ,
|
|
16-bit-registers indirect ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: SBC-R,N-instruction ( -- parser )
|
|
[
|
|
"SBC-R,N" "SBC" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
",n" token hide ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: SBC-R,R-instruction ( -- parser )
|
|
[
|
|
"SBC-R,R" "SBC" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
"," token hide ,
|
|
8-bit-registers ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: SBC-R,(RR)-instruction ( -- parser )
|
|
[
|
|
"SBC-R,(RR)" "SBC" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
"," token hide ,
|
|
16-bit-registers indirect ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: SUB-R-instruction ( -- parser )
|
|
[
|
|
"SUB-R" "SUB" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: SUB-(RR)-instruction ( -- parser )
|
|
[
|
|
"SUB-(RR)" "SUB" complex-instruction ,
|
|
16-bit-registers indirect sp ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: SUB-N-instruction ( -- parser )
|
|
[
|
|
"SUB-N" "SUB" complex-instruction ,
|
|
"n" token sp hide ,
|
|
] seq* [ no-params ] action ;
|
|
|
|
: ADD-R,N-instruction ( -- parser )
|
|
[
|
|
"ADD-R,N" "ADD" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
",n" token hide ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: ADD-R,R-instruction ( -- parser )
|
|
[
|
|
"ADD-R,R" "ADD" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
"," token hide ,
|
|
8-bit-registers ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: ADD-RR,RR-instruction ( -- parser )
|
|
[
|
|
"ADD-RR,RR" "ADD" complex-instruction ,
|
|
16-bit-registers sp ,
|
|
"," token hide ,
|
|
16-bit-registers ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: ADD-R,(RR)-instruction ( -- parser )
|
|
[
|
|
"ADD-R,(RR)" "ADD" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
"," token hide ,
|
|
16-bit-registers indirect ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: LD-RR,NN-instruction ( -- parser )
|
|
#! LD BC,nn
|
|
[
|
|
"LD-RR,NN" "LD" complex-instruction ,
|
|
16-bit-registers sp ,
|
|
",nn" token hide ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: LD-R,N-instruction ( -- parser )
|
|
#! LD B,n
|
|
[
|
|
"LD-R,N" "LD" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
",n" token hide ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: LD-(RR),N-instruction ( -- parser )
|
|
[
|
|
"LD-(RR),N" "LD" complex-instruction ,
|
|
16-bit-registers indirect sp ,
|
|
",n" token hide ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: LD-(RR),R-instruction ( -- parser )
|
|
#! LD (BC),A
|
|
[
|
|
"LD-(RR),R" "LD" complex-instruction ,
|
|
16-bit-registers indirect sp ,
|
|
"," token hide ,
|
|
8-bit-registers ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: LD-R,R-instruction ( -- parser )
|
|
[
|
|
"LD-R,R" "LD" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
"," token hide ,
|
|
8-bit-registers ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: LD-RR,RR-instruction ( -- parser )
|
|
[
|
|
"LD-RR,RR" "LD" complex-instruction ,
|
|
16-bit-registers sp ,
|
|
"," token hide ,
|
|
16-bit-registers ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: LD-R,(RR)-instruction ( -- parser )
|
|
[
|
|
"LD-R,(RR)" "LD" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
"," token hide ,
|
|
16-bit-registers indirect ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: LD-(NN),RR-instruction ( -- parser )
|
|
[
|
|
"LD-(NN),RR" "LD" complex-instruction ,
|
|
"nn" token indirect sp hide ,
|
|
"," token hide ,
|
|
16-bit-registers ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: LD-(NN),R-instruction ( -- parser )
|
|
[
|
|
"LD-(NN),R" "LD" complex-instruction ,
|
|
"nn" token indirect sp hide ,
|
|
"," token hide ,
|
|
8-bit-registers ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: LD-RR,(NN)-instruction ( -- parser )
|
|
[
|
|
"LD-RR,(NN)" "LD" complex-instruction ,
|
|
16-bit-registers sp ,
|
|
"," token hide ,
|
|
"nn" token indirect hide ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: LD-R,(NN)-instruction ( -- parser )
|
|
[
|
|
"LD-R,(NN)" "LD" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
"," token hide ,
|
|
"nn" token indirect hide ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: OUT-(N),R-instruction ( -- parser )
|
|
[
|
|
"OUT-(N),R" "OUT" complex-instruction ,
|
|
"n" token indirect sp hide ,
|
|
"," token hide ,
|
|
8-bit-registers ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: IN-R,(N)-instruction ( -- parser )
|
|
[
|
|
"IN-R,(N)" "IN" complex-instruction ,
|
|
8-bit-registers sp ,
|
|
"," token hide ,
|
|
"n" token indirect hide ,
|
|
] seq* [ one-param ] action ;
|
|
|
|
: EX-(RR),RR-instruction ( -- parser )
|
|
[
|
|
"EX-(RR),RR" "EX" complex-instruction ,
|
|
16-bit-registers indirect sp ,
|
|
"," token hide ,
|
|
16-bit-registers ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: EX-RR,RR-instruction ( -- parser )
|
|
[
|
|
"EX-RR,RR" "EX" complex-instruction ,
|
|
16-bit-registers sp ,
|
|
"," token hide ,
|
|
16-bit-registers ,
|
|
] seq* [ two-params ] action ;
|
|
|
|
: 8080-generator-parser ( -- parser )
|
|
[
|
|
NOP-instruction ,
|
|
RST-0-instruction ,
|
|
RST-8-instruction ,
|
|
RST-10H-instruction ,
|
|
RST-18H-instruction ,
|
|
RST-20H-instruction ,
|
|
RST-28H-instruction ,
|
|
RST-30H-instruction ,
|
|
RST-38H-instruction ,
|
|
JP-F|FF,NN-instruction ,
|
|
JP-NN-instruction ,
|
|
JP-(RR)-instruction ,
|
|
CALL-F|FF,NN-instruction ,
|
|
CALL-NN-instruction ,
|
|
CPL-instruction ,
|
|
CCF-instruction ,
|
|
SCF-instruction ,
|
|
DAA-instruction ,
|
|
RLA-instruction ,
|
|
RRA-instruction ,
|
|
RLCA-instruction ,
|
|
RRCA-instruction ,
|
|
HALT-instruction ,
|
|
DI-instruction ,
|
|
EI-instruction ,
|
|
AND-N-instruction ,
|
|
AND-R-instruction ,
|
|
AND-(RR)-instruction ,
|
|
XOR-N-instruction ,
|
|
XOR-R-instruction ,
|
|
XOR-(RR)-instruction ,
|
|
OR-N-instruction ,
|
|
OR-R-instruction ,
|
|
OR-(RR)-instruction ,
|
|
CP-N-instruction ,
|
|
CP-R-instruction ,
|
|
CP-(RR)-instruction ,
|
|
DEC-RR-instruction ,
|
|
DEC-R-instruction ,
|
|
DEC-(RR)-instruction ,
|
|
POP-RR-instruction ,
|
|
PUSH-RR-instruction ,
|
|
INC-RR-instruction ,
|
|
INC-R-instruction ,
|
|
INC-(RR)-instruction ,
|
|
LD-RR,NN-instruction ,
|
|
LD-RR,RR-instruction ,
|
|
LD-R,N-instruction ,
|
|
LD-R,R-instruction ,
|
|
LD-(RR),N-instruction ,
|
|
LD-(RR),R-instruction ,
|
|
LD-R,(RR)-instruction ,
|
|
LD-(NN),RR-instruction ,
|
|
LD-(NN),R-instruction ,
|
|
LD-RR,(NN)-instruction ,
|
|
LD-R,(NN)-instruction ,
|
|
ADC-R,(RR)-instruction ,
|
|
ADC-R,N-instruction ,
|
|
ADC-R,R-instruction ,
|
|
ADD-R,N-instruction ,
|
|
ADD-R,(RR)-instruction ,
|
|
ADD-R,R-instruction ,
|
|
ADD-RR,RR-instruction ,
|
|
SBC-R,N-instruction ,
|
|
SBC-R,R-instruction ,
|
|
SBC-R,(RR)-instruction ,
|
|
SUB-R-instruction ,
|
|
SUB-(RR)-instruction ,
|
|
SUB-N-instruction ,
|
|
RET-F|FF-instruction ,
|
|
RET-NN-instruction ,
|
|
OUT-(N),R-instruction ,
|
|
IN-R,(N)-instruction ,
|
|
EX-(RR),RR-instruction ,
|
|
EX-RR,RR-instruction ,
|
|
] choice* [ call ] action ;
|
|
|
|
: instruction-quotations ( string -- emulate-quot )
|
|
#! Given an instruction string, return the emulation quotation for
|
|
#! it. This will later be expanded to produce the disassembly and
|
|
#! assembly quotations.
|
|
8080-generator-parser parse ;
|
|
|
|
SYMBOL: last-instruction
|
|
SYMBOL: last-opcode
|
|
|
|
: parse-instructions ( list -- emulate-quot )
|
|
#! Process the list of strings, which should make
|
|
#! up an 8080 instruction, and output a quotation
|
|
#! that would implement that instruction.
|
|
dup " " join instruction-quotations
|
|
>r "_" join [ "emulate-" % % ] "" make create-in dup last-instruction global set-at
|
|
r> (( cpu -- )) define-declared ;
|
|
|
|
: INSTRUCTION: ";" parse-tokens parse-instructions ; parsing
|
|
|
|
: cycles ( -- )
|
|
#! Set the number of cycles for the last instruction that was defined.
|
|
scan string>number last-opcode global at instruction-cycles set-nth ; parsing
|
|
|
|
: opcode ( -- )
|
|
#! Set the opcode number for the last instruction that was defined.
|
|
last-instruction global at 1quotation scan 16 base>
|
|
dup last-opcode global set-at set-instruction ; parsing
|
|
|