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Add the NOP Zero Page undocumented opcode.

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This seems to be one of the preferred undocced ops in the Atari
2600 VCS development community.
This commit is contained in:
Michael C. Martin 2012-05-29 18:18:33 -07:00
parent 196cb47f05
commit af50326e39
5 changed files with 372 additions and 363 deletions
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5
src/Ophis/Opcodes.py
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@ -7,6 +7,10 @@
# You may use, modify, and distribute this file under the MIT
# license: See README for details.
# DO NOT EDIT THIS FILE DIRECTLY.
# This file was automatically generated by gensets.py based on the
# the tables in tools/opcodes. Edit those tables, not these.
# Names of addressing modes
modes = ["Implied", # 0
"Immediate", # 1
@ -96,6 +100,7 @@ undocops = {
'las': [None, None, None, None, None, None, None, 0xBB, None, None, None, None, None, None, None],
'lax': [None, None, 0xA7, None, 0xB7, 0xAF, None, 0xBF, None, None, None, None, 0xA3, 0xB3, None],
'lxa': [None, 0xAB, None, None, None, None, None, None, None, None, None, None, None, None, None],
'nop': [0xEA, None, 0x04, None, None, None, None, None, None, None, None, None, None, None, None],
'rla': [None, None, 0x27, 0x37, None, 0x2F, 0x3F, 0x3B, None, None, None, None, 0x23, 0x33, None],
'rra': [None, None, 0x67, 0x77, None, 0x6F, 0x7F, 0x7B, None, None, None, None, 0x63, 0x73, None],
'sax': [None, None, 0x87, None, 0x97, 0x8F, None, None, None, None, None, None, 0x83, None, None],

BIN
tests/test6510.bin
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1
tests/test6510.oph
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@ -13,6 +13,7 @@
; opcodes - see testbase.oph for those.
SLO ($03, X)
NOP $04
SLO $07
ANC #$0B
SLO $0F0F

11
tools/opcodes/gensets.py
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@ -8,9 +8,13 @@ prologue = '"""' + """Opcodes file.
Tables for the assembly of 6502-family instructions, mapping
opcodes and addressing modes to binary instructions.""" + '"""' + """
# Copyright 2002 Michael C. Martin.
# You may use, modify, and distribute this file under the BSD
# license: See LICENSE.txt for details.
# Copyright 2002-2012 Michael C. Martin and additional contributors.
# You may use, modify, and distribute this file under the MIT
# license: See README for details.
# DO NOT EDIT THIS FILE DIRECTLY.
# This file was automatically generated by gensets.py based on the
# the tables in tools/opcodes. Edit those tables, not these.
# Names of addressing modes
modes = ["Implied", # 0
@ -150,4 +154,3 @@ if __name__=='__main__':
dump_map (instruction_map, ' ' * (len(field) + 4))
print "%s}" % (' ' * (len(field) + 3))
print ""

2
tools/opcodes/op6510.txt
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@ -2,7 +2,7 @@
01: ORA - (Zero Page, X)
02:
03: SLO - (Zero Page, X)
04:
04: NOP - Zero Page
05: ORA - Zero Page
06: ASL - Zero Page
07: SLO - Zero Page