6502
/
udis
mirror of https://github.com/jefftranter/udis.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Added 6801 / 6803 support

This commit is contained in:
Merlin Skinner-Oakes 2023-06-13 22:47:53 +01:00 committed by GitHub
parent 6fdb3ba0ee
commit 8fdd0eeaf1
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 278 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

278
6801.py Normal file
View File

@ -0,0 +1,278 @@
##########################################################################
#
# Processor specific code
# 13/6/2023: 6801 / 6803 support added by Merlin Skinner-Oakes for Jeff
# Tranter's Universal Disassembler (udis)
# CPU = "6801"
# Description = "Motorola 6801/6803 8-bit microprocessor."
# DataWidth = 8 # 8-bit data
# AddressWidth = 16 # 16-bit addresses
# Maximum length of an instruction (for formatting purposes)
maxLength = 3
# Leadin bytes for multibyte instructions
leadInBytes = []
# Addressing mode table
# List of addressing modes and corresponding format strings for operands.
addressModeTable = {
"implied" : "",
"immediate" : "#${0:02X}",
"immediatex" : "#${0:02X}{1:02X}",
"direct" : "${0:02X}",
"indexed" : "${0:02X},x",
"extended" : "${0:02X}{1:02X}",
"relative" : "${0:04X}",
}
# Op Code Table
# Key is numeric opcode (possibly multiple bytes)
# Value is a list:
# # bytes
# mnemonic
# addressing mode
# flags (e.g. pcr)
opcodeTable = {
0x01 : [ 1, "nop", "implied" ],
0x04 : [ 1, "lsld", "implied" ], # 6801 / 6803 only
0x05 : [ 1, "asld", "implied" ], # 6801 / 6803 only
0x06 : [ 1, "tap", "implied" ],
0x07 : [ 1, "tpa", "implied" ],
0x08 : [ 1, "inx", "implied" ],
0x09 : [ 1, "dex", "implied" ],
0x0a : [ 1, "clv", "implied" ],
0x0b : [ 1, "sev", "implied" ],
0x0c : [ 1, "clc", "implied" ],
0x0d : [ 1, "sec", "implied" ],
0x0e : [ 1, "cli", "implied" ],
0x0f : [ 1, "sei", "implied" ],
0x10 : [ 1, "sba", "implied" ],
0x11 : [ 1, "cba", "implied" ],
0x16 : [ 1, "tab", "implied" ],
0x17 : [ 1, "tba", "implied" ],
0x19 : [ 1, "daa", "implied" ],
0x1b : [ 1, "aba", "implied" ],
0x20 : [ 2, "bra", "relative", pcr ],
0x21 : [ 2, "brn", "relative", pcr ], # 6801 / 6803 only
0x22 : [ 2, "bhi", "relative", pcr ],
0x23 : [ 2, "bls", "relative", pcr ],
0x24 : [ 2, "bcc", "relative", pcr ],
0x25 : [ 2, "bcs", "relative", pcr ],
0x26 : [ 2, "bne", "relative", pcr ],
0x27 : [ 2, "beq", "relative", pcr ],
0x28 : [ 2, "bvc", "relative", pcr ],
0x29 : [ 2, "bvs", "relative", pcr ],
0x2a : [ 2, "bpl", "relative", pcr ],
0x2b : [ 2, "bmi", "relative", pcr ],
0x2c : [ 2, "bge", "relative", pcr ],
0x2d : [ 2, "blt", "relative", pcr ],
0x2e : [ 2, "bgt", "relative", pcr ],
0x2f : [ 2, "ble", "relative", pcr ],
0x30 : [ 1, "tsx", "implied" ],
0x31 : [ 1, "ins", "implied" ],
0x32 : [ 1, "pula", "implied" ],
0x33 : [ 1, "pulb", "implied" ],
0x34 : [ 1, "des", "implied" ],
0x35 : [ 1, "txs", "implied" ],
0x36 : [ 1, "psha", "implied" ],
0x37 : [ 1, "pshb", "implied" ],
0x38 : [ 1, "pulx", "implied" ], # 6801 / 6803 only
0x39 : [ 1, "rts", "implied" ],
0x3a : [ 1, "abx", "implied" ], # 6801 / 6803 only
0x3b : [ 1, "rti", "implied" ],
0x3c : [ 1, "pshx", "implied" ], # 6801 / 6803 only
0x3d : [ 1, "mul", "implied" ], # 6801 / 6803 only
0x3e : [ 1, "wai", "implied" ],
0x3f : [ 1, "swi", "implied" ],
0x40 : [ 1, "nega", "implied" ],
0x43 : [ 1, "coma", "implied" ],
0x44 : [ 1, "lsra", "implied" ],
0x46 : [ 1, "rora", "implied" ],
0x47 : [ 1, "asra", "implied" ],
0x48 : [ 1, "asla", "implied" ],
0x49 : [ 1, "rola", "implied" ],
0x4a : [ 1, "deca", "implied" ],
0x4c : [ 1, "inca", "implied" ],
0x4d : [ 1, "tsta", "implied" ],
0x4f : [ 1, "clra", "implied" ],
0x50 : [ 1, "negb", "implied" ],
0x53 : [ 1, "comb", "implied" ],
0x54 : [ 1, "lsrb", "implied" ],
0x56 : [ 1, "rorb", "implied" ],
0x57 : [ 1, "asrb", "implied" ],
0x58 : [ 1, "aslb", "implied" ],
0x59 : [ 1, "rolb", "implied" ],
0x5a : [ 1, "decb", "implied" ],
0x5c : [ 1, "incb", "implied" ],
0x5d : [ 1, "tstb", "implied" ],
0x5f : [ 1, "clrb", "implied" ],
0x60 : [ 2, "neg", "indexed" ],
0x63 : [ 2, "com", "indexed" ],
0x64 : [ 2, "lsr", "indexed" ],
0x66 : [ 2, "ror", "indexed" ],
0x67 : [ 2, "asr", "indexed" ],
0x68 : [ 2, "asl", "indexed" ],
0x69 : [ 2, "rol", "indexed" ],
0x6a : [ 2, "dec", "indexed" ],
0x6c : [ 2, "inc", "indexed" ],
0x6d : [ 2, "tst", "indexed" ],
0x6e : [ 2, "jmp", "indexed" ],
0x6f : [ 2, "clr", "indexed" ],
0x70 : [ 3, "neg", "extended" ],
0x73 : [ 3, "com", "extended" ],
0x74 : [ 3, "lsr", "extended" ],
0x76 : [ 3, "ror", "extended" ],
0x77 : [ 3, "asr", "extended" ],
0x78 : [ 3, "asl", "extended" ],
0x79 : [ 3, "rol", "extended" ],
0x7a : [ 3, "dec", "extended" ],
0x7c : [ 3, "inc", "extended" ],
0x7d : [ 3, "tst", "extended" ],
0x7e : [ 3, "jmp", "extended" ],
0x7f : [ 3, "clr", "extended" ],
0x80 : [ 2, "suba", "immediate" ],
0x81 : [ 2, "cmpa", "immediate" ],
0x82 : [ 2, "sbca", "immediate" ],
0x83 : [ 3, "subd", "immediatex" ], # 6801 / 6803 only
0x84 : [ 2, "anda", "immediate" ],
0x85 : [ 2, "bita", "immediate" ],
0x86 : [ 2, "ldaa", "immediate" ],
0x88 : [ 2, "eora", "immediate" ],
0x89 : [ 2, "adca", "immediate" ],
0x8a : [ 2, "oraa", "immediate" ],
0x8b : [ 2, "adda", "immediate" ],
0x8c : [ 3, "cpx", "immediatex" ],
0x8d : [ 2, "bsr", "relative", pcr ],
0x8e : [ 3, "lds", "immediatex" ],
0x90 : [ 2, "suba", "direct" ],
0x91 : [ 2, "cmpa", "direct" ],
0x92 : [ 2, "sbca", "direct" ],
0x93 : [ 2, "subd", "direct" ], # 6801 / 6803 only
0x94 : [ 2, "anda", "direct" ],
0x95 : [ 2, "bita", "direct" ],
0x96 : [ 2, "ldaa", "direct" ],
0x97 : [ 2, "staa", "direct" ],
0x98 : [ 2, "eora", "direct" ],
0x99 : [ 2, "adca", "direct" ],
0x9a : [ 2, "oraa", "direct" ],
0x9b : [ 2, "adda", "direct" ],
0x9c : [ 2, "cpx", "direct" ],
0x9d : [ 2, "jsr", "direct" ], # 6801 / 6803 only
0x9e : [ 2, "lds", "direct" ],
0x9f : [ 2, "sts", "direct" ],
0xa0 : [ 2, "suba", "indexed" ],
0xa1 : [ 2, "cmpa", "indexed" ],
0xa2 : [ 2, "sbca", "indexed" ],
0xa3 : [ 2, "subd", "indexed" ], # 6801 / 6803 only
0xa4 : [ 2, "anda", "indexed" ],
0xa5 : [ 2, "bita", "indexed" ],
0xa6 : [ 2, "ldaa", "indexed" ],
0xa7 : [ 2, "staa", "indexed" ],
0xa8 : [ 2, "eora", "indexed" ],
0xa9 : [ 2, "adca", "indexed" ],
0xaa : [ 2, "oraa", "indexed" ],
0xab : [ 2, "adda", "indexed" ],
0xac : [ 2, "cpx", "indexed" ],
0xad : [ 2, "jsr", "indexed" ],
0xae : [ 2, "lds", "indexed" ],
0xaf : [ 2, "sts", "indexed" ],
0xb0 : [ 3, "suba", "extended" ],
0xb1 : [ 3, "cmpa", "extended" ],
0xb2 : [ 3, "sbca", "extended" ],
0xb3 : [ 3, "subd", "extended" ], # 6801 / 6803 only
0xb4 : [ 3, "anda", "extended" ],
0xb5 : [ 3, "bita", "extended" ],
0xb6 : [ 3, "ldaa", "extended" ],
0xb7 : [ 3, "staa", "extended" ],
0xb8 : [ 3, "eora", "extended" ],
0xb9 : [ 3, "adca", "extended" ],
0xba : [ 3, "oraa", "extended" ],
0xbb : [ 3, "adda", "extended" ],
0xbc : [ 3, "cpx", "extended" ],
0xbd : [ 3, "jsr", "extended" ],
0xbe : [ 3, "lds", "extended" ],
0xbf : [ 3, "sts", "extended" ],
0xc0 : [ 2, "subb", "immediate" ],
0xc1 : [ 2, "cmpb", "immediate" ],
0xc2 : [ 2, "sbcb", "immediate" ],
0xc3 : [ 3, "addd", "immediatex" ], # 6801 / 6803 only
0xc4 : [ 2, "andb", "immediate" ],
0xc5 : [ 2, "bitb", "immediate" ],
0xc6 : [ 2, "ldab", "immediate" ],
0xc8 : [ 2, "eorb", "immediate" ],
0xc9 : [ 2, "adcb", "immediate" ],
0xca : [ 2, "orab", "immediate" ],
0xcb : [ 2, "addb", "immediate" ],
0xcc : [ 3, "ldd", "immediatex" ], # 6801 / 6803 only
0xce : [ 3, "ldx", "immediatex" ],
0xd0 : [ 2, "subb", "direct" ],
0xd1 : [ 2, "cmpb", "direct" ],
0xd2 : [ 2, "sbcb", "direct" ],
0xd3 : [ 2, "addd", "direct" ], # 6801 / 6803 only
0xd4 : [ 2, "andb", "direct" ],
0xd5 : [ 2, "bitb", "direct" ],
0xd6 : [ 2, "ldab", "direct" ],
0xd7 : [ 2, "stab", "direct" ],
0xd8 : [ 2, "eorb", "direct" ],
0xd9 : [ 2, "adcb", "direct" ],
0xda : [ 2, "orab", "direct" ],
0xdb : [ 2, "addb", "direct" ],
0xdc : [ 2, "ldd", "direct" ], # 6801 / 6803 only
0xdd : [ 2, "std", "direct" ], # 6801 / 6803 only
0xde : [ 2, "ldx", "direct" ],
0xdf : [ 2, "stx", "direct" ],
0xe0 : [ 2, "subb", "indexed" ],
0xe1 : [ 2, "cmpb", "indexed" ],
0xe2 : [ 2, "sbcb", "indexed" ],
0xe3 : [ 2, "addd", "indexed" ], # 6801 / 6803 only
0xe4 : [ 2, "andb", "indexed" ],
0xe5 : [ 2, "bitb", "indexed" ],
0xe6 : [ 2, "ldab", "indexed" ],
0xe7 : [ 2, "stab", "indexed" ],
0xe8 : [ 2, "eorb", "indexed" ],
0xe9 : [ 2, "adcb", "indexed" ],
0xea : [ 2, "orab", "indexed" ],
0xeb : [ 2, "addb", "indexed" ],
0xec : [ 2, "ldd", "indexed" ], # 6801 / 6803 only
0xed : [ 2, "std", "indexed" ], # 6801 / 6803 only
0xee : [ 2, "ldx", "indexed" ],
0xef : [ 2, "stx", "indexed" ],
0xf0 : [ 3, "subb", "extended" ],
0xf1 : [ 3, "cmpb", "extended" ],
0xf2 : [ 3, "sbcb", "extended" ],
0xf3 : [ 3, "addd", "extended" ], # 6801 / 6803 only
0xf4 : [ 3, "andb", "extended" ],
0xf5 : [ 3, "bitb", "extended" ],
0xf6 : [ 3, "ldab", "extended" ],
0xf7 : [ 3, "stab", "extended" ],
0xf8 : [ 3, "eorb", "extended" ],
0xf9 : [ 3, "adcb", "extended" ],
0xfa : [ 3, "orab", "extended" ],
0xfb : [ 3, "addb", "extended" ],
0xfc : [ 3, "ldd", "extended" ], # 6801 / 6803 only
0xfd : [ 3, "std", "extended" ], # 6801 / 6803 only
0xfe : [ 3, "ldx", "extended" ],
0xff : [ 3, "stx", "extended" ],
}
# End of processor specific code
##########################################################################