mirror of https://github.com/stella-emu/stella.git
Only mark actual undefined opcodes as defined by DASM as being
undefined. The rest are defined but illegal, which is different (mostly because many ROMs released in the past 10 years make extensive use of illegal opcodes). git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@2667 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
This commit is contained in:
stephena
parent
1ade2900e4
commit
1173b88c79
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@ -18,9 +18,9 @@
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- The debugger now generates DASM-compatible disassembled code,
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which can be saved to an external file. This disassembly is
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based on both a static and runtime analysis, and is extremely
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accurate. It also automatically differentiates between the
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directives CODE/PGFX/GFX/DATA/ROW, whereas normal Distella
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only differentiates between CODE and ROW. For now, only
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accurate. It also automatically differentiates between
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CODE/PGFX/GFX/DATA/ROW areas, whereas normal Distella
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only differentiates between CODE/GFX/ROW. For now, only
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single-bank (4K) ROMs are supported.
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- The disassembly now recognizes various TIA read/write mirrors,
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@ -34,7 +34,7 @@
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ROM multiple times from the ROM launcher.
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* Updated profile database for "BasketBall" ROMs; the joysticks are now
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swapped by dedault, which allows one and two-player games to work
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swapped by default, which allows one and two-player games to work
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correctly.
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-Have fun!
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@ -356,9 +356,9 @@ void DiStella::disasm(uInt32 distart, int pass)
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addr_mode = ourLookup[op].addr_mode;
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myPC++;
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// Undefined opcodes are in lowercase letters
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// Original Distella has those opcodes starting with a '.'
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if (islower(ourLookup[op].mnemonic[0]))
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// Undefined opcodes start with a '.'
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// These are undefined wrt DASM
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if (ourLookup[op].mnemonic[0] == '.')
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{
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addr_mode = IMPLIED;
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if (pass == 3)
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@ -1075,7 +1075,7 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* 00 */ { "BRK", IMPLIED, M_NONE, NONE, 7 }, /* Pseudo Absolute */
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/* 01 */ { "ORA", INDIRECT_X, M_INDX, READ, 6 }, /* (Indirect,X) */
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/* 02 */ { "jam", IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 02 */ { ".jam",IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 03 */ { "slo", INDIRECT_X, M_INDX, WRITE, 8 },
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/* 04 */ { "nop", ZERO_PAGE, M_NONE, NONE, 3 },
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@ -1095,7 +1095,7 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* 10 */ { "BPL", RELATIVE, M_REL, READ, 2 },
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/* 11 */ { "ORA", INDIRECT_Y, M_INDY, READ, 5 }, /* (Indirect),Y */
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/* 12 */ { "jam", IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 12 */ { ".jam",IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 13 */ { "slo", INDIRECT_Y, M_INDY, WRITE, 8 },
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/* 14 */ { "nop", ZERO_PAGE_X, M_NONE, NONE, 4 },
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@ -1105,7 +1105,7 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* 18 */ { "CLC", IMPLIED, M_NONE, NONE, 2 },
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/* 19 */ { "ORA", ABSOLUTE_Y, M_ABSY, READ, 4 }, /* Absolute,Y */
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/* 1a */ { "nop", IMPLIED, M_NONE, NONE, 2 },
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/* 1a */ { ".nop",IMPLIED, M_NONE, NONE, 2 },
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/* 1b */ { "slo", ABSOLUTE_Y, M_ABSY, WRITE, 7 },
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/* 1c */ { "nop", ABSOLUTE_X, M_NONE, NONE, 4 },
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@ -1115,7 +1115,7 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* 20 */ { "JSR", ABSOLUTE, M_ADDR, READ, 6 },
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/* 21 */ { "AND", INDIRECT_X, M_INDX, READ, 6 }, /* (Indirect ,X) */
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/* 22 */ { "jam", IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 22 */ { ".jam",IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 23 */ { "rla", INDIRECT_X, M_INDX, WRITE, 8 },
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/* 24 */ { "BIT", ZERO_PAGE, M_ZERO, READ, 3 }, /* Zeropage */
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@ -1126,7 +1126,7 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* 28 */ { "PLP", IMPLIED, M_NONE, NONE, 4 },
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/* 29 */ { "AND", IMMEDIATE, M_IMM, READ, 2 }, /* Immediate */
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/* 2a */ { "ROL", ACCUMULATOR, M_AC, WRITE, 2 }, /* Accumulator */
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/* 2b */ { "anc", IMMEDIATE, M_ACIM, READ, 2 },
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/* 2b */ { ".anc",IMMEDIATE, M_ACIM, READ, 2 },
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/* 2c */ { "BIT", ABSOLUTE, M_ABS, READ, 4 }, /* Absolute */
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/* 2d */ { "AND", ABSOLUTE, M_ABS, READ, 4 }, /* Absolute */
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@ -1135,30 +1135,30 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* 30 */ { "BMI", RELATIVE, M_REL, READ, 2 },
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/* 31 */ { "AND", INDIRECT_Y, M_INDY, READ, 5 }, /* (Indirect),Y */
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/* 32 */ { "jam", IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 32 */ { ".jam",IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 33 */ { "rla", INDIRECT_Y, M_INDY, WRITE, 8 },
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/* 34 */ { "nop", ZERO_PAGE_X, M_NONE, NONE, 4 },
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/* 34 */ { ".nop",ZERO_PAGE_X, M_NONE, NONE, 4 },
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/* 35 */ { "AND", ZERO_PAGE_X, M_ZERX, READ, 4 }, /* Zeropage,X */
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/* 36 */ { "ROL", ZERO_PAGE_X, M_ZERX, WRITE, 6 }, /* Zeropage,X */
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/* 37 */ { "rla", ZERO_PAGE_X, M_ZERX, WRITE, 6 },
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/* 38 */ { "SEC", IMPLIED, M_NONE, NONE, 2 },
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/* 39 */ { "AND", ABSOLUTE_Y, M_ABSY, READ, 4 }, /* Absolute,Y */
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/* 3a */ { "nop", IMPLIED, M_NONE, NONE, 2 },
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/* 3a */ { ".nop",IMPLIED, M_NONE, NONE, 2 },
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/* 3b */ { "rla", ABSOLUTE_Y, M_ABSY, WRITE, 7 },
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/* 3c */ { "nop", ABSOLUTE_X, M_NONE, NONE, 4 },
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/* 3c */ { ".nop",ABSOLUTE_X, M_NONE, NONE, 4 },
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/* 3d */ { "AND", ABSOLUTE_X, M_ABSX, READ, 4 }, /* Absolute,X */
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/* 3e */ { "ROL", ABSOLUTE_X, M_ABSX, WRITE, 7 }, /* Absolute,X */
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/* 3f */ { "rla", ABSOLUTE_X, M_ABSX, WRITE, 7 },
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/* 40 */ { "RTI", IMPLIED, M_NONE, NONE, 6 },
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/* 41 */ { "EOR", INDIRECT_X, M_INDX, READ, 6 }, /* (Indirect,X) */
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/* 42 */ { "jam", IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 42 */ { ".jam",IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 43 */ { "sre", INDIRECT_X, M_INDX, WRITE, 8 },
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/* 44 */ { "nop", ZERO_PAGE, M_NONE, NONE, 3 },
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/* 44 */ { ".nop",ZERO_PAGE, M_NONE, NONE, 3 },
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/* 45 */ { "EOR", ZERO_PAGE, M_ZERO, READ, 3 }, /* Zeropage */
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/* 46 */ { "LSR", ZERO_PAGE, M_ZERO, WRITE, 5 }, /* Zeropage */
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/* 47 */ { "sre", ZERO_PAGE, M_ZERO, WRITE, 5 },
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@ -1175,30 +1175,30 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* 50 */ { "BVC", RELATIVE, M_REL, READ, 2 },
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/* 51 */ { "EOR", INDIRECT_Y, M_INDY, READ, 5 }, /* (Indirect),Y */
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/* 52 */ { "jam", IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 52 */ { ".jam",IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 53 */ { "sre", INDIRECT_Y, M_INDY, WRITE, 8 },
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/* 54 */ { "nop", ZERO_PAGE_X, M_NONE, NONE, 4 },
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/* 54 */ { ".nop",ZERO_PAGE_X, M_NONE, NONE, 4 },
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/* 55 */ { "EOR", ZERO_PAGE_X, M_ZERX, READ, 4 }, /* Zeropage,X */
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/* 56 */ { "LSR", ZERO_PAGE_X, M_ZERX, WRITE, 6 }, /* Zeropage,X */
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/* 57 */ { "sre", ZERO_PAGE_X, M_ZERX, WRITE, 6 },
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/* 58 */ { "CLI", IMPLIED, M_NONE, NONE, 2 },
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/* 59 */ { "EOR", ABSOLUTE_Y, M_ABSY, READ, 4 }, /* Absolute,Y */
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/* 5a */ { "nop", IMPLIED, M_NONE, NONE, 2 },
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/* 5a */ { ".nop",IMPLIED, M_NONE, NONE, 2 },
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/* 5b */ { "sre", ABSOLUTE_Y, M_ABSY, WRITE, 7 },
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/* 5c */ { "nop", ABSOLUTE_X, M_NONE, NONE, 4 },
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/* 5c */ { ".nop",ABSOLUTE_X, M_NONE, NONE, 4 },
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/* 5d */ { "EOR", ABSOLUTE_X, M_ABSX, READ, 4 }, /* Absolute,X */
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/* 5e */ { "LSR", ABSOLUTE_X, M_ABSX, WRITE, 7 }, /* Absolute,X */
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/* 5f */ { "sre", ABSOLUTE_X, M_ABSX, WRITE, 7 },
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/* 60 */ { "RTS", IMPLIED, M_NONE, NONE, 6 },
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/* 61 */ { "ADC", INDIRECT_X, M_INDX, READ, 6 }, /* (Indirect,X) */
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/* 62 */ { "jam", IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 62 */ { ".jam",IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* 63 */ { "rra", INDIRECT_X, M_INDX, WRITE, 8 },
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/* 64 */ { "nop", ZERO_PAGE, M_NONE, NONE, 3 },
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/* 64 */ { ".nop",ZERO_PAGE, M_NONE, NONE, 3 },
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/* 65 */ { "ADC", ZERO_PAGE, M_ZERO, READ, 3 }, /* Zeropage */
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/* 66 */ { "ROR", ZERO_PAGE, M_ZERO, WRITE, 5 }, /* Zeropage */
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/* 67 */ { "rra", ZERO_PAGE, M_ZERO, WRITE, 5 },
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@ -1215,20 +1215,20 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* 70 */ { "BVS", RELATIVE, M_REL, READ, 2 },
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/* 71 */ { "ADC", INDIRECT_Y, M_INDY, READ, 5 }, /* (Indirect),Y */
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/* 72 */ { "jam", IMPLIED, M_NONE, NONE, 0 }, /* TILT relative? */
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/* 72 */ { ".jam",IMPLIED, M_NONE, NONE, 0 }, /* TILT relative? */
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/* 73 */ { "rra", INDIRECT_Y, M_INDY, WRITE, 8 },
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/* 74 */ { "nop", ZERO_PAGE_X, M_NONE, NONE, 4 },
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/* 74 */ { ".nop",ZERO_PAGE_X, M_NONE, NONE, 4 },
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/* 75 */ { "ADC", ZERO_PAGE_X, M_ZERX, READ, 4 }, /* Zeropage,X */
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/* 76 */ { "ROR", ZERO_PAGE_X, M_ZERX, WRITE, 6 }, /* Zeropage,X */
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/* 77 */ { "rra", ZERO_PAGE_X, M_ZERX, WRITE, 6 },
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/* 78 */ { "SEI", IMPLIED, M_NONE, NONE, 2 },
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/* 79 */ { "ADC", ABSOLUTE_Y, M_ABSY, READ, 4 }, /* Absolute,Y */
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/* 7a */ { "nop", IMPLIED, M_NONE, NONE, 2 },
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/* 7a */ { ".nop",IMPLIED, M_NONE, NONE, 2 },
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/* 7b */ { "rra", ABSOLUTE_Y, M_ABSY, WRITE, 7 },
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/* 7c */ { "nop", ABSOLUTE_X, M_NONE, NONE, 4 },
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/* 7c */ { ".nop",ABSOLUTE_X, M_NONE, NONE, 4 },
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/* 7d */ { "ADC", ABSOLUTE_X, M_ABSX, READ, 4 }, /* Absolute,X */
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/* 7e */ { "ROR", ABSOLUTE_X, M_ABSX, WRITE, 7 }, /* Absolute,X */
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/* 7f */ { "rra", ABSOLUTE_X, M_ABSX, WRITE, 7 },
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@ -1237,7 +1237,7 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* 80 */ { "nop", IMMEDIATE, M_NONE, NONE, 2 },
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/* 81 */ { "STA", INDIRECT_X, M_AC, WRITE, 6 }, /* (Indirect,X) */
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/* 82 */ { "nop", IMMEDIATE, M_NONE, NONE, 2 },
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/* 82 */ { ".nop",IMMEDIATE, M_NONE, NONE, 2 },
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/* 83 */ { "sax", INDIRECT_X, M_ANXR, WRITE, 6 },
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/* 84 */ { "STY", ZERO_PAGE, M_YR, WRITE, 3 }, /* Zeropage */
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@ -1246,7 +1246,7 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* 87 */ { "sax", ZERO_PAGE, M_ANXR, WRITE, 3 },
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/* 88 */ { "DEY", IMPLIED, M_YR, NONE, 2 },
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/* 89 */ { "nop", IMMEDIATE, M_NONE, NONE, 2 },
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/* 89 */ { ".nop",IMMEDIATE, M_NONE, NONE, 2 },
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/* 8a */ { "TXA", IMPLIED, M_XR, NONE, 2 },
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/**** very abnormal: usually AC = AC | #$EE & XR & #$oper ****/
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/* 8b */ { "ane", IMMEDIATE, M_AXIM, READ, 2 },
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@ -1258,7 +1258,7 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* 90 */ { "BCC", RELATIVE, M_REL, READ, 2 },
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/* 91 */ { "STA", INDIRECT_Y, M_AC, WRITE, 6 }, /* (Indirect),Y */
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/* 92 */ { "jam", IMPLIED, M_NONE, NONE, 0 }, /* TILT relative? */
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/* 92 */ { ".jam",IMPLIED, M_NONE, NONE, 0 }, /* TILT relative? */
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/* 93 */ { "sha", INDIRECT_Y, M_ANXR, WRITE, 6 },
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/* 94 */ { "STY", ZERO_PAGE_X, M_YR, WRITE, 4 }, /* Zeropage,X */
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@ -1299,7 +1299,7 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* b0 */ { "BCS", RELATIVE, M_REL, READ, 2 },
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/* b1 */ { "LDA", INDIRECT_Y, M_INDY, READ, 5 }, /* (indirect),Y */
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/* b2 */ { "jam", IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* b2 */ { ".jam",IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* b3 */ { "lax", INDIRECT_Y, M_INDY, READ, 5 },
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/* b4 */ { "LDY", ZERO_PAGE_X, M_ZERX, READ, 4 }, /* Zeropage,X */
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@ -1319,7 +1319,7 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* c0 */ { "CPY", IMMEDIATE, M_IMM, READ, 2 }, /* Immediate */
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/* c1 */ { "CMP", INDIRECT_X, M_INDX, READ, 6 }, /* (Indirect,X) */
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/* c2 */ { "nop", IMMEDIATE, M_NONE, NONE, 2 }, /* occasional TILT */
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/* c2 */ { ".nop",IMMEDIATE, M_NONE, NONE, 2 }, /* occasional TILT */
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/* c3 */ { "dcp", INDIRECT_X, M_INDX, WRITE, 8 },
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/* c4 */ { "CPY", ZERO_PAGE, M_ZERO, READ, 3 }, /* Zeropage */
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@ -1339,27 +1339,27 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* d0 */ { "BNE", RELATIVE, M_REL, READ, 2 },
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/* d1 */ { "CMP", INDIRECT_Y, M_INDY, READ, 5 }, /* (Indirect),Y */
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/* d2 */ { "jam", IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* d2 */ { ".jam",IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* d3 */ { "dcp", INDIRECT_Y, M_INDY, WRITE, 8 },
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/* d4 */ { "nop", ZERO_PAGE_X, M_NONE, NONE, 4 },
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/* d4 */ { ".nop",ZERO_PAGE_X, M_NONE, NONE, 4 },
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/* d5 */ { "CMP", ZERO_PAGE_X, M_ZERX, READ, 4 }, /* Zeropage,X */
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/* d6 */ { "DEC", ZERO_PAGE_X, M_ZERX, WRITE, 6 }, /* Zeropage,X */
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/* d7 */ { "dcp", ZERO_PAGE_X, M_ZERX, WRITE, 6 },
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/* d8 */ { "CLD", IMPLIED, M_NONE, NONE, 2 },
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/* d9 */ { "CMP", ABSOLUTE_Y, M_ABSY, READ, 4 }, /* Absolute,Y */
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/* da */ { "nop", IMPLIED, M_NONE, NONE, 2 },
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/* da */ { ".nop",IMPLIED, M_NONE, NONE, 2 },
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/* db */ { "dcp", ABSOLUTE_Y, M_ABSY, WRITE, 7 },
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/* dc */ { "nop", ABSOLUTE_X, M_NONE, NONE, 4 },
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/* dc */ { ".nop",ABSOLUTE_X, M_NONE, NONE, 4 },
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/* dd */ { "CMP", ABSOLUTE_X, M_ABSX, READ, 4 }, /* Absolute,X */
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/* de */ { "DEC", ABSOLUTE_X, M_ABSX, WRITE, 7 }, /* Absolute,X */
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/* df */ { "dcp", ABSOLUTE_X, M_ABSX, WRITE, 7 },
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/* e0 */ { "CPX", IMMEDIATE, M_IMM, READ, 2 }, /* Immediate */
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/* e1 */ { "SBC", INDIRECT_X, M_INDX, READ, 6 }, /* (Indirect,X) */
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/* e2 */ { "nop", IMMEDIATE, M_NONE, NONE, 2 },
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/* e2 */ { ".nop",IMMEDIATE, M_NONE, NONE, 2 },
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/* e3 */ { "isb", INDIRECT_X, M_INDX, WRITE, 8 },
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/* e4 */ { "CPX", ZERO_PAGE, M_ZERO, READ, 3 }, /* Zeropage */
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@ -1370,7 +1370,7 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* e8 */ { "INX", IMPLIED, M_XR, NONE, 2 },
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/* e9 */ { "SBC", IMMEDIATE, M_IMM, READ, 2 }, /* Immediate */
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/* ea */ { "NOP", IMPLIED, M_NONE, NONE, 2 },
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/* eb */ { "sbc", IMMEDIATE, M_IMM, READ, 2 }, /* same as e9 */
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/* eb */ { ".sbc",IMMEDIATE, M_IMM, READ, 2 }, /* same as e9 */
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/* ec */ { "CPX", ABSOLUTE, M_ABS, READ, 4 }, /* Absolute */
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/* ed */ { "SBC", ABSOLUTE, M_ABS, READ, 4 }, /* Absolute */
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@ -1379,20 +1379,20 @@ const DiStella::Instruction_tag DiStella::ourLookup[256] = {
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/* f0 */ { "BEQ", RELATIVE, M_REL, READ, 2 },
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/* f1 */ { "SBC", INDIRECT_Y, M_INDY, READ, 5 }, /* (Indirect),Y */
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/* f2 */ { "jam", IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* f2 */ { ".jam",IMPLIED, M_NONE, NONE, 0 }, /* TILT */
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/* f3 */ { "isb", INDIRECT_Y, M_INDY, WRITE, 8 },
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/* f4 */ { "nop", ZERO_PAGE_X, M_NONE, NONE, 4 },
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/* f4 */ { ".nop",ZERO_PAGE_X, M_NONE, NONE, 4 },
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/* f5 */ { "SBC", ZERO_PAGE_X, M_ZERX, READ, 4 }, /* Zeropage,X */
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/* f6 */ { "INC", ZERO_PAGE_X, M_ZERX, WRITE, 6 }, /* Zeropage,X */
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/* f7 */ { "isb", ZERO_PAGE_X, M_ZERX, WRITE, 6 },
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/* f8 */ { "SED", IMPLIED, M_NONE, NONE, 2 },
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/* f9 */ { "SBC", ABSOLUTE_Y, M_ABSY, READ, 4 }, /* Absolute,Y */
|
||||
/* fa */ { "nop", IMPLIED, M_NONE, NONE, 2 },
|
||||
/* fa */ { ".nop",IMPLIED, M_NONE, NONE, 2 },
|
||||
/* fb */ { "isb", ABSOLUTE_Y, M_ABSY, WRITE, 7 },
|
||||
|
||||
/* fc */ { "nop", ABSOLUTE_X, M_NONE, NONE, 4 },
|
||||
/* fc */ { ".nop",ABSOLUTE_X, M_NONE, NONE, 4 },
|
||||
/* fd */ { "SBC", ABSOLUTE_X, M_ABSX, READ, 4 }, /* Absolute,X */
|
||||
/* fe */ { "INC", ABSOLUTE_X, M_ABSX, WRITE, 7 }, /* Absolute,X */
|
||||
/* ff */ { "isb", ABSOLUTE_X, M_ABSX, WRITE, 7 }
|
||||
|
|
|
|||
Loading…
Reference in New Issue