ref: 02754b2f0937d94bb90f7f742f4f7aa6dad06bd4
dir: /snes/tracing.c/
#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <stdbool.h>
#include "tracing.h"
#include "snes.h"
#include "apu.h"
// name for each opcode, to be filled in with sprintf (length = 14 (13+\0))
static const char* opcodeNames[256] = {
"brk ", "ora ($%02x,x) ", "cop #$%02x ", "ora $%02x,s ", "tsb $%02x ", "ora $%02x ", "asl $%02x ", "ora [$%02x] ", "php ", "ora #$%04x ", "asl ", "phd ", "tsb $%04x ", "ora $%04x ", "asl $%04x ", "ora $%06x ",
"bpl $%04x ", "ora ($%02x),y ", "ora ($%02x) ", "ora ($%02x,s),y", "trb $%02x ", "ora $%02x,x ", "asl $%02x,x ", "ora [$%02x],y ", "clc ", "ora $%04x,y ", "inc ", "tcs ", "trb $%04x ", "ora $%04x,x ", "asl $%04x,x ", "ora $%06x,x",
"jsr $%04x ", "and ($%02x,x) ", "jsl $%06x ", "and $%02x,s ", "bit $%02x ", "and $%02x ", "rol $%02x ", "and [$%02x] ", "plp ", "and #$%04x ", "rol ", "pld ", "bit $%04x ", "and $%04x ", "rol $%04x ", "and $%06x ",
"bmi $%04x ", "and ($%02x),y ", "and ($%02x) ", "and ($%02x,s),y", "bit $%02x,x ", "and $%02x,x ", "rol $%02x,x ", "and [$%02x],y ", "sec ", "and $%04x,y ", "dec ", "tsc ", "bit $%04x,x ", "and $%04x,x ", "rol $%04x,x ", "and $%06x,x",
"rti ", "eor ($%02x,x) ", "wdm #$%02x ", "eor $%02x,s ", "mvp $%02x, $%02x ", "eor $%02x ", "lsr $%02x ", "eor [$%02x] ", "pha ", "eor #$%04x ", "lsr ", "phk ", "jmp $%04x ", "eor $%04x ", "lsr $%04x ", "eor $%06x ",
"bvc $%04x ", "eor ($%02x),y ", "eor ($%02x) ", "eor ($%02x,s),y", "mvn $%02x, $%02x ", "eor $%02x,x ", "lsr $%02x,x ", "eor [$%02x],y ", "cli ", "eor $%04x,y ", "phy ", "tcd ", "jml $%06x ", "eor $%04x,x ", "lsr $%04x,x ", "eor $%06x,x",
"rts ", "adc ($%02x,x) ", "per $%04x ", "adc $%02x,s ", "stz $%02x ", "adc $%02x ", "ror $%02x ", "adc [$%02x] ", "pla ", "adc #$%04x ", "ror ", "rtl ", "jmp ($%04x) ", "adc $%04x ", "ror $%04x ", "adc $%06x ",
"bvs $%04x ", "adc ($%02x),y ", "adc ($%02x) ", "adc ($%02x,s),y", "stz $%02x,x ", "adc $%02x,x ", "ror $%02x,x ", "adc [$%02x],y ", "sei ", "adc $%04x,y ", "ply ", "tdc ", "jmp ($%04x,x)", "adc $%04x,x ", "ror $%04x,x ", "adc $%06x,x",
"bra $%04x ", "sta ($%02x,x) ", "brl $%04x ", "sta $%02x,s ", "sty $%02x ", "sta $%02x ", "stx $%02x ", "sta [$%02x] ", "dey ", "bit #$%04x ", "txa ", "phb ", "sty $%04x ", "sta $%04x ", "stx $%04x ", "sta $%06x ",
"bcc $%04x ", "sta ($%02x),y ", "sta ($%02x) ", "sta ($%02x,s),y", "sty $%02x,x ", "sta $%02x,x ", "stx $%02x,y ", "sta [$%02x],y ", "tya ", "sta $%04x,y ", "txs ", "txy ", "stz $%04x ", "sta $%04x,x ", "stz $%04x,x ", "sta $%06x,x",
"ldy #$%04x ", "lda ($%02x,x) ", "ldx #$%04x ", "lda $%02x,s ", "ldy $%02x ", "lda $%02x ", "ldx $%02x ", "lda [$%02x] ", "tay ", "lda #$%04x ", "tax ", "plb ", "ldy $%04x ", "lda $%04x ", "ldx $%04x ", "lda $%06x ",
"bcs $%04x ", "lda ($%02x),y ", "lda ($%02x) ", "lda ($%02x,s),y", "ldy $%02x,x ", "lda $%02x,x ", "ldx $%02x,y ", "lda [$%02x],y ", "clv ", "lda $%04x,y ", "tsx ", "tyx ", "ldy $%04x,x ", "lda $%04x,x ", "ldx $%04x,y ", "lda $%06x,x",
"cpy #$%04x ", "cmp ($%02x,x) ", "rep #$%02x ", "cmp $%02x,s ", "cpy $%02x ", "cmp $%02x ", "dec $%02x ", "cmp [$%02x] ", "iny ", "cmp #$%04x ", "dex ", "wai ", "cpy $%04x ", "cmp $%04x ", "dec $%04x ", "cmp $%06x ",
"bne $%04x ", "cmp ($%02x),y ", "cmp ($%02x) ", "cmp ($%02x,s),y", "pei $%02x ", "cmp $%02x,x ", "dec $%02x,x ", "cmp [$%02x],y ", "cld ", "cmp $%04x,y ", "phx ", "stp ", "jml [$%04x] ", "cmp $%04x,x ", "dec $%04x,x ", "cmp $%06x,x",
"cpx #$%04x ", "sbc ($%02x,x) ", "sep #$%02x ", "sbc $%02x,s ", "cpx $%02x ", "sbc $%02x ", "inc $%02x ", "sbc [$%02x] ", "inx ", "sbc #$%04x ", "nop ", "xba ", "cpx $%04x ", "sbc $%04x ", "inc $%04x ", "sbc $%06x ",
"beq $%04x ", "sbc ($%02x),y ", "sbc ($%02x) ", "sbc ($%02x,s),y", "pea #$%04x ", "sbc $%02x,x ", "inc $%02x,x ", "sbc [$%02x],y ", "sed ", "sbc $%04x,y ", "plx ", "xce ", "jsr ($%04x,x)", "sbc $%04x,x ", "inc $%04x,x ", "sbc $%06x,x"
};
// for 8/16 bit immediates
// TODO: probably a better way to do this...
static const char* opcodeNamesSp[256] = {
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "ora #$%02x ", NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "and #$%02x ", NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "eor #$%02x ", NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "adc #$%02x ", NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "bit #$%02x ", NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
"ldy #$%02x ", NULL, "ldx #$%02x ", NULL, NULL, NULL, NULL, NULL, NULL, "lda #$%02x ", NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
"cpy #$%02x ", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "cmp #$%02x ", NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
"cpx #$%02x ", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "sbc #$%02x ", NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
};
// address types for each opcode
static const int opcodeType[256] = {
0, 1, 1, 1, 1, 1, 1, 1, 0, 4, 0, 0, 2, 2, 2, 3,
6, 1, 1, 1, 1, 1, 1, 1, 0, 2, 0, 0, 2, 2, 2, 3,
2, 1, 3, 1, 1, 1, 1, 1, 0, 4, 0, 0, 2, 2, 2, 3,
6, 1, 1, 1, 1, 1, 1, 1, 0, 2, 0, 0, 2, 2, 2, 3,
0, 1, 1, 1, 8, 1, 1, 1, 0, 4, 0, 0, 2, 2, 2, 3,
6, 1, 1, 1, 8, 1, 1, 1, 0, 2, 0, 0, 3, 2, 2, 3,
0, 1, 7, 1, 1, 1, 1, 1, 0, 4, 0, 0, 2, 2, 2, 3,
6, 1, 1, 1, 1, 1, 1, 1, 0, 2, 0, 0, 2, 2, 2, 3,
6, 1, 7, 1, 1, 1, 1, 1, 0, 4, 0, 0, 2, 2, 2, 3,
6, 1, 1, 1, 1, 1, 1, 1, 0, 2, 0, 0, 2, 2, 2, 3,
5, 1, 5, 1, 1, 1, 1, 1, 0, 4, 0, 0, 2, 2, 2, 3,
6, 1, 1, 1, 1, 1, 1, 1, 0, 2, 0, 0, 2, 2, 2, 3,
5, 1, 1, 1, 1, 1, 1, 1, 0, 4, 0, 0, 2, 2, 2, 3,
6, 1, 1, 1, 1, 1, 1, 1, 0, 2, 0, 0, 2, 2, 2, 3,
5, 1, 1, 1, 1, 1, 1, 1, 0, 4, 0, 0, 2, 2, 2, 3,
6, 1, 1, 1, 2, 1, 1, 1, 0, 2, 0, 0, 2, 2, 2, 3
};
// name for each opcode, for spc
static const char* opcodeNamesSpc[256] = {
"nop ", "tcall 0 ", "set1 $%02x.0 ", "bbs $%02x.0, $%04x ", "or a, $%02x ", "or a, $%04x ", "or a, [X] ", "or a, [$%02x+x] ", "or a, #$%02x ", "or $%02x, $%02x ", "or1 c, $%04x.%01x ", "asl $%02x ", "asl $%04x ", "push p ", "tset $%04x ", "brk ",
"bpl $%04x ", "tcall 1 ", "clr1 $%02x.0 ", "bbc $%02x.0, $%04x ", "or a, $%02x+x ", "or a, $%04x+x ", "or a, $%04x+y ", "or a, [$%02x]+y ", "or $%02x, #$%02x ", "or [X], [Y] ", "decw $%02x ", "asl $%02x+x ", "asl a ", "dec x ", "cmp x, $%04x ", "jmp [$%04x+x] ",
"clrp ", "tcall 2 ", "set1 $%02x.1 ", "bbs $%02x.1, $%04x ", "and a, $%02x ", "and a, $%04x ", "and a, [X] ", "and a, [$%02x+x] ", "and a, #$%02x ", "and $%02x, $%02x ", "or1 c, /$%04x.%01x ", "rol $%02x ", "rol $%04x ", "push a ", "cbne $%02x, $%04x ", "bra $%04x ",
"bmi $%04x ", "tcall 3 ", "clr1 $%02x.1 ", "bbc $%02x.1, $%04x ", "and a, $%02x+x ", "and a, $%04x+x ", "and a, $%04x+y ", "and a, [$%02x]+y ", "and $%02x, #$%02x ", "and [X], [Y] ", "incw $%02x ", "rol $%02x+x ", "rol a ", "inc x ", "cmp x, $%02x ", "call $%04x ",
"setp ", "tcall 4 ", "set1 $%02x.2 ", "bbs $%02x.2, $%04x ", "eor a, $%02x ", "eor a, $%04x ", "eor a, [X] ", "eor a, [$%02x+x] ", "eor a, #$%02x ", "eor $%02x, $%02x ", "and1 c, $%04x.%01x ", "lsr $%02x ", "lsr $%04x ", "push x ", "tclr $%04x ", "pcall $%02x ",
"bvc $%04x ", "tcall 5 ", "clr1 $%02x.2 ", "bbc $%02x.2, $%04x ", "eor a, $%02x+x ", "eor a, $%04x+x ", "eor a, $%04x+y ", "eor a, [$%02x]+y ", "eor $%02x, #$%02x ", "eor [X], [Y] ", "cmpw ya, $%02x ", "lsr $%02x+x ", "lsr a ", "mov x, a ", "cmp y, $%04x ", "jmp $%04x ",
"clrc ", "tcall 6 ", "set1 $%02x.3 ", "bbs $%02x.3, $%04x ", "cmp a, $%02x ", "cmp a, $%04x ", "cmp a, [X] ", "cmp a, [$%02x+x] ", "cmp a, #$%02x ", "cmp $%02x, $%02x ", "and1 c, /$%04x.%01x ", "ror $%02x ", "ror $%04x ", "push y ", "dbnz $%02x, $%04x ", "ret ",
"bvs $%04x ", "tcall 7 ", "clr1 $%02x.3 ", "bbc $%02x.3, $%04x ", "cmp a, $%02x+x ", "cmp a, $%04x+x ", "cmp a, $%04x+y ", "cmp a, [$%02x]+y ", "cmp $%02x, #$%02x ", "cmp [X], [Y] ", "addw ya, $%02x ", "ror $%02x+x ", "ror a ", "mov a, x ", "cmp y, $%02x ", "reti ",
"setc ", "tcall 8 ", "set1 $%02x.4 ", "bbs $%02x.4, $%04x ", "adc a, $%02x ", "adc a, $%04x ", "adc a, [X] ", "adc a, [$%02x+x] ", "adc a, #$%02x ", "adc $%02x, $%02x ", "eor1 c, $%04x.%01x ", "dec $%02x ", "dec $%04x ", "mov y, #$%02x ", "pop p ", "mov $%02x, #$%02x ",
"bcc $%04x ", "tcall 9 ", "clr1 $%02x.4 ", "bbc $%02x.4, $%04x ", "adc a, $%02x+x ", "adc a, $%04x+x ", "adc a, $%04x+y ", "adc a, [$%02x]+y ", "adc $%02x, #$%02x ", "adc [X], [Y] ", "subw ya, $%02x ", "dec $%02x+x ", "dec a ", "mov x, sp ", "div ya, x ", "xcn a ",
"ei ", "tcall 10 ", "set1 $%02x.5 ", "bbs $%02x.5, $%04x ", "sbc a, $%02x ", "sbc a, $%04x ", "sbc a, [X] ", "sbc a, [$%02x+x] ", "sbc a, #$%02x ", "sbc $%02x, $%02x ", "mov1 c, $%04x.%01x ", "inc $%02x ", "inc $%04x ", "cmp y, #$%02x ", "pop a ", "mov [x+], a ",
"bcs $%04x ", "tcall 11 ", "clr1 $%02x.5 ", "bbc $%02x.5, $%04x ", "sbc a, $%02x+x ", "sbc a, $%04x+x ", "sbc a, $%04x+y ", "sbc a, [$%02x]+y ", "sbc $%02x, #$%02x ", "sbc [X], [Y] ", "movw ya, $%02x ", "inc $%02x+x ", "inc a ", "mov sp, x ", "das a ", "mov a, [x+] ",
"di ", "tcall 12 ", "set1 $%02x.6 ", "bbs $%02x.6, $%04x ", "mov $%02x, a ", "mov $%04x, a ", "mov [X], a ", "mov [$%02x+x], a ", "cmp x, #$%02x ", "mov $%04x, x ", "mov1 $%04x.%01x, c ", "mov $%02x, y ", "mov $%04x, y ", "mov x, #$%02x ", "pop x ", "mul ya ",
"bne $%04x ", "tcall 13 ", "clr1 $%02x.6 ", "bbc $%02x.6, $%04x ", "mov $%02x+x, a ", "mov $%04x+x, a ", "mov $%04x+y, a ", "mov [$%02x]+y, a ", "mov $%02x, x ", "mov $%02x+y, x ", "movw $%02x, ya ", "mov $%02x+x, y ", "dec y ", "mov a, y ", "cbne $%02x+x, $%04x", "daa a ",
"clrv ", "tcall 14 ", "set1 $%02x.7 ", "bbs $%02x.7, $%04x ", "mov a, $%02x ", "mov a, $%04x ", "mov a, [X] ", "mov a, [$%02x+x] ", "mov a, #$%02x ", "mov x, $%04x ", "not1 $%04x.%01x ", "mov y, $%02x ", "mov y, $%04x ", "notc ", "pop y ", "sleep ",
"beq $%04x ", "tcall 15 ", "clr1 $%02x.7 ", "bbc $%02x.7, $%04x ", "mov a, $%02x+x ", "mov a, $%04x+x ", "mov a, $%04x+y ", "mov a, [$%02x]+y ", "mov x, $%02x ", "mov x, $%02x+y ", "mov $%02x, $%02x ", "mov y, $%02x+x ", "inc y ", "mov y, a ", "dbnz y, $%04x ", "stop "
};
// address types for each opcode, for spc
static const int opcodeTypeSpc[256] = {
0, 0, 1, 5, 1, 2, 0, 1, 1, 4, 6, 1, 2, 0, 2, 0,
3, 0, 1, 5, 1, 2, 2, 1, 4, 0, 1, 1, 0, 0, 2, 2,
0, 0, 1, 5, 1, 2, 0, 1, 1, 4, 6, 1, 2, 0, 5, 3,
3, 0, 1, 5, 1, 2, 2, 1, 4, 0, 1, 1, 0, 0, 1, 2,
0, 0, 1, 5, 1, 2, 0, 1, 1, 4, 6, 1, 2, 0, 2, 1,
3, 0, 1, 5, 1, 2, 2, 1, 4, 0, 1, 1, 0, 0, 2, 2,
0, 0, 1, 5, 1, 2, 0, 1, 1, 4, 6, 1, 2, 0, 5, 0,
3, 0, 1, 5, 1, 2, 2, 1, 4, 0, 1, 1, 0, 0, 1, 0,
0, 0, 1, 5, 1, 2, 0, 1, 1, 4, 6, 1, 2, 1, 0, 4,
3, 0, 1, 5, 1, 2, 2, 1, 4, 0, 1, 1, 0, 0, 0, 0,
0, 0, 1, 5, 1, 2, 0, 1, 1, 4, 6, 1, 2, 1, 0, 0,
3, 0, 1, 5, 1, 2, 2, 1, 4, 0, 1, 1, 0, 0, 0, 0,
0, 0, 1, 5, 1, 2, 0, 1, 1, 2, 6, 1, 2, 1, 0, 0,
3, 0, 1, 5, 1, 2, 2, 1, 1, 1, 1, 1, 0, 0, 5, 0,
0, 0, 1, 5, 1, 2, 0, 1, 1, 2, 6, 1, 2, 0, 0, 0,
3, 0, 1, 5, 1, 2, 2, 1, 1, 1, 4, 1, 0, 0, 3, 0
};
static void getDisassemblyCpu(Snes* snes, char* line);
static void getDisassemblySpc(Apu *apu, char* line);
void getProcessorStateCpu(Snes* snes, char* line) {
// 0 1 2 3 4 5 6 7 8
// 12345678901234567890123456789012345678901234567890123456789012345678901234567890
// CPU 12:3456 1234567890123 A:1234 X:1234 Y:1234 SP:1234 DP:1234 DP:12 e nvmxdizc
char disLine[14] = " ";
getDisassemblyCpu(snes, disLine);
sprintf(
line, "CPU %02x:%04x %s A:%04x X:%04x Y:%04x SP:%04x DP:%04x DB:%02x %c %c%c%c%c%c%c%c%c",
snes->cpu->k, snes->cpu->pc, disLine, snes->cpu->a, snes->cpu->x, snes->cpu->y,
snes->cpu->sp, snes->cpu->dp, snes->cpu->db, snes->cpu->e ? 'E' : 'e',
snes->cpu->n ? 'N' : 'n', snes->cpu->v ? 'V' : 'v', snes->cpu->mf ? 'M' : 'm', snes->cpu->xf ? 'X' : 'x',
snes->cpu->d ? 'D' : 'd', snes->cpu->i ? 'I' : 'i', snes->cpu->z ? 'Z' : 'z', snes->cpu->c ? 'C' : 'c'
);
}
void getProcessorStateSpc(Apu *apu, char* line) {
// 0 1 2 3 4 5 6 7 8
// 12345678901234567890123456789012345678901234567890123456789012345678901234567890
// SPC 3456 12345678901234567 A:12 X:12 Y:12 SP:12 nvpbhizc
char disLine[18] = " ";
getDisassemblySpc(apu, disLine);
sprintf(
line, "SPC %04x %s A:%02x X:%02x Y:%02x SP:%02x %c%c%c%c%c%c%c%c",
apu->spc->pc, disLine, apu->spc->a, apu->spc->x, apu->spc->y, apu->spc->sp,
apu->spc->n ? 'N' : 'n', apu->spc->v ? 'V' : 'v', apu->spc->p ? 'P' : 'p', apu->spc->b ? 'B' : 'b',
apu->spc->h ? 'H' : 'h', apu->spc->i ? 'I' : 'i', apu->spc->z ? 'Z' : 'z', apu->spc->c ? 'C' : 'c'
);
}
static void getDisassemblyCpu(Snes* snes, char* line) {
uint32_t adr = snes->cpu->pc | (snes->cpu->k << 16);
// read 4 bytes
// TODO: this can have side effects, implement and use peaking
uint8_t opcode = snes_read(snes, adr);
uint8_t byte = snes_read(snes, (adr + 1) & 0xffffff);
uint8_t byte2 = snes_read(snes, (adr + 2) & 0xffffff);
uint16_t word = (byte2 << 8) | byte;
uint32_t longv = (snes_read(snes, (adr + 3) & 0xffffff) << 16) | word;
uint16_t rel = snes->cpu->pc + 2 + (int8_t) byte;
uint16_t rell = snes->cpu->pc + 3 + (int16_t) word;
// switch on type
switch(opcodeType[opcode]) {
case 0: sprintf(line, "%s", opcodeNames[opcode]); break;
case 1: sprintf(line, opcodeNames[opcode], byte); break;
case 2: sprintf(line, opcodeNames[opcode], word); break;
case 3: sprintf(line, opcodeNames[opcode], longv); break;
case 4: {
if(snes->cpu->mf) {
sprintf(line, opcodeNamesSp[opcode], byte);
} else {
sprintf(line, opcodeNames[opcode], word);
}
break;
}
case 5: {
if(snes->cpu->xf) {
sprintf(line, opcodeNamesSp[opcode], byte);
} else {
sprintf(line, opcodeNames[opcode], word);
}
break;
}
case 6: sprintf(line, opcodeNames[opcode], rel); break;
case 7: sprintf(line, opcodeNames[opcode], rell); break;
case 8: sprintf(line, opcodeNames[opcode], byte2, byte); break;
}
}
void getDisassemblySpc(Apu *apu, char* line) {
uint16_t adr = apu->spc->pc;
// read 3 bytes
// TODO: this can have side effects, implement and use peaking
uint8_t opcode = apu_cpuRead(apu, adr);
uint8_t byte = apu_cpuRead(apu, (adr + 1) & 0xffff);
uint8_t byte2 = apu_cpuRead(apu, (adr + 2) & 0xffff);
uint16_t word = (byte2 << 8) | byte;
uint16_t rel = apu->spc->pc + 2 + (int8_t) byte;
uint16_t rel2 = apu->spc->pc + 2 + (int8_t) byte2;
uint16_t wordb = word & 0x1fff;
uint8_t bit = word >> 13;
// switch on type
switch(opcodeTypeSpc[opcode]) {
case 0: sprintf(line, "%s", opcodeNamesSpc[opcode]); break;
case 1: sprintf(line, opcodeNamesSpc[opcode], byte); break;
case 2: sprintf(line, opcodeNamesSpc[opcode], word); break;
case 3: sprintf(line, opcodeNamesSpc[opcode], rel); break;
case 4: sprintf(line, opcodeNamesSpc[opcode], byte2, byte); break;
case 5: sprintf(line, opcodeNamesSpc[opcode], byte, rel2); break;
case 6: sprintf(line, opcodeNamesSpc[opcode], wordb, bit); break;
}
}