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https://github.com/st3fan/ewm.git
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Fixes #14 - Introduce a strict mode
This commit is contained in:
Stefan Arentz
parent
d6bb1e5371
commit
e66c4fd87f
58
cpu.c
58
cpu.c
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@ -25,6 +25,7 @@
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <inttypes.h>
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#include <stdlib.h>
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#include <unistd.h>
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@ -63,6 +64,14 @@ uint16_t _cpu_pull_word(struct cpu_t *cpu) {
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return (uint16_t) _cpu_pull_byte(cpu) | ((uint16_t) _cpu_pull_byte(cpu) << 8);
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}
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uint8_t _cpu_stack_free(struct cpu_t *cpu) {
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return cpu->state.sp;
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}
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uint8_t _cpu_stack_used(struct cpu_t *cpu) {
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return 0xff - cpu->state.sp;
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}
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// Because we keep the processor status bits in separate fields, we
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// need a function to combine them into a single register. This is
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// only used when we need to push the register on the stack for
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@ -237,6 +246,19 @@ static int cpu_execute_instruction(struct cpu_t *cpu) {
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return EWM_CPU_ERR_UNIMPLEMENTED_INSTRUCTION;
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}
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// If strict mode and if we need the stack, check if that works out
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if (cpu->strict && i->stack != 0) {
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if (i->stack > 0) {
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if (_cpu_stack_free(cpu) < i->stack) {
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return EWM_CPU_ERR_STACK_OVERFLOW;
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}
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} else {
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if (_cpu_stack_used(cpu) < -(i->stack)) {
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return EWM_CPU_ERR_STACK_UNDERFLOW;
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}
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}
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}
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/* Remember the PC since some instructions modify it */
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uint16_t pc = cpu->state.pc;
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@ -409,6 +431,10 @@ void cpu_add_iom(struct cpu_t *cpu, uint16_t start, uint16_t length, void *obj,
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cpu_add_mem(cpu, mem);
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}
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void cpu_strict(struct cpu_t *cpu, bool strict) {
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cpu->strict = true;
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}
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void cpu_trace(struct cpu_t *cpu, uint8_t trace) {
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cpu->trace = trace;
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}
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@ -429,18 +455,30 @@ void cpu_reset(struct cpu_t *cpu) {
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cpu->state.sp = 0xff;
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}
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void cpu_irq(struct cpu_t *cpu) {
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_cpu_push_word(cpu, cpu->state.pc);
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_cpu_push_byte(cpu, _cpu_get_status(cpu));
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cpu->state.i = 1;
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cpu->state.pc = mem_get_word(cpu, EWM_VECTOR_IRQ);
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int cpu_irq(struct cpu_t *cpu) {
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if (cpu->strict && _cpu_stack_free(cpu) < 3) {
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return EWM_CPU_ERR_STACK_OVERFLOW;
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}
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_cpu_push_word(cpu, cpu->state.pc);
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_cpu_push_byte(cpu, _cpu_get_status(cpu));
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cpu->state.i = 1;
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cpu->state.pc = mem_get_word(cpu, EWM_VECTOR_IRQ);
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return 0;
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}
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void cpu_nmi(struct cpu_t *cpu) {
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_cpu_push_word(cpu, cpu->state.pc);
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_cpu_push_byte(cpu, _cpu_get_status(cpu));
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cpu->state.i = 1;
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cpu->state.pc = mem_get_word(cpu, EWM_VECTOR_NMI);
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int cpu_nmi(struct cpu_t *cpu) {
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if (cpu->strict && _cpu_stack_free(cpu) < 3) {
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return EWM_CPU_ERR_STACK_OVERFLOW;
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}
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_cpu_push_word(cpu, cpu->state.pc);
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_cpu_push_byte(cpu, _cpu_get_status(cpu));
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cpu->state.i = 1;
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cpu->state.pc = mem_get_word(cpu, EWM_VECTOR_NMI);
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return 0;
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}
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int cpu_run(struct cpu_t *cpu) {
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10
cpu.h
10
cpu.h
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@ -23,6 +23,7 @@
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#ifndef CPU_H
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#define CPU_H
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#include <stdbool.h>
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#include <stdint.h>
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#define EWM_CPU_ERR_UNIMPLEMENTED_INSTRUCTION (-1)
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@ -42,6 +43,7 @@ struct cpu_state_t {
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struct cpu_t {
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struct cpu_state_t state;
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uint8_t trace;
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bool strict;
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struct mem_t *mem;
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uint8_t *memory; // This is pointing to the first 2 pages of memory, zero page and stack.
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};
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@ -69,6 +71,9 @@ void _cpu_push_word(struct cpu_t *cpu, uint16_t w);
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uint8_t _cpu_pull_byte(struct cpu_t *cpu);
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uint16_t _cpu_pull_word(struct cpu_t *cpu);
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uint8_t _cpu_stack_free(struct cpu_t *cpu);
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uint8_t _cpu_stack_used(struct cpu_t *cpu);
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// Private. How do we keep them private?
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uint8_t _cpu_get_status(struct cpu_t *cpu);
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void _cpu_set_status(struct cpu_t *cpu, uint8_t status);
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@ -81,11 +86,12 @@ void cpu_add_rom_file(struct cpu_t *cpu, uint16_t start, char *path);
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void cpu_add_rom_data(struct cpu_t *cpu, uint16_t start, uint16_t length, uint8_t *data);
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void cpu_add_iom(struct cpu_t *cpu, uint16_t start, uint16_t length, void *obj, mem_read_handler_t read_handler, mem_write_handler_t write_handler);
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void cpu_strict(struct cpu_t *cpu, bool strict);
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void cpu_trace(struct cpu_t *cpu, uint8_t trace);
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void cpu_reset(struct cpu_t *cpu);
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void cpu_irq(struct cpu_t *cpu);
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void cpu_nmi(struct cpu_t *cpu);
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int cpu_irq(struct cpu_t *cpu);
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int cpu_nmi(struct cpu_t *cpu);
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int cpu_run(struct cpu_t *cpu);
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int cpu_boot(struct cpu_t *cpu);
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7
ewm.c
7
ewm.c
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@ -23,6 +23,7 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <getopt.h>
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#include <string.h>
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@ -81,6 +82,7 @@ static struct ewm_machine_t machines[] = {
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static struct option options[] = {
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{ "machine", required_argument, NULL, 'm' },
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{ "strict", no_argument, NULL, 's' },
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{ NULL, 0, NULL, 0 }
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};
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@ -95,6 +97,7 @@ static struct ewm_machine_t *machine_with_name(char *name) {
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int main(int argc, char **argv) {
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struct ewm_machine_t *machine = NULL;
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bool strict = false;
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char ch;
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while ((ch = getopt_long(argc, argv, "m:", options, NULL)) != -1) {
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@ -102,6 +105,9 @@ int main(int argc, char **argv) {
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case 'm':
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machine = machine_with_name(optarg);
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break;
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case 's':
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strict = true;
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break;
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}
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}
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@ -115,6 +121,7 @@ int main(int argc, char **argv) {
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struct cpu_t cpu;
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cpu_init(&cpu);
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cpu_strict(&cpu, strict);
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(void) setup_replica1(&cpu);
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512
ins.c
512
ins.c
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@ -838,267 +838,267 @@ static void tya(struct cpu_t *cpu) {
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/* Instruction dispatch table */
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cpu_instruction_t instructions[256] = {
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/* 0x00 */ { "BRK", 0x00, 1, 2, (void*) brk },
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/* 0x01 */ { "ORA", 0x01, 2, 6, (void*) ora_indx },
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/* 0x02 */ { "???", 0x02, 1, 2, (void*) NULL },
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/* 0x03 */ { "???", 0x03, 1, 2, (void*) NULL },
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/* 0x04 */ { "???", 0x04, 1, 2, (void*) NULL },
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/* 0x05 */ { "ORA", 0x05, 2, 2, (void*) ora_zpg },
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/* 0x06 */ { "ASL", 0x06, 2, 5, (void*) asl_zpg },
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/* 0x07 */ { "???", 0x07, 1, 2, (void*) NULL },
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/* 0x08 */ { "???", 0x08, 1, 2, (void*) NULL },
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/* 0x09 */ { "ORA", 0x09, 2, 2, (void*) ora_imm },
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/* 0x0a */ { "ASL", 0x0a, 1, 2, (void*) asl_acc },
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/* 0x0b */ { "???", 0x0b, 1, 2, (void*) NULL },
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/* 0x0c */ { "???", 0x0c, 1, 2, (void*) NULL },
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/* 0x0d */ { "ORA", 0x0d, 3, 4, (void*) ora_abs },
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/* 0x0e */ { "ASL", 0x0e, 3, 6, (void*) asl_abs },
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/* 0x0f */ { "???", 0x0f, 1, 2, (void*) NULL },
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/* 0x10 */ { "BPL", 0x10, 2, 2, (void*) bpl },
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/* 0x11 */ { "ORA", 0x11, 2, 5, (void*) ora_indy },
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/* 0x12 */ { "???", 0x12, 1, 2, (void*) NULL },
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/* 0x13 */ { "???", 0x13, 1, 2, (void*) NULL },
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/* 0x14 */ { "???", 0x14, 1, 2, (void*) NULL },
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/* 0x15 */ { "ORA", 0x15, 2, 3, (void*) ora_zpgx },
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/* 0x16 */ { "ASL", 0x16, 2, 6, (void*) asl_zpgx },
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/* 0x17 */ { "???", 0x17, 1, 2, (void*) NULL },
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/* 0x18 */ { "CLC", 0x18, 1, 2, (void*) clc },
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/* 0x19 */ { "ORA", 0x19, 3, 4, (void*) ora_absy },
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/* 0x1a */ { "???", 0x1a, 1, 2, (void*) NULL },
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/* 0x1b */ { "???", 0x1b, 1, 2, (void*) NULL },
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/* 0x1c */ { "???", 0x1c, 1, 2, (void*) NULL },
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/* 0x1d */ { "ORA", 0x1d, 3, 4, (void*) ora_absx },
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/* 0x1e */ { "ASL", 0x1e, 3, 7, (void*) asl_absx },
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/* 0x1f */ { "???", 0x1f, 1, 2, (void*) NULL },
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/* 0x00 */ { "BRK", 0x00, 1, 2, 3, (void*) brk },
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/* 0x01 */ { "ORA", 0x01, 2, 6, 0, (void*) ora_indx },
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/* 0x02 */ { "???", 0x02, 1, 2, 0, (void*) NULL },
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/* 0x03 */ { "???", 0x03, 1, 2, 0, (void*) NULL },
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/* 0x04 */ { "???", 0x04, 1, 2, 0, (void*) NULL },
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/* 0x05 */ { "ORA", 0x05, 2, 2, 0, (void*) ora_zpg },
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/* 0x06 */ { "ASL", 0x06, 2, 5, 0, (void*) asl_zpg },
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/* 0x07 */ { "???", 0x07, 1, 2, 0, (void*) NULL },
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/* 0x08 */ { "???", 0x08, 1, 2, 0, (void*) NULL },
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/* 0x09 */ { "ORA", 0x09, 2, 2, 0, (void*) ora_imm },
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/* 0x0a */ { "ASL", 0x0a, 1, 2, 0, (void*) asl_acc },
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/* 0x0b */ { "???", 0x0b, 1, 2, 0, (void*) NULL },
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/* 0x0c */ { "???", 0x0c, 1, 2, 0, (void*) NULL },
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/* 0x0d */ { "ORA", 0x0d, 3, 4, 0, (void*) ora_abs },
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/* 0x0e */ { "ASL", 0x0e, 3, 6, 0, (void*) asl_abs },
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/* 0x0f */ { "???", 0x0f, 1, 2, 0, (void*) NULL },
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/* 0x10 */ { "BPL", 0x10, 2, 2, 0, (void*) bpl },
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/* 0x11 */ { "ORA", 0x11, 2, 5, 0, (void*) ora_indy },
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/* 0x12 */ { "???", 0x12, 1, 2, 0, (void*) NULL },
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/* 0x13 */ { "???", 0x13, 1, 2, 0, (void*) NULL },
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/* 0x14 */ { "???", 0x14, 1, 2, 0, (void*) NULL },
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/* 0x15 */ { "ORA", 0x15, 2, 3, 0, (void*) ora_zpgx },
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/* 0x16 */ { "ASL", 0x16, 2, 6, 0, (void*) asl_zpgx },
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/* 0x17 */ { "???", 0x17, 1, 2, 0, (void*) NULL },
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/* 0x18 */ { "CLC", 0x18, 1, 2, 0, (void*) clc },
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/* 0x19 */ { "ORA", 0x19, 3, 4, 0, (void*) ora_absy },
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/* 0x1a */ { "???", 0x1a, 1, 2, 0, (void*) NULL },
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/* 0x1b */ { "???", 0x1b, 1, 2, 0, (void*) NULL },
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/* 0x1c */ { "???", 0x1c, 1, 2, 0, (void*) NULL },
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/* 0x1d */ { "ORA", 0x1d, 3, 4, 0, (void*) ora_absx },
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/* 0x1e */ { "ASL", 0x1e, 3, 7, 0, (void*) asl_absx },
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/* 0x1f */ { "???", 0x1f, 1, 2, 0, (void*) NULL },
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/* 0x20 */ { "JSR", 0x20, 3, 6, (void*) jsr_abs },
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/* 0x21 */ { "AND", 0x21, 2, 6, (void*) and_indx },
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/* 0x22 */ { "???", 0x22, 1, 2, (void*) NULL },
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/* 0x23 */ { "???", 0x23, 1, 2, (void*) NULL },
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/* 0x24 */ { "BIT", 0x24, 2, 3, (void*) bit_zpg },
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/* 0x25 */ { "AND", 0x25, 2, 3, (void*) and_zpg },
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/* 0x26 */ { "ROL", 0x26, 2, 5, (void*) rol_zpg },
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/* 0x27 */ { "???", 0x27, 1, 2, (void*) NULL },
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/* 0x28 */ { "???", 0x28, 1, 2, (void*) NULL },
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/* 0x29 */ { "AND", 0x29, 2, 2, (void*) and_imm },
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/* 0x2a */ { "ROL", 0x2a, 1, 2, (void*) rol_acc },
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/* 0x2b */ { "???", 0x2b, 1, 2, (void*) NULL },
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/* 0x2c */ { "BIT", 0x2c, 3, 4, (void*) bit_abs },
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/* 0x2d */ { "AND", 0x2d, 3, 4, (void*) and_abs },
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/* 0x2e */ { "ROL", 0x2e, 3, 6, (void*) rol_abs },
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/* 0x2f */ { "???", 0x2f, 1, 2, (void*) NULL },
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/* 0x30 */ { "BMI", 0x30, 2, 2, (void*) bmi },
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/* 0x31 */ { "AND", 0x31, 2, 5, (void*) and_indy },
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/* 0x32 */ { "???", 0x32, 1, 2, (void*) NULL },
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/* 0x33 */ { "???", 0x33, 1, 2, (void*) NULL },
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/* 0x34 */ { "???", 0x34, 1, 2, (void*) NULL },
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/* 0x35 */ { "AND", 0x35, 2, 4, (void*) and_zpgx },
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/* 0x36 */ { "ROL", 0x36, 2, 6, (void*) rol_zpgx },
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/* 0x37 */ { "???", 0x37, 1, 2, (void*) NULL },
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/* 0x38 */ { "SEC", 0x38, 1, 2, (void*) sec },
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/* 0x39 */ { "AND", 0x39, 3, 4, (void*) and_absy },
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/* 0x3a */ { "???", 0x3a, 1, 2, (void*) NULL },
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/* 0x3b */ { "???", 0x3b, 1, 2, (void*) NULL },
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/* 0x3c */ { "???", 0x3c, 1, 2, (void*) NULL },
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/* 0x3d */ { "AND", 0x3d, 3, 4, (void*) and_absx },
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/* 0x3e */ { "ROL", 0x3e, 3, 7, (void*) rol_absx },
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/* 0x3f */ { "???", 0x3f, 1, 2, (void*) NULL },
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/* 0x20 */ { "JSR", 0x20, 3, 6, 2, (void*) jsr_abs },
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/* 0x21 */ { "AND", 0x21, 2, 6, 0, (void*) and_indx },
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/* 0x22 */ { "???", 0x22, 1, 2, 0, (void*) NULL },
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/* 0x23 */ { "???", 0x23, 1, 2, 0, (void*) NULL },
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/* 0x24 */ { "BIT", 0x24, 2, 3, 0, (void*) bit_zpg },
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/* 0x25 */ { "AND", 0x25, 2, 3, 0, (void*) and_zpg },
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/* 0x26 */ { "ROL", 0x26, 2, 5, 0, (void*) rol_zpg },
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/* 0x27 */ { "???", 0x27, 1, 2, 0, (void*) NULL },
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/* 0x28 */ { "???", 0x28, 1, 2, 0, (void*) NULL },
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/* 0x29 */ { "AND", 0x29, 2, 2, 0, (void*) and_imm },
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/* 0x2a */ { "ROL", 0x2a, 1, 2, 0, (void*) rol_acc },
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/* 0x2b */ { "???", 0x2b, 1, 2, 0, (void*) NULL },
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/* 0x2c */ { "BIT", 0x2c, 3, 4, 0, (void*) bit_abs },
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/* 0x2d */ { "AND", 0x2d, 3, 4, 0, (void*) and_abs },
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/* 0x2e */ { "ROL", 0x2e, 3, 6, 0, (void*) rol_abs },
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/* 0x2f */ { "???", 0x2f, 1, 2, 0, (void*) NULL },
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/* 0x30 */ { "BMI", 0x30, 2, 2, 0, (void*) bmi },
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/* 0x31 */ { "AND", 0x31, 2, 5, 0, (void*) and_indy },
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/* 0x32 */ { "???", 0x32, 1, 2, 0, (void*) NULL },
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/* 0x33 */ { "???", 0x33, 1, 2, 0, (void*) NULL },
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/* 0x34 */ { "???", 0x34, 1, 2, 0, (void*) NULL },
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/* 0x35 */ { "AND", 0x35, 2, 4, 0, (void*) and_zpgx },
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/* 0x36 */ { "ROL", 0x36, 2, 6, 0, (void*) rol_zpgx },
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/* 0x37 */ { "???", 0x37, 1, 2, 0, (void*) NULL },
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/* 0x38 */ { "SEC", 0x38, 1, 2, 0, (void*) sec },
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/* 0x39 */ { "AND", 0x39, 3, 4, 0, (void*) and_absy },
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/* 0x3a */ { "???", 0x3a, 1, 2, 0, (void*) NULL },
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/* 0x3b */ { "???", 0x3b, 1, 2, 0, (void*) NULL },
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/* 0x3c */ { "???", 0x3c, 1, 2, 0, (void*) NULL },
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/* 0x3d */ { "AND", 0x3d, 3, 4, 0, (void*) and_absx },
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/* 0x3e */ { "ROL", 0x3e, 3, 7, 0, (void*) rol_absx },
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/* 0x3f */ { "???", 0x3f, 1, 2, 0, (void*) NULL },
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/* 0x40 */ { "RTI", 0x40, 1, 6, (void*) rti },
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||||
/* 0x41 */ { "EOR", 0x41, 2, 6, (void*) eor_indx },
|
||||
/* 0x42 */ { "???", 0x42, 1, 2, (void*) NULL },
|
||||
/* 0x43 */ { "???", 0x43, 1, 2, (void*) NULL },
|
||||
/* 0x44 */ { "???", 0x44, 1, 2, (void*) NULL },
|
||||
/* 0x45 */ { "EOR", 0x45, 2, 3, (void*) eor_zpg },
|
||||
/* 0x46 */ { "LSR", 0x46, 2, 5, (void*) lsr_zpg },
|
||||
/* 0x47 */ { "???", 0x47, 1, 2, (void*) NULL },
|
||||
/* 0x48 */ { "PHA", 0x48, 1, 3, (void*) pha },
|
||||
/* 0x49 */ { "EOR", 0x49, 2, 2, (void*) eor_imm },
|
||||
/* 0x4a */ { "LSR", 0x4a, 1, 2, (void*) lsr_acc },
|
||||
/* 0x4b */ { "???", 0x4b, 1, 2, (void*) NULL },
|
||||
/* 0x4c */ { "JMP", 0x4c, 3, 3, (void*) jmp_abs },
|
||||
/* 0x4d */ { "EOR", 0x4d, 3, 4, (void*) eor_abs },
|
||||
/* 0x4e */ { "LSR", 0x4e, 3, 6, (void*) lsr_abs },
|
||||
/* 0x4f */ { "???", 0x4f, 1, 2, (void*) NULL },
|
||||
/* 0x50 */ { "BVC", 0x50, 2, 2, (void*) bvc },
|
||||
/* 0x51 */ { "EOR", 0x51, 2, 5, (void*) eor_indy },
|
||||
/* 0x52 */ { "???", 0x52, 1, 2, (void*) NULL },
|
||||
/* 0x53 */ { "???", 0x53, 1, 2, (void*) NULL },
|
||||
/* 0x54 */ { "???", 0x54, 1, 2, (void*) NULL },
|
||||
/* 0x55 */ { "EOR", 0x55, 2, 4, (void*) eor_zpgx },
|
||||
/* 0x56 */ { "LSR", 0x56, 2, 6, (void*) lsr_zpgx },
|
||||
/* 0x57 */ { "???", 0x57, 1, 2, (void*) NULL },
|
||||
/* 0x58 */ { "CLI", 0x58, 1, 2, (void*) cli },
|
||||
/* 0x59 */ { "EOR", 0x59, 3, 4, (void*) eor_absy },
|
||||
/* 0x5a */ { "???", 0x5a, 1, 2, (void*) NULL },
|
||||
/* 0x5b */ { "???", 0x5b, 1, 2, (void*) NULL },
|
||||
/* 0x5c */ { "???", 0x5c, 1, 2, (void*) NULL },
|
||||
/* 0x5d */ { "EOR", 0x5d, 3, 4, (void*) eor_absx },
|
||||
/* 0x5e */ { "LSR", 0x5e, 3, 7, (void*) lsr_absx },
|
||||
/* 0x5f */ { "???", 0x5f, 1, 2, (void*) NULL },
|
||||
/* 0x40 */ { "RTI", 0x40, 1, 6, -3, (void*) rti },
|
||||
/* 0x41 */ { "EOR", 0x41, 2, 6, 0, (void*) eor_indx },
|
||||
/* 0x42 */ { "???", 0x42, 1, 2, 0, (void*) NULL },
|
||||
/* 0x43 */ { "???", 0x43, 1, 2, 0, (void*) NULL },
|
||||
/* 0x44 */ { "???", 0x44, 1, 2, 0, (void*) NULL },
|
||||
/* 0x45 */ { "EOR", 0x45, 2, 3, 0, (void*) eor_zpg },
|
||||
/* 0x46 */ { "LSR", 0x46, 2, 5, 0, (void*) lsr_zpg },
|
||||
/* 0x47 */ { "???", 0x47, 1, 2, 0, (void*) NULL },
|
||||
/* 0x48 */ { "PHA", 0x48, 1, 3, 1, (void*) pha },
|
||||
/* 0x49 */ { "EOR", 0x49, 2, 2, 0, (void*) eor_imm },
|
||||
/* 0x4a */ { "LSR", 0x4a, 1, 2, 0, (void*) lsr_acc },
|
||||
/* 0x4b */ { "???", 0x4b, 1, 2, 0, (void*) NULL },
|
||||
/* 0x4c */ { "JMP", 0x4c, 3, 3, 0, (void*) jmp_abs },
|
||||
/* 0x4d */ { "EOR", 0x4d, 3, 4, 0, (void*) eor_abs },
|
||||
/* 0x4e */ { "LSR", 0x4e, 3, 6, 0, (void*) lsr_abs },
|
||||
/* 0x4f */ { "???", 0x4f, 1, 2, 0, (void*) NULL },
|
||||
/* 0x50 */ { "BVC", 0x50, 2, 2, 0, (void*) bvc },
|
||||
/* 0x51 */ { "EOR", 0x51, 2, 5, 0, (void*) eor_indy },
|
||||
/* 0x52 */ { "???", 0x52, 1, 2, 0, (void*) NULL },
|
||||
/* 0x53 */ { "???", 0x53, 1, 2, 0, (void*) NULL },
|
||||
/* 0x54 */ { "???", 0x54, 1, 2, 0, (void*) NULL },
|
||||
/* 0x55 */ { "EOR", 0x55, 2, 4, 0, (void*) eor_zpgx },
|
||||
/* 0x56 */ { "LSR", 0x56, 2, 6, 0, (void*) lsr_zpgx },
|
||||
/* 0x57 */ { "???", 0x57, 1, 2, 0, (void*) NULL },
|
||||
/* 0x58 */ { "CLI", 0x58, 1, 2, 0, (void*) cli },
|
||||
/* 0x59 */ { "EOR", 0x59, 3, 4, 0, (void*) eor_absy },
|
||||
/* 0x5a */ { "???", 0x5a, 1, 2, 0, (void*) NULL },
|
||||
/* 0x5b */ { "???", 0x5b, 1, 2, 0, (void*) NULL },
|
||||
/* 0x5c */ { "???", 0x5c, 1, 2, 0, (void*) NULL },
|
||||
/* 0x5d */ { "EOR", 0x5d, 3, 4, 0, (void*) eor_absx },
|
||||
/* 0x5e */ { "LSR", 0x5e, 3, 7, 0, (void*) lsr_absx },
|
||||
/* 0x5f */ { "???", 0x5f, 1, 2, 0, (void*) NULL },
|
||||
|
||||
/* 0x60 */ { "RTS", 0x60, 1, 6, (void*) rts },
|
||||
/* 0x61 */ { "ADC", 0x61, 2, 6, (void*) adc_indx },
|
||||
/* 0x62 */ { "???", 0x62, 1, 2, (void*) NULL },
|
||||
/* 0x63 */ { "???", 0x63, 1, 2, (void*) NULL },
|
||||
/* 0x64 */ { "???", 0x64, 1, 2, (void*) NULL },
|
||||
/* 0x65 */ { "ADC", 0x65, 2, 3, (void*) adc_zpg },
|
||||
/* 0x66 */ { "ROR", 0x66, 2, 5, (void*) ror_zpg },
|
||||
/* 0x67 */ { "???", 0x67, 1, 2, (void*) NULL },
|
||||
/* 0x68 */ { "PLA", 0x68, 1, 4, (void*) pla },
|
||||
/* 0x69 */ { "ADC", 0x69, 2, 2, (void*) adc_imm },
|
||||
/* 0x6a */ { "ROR", 0x6a, 1, 2, (void*) ror_acc },
|
||||
/* 0x6b */ { "???", 0x6b, 1, 2, (void*) NULL },
|
||||
/* 0x6c */ { "JMP", 0x6c, 3, 5, (void*) jmp_ind },
|
||||
/* 0x6d */ { "ADC", 0x6d, 3, 4, (void*) adc_abs },
|
||||
/* 0x6e */ { "ROR", 0x6e, 3, 6, (void*) ror_abs },
|
||||
/* 0x6f */ { "???", 0x6f, 1, 2, (void*) NULL },
|
||||
/* 0x70 */ { "BVS", 0x70, 2, 2, (void*) bvs },
|
||||
/* 0x71 */ { "ADC", 0x71, 2, 5, (void*) adc_indy },
|
||||
/* 0x72 */ { "???", 0x72, 1, 2, (void*) NULL },
|
||||
/* 0x73 */ { "???", 0x73, 1, 2, (void*) NULL },
|
||||
/* 0x74 */ { "???", 0x74, 1, 2, (void*) NULL },
|
||||
/* 0x75 */ { "ADC", 0x75, 2, 4, (void*) adc_zpgx },
|
||||
/* 0x76 */ { "ROR", 0x76, 2, 6, (void*) ror_zpgx },
|
||||
/* 0x77 */ { "???", 0x77, 1, 2, (void*) NULL },
|
||||
/* 0x78 */ { "SEI", 0x78, 1, 2, (void*) sei },
|
||||
/* 0x79 */ { "ADC", 0x79, 3, 4, (void*) adc_absy },
|
||||
/* 0x7a */ { "???", 0x7a, 1, 2, (void*) NULL },
|
||||
/* 0x7b */ { "???", 0x7b, 1, 2, (void*) NULL },
|
||||
/* 0x7c */ { "???", 0x7c, 1, 2, (void*) NULL },
|
||||
/* 0x7d */ { "ADC", 0x7d, 3, 4, (void*) adc_absx },
|
||||
/* 0x7e */ { "ROR", 0x7e, 3, 7, (void*) ror_absx },
|
||||
/* 0x7f */ { "???", 0x7f, 1, 2, (void*) NULL },
|
||||
/* 0x60 */ { "RTS", 0x60, 1, 6, -2, (void*) rts },
|
||||
/* 0x61 */ { "ADC", 0x61, 2, 6, 0, (void*) adc_indx },
|
||||
/* 0x62 */ { "???", 0x62, 1, 2, 0, (void*) NULL },
|
||||
/* 0x63 */ { "???", 0x63, 1, 2, 0, (void*) NULL },
|
||||
/* 0x64 */ { "???", 0x64, 1, 2, 0, (void*) NULL },
|
||||
/* 0x65 */ { "ADC", 0x65, 2, 3, 0, (void*) adc_zpg },
|
||||
/* 0x66 */ { "ROR", 0x66, 2, 5, 0, (void*) ror_zpg },
|
||||
/* 0x67 */ { "???", 0x67, 1, 2, 0, (void*) NULL },
|
||||
/* 0x68 */ { "PLA", 0x68, 1, 4, -1, (void*) pla },
|
||||
/* 0x69 */ { "ADC", 0x69, 2, 2, 0, (void*) adc_imm },
|
||||
/* 0x6a */ { "ROR", 0x6a, 1, 2, 0, (void*) ror_acc },
|
||||
/* 0x6b */ { "???", 0x6b, 1, 2, 0, (void*) NULL },
|
||||
/* 0x6c */ { "JMP", 0x6c, 3, 5, 0, (void*) jmp_ind },
|
||||
/* 0x6d */ { "ADC", 0x6d, 3, 4, 0, (void*) adc_abs },
|
||||
/* 0x6e */ { "ROR", 0x6e, 3, 6, 0, (void*) ror_abs },
|
||||
/* 0x6f */ { "???", 0x6f, 1, 2, 0, (void*) NULL },
|
||||
/* 0x70 */ { "BVS", 0x70, 2, 2, 0, (void*) bvs },
|
||||
/* 0x71 */ { "ADC", 0x71, 2, 5, 0, (void*) adc_indy },
|
||||
/* 0x72 */ { "???", 0x72, 1, 2, 0, (void*) NULL },
|
||||
/* 0x73 */ { "???", 0x73, 1, 2, 0, (void*) NULL },
|
||||
/* 0x74 */ { "???", 0x74, 1, 2, 0, (void*) NULL },
|
||||
/* 0x75 */ { "ADC", 0x75, 2, 4, 0, (void*) adc_zpgx },
|
||||
/* 0x76 */ { "ROR", 0x76, 2, 6, 0, (void*) ror_zpgx },
|
||||
/* 0x77 */ { "???", 0x77, 1, 2, 0, (void*) NULL },
|
||||
/* 0x78 */ { "SEI", 0x78, 1, 2, 0, (void*) sei },
|
||||
/* 0x79 */ { "ADC", 0x79, 3, 4, 0, (void*) adc_absy },
|
||||
/* 0x7a */ { "???", 0x7a, 1, 2, 0, (void*) NULL },
|
||||
/* 0x7b */ { "???", 0x7b, 1, 2, 0, (void*) NULL },
|
||||
/* 0x7c */ { "???", 0x7c, 1, 2, 0, (void*) NULL },
|
||||
/* 0x7d */ { "ADC", 0x7d, 3, 4, 0, (void*) adc_absx },
|
||||
/* 0x7e */ { "ROR", 0x7e, 3, 7, 0, (void*) ror_absx },
|
||||
/* 0x7f */ { "???", 0x7f, 1, 2, 0, (void*) NULL },
|
||||
|
||||
/* 0x80 */ { "???", 0x80, 1, 2, (void*) NULL },
|
||||
/* 0x81 */ { "STA", 0x81, 2, 6, (void*) sta_indx },
|
||||
/* 0x82 */ { "???", 0x82, 1, 2, (void*) NULL },
|
||||
/* 0x83 */ { "???", 0x83, 1, 2, (void*) NULL },
|
||||
/* 0x84 */ { "STY", 0x84, 2, 3, (void*) sty_zpg },
|
||||
/* 0x85 */ { "STA", 0x85, 2, 3, (void*) sta_zpg },
|
||||
/* 0x86 */ { "STX", 0x86, 2, 3, (void*) stx_zpg },
|
||||
/* 0x87 */ { "???", 0x87, 1, 2, (void*) NULL },
|
||||
/* 0x88 */ { "DEY", 0x88, 1, 2, (void*) dey },
|
||||
/* 0x89 */ { "???", 0x89, 1, 2, (void*) NULL },
|
||||
/* 0x8a */ { "TXA", 0x8a, 1, 2, (void*) txa },
|
||||
/* 0x8b */ { "???", 0x8b, 1, 2, (void*) NULL },
|
||||
/* 0x8c */ { "STY", 0x8c, 3, 4, (void*) sty_abs },
|
||||
/* 0x8d */ { "STA", 0x8d, 3, 4, (void*) sta_abs },
|
||||
/* 0x8e */ { "STX", 0x8e, 3, 4, (void*) stx_abs },
|
||||
/* 0x8f */ { "???", 0x8f, 1, 2, (void*) NULL },
|
||||
/* 0x90 */ { "BCC", 0x90, 2, 2, (void*) bcc },
|
||||
/* 0x91 */ { "STA", 0x91, 2, 6, (void*) sta_indy },
|
||||
/* 0x92 */ { "???", 0x92, 1, 2, (void*) NULL },
|
||||
/* 0x93 */ { "???", 0x93, 1, 2, (void*) NULL },
|
||||
/* 0x94 */ { "STY", 0x94, 2, 4, (void*) sty_zpgx },
|
||||
/* 0x95 */ { "STA", 0x95, 2, 4, (void*) sta_zpgx },
|
||||
/* 0x96 */ { "STX", 0x96, 2, 4, (void*) stx_zpgy },
|
||||
/* 0x97 */ { "???", 0x97, 1, 2, (void*) NULL },
|
||||
/* 0x98 */ { "TYA", 0x98, 1, 2, (void*) tya },
|
||||
/* 0x99 */ { "STA", 0x99, 3, 5, (void*) sta_absy },
|
||||
/* 0x9a */ { "TXS", 0x9a, 1, 2, (void*) txs },
|
||||
/* 0x9b */ { "???", 0x9b, 1, 2, (void*) NULL },
|
||||
/* 0x9c */ { "???", 0x9c, 1, 2, (void*) NULL },
|
||||
/* 0x9d */ { "STA", 0x9d, 2, 5, (void*) sta_absx },
|
||||
/* 0x9e */ { "???", 0x9e, 1, 2, (void*) NULL },
|
||||
/* 0x9f */ { "???", 0x9f, 1, 2, (void*) NULL },
|
||||
/* 0x80 */ { "???", 0x80, 1, 2, 0, (void*) NULL },
|
||||
/* 0x81 */ { "STA", 0x81, 2, 6, 0, (void*) sta_indx },
|
||||
/* 0x82 */ { "???", 0x82, 1, 2, 0, (void*) NULL },
|
||||
/* 0x83 */ { "???", 0x83, 1, 2, 0, (void*) NULL },
|
||||
/* 0x84 */ { "STY", 0x84, 2, 3, 0, (void*) sty_zpg },
|
||||
/* 0x85 */ { "STA", 0x85, 2, 3, 0, (void*) sta_zpg },
|
||||
/* 0x86 */ { "STX", 0x86, 2, 3, 0, (void*) stx_zpg },
|
||||
/* 0x87 */ { "???", 0x87, 1, 2, 0, (void*) NULL },
|
||||
/* 0x88 */ { "DEY", 0x88, 1, 2, 0, (void*) dey },
|
||||
/* 0x89 */ { "???", 0x89, 1, 2, 0, (void*) NULL },
|
||||
/* 0x8a */ { "TXA", 0x8a, 1, 2, 0, (void*) txa },
|
||||
/* 0x8b */ { "???", 0x8b, 1, 2, 0, (void*) NULL },
|
||||
/* 0x8c */ { "STY", 0x8c, 3, 4, 0, (void*) sty_abs },
|
||||
/* 0x8d */ { "STA", 0x8d, 3, 4, 0, (void*) sta_abs },
|
||||
/* 0x8e */ { "STX", 0x8e, 3, 4, 0, (void*) stx_abs },
|
||||
/* 0x8f */ { "???", 0x8f, 1, 2, 0, (void*) NULL },
|
||||
/* 0x90 */ { "BCC", 0x90, 2, 2, 0, (void*) bcc },
|
||||
/* 0x91 */ { "STA", 0x91, 2, 6, 0, (void*) sta_indy },
|
||||
/* 0x92 */ { "???", 0x92, 1, 2, 0, (void*) NULL },
|
||||
/* 0x93 */ { "???", 0x93, 1, 2, 0, (void*) NULL },
|
||||
/* 0x94 */ { "STY", 0x94, 2, 4, 0, (void*) sty_zpgx },
|
||||
/* 0x95 */ { "STA", 0x95, 2, 4, 0, (void*) sta_zpgx },
|
||||
/* 0x96 */ { "STX", 0x96, 2, 4, 0, (void*) stx_zpgy },
|
||||
/* 0x97 */ { "???", 0x97, 1, 2, 0, (void*) NULL },
|
||||
/* 0x98 */ { "TYA", 0x98, 1, 2, 0, (void*) tya },
|
||||
/* 0x99 */ { "STA", 0x99, 3, 5, 0, (void*) sta_absy },
|
||||
/* 0x9a */ { "TXS", 0x9a, 1, 2, 0, (void*) txs },
|
||||
/* 0x9b */ { "???", 0x9b, 1, 2, 0, (void*) NULL },
|
||||
/* 0x9c */ { "???", 0x9c, 1, 2, 0, (void*) NULL },
|
||||
/* 0x9d */ { "STA", 0x9d, 2, 5, 0, (void*) sta_absx },
|
||||
/* 0x9e */ { "???", 0x9e, 1, 2, 0, (void*) NULL },
|
||||
/* 0x9f */ { "???", 0x9f, 1, 2, 0, (void*) NULL },
|
||||
|
||||
/* 0xa0 */ { "LDY", 0xa0, 2, 2, (void*) ldy_imm },
|
||||
/* 0xa1 */ { "LDA", 0xa1, 2, 6, (void*) lda_indx },
|
||||
/* 0xa2 */ { "LDX", 0xa2, 2, 2, (void*) ldx_imm },
|
||||
/* 0xa3 */ { "???", 0xa3, 1, 2, (void*) NULL },
|
||||
/* 0xa4 */ { "LDY", 0xa4, 2, 3, (void*) ldy_zpg },
|
||||
/* 0xa5 */ { "LDA", 0xa5, 2, 3, (void*) lda_zpg },
|
||||
/* 0xa6 */ { "LDX", 0xa6, 2, 3, (void*) ldx_zpg },
|
||||
/* 0xa7 */ { "???", 0xa7, 1, 2, (void*) NULL },
|
||||
/* 0xa8 */ { "TAY", 0xa8, 1, 2, (void*) tay },
|
||||
/* 0xa9 */ { "LDA", 0xa9, 2, 2, (void*) lda_imm },
|
||||
/* 0xaa */ { "TAX", 0xaa, 1, 2, (void*) tax },
|
||||
/* 0xab */ { "???", 0xab, 1, 2, (void*) NULL },
|
||||
/* 0xac */ { "LDY", 0xac, 3, 4, (void*) ldy_abs },
|
||||
/* 0xad */ { "LDA", 0xad, 3, 4, (void*) lda_abs },
|
||||
/* 0xae */ { "LDX", 0xae, 3, 4, (void*) ldx_abs },
|
||||
/* 0xaf */ { "???", 0xaf, 1, 2, (void*) NULL },
|
||||
/* 0xb0 */ { "BCS", 0xb0, 2, 2, (void*) bcs },
|
||||
/* 0xb1 */ { "LDA", 0xb1, 2, 5, (void*) lda_indy },
|
||||
/* 0xb2 */ { "???", 0xb2, 1, 2, (void*) NULL },
|
||||
/* 0xb3 */ { "???", 0xb3, 1, 2, (void*) NULL },
|
||||
/* 0xb4 */ { "LDY", 0xb4, 2, 4, (void*) ldy_zpgx },
|
||||
/* 0xb5 */ { "LDA", 0xb5, 2, 4, (void*) lda_zpgx },
|
||||
/* 0xb6 */ { "LDX", 0xb6, 2, 4, (void*) ldx_zpgy },
|
||||
/* 0xb7 */ { "???", 0xb7, 1, 2, (void*) NULL },
|
||||
/* 0xb8 */ { "CLV", 0xb8, 1, 2, (void*) clv },
|
||||
/* 0xb9 */ { "LDA", 0xb9, 3, 4, (void*) lda_absy },
|
||||
/* 0xba */ { "TSX", 0xba, 1, 2, (void*) tsx },
|
||||
/* 0xbb */ { "???", 0xbb, 1, 2, (void*) NULL },
|
||||
/* 0xbc */ { "LDY", 0xbc, 3, 4, (void*) ldy_absx },
|
||||
/* 0xbd */ { "LDA", 0xbd, 3, 4, (void*) lda_absx },
|
||||
/* 0xbe */ { "LDX", 0xbe, 3, 4, (void*) ldx_absy },
|
||||
/* 0xbf */ { "???", 0xbf, 1, 2, (void*) NULL },
|
||||
/* 0xa0 */ { "LDY", 0xa0, 2, 2, 0, (void*) ldy_imm },
|
||||
/* 0xa1 */ { "LDA", 0xa1, 2, 6, 0, (void*) lda_indx },
|
||||
/* 0xa2 */ { "LDX", 0xa2, 2, 2, 0, (void*) ldx_imm },
|
||||
/* 0xa3 */ { "???", 0xa3, 1, 2, 0, (void*) NULL },
|
||||
/* 0xa4 */ { "LDY", 0xa4, 2, 3, 0, (void*) ldy_zpg },
|
||||
/* 0xa5 */ { "LDA", 0xa5, 2, 3, 0, (void*) lda_zpg },
|
||||
/* 0xa6 */ { "LDX", 0xa6, 2, 3, 0, (void*) ldx_zpg },
|
||||
/* 0xa7 */ { "???", 0xa7, 1, 2, 0, (void*) NULL },
|
||||
/* 0xa8 */ { "TAY", 0xa8, 1, 2, 0, (void*) tay },
|
||||
/* 0xa9 */ { "LDA", 0xa9, 2, 2, 0, (void*) lda_imm },
|
||||
/* 0xaa */ { "TAX", 0xaa, 1, 2, 0, (void*) tax },
|
||||
/* 0xab */ { "???", 0xab, 1, 2, 0, (void*) NULL },
|
||||
/* 0xac */ { "LDY", 0xac, 3, 4, 0, (void*) ldy_abs },
|
||||
/* 0xad */ { "LDA", 0xad, 3, 4, 0, (void*) lda_abs },
|
||||
/* 0xae */ { "LDX", 0xae, 3, 4, 0, (void*) ldx_abs },
|
||||
/* 0xaf */ { "???", 0xaf, 1, 2, 0, (void*) NULL },
|
||||
/* 0xb0 */ { "BCS", 0xb0, 2, 2, 0, (void*) bcs },
|
||||
/* 0xb1 */ { "LDA", 0xb1, 2, 5, 0, (void*) lda_indy },
|
||||
/* 0xb2 */ { "???", 0xb2, 1, 2, 0, (void*) NULL },
|
||||
/* 0xb3 */ { "???", 0xb3, 1, 2, 0, (void*) NULL },
|
||||
/* 0xb4 */ { "LDY", 0xb4, 2, 4, 0, (void*) ldy_zpgx },
|
||||
/* 0xb5 */ { "LDA", 0xb5, 2, 4, 0, (void*) lda_zpgx },
|
||||
/* 0xb6 */ { "LDX", 0xb6, 2, 4, 0, (void*) ldx_zpgy },
|
||||
/* 0xb7 */ { "???", 0xb7, 1, 2, 0, (void*) NULL },
|
||||
/* 0xb8 */ { "CLV", 0xb8, 1, 2, 0, (void*) clv },
|
||||
/* 0xb9 */ { "LDA", 0xb9, 3, 4, 0, (void*) lda_absy },
|
||||
/* 0xba */ { "TSX", 0xba, 1, 2, 0, (void*) tsx },
|
||||
/* 0xbb */ { "???", 0xbb, 1, 2, 0, (void*) NULL },
|
||||
/* 0xbc */ { "LDY", 0xbc, 3, 4, 0, (void*) ldy_absx },
|
||||
/* 0xbd */ { "LDA", 0xbd, 3, 4, 0, (void*) lda_absx },
|
||||
/* 0xbe */ { "LDX", 0xbe, 3, 4, 0, (void*) ldx_absy },
|
||||
/* 0xbf */ { "???", 0xbf, 1, 2, 0, (void*) NULL },
|
||||
|
||||
/* 0xc0 */ { "CPY", 0xc0, 2, 2, (void*) cpy_imm },
|
||||
/* 0xc1 */ { "CMP", 0xc1, 2, 6, (void*) cmp_indx },
|
||||
/* 0xc2 */ { "???", 0xc2, 1, 2, (void*) NULL },
|
||||
/* 0xc3 */ { "???", 0xc3, 1, 2, (void*) NULL },
|
||||
/* 0xc4 */ { "CPY", 0xc4, 2, 3, (void*) cpy_zpg },
|
||||
/* 0xc5 */ { "CMP", 0xc5, 2, 3, (void*) cmp_zpg },
|
||||
/* 0xc6 */ { "DEC", 0xc6, 2, 5, (void*) dec_zpg },
|
||||
/* 0xc7 */ { "???", 0xc7, 1, 2, (void*) NULL },
|
||||
/* 0xc8 */ { "INY", 0xc8, 1, 2, (void*) iny },
|
||||
/* 0xc9 */ { "CMP", 0xc9, 2, 2, (void*) cmp_imm },
|
||||
/* 0xca */ { "DEX", 0xca, 1, 2, (void*) dex },
|
||||
/* 0xcb */ { "???", 0xcb, 1, 2, (void*) NULL },
|
||||
/* 0xcc */ { "CPY", 0xcc, 3, 4, (void*) cpy_abs },
|
||||
/* 0xcd */ { "CMP", 0xcd, 3, 4, (void*) cmp_abs },
|
||||
/* 0xce */ { "DEC", 0xce, 3, 3, (void*) dec_abs },
|
||||
/* 0xcf */ { "???", 0xcf, 1, 2, (void*) NULL },
|
||||
/* 0xd0 */ { "BNE", 0xd0, 2, 2, (void*) bne },
|
||||
/* 0xd1 */ { "CMP", 0xd1, 2, 5, (void*) cmp_indy },
|
||||
/* 0xd2 */ { "???", 0xd2, 1, 2, (void*) NULL },
|
||||
/* 0xd3 */ { "???", 0xd3, 1, 2, (void*) NULL },
|
||||
/* 0xd4 */ { "???", 0xd4, 1, 2, (void*) NULL },
|
||||
/* 0xd5 */ { "CMP", 0xd5, 2, 4, (void*) cmp_zpgx },
|
||||
/* 0xd6 */ { "DEC", 0xd6, 2, 6, (void*) dec_zpgx },
|
||||
/* 0xd7 */ { "???", 0xd7, 1, 2, (void*) NULL },
|
||||
/* 0xd8 */ { "CLD", 0xd8, 1, 2, (void*) cld },
|
||||
/* 0xd9 */ { "CMP", 0xd9, 3, 4, (void*) cmp_absy },
|
||||
/* 0xda */ { "???", 0xda, 1, 2, (void*) NULL },
|
||||
/* 0xdb */ { "???", 0xdb, 1, 2, (void*) NULL },
|
||||
/* 0xdc */ { "???", 0xdc, 1, 2, (void*) NULL },
|
||||
/* 0xdd */ { "CMP", 0xdd, 3, 4, (void*) cmp_absx },
|
||||
/* 0xde */ { "DEC", 0xde, 3, 7, (void*) dec_absx },
|
||||
/* 0xdf */ { "???", 0xdf, 1, 2, (void*) NULL },
|
||||
/* 0xc0 */ { "CPY", 0xc0, 2, 2, 0, (void*) cpy_imm },
|
||||
/* 0xc1 */ { "CMP", 0xc1, 2, 6, 0, (void*) cmp_indx },
|
||||
/* 0xc2 */ { "???", 0xc2, 1, 2, 0, (void*) NULL },
|
||||
/* 0xc3 */ { "???", 0xc3, 1, 2, 0, (void*) NULL },
|
||||
/* 0xc4 */ { "CPY", 0xc4, 2, 3, 0, (void*) cpy_zpg },
|
||||
/* 0xc5 */ { "CMP", 0xc5, 2, 3, 0, (void*) cmp_zpg },
|
||||
/* 0xc6 */ { "DEC", 0xc6, 2, 5, 0, (void*) dec_zpg },
|
||||
/* 0xc7 */ { "???", 0xc7, 1, 2, 0, (void*) NULL },
|
||||
/* 0xc8 */ { "INY", 0xc8, 1, 2, 0, (void*) iny },
|
||||
/* 0xc9 */ { "CMP", 0xc9, 2, 2, 0, (void*) cmp_imm },
|
||||
/* 0xca */ { "DEX", 0xca, 1, 2, 0, (void*) dex },
|
||||
/* 0xcb */ { "???", 0xcb, 1, 2, 0, (void*) NULL },
|
||||
/* 0xcc */ { "CPY", 0xcc, 3, 4, 0, (void*) cpy_abs },
|
||||
/* 0xcd */ { "CMP", 0xcd, 3, 4, 0, (void*) cmp_abs },
|
||||
/* 0xce */ { "DEC", 0xce, 3, 3, 0, (void*) dec_abs },
|
||||
/* 0xcf */ { "???", 0xcf, 1, 2, 0, (void*) NULL },
|
||||
/* 0xd0 */ { "BNE", 0xd0, 2, 2, 0, (void*) bne },
|
||||
/* 0xd1 */ { "CMP", 0xd1, 2, 5, 0, (void*) cmp_indy },
|
||||
/* 0xd2 */ { "???", 0xd2, 1, 2, 0, (void*) NULL },
|
||||
/* 0xd3 */ { "???", 0xd3, 1, 2, 0, (void*) NULL },
|
||||
/* 0xd4 */ { "???", 0xd4, 1, 2, 0, (void*) NULL },
|
||||
/* 0xd5 */ { "CMP", 0xd5, 2, 4, 0, (void*) cmp_zpgx },
|
||||
/* 0xd6 */ { "DEC", 0xd6, 2, 6, 0, (void*) dec_zpgx },
|
||||
/* 0xd7 */ { "???", 0xd7, 1, 2, 0, (void*) NULL },
|
||||
/* 0xd8 */ { "CLD", 0xd8, 1, 2, 0, (void*) cld },
|
||||
/* 0xd9 */ { "CMP", 0xd9, 3, 4, 0, (void*) cmp_absy },
|
||||
/* 0xda */ { "???", 0xda, 1, 2, 0, (void*) NULL },
|
||||
/* 0xdb */ { "???", 0xdb, 1, 2, 0, (void*) NULL },
|
||||
/* 0xdc */ { "???", 0xdc, 1, 2, 0, (void*) NULL },
|
||||
/* 0xdd */ { "CMP", 0xdd, 3, 4, 0, (void*) cmp_absx },
|
||||
/* 0xde */ { "DEC", 0xde, 3, 7, 0, (void*) dec_absx },
|
||||
/* 0xdf */ { "???", 0xdf, 1, 2, 0, (void*) NULL },
|
||||
|
||||
/* 0xe0 */ { "CPX", 0xe0, 2, 2, (void*) cpx_imm },
|
||||
/* 0xe1 */ { "SBC", 0xe1, 2, 2, (void*) sbc_indx },
|
||||
/* 0xe2 */ { "???", 0xe2, 1, 2, (void*) NULL },
|
||||
/* 0xe3 */ { "???", 0xe3, 1, 2, (void*) NULL },
|
||||
/* 0xe4 */ { "CPX", 0xe4, 2, 3, (void*) cpx_zpg },
|
||||
/* 0xe5 */ { "SBC", 0xe5, 2, 2, (void*) sbc_zpg },
|
||||
/* 0xe6 */ { "INC", 0xe6, 2, 5, (void*) inc_zpg },
|
||||
/* 0xe7 */ { "???", 0xe7, 1, 2, (void*) NULL },
|
||||
/* 0xe8 */ { "INX", 0xe8, 1, 2, (void*) inx },
|
||||
/* 0xe9 */ { "SBC", 0xe9, 2, 2, (void*) sbc_imm },
|
||||
/* 0xea */ { "NOP", 0xea, 1, 2, (void*) nop },
|
||||
/* 0xeb */ { "???", 0xeb, 1, 2, (void*) NULL },
|
||||
/* 0xec */ { "CPX", 0xec, 3, 4, (void*) cpx_abs },
|
||||
/* 0xed */ { "SBC", 0xed, 3, 2, (void*) sbc_abs },
|
||||
/* 0xee */ { "INC", 0xee, 3, 6, (void*) inc_abs },
|
||||
/* 0xef */ { "???", 0xef, 1, 2, (void*) NULL },
|
||||
/* 0xf0 */ { "BEQ", 0xf0, 2, 2, (void*) beq },
|
||||
/* 0xf1 */ { "SBC", 0xf1, 1, 2, (void*) sbc_indy },
|
||||
/* 0xf2 */ { "???", 0xf2, 1, 2, (void*) NULL },
|
||||
/* 0xf3 */ { "???", 0xf3, 1, 2, (void*) NULL },
|
||||
/* 0xf4 */ { "???", 0xf4, 1, 2, (void*) NULL },
|
||||
/* 0xf5 */ { "SBC", 0xf5, 1, 2, (void*) sbc_zpgx },
|
||||
/* 0xf6 */ { "INC", 0xf6, 2, 6, (void*) inc_zpgx },
|
||||
/* 0xf7 */ { "???", 0xf7, 1, 2, (void*) NULL },
|
||||
/* 0xf8 */ { "SED", 0xf8, 1, 2, (void*) sed },
|
||||
/* 0xf9 */ { "SBC", 0xf9, 3, 2, (void*) sbc_absy },
|
||||
/* 0xfa */ { "???", 0xfa, 1, 2, (void*) NULL },
|
||||
/* 0xfb */ { "???", 0xfb, 1, 2, (void*) NULL },
|
||||
/* 0xfc */ { "???", 0xfc, 1, 2, (void*) NULL },
|
||||
/* 0xfd */ { "SBC", 0xfd, 3, 2, (void*) sbc_absx },
|
||||
/* 0xfe */ { "INC", 0xfe, 3, 7, (void*) inc_absx },
|
||||
/* 0xff */ { "???", 0xff, 1, 2, (void*) NULL }
|
||||
/* 0xe0 */ { "CPX", 0xe0, 2, 2, 0, (void*) cpx_imm },
|
||||
/* 0xe1 */ { "SBC", 0xe1, 2, 2, 0, (void*) sbc_indx },
|
||||
/* 0xe2 */ { "???", 0xe2, 1, 2, 0, (void*) NULL },
|
||||
/* 0xe3 */ { "???", 0xe3, 1, 2, 0, (void*) NULL },
|
||||
/* 0xe4 */ { "CPX", 0xe4, 2, 3, 0, (void*) cpx_zpg },
|
||||
/* 0xe5 */ { "SBC", 0xe5, 2, 2, 0, (void*) sbc_zpg },
|
||||
/* 0xe6 */ { "INC", 0xe6, 2, 5, 0, (void*) inc_zpg },
|
||||
/* 0xe7 */ { "???", 0xe7, 1, 2, 0, (void*) NULL },
|
||||
/* 0xe8 */ { "INX", 0xe8, 1, 2, 0, (void*) inx },
|
||||
/* 0xe9 */ { "SBC", 0xe9, 2, 2, 0, (void*) sbc_imm },
|
||||
/* 0xea */ { "NOP", 0xea, 1, 2, 0, (void*) nop },
|
||||
/* 0xeb */ { "???", 0xeb, 1, 2, 0, (void*) NULL },
|
||||
/* 0xec */ { "CPX", 0xec, 3, 4, 0, (void*) cpx_abs },
|
||||
/* 0xed */ { "SBC", 0xed, 3, 2, 0, (void*) sbc_abs },
|
||||
/* 0xee */ { "INC", 0xee, 3, 6, 0, (void*) inc_abs },
|
||||
/* 0xef */ { "???", 0xef, 1, 2, 0, (void*) NULL },
|
||||
/* 0xf0 */ { "BEQ", 0xf0, 2, 2, 0, (void*) beq },
|
||||
/* 0xf1 */ { "SBC", 0xf1, 1, 2, 0, (void*) sbc_indy },
|
||||
/* 0xf2 */ { "???", 0xf2, 1, 2, 0, (void*) NULL },
|
||||
/* 0xf3 */ { "???", 0xf3, 1, 2, 0, (void*) NULL },
|
||||
/* 0xf4 */ { "???", 0xf4, 1, 2, 0, (void*) NULL },
|
||||
/* 0xf5 */ { "SBC", 0xf5, 1, 2, 0, (void*) sbc_zpgx },
|
||||
/* 0xf6 */ { "INC", 0xf6, 2, 6, 0, (void*) inc_zpgx },
|
||||
/* 0xf7 */ { "???", 0xf7, 1, 2, 0, (void*) NULL },
|
||||
/* 0xf8 */ { "SED", 0xf8, 1, 2, 0, (void*) sed },
|
||||
/* 0xf9 */ { "SBC", 0xf9, 3, 2, 0, (void*) sbc_absy },
|
||||
/* 0xfa */ { "???", 0xfa, 1, 2, 0, (void*) NULL },
|
||||
/* 0xfb */ { "???", 0xfb, 1, 2, 0, (void*) NULL },
|
||||
/* 0xfc */ { "???", 0xfc, 1, 2, 0, (void*) NULL },
|
||||
/* 0xfd */ { "SBC", 0xfd, 3, 2, 0, (void*) sbc_absx },
|
||||
/* 0xfe */ { "INC", 0xfe, 3, 7, 0, (void*) inc_absx },
|
||||
/* 0xff */ { "???", 0xff, 1, 2, 0, (void*) NULL }
|
||||
};
|
||||
|
|
|
|||
1
ins.h
1
ins.h
|
|
@ -30,6 +30,7 @@ typedef struct {
|
|||
uint8_t opcode;
|
||||
uint8_t bytes;
|
||||
uint8_t cycles;
|
||||
int8_t stack; // How much stack does this instruction need. Negative means pull, positive push
|
||||
void *handler;
|
||||
} cpu_instruction_t;
|
||||
|
||||
|
|
|
|||
18
mem.c
18
mem.c
|
|
@ -37,12 +37,19 @@ uint8_t mem_get_byte(struct cpu_t *cpu, uint16_t addr) {
|
|||
if (mem->read_handler) {
|
||||
return ((mem_read_handler_t) mem->read_handler)((struct cpu_t*) cpu, mem, addr);
|
||||
} else {
|
||||
// TODO What to do?
|
||||
if (cpu->strict) {
|
||||
// TODO: Signal an error about reading to write-only region (does that even exist?)
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
mem = mem->next;
|
||||
}
|
||||
|
||||
if (cpu->strict) {
|
||||
// TODO: Signal an error about reading non-existent memory
|
||||
}
|
||||
|
||||
return 0; // TODO What should the default be if we read from non-existent memory?
|
||||
}
|
||||
|
||||
|
|
@ -53,13 +60,18 @@ void mem_set_byte(struct cpu_t *cpu, uint16_t addr, uint8_t v) {
|
|||
if (mem->write_handler) {
|
||||
((mem_write_handler_t) mem->write_handler)((struct cpu_t*) cpu, mem, addr, v);
|
||||
} else {
|
||||
// TODO What to do?
|
||||
if (cpu->strict) {
|
||||
// TODO: Signal an error about writing to read-only region
|
||||
}
|
||||
}
|
||||
return;
|
||||
}
|
||||
mem = mem->next;
|
||||
}
|
||||
// TODO What should the default be if we read from non-existent memory?
|
||||
|
||||
if (cpu->strict) {
|
||||
// TODO: Signal an error about writing non-existent memory
|
||||
}
|
||||
}
|
||||
|
||||
// Getters
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user