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Fixes #8 - Remove all magic numbers

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This commit is contained in:
Stefan Arentz 2016-11-14 21:13:51 -05:00
parent 670ed8b041
commit f131038f70
3 changed files with 7 additions and 3 deletions
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6
cpu.c
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@ -382,7 +382,7 @@ void cpu_trace(struct cpu_t *cpu, uint8_t trace) {
}
void cpu_reset(struct cpu_t *cpu) {
cpu->state.pc = mem_get_word(cpu, 0xfffc);
cpu->state.pc = mem_get_word(cpu, EWM_VECTOR_RES);
fprintf(stderr, "CPU: cpu->state.pc = %.4x\n", cpu->state.pc);
cpu->state.a = 0x00;
cpu->state.x = 0x00;
@ -401,14 +401,14 @@ void cpu_irq(struct cpu_t *cpu) {
_cpu_push_word(cpu, cpu->state.pc);
_cpu_push_byte(cpu, _cpu_get_status(cpu));
cpu->state.i = 1;
cpu->state.pc = mem_get_word(cpu, 0xfffe);
cpu->state.pc = mem_get_word(cpu, EWM_VECTOR_IRQ);
}
void cpu_nmi(struct cpu_t *cpu) {
_cpu_push_word(cpu, cpu->state.pc);
_cpu_push_byte(cpu, _cpu_get_status(cpu));
cpu->state.i = 1;
cpu->state.pc = mem_get_word(cpu, 0xfffa);
cpu->state.pc = mem_get_word(cpu, EWM_VECTOR_NMI);
}
void cpu_run(struct cpu_t *cpu) {

4
cpu.h
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@ -25,6 +25,10 @@
#include <stdint.h>
#define EWM_VECTOR_NMI 0xfffa
#define EWM_VECTOR_RES 0xfffc
#define EWM_VECTOR_IRQ 0xfffe
struct cpu_state_t {
uint8_t a, x, y, s, sp;
uint16_t pc;

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cpu.o Normal file
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