Apple-2-Tools/ewm
1
0
Fork 0
mirror of https://github.com/st3fan/ewm.git synced 2025-04-05 00:29:29 +00:00
Code Issues Projects Releases Wiki Activity

Fixes #8 - Remove all magic numbers

Browse Source
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
cpu.c
View File

@ -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
View File

@ -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;

BIN
cpu.o Normal file
View File

Binary file not shown.