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https://github.com/andwati/mos-6502.git
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andwati
0dcd2ed687
- Added `state.c` to handle saving and loading the state of the CPU and Bus. - Implemented CRC32 checksum for data integrity verification during state operations. - Enhanced `README.md` in tests/roms to document new test commands for decimal, interrupt, Apple I, and nestest. - Created new test files: `run_apple1.c`, `run_decimal.c`, `run_interrupt.c`, `run_nestest.c`, and `run_vectors.c` to validate the new features. - Updated `run_tests.c` to include tests for state saving/loading and other functionalities. - Introduced `test_vectors.py` to facilitate downloading and running JSON test vectors for opcode verification.
31 lines
1.6 KiB
C
31 lines
1.6 KiB
C
#include <stdio.h>
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#include "bus.h"
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#include "cpu.h"
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#include "loader.h"
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int main(int argc,char **argv)
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{
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Bus6502 bus;CPU6502 cpu;size_t loaded;const unsigned long limit=200000000;
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if(argc!=2){fprintf(stderr,"usage: %s 6502_decimal_test.bin\n",argv[0]);return 2;}
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bus_init(&bus);
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if(load_binary(&bus,argv[1],0x0200,&loaded)){fprintf(stderr,"failed to load %s\n",argv[1]);return 1;}
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bus_write16(&bus,0xFFFC,0x0200);cpu_reset(&cpu,&bus);
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for(unsigned long i=0;i<limit;i++){
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uint16_t pc=cpu.PC;
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if(bus.memory.data[pc]==0xDB){
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if(bus.memory.data[0x000B]==0){printf("decimal success after %lu instructions (%zu-byte ROM)\n",i,loaded);return 0;}
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fprintf(stderr,"decimal failure at stop marker, ERROR=$%02X\n",bus.memory.data[0x000B]);return 1;
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}
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cpu_step_result_t r=cpu_step(&cpu,&bus);
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if(r.status==CPU_STEP_ILLEGAL_OPCODE){
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if(r.opcode==0xDB&&bus.memory.data[0x000B]==0){printf("decimal success after %lu instructions (%zu-byte ROM)\n",i,loaded);return 0;}
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fprintf(stderr,"decimal failure: opcode $%02X at $%04X, ERROR=$%02X N1=$%02X N2=$%02X "
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"DA=$%02X flags=$%02X expectedA=$%02X N=$%02X V=$%02X Z=$%02X C=$%02X\n",
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r.opcode,pc,bus.memory.data[0x000B],bus.memory.data[0],bus.memory.data[1],
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bus.memory.data[4],bus.memory.data[5],bus.memory.data[6],bus.memory.data[7],
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bus.memory.data[8],bus.memory.data[9],bus.memory.data[10]);return 1;
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}
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}
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fprintf(stderr,"decimal test instruction limit reached at $%04X\n",cpu.PC);return 1;
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}
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