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https://github.com/pevans/erc-c.git
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54473be302
This also adds a new table for cycles, and adds unit test functions for the work as well.
124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
#include <criterion/criterion.h>
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#include "mos6502.h"
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#include "mos6502.enums.h"
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Test(mos6502, create) {
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mos6502 *cpu;
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cpu = mos6502_create();
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cr_assert_neq(cpu, NULL);
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cr_assert_eq(cpu->memory->size, MOS6502_MEMSIZE);
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cr_assert_eq(cpu->PC, 0);
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cr_assert_eq(cpu->A, 0);
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cr_assert_eq(cpu->X, 0);
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cr_assert_eq(cpu->Y, 0);
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cr_assert_eq(cpu->P, 0);
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cr_assert_eq(cpu->S, 0);
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mos6502_free(cpu);
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}
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Test(mos6502, next_byte) {
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INIT_ADDR_MODE();
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cpu->PC = 128;
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vm_segment_set(cpu->memory, cpu->PC, 123);
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vm_segment_set(cpu->memory, cpu->PC + 1, 234);
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vm_segment_set(cpu->memory, cpu->PC + 2, 12);
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cr_assert_eq(mos6502_next_byte(cpu), 123);
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cr_assert_eq(mos6502_next_byte(cpu), 234);
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cr_assert_eq(mos6502_next_byte(cpu), 12);
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END_ADDR_MODE();
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}
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Test(mos6502, push_stack)
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{
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START_CPU_TEST(mos6502);
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mos6502_push_stack(cpu, 0x1234);
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cr_assert_eq(vm_segment_get(cpu->memory, 0x0100), 0x12);
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cr_assert_eq(vm_segment_get(cpu->memory, 0x0101), 0x34);
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END_CPU_TEST(mos6502);
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}
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Test(mos6502, pop_stack)
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{
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START_CPU_TEST(mos6502);
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mos6502_push_stack(cpu, 0x1234);
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cr_assert_eq(mos6502_pop_stack(cpu), 0x1234);
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END_CPU_TEST(mos6502);
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}
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Test(mos6502, modify_status)
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{
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START_CPU_TEST(mos6502);
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mos6502_modify_status(cpu, NEGATIVE, 130);
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cr_assert_eq(cpu->P & NEGATIVE, NEGATIVE);
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mos6502_modify_status(cpu, NEGATIVE, 123);
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cr_assert_neq(cpu->P & NEGATIVE, NEGATIVE);
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mos6502_modify_status(cpu, OVERFLOW, 123);
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cr_assert_eq(cpu->P & OVERFLOW, OVERFLOW);
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mos6502_modify_status(cpu, OVERFLOW, 44);
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cr_assert_neq(cpu->P & OVERFLOW, OVERFLOW);
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mos6502_modify_status(cpu, CARRY, 23);
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cr_assert_eq(cpu->P & CARRY, CARRY);
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mos6502_modify_status(cpu, CARRY, 0);
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cr_assert_neq(cpu->P & CARRY, CARRY);
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mos6502_modify_status(cpu, ZERO, 0);
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cr_assert_eq(cpu->P & ZERO, ZERO);
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mos6502_modify_status(cpu, ZERO, 1);
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cr_assert_neq(cpu->P & ZERO, ZERO);
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END_CPU_TEST(mos6502);
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}
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Test(mos6502, set_status)
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{
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START_CPU_TEST(mos6502);
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mos6502_set_status(cpu, BREAK | INTERRUPT | DECIMAL);
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cr_assert_eq(cpu->P & (BREAK | INTERRUPT | DECIMAL), BREAK | INTERRUPT | DECIMAL);
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END_CPU_TEST(mos6502);
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}
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Test(mos6502, instruction)
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{
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cr_assert_eq(mos6502_instruction(0x1D), ORA);
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cr_assert_eq(mos6502_instruction(0xD8), CLD);
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cr_assert_eq(mos6502_instruction(0x98), TYA);
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}
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Test(mos6502, cycles)
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{
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START_CPU_TEST(mos6502);
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cr_assert_eq(mos6502_cycles(cpu, 0x76), 6);
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cr_assert_eq(mos6502_cycles(cpu, 0xBA), 2);
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// In this case, we aren't cross a page boundary, and the number of
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// cycles should stay at 4
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cpu->last_addr = 0x5070;
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cpu->X = 23;
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cr_assert_eq(mos6502_cycles(cpu, 0x1D), 4);
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// Testing that crossing a page boundary adds one to the number of
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// cycles
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cpu->X = 200;
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cr_assert_eq(mos6502_cycles(cpu, 0x1D), 5);
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END_CPU_TEST(mos6502);
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}
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