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a8bba409c3
As the Apple II (or rather the 6502 chip) is little-endian, meaning the least significant byte is the first byte you read going forward, rather than the last byte.
144 lines
3.3 KiB
C
144 lines
3.3 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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#include "mos6502.tests.h"
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TestSuite(mos6502_addr, .init = setup, .fini = teardown);
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Test(mos6502_addr, mode)
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{
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cr_assert_eq(mos6502_addr_mode(0xEA), IMP);
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cr_assert_eq(mos6502_addr_mode(0xD6), ZPX);
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cr_assert_eq(mos6502_addr_mode(0xF0), REL);
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}
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Test(mos6502_addr, addr_mode_acc)
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{
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cpu->A = 123;
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cr_assert_eq(mos6502_resolve_acc(cpu), 123);
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}
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Test(mos6502_addr, addr_mode_abs)
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{
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vm_segment_set(cpu->memory, 0x1234, 111);
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SET_PC_BYTE(cpu, 0, 0x34);
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SET_PC_BYTE(cpu, 1, 0x12);
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cr_assert_eq(mos6502_resolve_abs(cpu), 111);
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}
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Test(mos6502_addr, addr_mode_abx_carry0)
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{
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vm_segment_set(cpu->memory, 0x1234, 111);
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SET_PC_BYTE(cpu, 0, 0x30);
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SET_PC_BYTE(cpu, 1, 0x12);
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cpu->X = 4;
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cr_assert_eq(mos6502_resolve_abx(cpu), 111);
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}
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Test(mos6502_addr, addr_mode_abx_carry1)
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{
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vm_segment_set(cpu->memory, 0x1234, 111);
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SET_PC_BYTE(cpu, 0, 0x30);
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SET_PC_BYTE(cpu, 1, 0x12);
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cpu->X = 3;
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cpu->P = cpu->P | MOS_CARRY;
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cr_assert_eq(mos6502_resolve_abx(cpu), 111);
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}
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Test(mos6502_addr, addr_mode_aby_carry0)
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{
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vm_segment_set(cpu->memory, 0x1234, 111);
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SET_PC_BYTE(cpu, 0, 0x30);
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SET_PC_BYTE(cpu, 1, 0x12);
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cpu->Y = 4;
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cr_assert_eq(mos6502_resolve_aby(cpu), 111);
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}
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Test(mos6502_addr, addr_mode_aby_carry1)
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{
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vm_segment_set(cpu->memory, 0x1234, 111);
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SET_PC_BYTE(cpu, 0, 0x30);
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SET_PC_BYTE(cpu, 1, 0x12);
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cpu->Y = 3;
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cpu->P = cpu->P | MOS_CARRY;
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cr_assert_eq(mos6502_resolve_aby(cpu), 111);
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}
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Test(mos6502_addr, addr_mode_imm)
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{
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SET_PC_BYTE(cpu, 0, 0x12);
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cr_assert_eq(mos6502_resolve_imm(cpu), 0x12);
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}
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Test(mos6502_addr, addr_mode_idx)
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{
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vm_segment_set(cpu->memory, 0x17, 0x23);
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vm_segment_set(cpu->memory, 0x23, 123);
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SET_PC_BYTE(cpu, 0, 0x12);
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cpu->X = 5;
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cr_assert_eq(mos6502_resolve_idx(cpu), 123);
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}
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Test(mos6502_addr, addr_mode_idy)
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{
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vm_segment_set(cpu->memory, 0x12, 0x23);
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vm_segment_set(cpu->memory, 0x28, 123);
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SET_PC_BYTE(cpu, 0, 0x12);
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cpu->Y = 5;
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cr_assert_eq(mos6502_resolve_idy(cpu), 123);
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}
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Test(mos6502_addr, addr_mode_ind)
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{
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vm_segment_set(cpu->memory, 0x1234, 0x45);
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vm_segment_set(cpu->memory, 0x1235, 0x23);
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vm_segment_set(cpu->memory, 0x2345, 123);
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SET_PC_BYTE(cpu, 0, 0x34);
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SET_PC_BYTE(cpu, 1, 0x12);
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cr_assert_eq(mos6502_resolve_ind(cpu), 123);
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}
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Test(mos6502_addr, addr_mode_rel_positive)
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{
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cpu->PC = 123;
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SET_PC_BYTE(cpu, 0, 88);
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cr_assert_eq(mos6502_resolve_rel(cpu), 0);
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cr_assert_eq(cpu->last_addr, 211);
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}
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Test(mos6502_addr, addr_mode_rel_negative)
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{
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cpu->PC = 123;
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SET_PC_BYTE(cpu, 0, 216);
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cr_assert_eq(mos6502_resolve_rel(cpu), 0);
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cr_assert_eq(cpu->last_addr, 34);
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}
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Test(mos6502_addr, addr_mode_zpg)
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{
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vm_segment_set(cpu->memory, 0x0034, 222);
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SET_PC_BYTE(cpu, 0, 0x34);
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cr_assert_eq(mos6502_resolve_zpg(cpu), 222);
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}
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Test(mos6502_addr, addr_mode_zpx)
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{
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vm_segment_set(cpu->memory, 0x0034, 222);
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SET_PC_BYTE(cpu, 0, 0x30);
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cpu->X = 4;
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cr_assert_eq(mos6502_resolve_zpx(cpu), 222);
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}
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Test(mos6502_addr, addr_mode_zpy)
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{
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vm_segment_set(cpu->memory, 0x0034, 222);
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SET_PC_BYTE(cpu, 0, 0x2F);
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cpu->Y = 5;
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cr_assert_eq(mos6502_resolve_zpy(cpu), 222);
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}
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