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erc-c/tests/mos6502.bits.c
Peter Evans 96b2542ea6 CARRY should be set if oper > 0
This error became apparent once we added the missing modify_status
function to some instructions.
2017-12-09 14:47:49 -06:00

112 lines
2.4 KiB
C

#include <criterion/criterion.h>
#include "mos6502.h"
#include "mos6502.enums.h"
#include "mos6502.tests.h"
TestSuite(mos6502_bits, .init = setup, .fini = teardown);
Test(mos6502_bits, and)
{
cpu->A = 5;
mos6502_handle_and(cpu, 1);
cr_assert_eq(cpu->A, 1);
cpu->A = 5;
mos6502_handle_and(cpu, 4);
cr_assert_eq(cpu->A, 4);
}
Test(mos6502_bits, asl)
{
mos6502_handle_asl(cpu, 5);
cr_assert_eq(cpu->A, 10);
cpu->last_addr = 123;
mos6502_handle_asl(cpu, 22);
cr_assert_eq(vm_segment_get(cpu->memory, 123), 44);
}
Test(mos6502_bits, bit)
{
cpu->A = 5;
mos6502_handle_bit(cpu, 129);
cr_assert_eq(cpu->P & NEGATIVE, NEGATIVE);
cr_assert_eq(cpu->P & OVERFLOW, 0);
cr_assert_eq(cpu->P & ZERO, 0);
mos6502_handle_bit(cpu, 193);
cr_assert_eq(cpu->P & NEGATIVE, NEGATIVE);
cr_assert_eq(cpu->P & OVERFLOW, OVERFLOW);
cr_assert_eq(cpu->P & ZERO, 0);
mos6502_handle_bit(cpu, 65);
cr_assert_eq(cpu->P & NEGATIVE, 0);
cr_assert_eq(cpu->P & OVERFLOW, OVERFLOW);
cr_assert_eq(cpu->P & ZERO, 0);
mos6502_handle_bit(cpu, 33);
cr_assert_eq(cpu->P & NEGATIVE, 0);
cr_assert_eq(cpu->P & OVERFLOW, 0);
cr_assert_eq(cpu->P & ZERO, 0);
mos6502_handle_bit(cpu, 0);
cr_assert_eq(cpu->P & NEGATIVE, 0);
cr_assert_eq(cpu->P & OVERFLOW, 0);
cr_assert_eq(cpu->P & ZERO, ZERO);
}
Test(mos6502_bits, eor)
{
cpu->A = 5;
mos6502_handle_eor(cpu, 4);
cr_assert_eq(cpu->A, 1);
cpu->A = 5;
mos6502_handle_eor(cpu, 1);
cr_assert_eq(cpu->A, 4);
}
Test(mos6502_bits, lsr)
{
mos6502_handle_lsr(cpu, 5);
cr_assert_eq(cpu->A, 2);
cr_assert_eq(cpu->P & CARRY, CARRY);
cpu->last_addr = 123;
mos6502_handle_lsr(cpu, 22);
cr_assert_eq(vm_segment_get(cpu->memory, 123), 11);
cr_assert_eq(cpu->P & CARRY, CARRY);
}
Test(mos6502_bits, ora)
{
cpu->A = 5;
mos6502_handle_ora(cpu, 4);
cr_assert_eq(cpu->A, 5);
cpu->A = 5;
mos6502_handle_ora(cpu, 10);
cr_assert_eq(cpu->A, 15);
}
Test(mos6502_bits, rol)
{
mos6502_handle_rol(cpu, 8);
cr_assert_eq(cpu->A, 16);
cpu->last_addr = 234;
mos6502_handle_rol(cpu, 128);
cr_assert_eq(vm_segment_get(cpu->memory, 234), 1);
}
Test(mos6502_bits, ror)
{
mos6502_handle_ror(cpu, 64);
cr_assert_eq(cpu->A, 32);
cpu->last_addr = 123;
mos6502_handle_ror(cpu, 1);
cr_assert_eq(vm_segment_get(cpu->memory, 123), 128);
}