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improved SBC tests (still failing) and compared the expected results with another emulator

This commit is contained in:
jborza 2019-04-26 11:53:10 +02:00
parent bce63b3ae2
commit 0d932b7f61
1 changed files with 13 additions and 9 deletions
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22
test6502.c
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@ -44,7 +44,7 @@ void test_step(State6502 * state) {
print_all(state);
}
void test_step_until_break(State6502* state) {
void test_step_until_break(State6502 * state) {
do {
print_all(state);
disassemble_6502(state->memory, state->pc);
@ -2059,6 +2059,7 @@ void test_SBC_IMM_carry() {
}
void test_SBC_IMM_(byte a, byte c, byte operand, byte expected_a, byte expected_n, byte expected_z, byte expected_c, byte expected_v) {
printf("~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
State6502 state = create_blank_state();
state.a = a;
state.flags.c = c;
@ -2084,13 +2085,13 @@ void test_SBC_IMM_multiple() {
test_SBC_IMM_(0x04, 0, /* OP */ 0x06, /*A*/ 0xFD, /*N*/ 1, /*Z*/ 0, /*C*/ 1, /*V*/ 0); //borrow from carry bit - 4 + 256 - 6 = 254
//source: http://www.righto.com/2012/12/the-6502-overflow-flag-explained.html
//C7 - carry, B - Borrow, S7 - N, V - V
test_SBC_IMM_(0x50, 0, /* OP */ 0xF0, /*A*/ 0x60, /*N*/ 0, /*Z*/ 0, /*C*/ 0, /*V*/ 0); //Unsigned borrow but no signed overflow
test_SBC_IMM_(0x50, 1, /* OP */ 0xB0, /*A*/ 0x60, /*N*/ 0, /*Z*/ 0, /*C*/ 0, /*V*/ 1); //Unsigned borrow and signed overflow
test_SBC_IMM_(0x50, 0, /* OP */ 0x70, /*A*/ 0xE0, /*N*/ 1, /*Z*/ 0, /*C*/ 0, /*V*/ 0); //Unsigned borrow but no signed overflow
test_SBC_IMM_(0x50, 1, /* OP */ 0xF0, /*A*/ 0x60, /*N*/ 0, /*Z*/ 0, /*C*/ 0, /*V*/ 0); //Unsigned borrow but no signed overflow
test_SBC_IMM_(0x50, 1, /* OP */ 0xB0, /*A*/ 0xA0, /*N*/ 1, /*Z*/ 0, /*C*/ 0, /*V*/ 1); //Unsigned borrow and signed overflow
test_SBC_IMM_(0x50, 1, /* OP */ 0x70, /*A*/ 0xE0, /*N*/ 1, /*Z*/ 0, /*C*/ 0, /*V*/ 0); //Unsigned borrow but no signed overflow
test_SBC_IMM_(0x50, 1, /* OP */ 0x30, /*A*/ 0x20, /*N*/ 0, /*Z*/ 0, /*C*/ 1, /*V*/ 0); //No unsigned borrow or signed overflow
test_SBC_IMM_(0xD0, 0, /* OP */ 0xF0, /*A*/ 0xE0, /*N*/ 1, /*Z*/ 0, /*C*/ 0, /*V*/ 0); //Unsigned borrow but no signed overflow
test_SBC_IMM_(0xD0, 1, /* OP */ 0xF0, /*A*/ 0xE0, /*N*/ 1, /*Z*/ 0, /*C*/ 0, /*V*/ 0); //Unsigned borrow but no signed overflow
test_SBC_IMM_(0xD0, 1, /* OP */ 0xB0, /*A*/ 0x20, /*N*/ 0, /*Z*/ 0, /*C*/ 1, /*V*/ 0); //No unsigned borrow or signed overflow
test_SBC_IMM_(0xD0, 0, /* OP */ 0x70, /*A*/ 0x60, /*N*/ 0, /*Z*/ 0, /*C*/ 1, /*V*/ 1); //No unsigned borrow but signed overflow
test_SBC_IMM_(0xD0, 1, /* OP */ 0x70, /*A*/ 0x60, /*N*/ 0, /*Z*/ 0, /*C*/ 1, /*V*/ 1); //No unsigned borrow but signed overflow
test_SBC_IMM_(0xD0, 1, /* OP */ 0x30, /*A*/ 0xA0, /*N*/ 1, /*Z*/ 0, /*C*/ 1, /*V*/ 0); //No unsigned borrow or signed overflow
}
@ -2150,7 +2151,7 @@ void test_BIT_multiple() {
// JSR and RTS
void test_JSR() {
State6502 state = create_blank_state();
char program[] = { NOP, JSR_ABS, 0x23, 0x01};
char program[] = { NOP, JSR_ABS, 0x23, 0x01 };
memcpy(state.memory, program, sizeof(program));
//act
test_step(&state);
@ -2179,7 +2180,7 @@ void test_RTS() {
void test_JSR_RTS() {
State6502 state = create_blank_state();
char program[] = { JSR_ABS, 0x06, 0x00, LDA_IMM, 0xAA, BRK, LDX_IMM, 0xBB, RTS};
char program[] = { JSR_ABS, 0x06, 0x00, LDA_IMM, 0xAA, BRK, LDX_IMM, 0xBB, RTS };
memcpy(state.memory, program, sizeof(program));
//act
test_step_until_break(&state);
@ -2232,13 +2233,16 @@ fp* tests_brk[] = { test_BRK };
void run_suite(fp * *suite, int size) {
for (int i = 0; i < size; i++)
{
printf("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
suite[i]();
}
}
void run_tests() {
RUN(tests_sbc);
RUN(tests_brk);
RUN(tests_jsr_rts);
RUN(tests_sbc);
RUN(tests_bit);
RUN(tests_adc);
RUN(tests_lda);