arduino-appleii/6502tests/test/testTransfer.c

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int testTaxImplied() {
//normal
X = 0; A = 0x23;
ram[0] = 0xAA;
instructions = 1; run();
if(!(X == 0x23 && !(SR&SR_NEG) && !(SR&SR_ZERO)))return -1;
//negative
X = 0; A = 0xFE;
ram[0] = 0xAA;
instructions = 1; run();
if(!(X == 0xFE && SR&SR_NEG && !(SR&SR_ZERO)))return -2;
return 0;
}
int testTayImplied() {
//normal
Y = 0; A = 0x23;
ram[0] = 0xA8;
instructions = 1; run();
if(!(Y == 0x23 && !(SR&SR_NEG) && !(SR&SR_ZERO)))return -1;
//negative
Y = 0; A = 0xFE;
ram[0] = 0xA8;
instructions = 1; run();
if(!(Y == 0xFE && SR&SR_NEG && !(SR&SR_ZERO)))return -2;
return 0;
}
int testTsxImplied() {
//normal
X = 0; SP = 0x23;
ram[0] = 0xBA;
instructions = 1; run();
if(!(X == 0x23 && !(SR&SR_NEG) && !(SR&SR_ZERO)))return -1;
//negative
X = 0; SP = 0xFE;
ram[0] = 0xBA;
instructions = 1; run();
if(!(X == 0xFE && SR&SR_NEG && !(SR&SR_ZERO)))return -2;
return 0;
}
int testTxaImplied() {
//normal
A = 0; X = 0x23;
ram[0] = 0x8A;
instructions = 1; run();
if(!(A == 0x23 && !(SR&SR_NEG) && !(SR&SR_ZERO)))return -1;
//negative
A = 0; X = 0xFE;
ram[0] = 0x8A;
instructions = 1; run();
if(!(A == 0xFE && SR&SR_NEG && !(SR&SR_ZERO)))return -2;
return 0;
}
int testTxsImplied() {
//normal
SR = SR_FIXED_BITS;
X = 0x00; SP = 0x00;
ram[0] = 0x9A;
instructions = 1; run();
if(!(SP == 0x23 && !(SR&SR_ZERO)))return -1;
return 0;
}
int testTyaImplied() {
//normal
A = 0; Y = 0x23;
ram[0] = 0x98;
instructions = 1; run();
if(!(A == 0x23 && !(SR&SR_NEG) && !(SR&SR_ZERO)))return -1;
//negative
A = 0; Y = 0xFE;
ram[0] = 0x98;
instructions = 1; run();
if(!(A == 0xFE && SR&SR_NEG && !(SR&SR_ZERO)))return -2;
return 0;
}