arduino-appleii/6502tests/test/testLsr.c
Damian Peckett 2798ae6d16 First Commit
Uploading Current Source To Github
2015-04-08 17:14:01 +10:00

103 lines
2.0 KiB
C

int testLsrImplied() {
SR &= (~SR_DEC);
SR &= (~SR_NEG);
//zero
SR |= SR_CARRY;
A = 0x01;
ram[0] = 0x4A;
instructions = 1; run();
if(!(A == 0x00 && SR&SR_ZERO && SR&SR_CARRY && !(SR&SR_NEG))) return -1;
//carry out
A = 0x80;
ram[0] = 0x4A;
instructions = 1; run();
if(!(A == 0x40 && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_NEG))) return -2;
return 0;
}
int testLsrZeropage() {
//zero
SR |= SR_CARRY;
ram[0] = 0x46;
ram[1] = 0x02;
ram[2] = 0x01;
instructions = 1; run();
if(!(ram[2] == 0x00 && SR&SR_ZERO && SR&SR_CARRY && !(SR&SR_NEG))) return -1;
//carry out
ram[0] = 0x46;
ram[1] = 0x02;
ram[2] = 0x80;
instructions = 1; run();
if(!(ram[2] == 0x40 && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_NEG))) return -2;
return 0;
}
int testLsrZeropageX() {
X = 0x01; Y = 0x00;
//zero
SR |= SR_CARRY;
ram[0] = 0x56;
ram[1] = 0x01;
ram[2] = 0x01;
instructions = 1; run();
if(!(ram[2] == 0x00 && SR&SR_ZERO && SR&SR_CARRY && !(SR&SR_NEG))) return -1;
//carry out
ram[0] = 0x56;
ram[1] = 0x01;
ram[2] = 0x80;
instructions = 1; run();
if(!(ram[2] == 0x40 && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_NEG))) return -2;
return 0;
}
int testLsrAbsolute() {
//zero
SR |= SR_CARRY;
ram[0] = 0x4E;
ram[1] = 0x03;
ram[2] = 0x00;
ram[3] = 0x01;
instructions = 1; run();
if(!(ram[3] == 0x00 && SR&SR_ZERO && SR&SR_CARRY && !(SR&SR_NEG))) return -1;
//carry out
ram[0] = 0x4E;
ram[1] = 0x03;
ram[2] = 0x00;
ram[3] = 0x80;
instructions = 1; run();
if(!(ram[3] == 0x40 && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_NEG))) return -2;
return 0;
}
int testLsrAbsoluteX() {
X = 0x01; Y = 0x00;
//zero
SR |= SR_CARRY;
ram[0] = 0x5E;
ram[1] = 0x02;
ram[2] = 0x00;
ram[3] = 0x01;
instructions = 1; run();
if(!(ram[3] == 0x00 && SR&SR_ZERO && SR&SR_CARRY && !(SR&SR_NEG))) return -1;
//carry out
ram[0] = 0x5E;
ram[1] = 0x02;
ram[2] = 0x00;
ram[3] = 0x80;
instructions = 1; run();
if(!(ram[3] == 0x40 && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_NEG))) return -2;
return 0;
}