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

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5.9 KiB
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int testSbcImmediate() {
SR &= (~SR_DEC);
//no overflow
SR |= SR_CARRY;
A = 0x00;
ram[0] = 0xE9;
ram[1] = 0x01;
instructions = 1; run();
if(!(A == 0xFF && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_OVER))) return -1;
//overflow
SR |= SR_CARRY;
A = 0x7F;
ram[0] = 0xE9;
ram[1] = 0xFF;
instructions = 1; run();
if(!(A == 0x80 && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && SR&SR_OVER)) return -2;
//no borrow
SR &= (~SR_CARRY);
A = 0xC0;
ram[0] = 0xE9;
ram[1] = 0x40;
instructions = 1; run();
//overflow differs from 2nd sim ...
if(!(A == 0x7F && !(SR&SR_NEG) && !(SR&SR_ZERO) && SR&SR_CARRY && SR&SR_OVER)) return -3;
return 0;
}
int testSbcZeropage() {
//no overflow
SR |= SR_CARRY;
A = 0x00;
ram[0] = 0xE5;
ram[1] = 0x02;
ram[2] = 0x01;
instructions = 1; run();
if(!(A == 0xFF && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_OVER))) return -1;
//overflow
SR |= SR_CARRY;
A = 0x7F;
ram[0] = 0xE5;
ram[1] = 0x02;
ram[2] = 0xFF;
instructions = 1; run();
if(!(A == 0x80 && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && SR&SR_OVER)) return -2;
//no borrow
SR &= (~SR_CARRY);
A = 0xC0;
ram[0] = 0xE5;
ram[1] = 0x02;
ram[2] = 0x40;
instructions = 1; run();
//overflow differs from 2nd sim ...
if(!(A == 0x7F && !(SR&SR_NEG) && !(SR&SR_ZERO) && SR&SR_CARRY && SR&SR_OVER)) return -3;
return 0;
}
int testSbcZeropageX() {
X = 0x01; Y = 0x00;
//no overflow
SR |= SR_CARRY;
A = 0x00;
ram[0] = 0xF5;
ram[1] = 0x01;
ram[2] = 0x01;
instructions = 1; run();
if(!(A == 0xFF && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_OVER))) return -1;
//overflow
SR |= SR_CARRY;
A = 0x7F;
ram[0] = 0xF5;
ram[1] = 0x01;
ram[2] = 0xFF;
instructions = 1; run();
if(!(A == 0x80 && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && SR&SR_OVER)) return -2;
//no borrow
SR &= (~SR_CARRY);
A = 0xC0;
ram[0] = 0xF5;
ram[1] = 0x01;
ram[2] = 0x40;
instructions = 1; run();
//overflow differs from 2nd sim ...
if(!(A == 0x7F && !(SR&SR_NEG) && !(SR&SR_ZERO) && SR&SR_CARRY && SR&SR_OVER)) return -3;
return 0;
}
int testSbcAbsolute() {
//no overflow
SR |= SR_CARRY;
A = 0x00;
ram[0] = 0xED;
ram[1] = 0x03;
ram[2] = 0x00;
ram[3] = 0x01;
instructions = 1; run();
if(!(A == 0xFF && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_OVER))) return -1;
//overflow
SR |= SR_CARRY;
A = 0x7F;
ram[0] = 0xED;
ram[1] = 0x03;
ram[2] = 0x00;
ram[3] = 0xFF;
instructions = 1; run();
if(!(A == 0x80 && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && SR&SR_OVER)) return -2;
//no borrow
SR &= (~SR_CARRY);
A = 0xC0;
ram[0] = 0xED;
ram[1] = 0x03;
ram[2] = 0x00;
ram[3] = 0x40;
instructions = 1; run();
//overflow differs from 2nd sim ...
if(!(A == 0x7F && !(SR&SR_NEG) && !(SR&SR_ZERO) && SR&SR_CARRY && SR&SR_OVER)) return -3;
return 0;
}
int testSbcAbsoluteX() {
X = 0x01; Y = 0x00;
//no overflow
SR |= SR_CARRY;
A = 0x00;
ram[0] = 0xFD;
ram[1] = 0x02;
ram[2] = 0x00;
ram[3] = 0x01;
instructions = 1; run();
if(!(A == 0xFF && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_OVER))) return -1;
//overflow
SR |= SR_CARRY;
A = 0x7F;
ram[0] = 0xFD;
ram[1] = 0x02;
ram[2] = 0x00;
ram[3] = 0xFF;
instructions = 1; run();
if(!(A == 0x80 && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && SR&SR_OVER)) return -2;
//no borrow
SR &= (~SR_CARRY);
A = 0xC0;
ram[0] = 0xFD;
ram[1] = 0x02;
ram[2] = 0x00;
ram[3] = 0x40;
instructions = 1; run();
//overflow differs from 2nd sim ...
if(!(A == 0x7F && !(SR&SR_NEG) && !(SR&SR_ZERO) && SR&SR_CARRY && SR&SR_OVER)) return -3;
return 0;
}
int testSbcAbsoluteY() {
Y = 0x01; X = 0x00;
//no overflow
SR |= SR_CARRY;
A = 0x00;
ram[0] = 0xF9;
ram[1] = 0x02;
ram[2] = 0x00;
ram[3] = 0x01;
instructions = 1; run();
if(!(A == 0xFF && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_OVER))) return -1;
//overflow
SR |= SR_CARRY;
A = 0x7F;
ram[0] = 0xF9;
ram[1] = 0x02;
ram[2] = 0x00;
ram[3] = 0xFF;
instructions = 1; run();
if(!(A == 0x80 && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && SR&SR_OVER)) return -2;
//no borrow
SR &= (~SR_CARRY);
A = 0xC0;
ram[0] = 0xF9;
ram[1] = 0x02;
ram[2] = 0x00;
ram[3] = 0x40;
instructions = 1; run();
//overflow differs from 2nd sim ...
if(!(A == 0x7F && !(SR&SR_NEG) && !(SR&SR_ZERO) && SR&SR_CARRY && SR&SR_OVER)) return -3;
return 0;
}
int testSbcIndirectX() {
X = 0x01; Y = 0x00;
//no overflow
SR |= SR_CARRY;
A = 0x00;
ram[0] = 0xE1;
ram[1] = 0x02;
ram[2] = 0x02;
ram[3] = 0x01;
instructions = 1; run();
if(!(A == 0xFF && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_OVER))) return -1;
//overflow
SR |= SR_CARRY;
A = 0x7F;
ram[0] = 0xE1;
ram[1] = 0x02;
ram[2] = 0x02;
ram[3] = 0xFF;
instructions = 1; run();
if(!(A == 0x80 && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && SR&SR_OVER)) return -2;
//no borrow
SR &= (~SR_CARRY);
A = 0xC0;
ram[0] = 0xE1;
ram[1] = 0x02;
ram[2] = 0x02;
ram[3] = 0x40;
instructions = 1; run();
//overflow differs from 2nd sim ...
if(!(A == 0x7F && !(SR&SR_NEG) && !(SR&SR_ZERO) && SR&SR_CARRY && SR&SR_OVER)) return -3;
return 0;
}
int testSbcIndirectY() {
Y = 0x01; X = 0x00;
//no overflow
SR |= SR_CARRY;
A = 0x00;
ram[0] = 0xF1;
ram[1] = 0x02;
ram[2] = 0x03;
ram[3] = 0x00;
ram[4] = 0x01;
instructions = 1; run();
if(!(A == 0xFF && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && !(SR&SR_OVER))) return -1;
//overflow
SR |= SR_CARRY;
A = 0x7F;
ram[0] = 0xF1;
ram[1] = 0x02;
ram[2] = 0x03;
ram[3] = 0x00;
ram[4] = 0xFF;
instructions = 1; run();
if(!(A == 0x80 && SR&SR_NEG && !(SR&SR_ZERO) && !(SR&SR_CARRY) && SR&SR_OVER)) return -2;
//no borrow
SR &= (~SR_CARRY);
A = 0xC0;
ram[0] = 0xF1;
ram[1] = 0x02;
ram[2] = 0x03;
ram[3] = 0x00;
ram[4] = 0x40;
instructions = 1; run();
//overflow differs from 2nd sim ...
if(!(A == 0x7F && !(SR&SR_NEG) && !(SR&SR_ZERO) && SR&SR_CARRY && SR&SR_OVER)) return -3;
return 0;
}
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