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