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added some tests for CMP

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Preston Skupinski 2011-05-07 18:55:19 -04:00
parent 96022047d6
commit 41d1b2f17c
1 changed files with 29 additions and 0 deletions
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test/tests.js
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@ -20,6 +20,35 @@ function run_tests() {
test_branching();
test_adc();
test_sbc();
test_cmp();
}
function test_cmp() {
module("CMP");
test("Compare two 8-bit numbers, 0x01 and 0xff", function() {
var cpu = new CPU_65816();
cpu.execute("18fbe23018a901c9ff");
equals(cpu.r.a, 0x01, "CMP should not change the value of the "+
"accumulator");
equals(cpu.p.z, 0, "When comparing 0x01 and 0xff the zero(z) bit "+
"should not be set (0x01 != 0xff)");
equals(cpu.p.n, 0, "When comparing 0x01 and 0xff the negative(n) bit "+
"should not be set");
equals(cpu.p.c, 0, "When comparing 0x01 and 0xff the carry(c) bit "+
"should not be set (0x01 < 0xff)");
});
test("Compare two 16-bit numbers, 0xff01 and 0xfeff", function() {
var cpu = new CPU_65816();
cpu.execute("18fbc23018a901ffc9fffe");
equals(cpu.r.a, 0xff01, "CMP should not change the value of the "+
"accumulator");
equals(cpu.p.n, 0, "When comparing 0xff01 and 0xfeff the negative(n) "+
"bit should not be set");
equals(cpu.p.z, 0, "When comparing 0xff01 and 0xfeff the zero(z) bit "+
"should not be set (0xff01 != 0xfeff)");
equals(cpu.p.c, 1, "When comparing 0xff01 and 0xfeff the carry(c) bit"+
"should be set (0xff01 >= 0xfeff)");
});
}
function test_sbc() {