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Implemented Zero Page,X, Zero Page,Y, and Indirect addressing mode instructions, along with unit tests.

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Seth Morabito committed 2008-12-29 20:46:48 -08:00
1 parent 66fc63a36e
commit 107aca7777
6 files changed
+1406 -22
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src/test/java/com/loomcom/symon/CpuTest.java
+40
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@@ -355,4 +355,44 @@ public class CpuTest extends TestCase {
assertEquals(0xffff, cpu.address(0xff, 0xff));
}
public void testZpxAddress() {
cpu.setXRegister(0x00);
assertEquals(0x10, cpu.zpxAddress(0x10));
cpu.setXRegister(0x10);
assertEquals(0x20, cpu.zpxAddress(0x10));
cpu.setXRegister(0x25);
assertEquals(0x35, cpu.zpxAddress(0x10));
cpu.setXRegister(0xf5);
assertEquals(0x05, cpu.zpxAddress(0x10));
cpu.setXRegister(0x00);
assertEquals(0x80, cpu.zpxAddress(0x80));
cpu.setXRegister(0x10);
assertEquals(0x90, cpu.zpxAddress(0x80));
cpu.setXRegister(0x25);
assertEquals(0xa5, cpu.zpxAddress(0x80));
cpu.setXRegister(0x95);
assertEquals(0x15, cpu.zpxAddress(0x80));
}
public void testZpyAddress() {
cpu.setYRegister(0x00);
assertEquals(0x10, cpu.zpyAddress(0x10));
cpu.setYRegister(0x10);
assertEquals(0x20, cpu.zpyAddress(0x10));
cpu.setYRegister(0x25);
assertEquals(0x35, cpu.zpyAddress(0x10));
cpu.setYRegister(0xf5);
assertEquals(0x05, cpu.zpyAddress(0x10));
cpu.setYRegister(0x00);
assertEquals(0x80, cpu.zpyAddress(0x80));
cpu.setYRegister(0x10);
assertEquals(0x90, cpu.zpyAddress(0x80));
cpu.setYRegister(0x25);
assertEquals(0xa5, cpu.zpyAddress(0x80));
cpu.setYRegister(0x95);
assertEquals(0x15, cpu.zpyAddress(0x80));
}
}