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Issue #16: Memory window should not reset device registers

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Matt Harlum committed 2017-05-26 17:01:41 +10:00
1 parent 9cdd718e8d
commit 96819f1bf7
26 files changed
+355 -318
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src/test/java/com/loomcom/symon/CpuTest.java
+25 -25
View File
@@ -71,61 +71,61 @@ public class CpuTest extends TestCase {
public void testStackPush() throws MemoryAccessException {
assertEquals(0xff, cpu.getStackPointer());
assertEquals(0x00, bus.read(0x1ff));
assertEquals(0x00, bus.read(0x1ff, true));
cpu.stackPush(0x06);
assertEquals(0xfe, cpu.getStackPointer());
assertEquals(0x06, bus.read(0x1ff));
assertEquals(0x06, bus.read(0x1ff, true));
cpu.stackPush(0x05);
assertEquals(0xfd, cpu.getStackPointer());
assertEquals(0x06, bus.read(0x1ff));
assertEquals(0x05, bus.read(0x1fe));
assertEquals(0x06, bus.read(0x1ff, true));
assertEquals(0x05, bus.read(0x1fe, true));
cpu.stackPush(0x04);
assertEquals(0xfc, cpu.getStackPointer());
assertEquals(0x06, bus.read(0x1ff));
assertEquals(0x05, bus.read(0x1fe));
assertEquals(0x04, bus.read(0x1fd));
assertEquals(0x06, bus.read(0x1ff, true));
assertEquals(0x05, bus.read(0x1fe, true));
assertEquals(0x04, bus.read(0x1fd, true));
cpu.stackPush(0x03);
assertEquals(0xfb, cpu.getStackPointer());
assertEquals(0x06, bus.read(0x1ff));
assertEquals(0x05, bus.read(0x1fe));
assertEquals(0x04, bus.read(0x1fd));
assertEquals(0x03, bus.read(0x1fc));
assertEquals(0x06, bus.read(0x1ff, true));
assertEquals(0x05, bus.read(0x1fe, true));
assertEquals(0x04, bus.read(0x1fd, true));
assertEquals(0x03, bus.read(0x1fc, true));
cpu.stackPush(0x02);
assertEquals(0xfa, cpu.getStackPointer());
assertEquals(0x06, bus.read(0x1ff));
assertEquals(0x05, bus.read(0x1fe));
assertEquals(0x04, bus.read(0x1fd));
assertEquals(0x03, bus.read(0x1fc));
assertEquals(0x02, bus.read(0x1fb));
assertEquals(0x06, bus.read(0x1ff, true));
assertEquals(0x05, bus.read(0x1fe, true));
assertEquals(0x04, bus.read(0x1fd, true));
assertEquals(0x03, bus.read(0x1fc, true));
assertEquals(0x02, bus.read(0x1fb, true));
cpu.stackPush(0x01);
assertEquals(0xf9, cpu.getStackPointer());
assertEquals(0x06, bus.read(0x1ff));
assertEquals(0x05, bus.read(0x1fe));
assertEquals(0x04, bus.read(0x1fd));
assertEquals(0x03, bus.read(0x1fc));
assertEquals(0x02, bus.read(0x1fb));
assertEquals(0x01, bus.read(0x1fa));
assertEquals(0x06, bus.read(0x1ff, true));
assertEquals(0x05, bus.read(0x1fe, true));
assertEquals(0x04, bus.read(0x1fd, true));
assertEquals(0x03, bus.read(0x1fc, true));
assertEquals(0x02, bus.read(0x1fb, true));
assertEquals(0x01, bus.read(0x1fa, true));
}
public void testStackPushWrapsAroundToStackTop() throws MemoryAccessException {
cpu.setStackPointer(0x01);
cpu.stackPush(0x01);
assertEquals(0x01, bus.read(0x101));
assertEquals(0x01, bus.read(0x101, true));
assertEquals(0x00, cpu.getStackPointer());
cpu.stackPush(0x02);
assertEquals(0x02, bus.read(0x100));
assertEquals(0x02, bus.read(0x100, true));
assertEquals(0xff, cpu.getStackPointer());
cpu.stackPush(0x03);
assertEquals(0x03, bus.read(0x1ff));
assertEquals(0x03, bus.read(0x1ff, true));
assertEquals(0xfe, cpu.getStackPointer());
}