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* Add ACIA Interrupt tests.

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* Fix ACIA6850 Interrupt behavior, Interrupt should be cleared on status register read.
* Remove unneeded cpuAccess if statement from Acia6850 write that was preventing build completion
* Fix ACIA6850 Tests so they run.
This commit is contained in:
Matt Harlum committed 2017-06-06 12:55:35 +10:00
1 parent 3c3aee30a7
commit faf5d22660
3 files changed
+173 -13
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src/test/java/com/loomcom/symon/AciaTest6850.java → src/test/java/com/loomcom/symon/Acia6850Test.java
+94 -4
View File
@@ -7,7 +7,7 @@ import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.*;
public class AciaTest6850 {
public class Acia6850Test {
private final static int CMD_STAT_REG = 0;
private final static int DATA_REG = 1;
@@ -91,6 +91,78 @@ public class AciaTest6850 {
verify(mockBus, never()).assertIrq();
}
@Test
public void shouldTriggerInterruptFlagOnRxFullIfRxIrqEnabled() throws Exception {
Bus mockBus = mock(Bus.class);
Acia acia = newAcia();
acia.setBus(mockBus);
// Disable TX IRQ, Enable RX IRQ
acia.write(CMD_STAT_REG, 0x80);
acia.rxWrite('a');
// Receive should cause IRQ flag to be set
assertEquals(0x80, acia.read(0x0000, true) & 0x80);
}
@Test
public void shouldNotTriggerInterruptFlagOnRxFullIfRxIrqNotEnabled() throws Exception {
Bus mockBus = mock(Bus.class);
Acia acia = newAcia();
acia.setBus(mockBus);
// Disable TX IRQ, Disable RX IRQ
acia.write(CMD_STAT_REG, 0x00);
acia.rxWrite('a');
// Receive should not cause IRQ flag to be set
assertEquals(0x00, acia.read(0x0000, true) & 0x80);
}
@Test
public void shouldTriggerInterruptFlagOnTxEmptyIfTxIrqEnabled() throws Exception {
Bus mockBus = mock(Bus.class);
Acia acia = newAcia();
acia.setBus(mockBus);
// Enable TX IRQ, Disable RX IRQ
acia.write(CMD_STAT_REG, 0x20);
// Write data
acia.write(1, 'a');
verify(mockBus, never()).assertIrq();
// Transmission should cause IRQ flag to be set
acia.txRead(true);
assertEquals(0x80, acia.read(0x0000, true) & 0x80);
}
@Test
public void shouldNotTriggerInterruptFlagOnTxEmptyIfTxIrqNotEnabled() throws Exception {
Bus mockBus = mock(Bus.class);
Acia acia = newAcia();
acia.setBus(mockBus);
// Disable TX IRQ, Disable RX IRQ
acia.write(CMD_STAT_REG, 0x02);
// Write data
acia.write(DATA_REG, 'a');
// Transmission should not cause IRQ flag to be set
acia.txRead(true);
assertEquals(0x00, acia.read(0x0000, true) & 0x80);
}
@Test
public void newAciaShouldHaveTxEmptyStatus() throws Exception {
Acia acia = newAcia();
@@ -129,6 +201,24 @@ public class AciaTest6850 {
@Test
public void aciaShouldOverrunAndReadShouldReset()
throws Exception {
Acia acia = newAcia();
// overrun ACIA
acia.rxWrite('a');
acia.rxWrite('b');
assertEquals(0x20, acia.read(CMD_STAT_REG, true) & 0x20);
// read should reset
acia.rxRead(true);
assertEquals(0x00, acia.read(CMD_STAT_REG, true) & 0x20);
}
@Test
public void aciaShouldOverrunAndMemoryWindowReadShouldNotReset()
throws Exception {
Acia acia = newAcia();
@@ -138,9 +228,9 @@ public class AciaTest6850 {
assertEquals(0x20, acia.read(CMD_STAT_REG, true) & 0x20);
// read should reset
acia.rxRead(true);
assertEquals(0x00, acia.read(CMD_STAT_REG, true) & 0x20);
// memory window read should not reset
acia.rxRead(false);
assertEquals(0x20, acia.read(CMD_STAT_REG, true) & 0x20);
}
src/test/java/com/loomcom/symon/AciaTest.java
+73 -1
View File
@@ -73,12 +73,84 @@ public class AciaTest {
// Write data
acia.write(0, 'a');
// Transmission should cause IRQ
// Transmission should not cause IRQ
acia.txRead(true);
verify(mockBus, never()).assertIrq();
}
@Test
public void shouldTriggerInterruptFlagOnRxFullIfRxIrqEnabled() throws Exception {
Bus mockBus = mock(Bus.class);
Acia acia = new Acia6551(0x000);
acia.setBus(mockBus);
// Disable TX IRQ, Enable RX IRQ
acia.write(2, 0x00);
acia.rxWrite('a');
// Receive should cause IRQ flag to be set
assertEquals(0x80, acia.read(0x0001, true) & 0x80);
}
@Test
public void shouldNotTriggerInterruptFlagOnRxFullIfRxIrqNotEnabled() throws Exception {
Bus mockBus = mock(Bus.class);
Acia acia = new Acia6551(0x000);
acia.setBus(mockBus);
// Disable TX IRQ, Disable RX IRQ
acia.write(2, 0x02);
acia.rxWrite('a');
// Receive should not cause IRQ flag to be set
assertEquals(0x00, acia.read(0x0001, true) & 0x80);
}
@Test
public void shouldTriggerInterruptFlagOnTxEmptyIfTxIrqEnabled() throws Exception {
Bus mockBus = mock(Bus.class);
Acia acia = new Acia6551(0x000);
acia.setBus(mockBus);
// Enable TX IRQ, Disable RX IRQ
acia.write(2, 0x06);
// Write data
acia.write(0, 'a');
verify(mockBus, never()).assertIrq();
// Transmission should cause IRQ flag to be set
acia.txRead(true);
assertEquals(0x80, acia.read(0x0001, true) & 0x80);
}
@Test
public void shouldNotTriggerInterruptFlagOnTxEmptyIfTxIrqNotEnabled() throws Exception {
Bus mockBus = mock(Bus.class);
Acia acia = new Acia6551(0x000);
acia.setBus(mockBus);
// Disable TX IRQ, Disable RX IRQ
acia.write(2, 0x02);
// Write data
acia.write(0, 'a');
// Transmission should not cause IRQ flag to be set
acia.txRead(true);
assertEquals(0x00, acia.read(0x0001, true) & 0x80);
}
@Test
public void newAciaShouldHaveTxEmptyStatus() throws Exception {
Acia acia = new Acia6551(0x000);