Package com.loomcom.symon.devices

Examples of com.loomcom.symon.devices.Acia

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    }

    @Test
    public void readingBuffersShouldResetStatus()
            throws Exception {
        Acia acia = newAcia();

        assertEquals(0x00, acia.read(CMD_STAT_REG) & 0x01);
       
        acia.rxWrite('a');
       
        assertEquals(0x01, acia.read(CMD_STAT_REG) & 0x01);
       
        acia.rxRead();
       
        assertEquals(0x00, acia.read(CMD_STAT_REG) & 0x01);       
       
    }
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    @Test
    public void shouldTriggerInterruptOnRxFullIfRxIrqEnabled() 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');

        verify(mockBus, atLeastOnce()).assertIrq();
    }
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    @Test
    public void shouldNotTriggerInterruptOnRxFullIfRxIrqNotEnabled() 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');

        verify(mockBus, never()).assertIrq();
    }
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    @Test
    public void shouldTriggerInterruptOnTxEmptyIfTxIrqEnabled() 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
        acia.txRead();

        verify(mockBus, atLeastOnce()).assertIrq();
    }
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    @Test
    public void shouldNotTriggerInterruptOnTxEmptyIfTxIrqNotEnabled() 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 cause IRQ
        acia.txRead();

        verify(mockBus, never()).assertIrq();
    }
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        verify(mockBus, never()).assertIrq();
    }

    @Test
    public void newAciaShouldHaveTxEmptyStatus() throws Exception {
        Acia acia = new Acia6551(0x000);

        assertEquals(0x10, acia.read(0x0001));
    }
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        assertEquals(0x10, acia.read(0x0001));
    }

    @Test
    public void aciaShouldHaveTxEmptyStatusOffIfTxHasData() throws Exception {
        Acia acia = new Acia6551(0x000);

        acia.txWrite('a');
        assertEquals(0x00, acia.read(0x0001));
    }
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        assertEquals(0x00, acia.read(0x0001));
    }

    @Test
    public void aciaShouldHaveRxFullStatusOffIfRxHasData() throws Exception {
        Acia acia = new Acia6551(0x000);

        acia.rxWrite('a');
        assertEquals(0x18, acia.read(0x0001));
    }
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    }

    @Test
    public void aciaShouldHaveTxEmptyAndRxFullStatusOffIfRxAndTxHaveData()
            throws Exception {
        Acia acia = new Acia6551(0x000);

        acia.rxWrite('a');
        acia.txWrite('b');

        assertEquals(0x08, acia.read(0x0001));
    }
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    @Test
    public void aciaShouldOverrunAndReadShouldReset()
            throws Exception {
       
        Acia acia = new Acia6551(0x0000);
       
        // overrun ACIA
        acia.rxWrite('a');
        acia.rxWrite('b');
       
        assertEquals(0x04, acia.read(0x0001) & 0x04);
       
        // read should reset
        acia.rxRead();
        assertEquals(0x00, acia.read(0x0001) & 0x04);
       
    }
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Related Classes of com.loomcom.symon.devices.Acia

  • com.loomcom.symon.AciaTest
  • com.loomcom.symon.AciaTest6850
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