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Mostly just random guesses now, to be honest. It's approaching the end of my window for the morning.

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This commit is contained in:
Thomas Harte 2016-07-07 07:16:36 -04:00
parent 81e6cc34e5
commit 199c0e27e0
1 changed files with 7 additions and 6 deletions
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13
Machines/Commodore/1540/Commodore1540.hpp
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@ -34,9 +34,10 @@ class SerialPortVIA: public MOS::MOS6522<SerialPortVIA>, public MOS::MOS6522IRQD
if(port) {
std::shared_ptr<::Commodore::Serial::Port> serialPort = _serialPort.lock();
if(serialPort) {
printf("1540 output: %02x\n", value);
// serialPort->set_output(::Commodore::Serial::Line::Attention, !(value&0x10));
serialPort->set_output(::Commodore::Serial::Line::Clock, (::Commodore::Serial::LineLevel)(value&0x08));
serialPort->set_output(::Commodore::Serial::Line::Data, (::Commodore::Serial::LineLevel)(value&0x02));
serialPort->set_output(::Commodore::Serial::Line::Clock, (::Commodore::Serial::LineLevel)!(value&0x08));
serialPort->set_output(::Commodore::Serial::Line::Data, (::Commodore::Serial::LineLevel)!(value&0x02));
}
// printf("1540 serial port VIA port B: %02x\n", value);
}
@ -48,11 +49,11 @@ class SerialPortVIA: public MOS::MOS6522<SerialPortVIA>, public MOS::MOS6522IRQD
// printf("1540 Serial port line %d: %s\n", line, value ? "on" : "off");
switch(line) {
default: break;
case ::Commodore::Serial::Line::Data: _portB = (_portB & ~0x01) | (value ? 0x01 : 0x00); break;
case ::Commodore::Serial::Line::Clock: _portB = (_portB & ~0x04) | (value ? 0x04 : 0x00); break;
case ::Commodore::Serial::Line::Data: _portB = (_portB & ~0x01) | (value ? 0x00 : 0x01); break;
case ::Commodore::Serial::Line::Clock: _portB = (_portB & ~0x04) | (value ? 0x00 : 0x04); break;
case ::Commodore::Serial::Line::Attention:
_portB = (_portB & ~0x80) | (value ? 0x80 : 0x00);
set_control_line_input(Port::A, Line::One, value);
_portB = (_portB & ~0x80) | (value ? 0x00 : 0x80);
set_control_line_input(Port::A, Line::One, !value);
break;
}
}