OXYGENHUB
◆ main openmsx / src / serial / RS232Device.cc
1.6 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
e8555c89 Andy McCall 1 
#include "RS232Device.hh"
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namespace openmsx {
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zstring_view RS232Device::getClass() const
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{
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	return "RS232";
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}
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void RS232Device::setDataBits(DataBits /*bits*/)
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{
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	// ignore
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}
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void RS232Device::setStopBits(StopBits /*bits*/)
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{
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	// ignore
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}
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void RS232Device::setParityBit(bool /*enable*/, Parity /*parity*/)
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{
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	// ignore
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}
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// The input lines of the RS-232 port without any plugged in device
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// are left floating (bits read as 1 in the IO ports), with the exception
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// of the following devices:
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//
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// Spectravideo SVI-738 : Inputs are pull-up (Read as 0 in the IO ports)
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// Spectravideo SVI-737 and SVI-757: Inputs are pull-down, behave
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//                                   the same as left floating.
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//
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// This has been tested to be true for the SVI-738 and Toshiba HX-22,
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// for the other devices the info comes from manuals, schematics, or
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// circuit board pictures.
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//
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// Return an empty optional to indicate an unplugged input, in which case
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// the configuration tag 'rs232_pullup' will be used as the
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// effective value.
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std::optional<bool> RS232Device::getCTS(EmuTime /*time*/) const
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{
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	return {};
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}
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std::optional<bool> RS232Device::getDSR(EmuTime /*time*/) const
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{
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	return {};
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}
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std::optional<bool> RS232Device::getDCD(EmuTime /*time*/) const
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{
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	return {};
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}
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std::optional<bool> RS232Device::getRI(EmuTime /*time*/) const
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{
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	return {};
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}
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void RS232Device::setDTR(bool /*status*/, EmuTime /*time*/)
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{
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	// ignore
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}
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void RS232Device::setRTS(bool /*status*/, EmuTime /*time*/)
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{
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	// ignore
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}
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void RS232Device::setBaudRate(unsigned /*baud*/)
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{
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	// ignore
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}
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} // namespace openmsx