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SSC: Experimental support for 6551's status bits: DCD and DSR via -dcd[-invert] and -dsr[-invert] args (#386)

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tomcw
2017-03-19 21:44:20 +00:00
parent b377dc8afb
commit abd99d109e
3 changed files with 54 additions and 10 deletions
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source/SerialComms.cpp
+27 -9
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@@ -721,10 +721,12 @@ BYTE __stdcall CSuperSerialCard::CommStatus(WORD, WORD, BYTE, BYTE, ULONG)
if (!CheckComm())
return ST_DSR | ST_DCD | ST_TX_EMPTY;
#ifdef SUPPORT_MODEM
DWORD modemstatus = 0;
GetCommModemStatus(m_hCommHandle,&modemstatus); // Returns 0x30 = MS_DSR_ON|MS_CTS_ON
#endif
DWORD modemStatus = 0;
if ((m_hCommHandle != INVALID_HANDLE_VALUE) && (m_bCfgSupportDCD || m_bCfgSupportDSR))
{
// Do this outside of the critical section (don't know how long it takes)
GetCommModemStatus(m_hCommHandle, &modemStatus); // Returns 0x30 = MS_DSR_ON|MS_CTS_ON
}
//
@@ -757,13 +759,29 @@ BYTE __stdcall CSuperSerialCard::CommStatus(WORD, WORD, BYTE, BYTE, ULONG)
//
BYTE DCD = 0;
BYTE DSR = 0;
if ((m_hCommHandle != INVALID_HANDLE_VALUE) && (m_bCfgSupportDCD || m_bCfgSupportDSR))
{
if (m_bCfgSupportDCD)
{
DCD = (modemStatus & MS_RLSD_ON) ? 0x00 : ST_DCD;
if (m_bCfgInvertDCD) DCD = (DCD == 0) ? ST_DCD : 0;
}
if (m_bCfgSupportDSR)
{
DSR = (modemStatus & MS_DSR_ON) ? 0x00 : ST_DSR;
if (m_bCfgInvertDSR) DSR = (DSR == 0) ? ST_DSR : 0;
}
}
BYTE uStatus = ST_TX_EMPTY
| ((!bComSerialBufferEmpty || !m_qTcpSerialBuffer.empty()) ? ST_RX_FULL : 0x00)
#ifdef SUPPORT_MODEM
| ((modemstatus & MS_RLSD_ON) ? 0x00 : ST_DCD) // Need 0x00 to allow ZLink to start up
| ((modemstatus & MS_DSR_ON) ? 0x00 : ST_DSR)
#endif
| (bIRQ ? ST_IRQ : 0x00);
| DCD // Need 0x00 to allow ZLink to start up
| DSR
| (bIRQ ? ST_IRQ : 0x00);
if (m_hCommHandle != INVALID_HANDLE_VALUE)
{