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. DCD state is now a mirror of DSR unless -dcd switch is used. (Fixes #553)
. Removed -dsr,-dtr switches, so -modem is now an alias for -dcd.  (Also for #553)
. Wait for events (RLSD,DSR,CTS) in CommThread and call GetCommModemStatus() in CommThread.
This commit is contained in:
tomcw
2018-04-22 14:37:59 +01:00
parent 279fdf523b
commit 52e7d61c7e
3 changed files with 34 additions and 71 deletions
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source/SerialComms.cpp
+30 -50
View File
@@ -68,9 +68,7 @@ CSuperSerialCard::CSuperSerialCard() :
m_aySerialPortChoices(NULL),
m_uTCPChoiceItemIdx(0),
m_uSlot(0),
m_bCfgSupportDCD(false),
m_bCfgSupportDSR(false),
m_bCfgSupportDTR(false)
m_bCfgSupportDCD(false)
{
memset(m_ayCurrentSerialPortName, 0, sizeof(m_ayCurrentSerialPortName));
m_dwSerialPortItem = 0;
@@ -119,6 +117,7 @@ void CSuperSerialCard::InternalReset()
m_uDTR = DTR_CONTROL_DISABLE;
m_uRTS = RTS_CONTROL_DISABLE;
m_dwModemStatus = m_kDefaultModemStatus;
}
CSuperSerialCard::~CSuperSerialCard()
@@ -524,11 +523,8 @@ void CSuperSerialCard::UpdateCommandReg(BYTE command)
m_bRxIrqEnabled = false;
}
if (m_bCfgSupportDTR) // GH#386
{
// Data Terminal Ready (DTR) setting (0=set DTR high (indicates 'not ready'))
m_uDTR = (m_uCommandByte & CMD_DTR) ? DTR_CONTROL_ENABLE : DTR_CONTROL_DISABLE;
}
// Data Terminal Ready (DTR) setting (0=set DTR high (indicates 'not ready')) (GH#386)
m_uDTR = (m_uCommandByte & CMD_DTR) ? DTR_CONTROL_ENABLE : DTR_CONTROL_DISABLE;
}
BYTE __stdcall CSuperSerialCard::CommCommand(WORD, WORD, BYTE write, BYTE value, ULONG)
@@ -754,29 +750,21 @@ BYTE __stdcall CSuperSerialCard::CommStatus(WORD, WORD, BYTE, BYTE, ULONG)
if (!CheckComm())
return ST_DSR | ST_DCD | ST_TX_EMPTY;
static DWORD modemStatus = 0;
if (m_bCfgSupportDCD || m_bCfgSupportDSR)
DWORD modemStatus = m_kDefaultModemStatus;
if (m_hCommHandle != INVALID_HANDLE_VALUE)
{
if (m_hCommHandle != INVALID_HANDLE_VALUE)
modemStatus = m_dwModemStatus; // Take a copy of this volatile variable
if (!m_bCfgSupportDCD) // Default: DSR state is mirrored to DCD (GH#553)
{
// Call GetCommModemStatus() outside of the critical section. For Win7-64: takes 1-2msecs!
static DWORD dwLastTimeGettingModemStatus = 0;
DWORD dwCurrTime = GetTickCount();
if (dwCurrTime - dwLastTimeGettingModemStatus > 8) // Limit reading status to twice a 16.6ms video frame (arbitrary throttle limit)
{
// Only permit periodic reading, otherwise a tight 6502 polling loop can kill emulator performance!
GetCommModemStatus(m_hCommHandle, &modemStatus); // Returns 0x30 = MS_DSR_ON|MS_CTS_ON
dwLastTimeGettingModemStatus = dwCurrTime;
}
}
else if (m_hCommListenSocket != INVALID_SOCKET)
{
if (m_hCommAcceptSocket != INVALID_SOCKET)
modemStatus = MS_RLSD_ON | MS_DSR_ON | MS_CTS_ON;
else
modemStatus = 0;
modemStatus &= ~MS_RLSD_ON;
if (modemStatus & MS_DSR_ON)
modemStatus |= MS_RLSD_ON;
}
}
else if (m_hCommListenSocket != INVALID_SOCKET && m_hCommAcceptSocket != INVALID_SOCKET)
{
modemStatus = MS_RLSD_ON | MS_DSR_ON | MS_CTS_ON;
}
//
@@ -803,17 +791,8 @@ BYTE __stdcall CSuperSerialCard::CommStatus(WORD, WORD, BYTE, BYTE, ULONG)
//
BYTE DSR = 0;
BYTE DCD = 0;
if ((m_hCommHandle != INVALID_HANDLE_VALUE) && (m_bCfgSupportDCD || m_bCfgSupportDSR)) // GH#386
{
if (m_bCfgSupportDSR)
DSR = (modemStatus & MS_DSR_ON) ? 0x00 : ST_DSR;
if (m_bCfgSupportDCD)
DCD = (modemStatus & MS_RLSD_ON) ? 0x00 : ST_DCD;
}
BYTE DSR = (modemStatus & MS_DSR_ON) ? 0x00 : ST_DSR; // DSR is active low (see SY6551 datasheet) (GH#386)
BYTE DCD = (modemStatus & MS_RLSD_ON) ? 0x00 : ST_DCD; // DCD is active low (see SY6551 datasheet) (GH#386)
//
@@ -825,7 +804,7 @@ BYTE __stdcall CSuperSerialCard::CommStatus(WORD, WORD, BYTE, BYTE, ULONG)
BYTE uStatus =
IRQ
| DSR
| DCD // Need 0x00 (ie. DCD is active) to allow ZLink to start up
| DCD
| TX_EMPTY
| RX_FULL;
@@ -882,17 +861,11 @@ BYTE __stdcall CSuperSerialCard::CommDipSw(WORD, WORD addr, BYTE, BYTE, ULONG)
BYTE SW2_5 = m_DIPSWCurrent.bLinefeed ? 0 : 1; // SW2-5 (LF: yes-ON(0); no-OFF(1))
BYTE CTS = 0; // GH#311
BYTE CTS = 1; // Default to CTS being false. (Support CTS in DIPSW: GH#311)
if (CheckComm() && m_hCommHandle != INVALID_HANDLE_VALUE)
{
DWORD modemStatus = 0;
if (GetCommModemStatus(m_hCommHandle, &modemStatus))
CTS = (modemStatus & MS_CTS_ON) ? 0 : 1; // CTS is true when 0
}
CTS = (m_dwModemStatus & MS_CTS_ON) ? 0 : 1; // CTS active low (see SY6551 datasheet)
else if (m_hCommListenSocket != INVALID_SOCKET)
{
CTS = (m_hCommAcceptSocket != INVALID_SOCKET) ? 0 : 1;
}
// SSC-54:
sw = SW2_1<<7 | // b7 : SW2-1
@@ -1070,10 +1043,18 @@ void CSuperSerialCard::CheckCommEvent(DWORD dwEvtMask)
LeaveCriticalSection(&m_CriticalSection);
}
}
else if (dwEvtMask & EV_TXEMPTY)
if (dwEvtMask & EV_TXEMPTY)
{
TransmitDone();
}
if (dwEvtMask & (EV_RLSD|EV_DSR|EV_CTS))
{
// For Win7-64: takes 1-2msecs!
// Don't read from main emulation thread, otherwise a tight 6502 polling loop can kill emulator performance!
GetCommModemStatus(m_hCommHandle, const_cast<DWORD*>(&m_dwModemStatus));
}
}
DWORD WINAPI CSuperSerialCard::CommThread(LPVOID lpParameter)
@@ -1081,8 +1062,7 @@ DWORD WINAPI CSuperSerialCard::CommThread(LPVOID lpParameter)
CSuperSerialCard* pSSC = (CSuperSerialCard*) lpParameter;
char szDbg[100];
BOOL bRes = SetCommMask(pSSC->m_hCommHandle, EV_TXEMPTY | EV_RXCHAR);
// BOOL bRes = SetCommMask(pSSC->m_hCommHandle, EV_RXCHAR); // Just RX
BOOL bRes = SetCommMask(pSSC->m_hCommHandle, EV_RLSD | EV_DSR | EV_CTS | EV_TXEMPTY | EV_RXCHAR);
if (!bRes)
{
sprintf(szDbg, "SSC: CommThread(): SetCommMask() failed\n");