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AppleWin/source/SerialComms.cpp
Andrea e27879ac99
Move interface into a class FrameBase. (PR #893) 
. Move the Win32  implementation into Win32Frame.
2020-12-24 15:08:50 +00:00

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/*
AppleWin : An Apple //e emulator for Windows
Copyright (C) 1994-1996, Michael O'Brien
Copyright (C) 1999-2001, Oliver Schmidt
Copyright (C) 2002-2005, Tom Charlesworth
Copyright (C) 2006-2009, Tom Charlesworth, Michael Pohoreski, Nick Westgate
AppleWin is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
AppleWin is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with AppleWin; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Description: Super Serial Card emulation
*
* Author: Various
*/
// Refs:
// [Ref.1] AppleWin\docs\SSC Memory Locations for Programmers.txt
// [Ref.2] SSC recv IRQ example: https://sites.google.com/site/drjohnbmatthews/apple2/ssc - John B. Matthews, 5/13/87
// [Ref.3] SY6551 info: http://users.axess.com/twilight/sock/rs232pak.html
//
// SSC-pg is an abbreviation for pages references to "Super Serial Card, Installation and Operating Manual" by Apple
#include "StdAfx.h"
#include "SerialComms.h"
#include "CPU.h"
#include "Interface.h"
#include "Log.h"
#include "Memory.h"
#include "YamlHelper.h"
#include "../resource/resource.h"
#define TCP_SERIAL_PORT 1977
// Default: 9600-8-N-1
SSC_DIPSW CSuperSerialCard::m_DIPSWDefault =
{
// DIPSW1:
CBR_9600, // Use 9600, as a 1MHz Apple II can only handle up to 9600 bps [Ref.1]
FWMODE_CIC,
// DIPSW2:
ONESTOPBIT,
8, // ByteSize
NOPARITY,
false, // SW2-5: LF(0x0A). SSC-24: In Comms mode, SSC automatically discards LF immediately following CR
true, // SW2-6: Interrupts. SSC-47: Passes interrupt requests from ACIA to the Apple II. NB. Can't be read from software
};
//===========================================================================
CSuperSerialCard::CSuperSerialCard(UINT slot) :
Card(CT_SSC),
m_uSlot(slot),
m_aySerialPortChoices(NULL),
m_uTCPChoiceItemIdx(0),
m_bCfgSupportDCD(false),
m_pExpansionRom(NULL)
{
m_ayCurrentSerialPortName.clear();
m_dwSerialPortItem = 0;
m_hCommHandle = INVALID_HANDLE_VALUE;
m_hCommListenSocket = INVALID_SOCKET;
m_hCommAcceptSocket = INVALID_SOCKET;
m_hCommThread = NULL;
for (UINT i=0; i<COMMEVT_MAX; i++)
m_hCommEvent[i] = NULL;
memset(&m_o, 0, sizeof(m_o));
InternalReset();
}
void CSuperSerialCard::InternalReset()
{
GetDIPSW();
// SY6551 datasheet: Hardware reset sets Command register to 0
// . NB. MOS6551 datasheet: Hardware reset: b#00000010 (so ACIA not init'd on IN#2!)
// SY6551 datasheet: Hardware reset sets Control register to 0 - the DIPSW settings are not used by h/w to setup this register
UpdateCommandAndControlRegs(0, 0); // Baud=External clock! 8-N-1
//
m_vbTxIrqPending = false;
m_vbRxIrqPending = false;
m_vbTxEmpty = true;
m_vuRxCurrBuffer = 0;
m_qComSerialBuffer[0].clear();
m_qComSerialBuffer[1].clear();
m_qTcpSerialBuffer.clear();
m_uDTR = DTR_CONTROL_DISABLE;
m_uRTS = RTS_CONTROL_DISABLE;
m_dwModemStatus = m_kDefaultModemStatus;
}
CSuperSerialCard::~CSuperSerialCard()
{
delete [] m_aySerialPortChoices;
}
//===========================================================================
// TODO: Serial Comms - UI Property Sheet Page:
// . Ability to config the 2x DIPSWs - only takes affect after next Apple2 reset
// . 'Default' button that resets DIPSWs to DIPSWDefaults
// . Must respect IRQ disable dipswitch (cannot be overridden or read by software)
void CSuperSerialCard::GetDIPSW()
{
// TODO: Read settings from Registry(?). In the meantime, use the defaults:
SetDIPSWDefaults();
}
void CSuperSerialCard::SetDIPSWDefaults()
{
// Default DIPSW settings (comms mode)
// DIPSW1:
m_DIPSWCurrent.uBaudRate = m_DIPSWDefault.uBaudRate;
m_DIPSWCurrent.eFirmwareMode = m_DIPSWDefault.eFirmwareMode;
// DIPSW2:
m_DIPSWCurrent.uStopBits = m_DIPSWDefault.uStopBits;
m_DIPSWCurrent.uByteSize = m_DIPSWDefault.uByteSize;
m_DIPSWCurrent.uParity = m_DIPSWDefault.uParity;
m_DIPSWCurrent.bLinefeed = m_DIPSWDefault.bLinefeed;
m_DIPSWCurrent.bInterrupts = m_DIPSWDefault.bInterrupts;
}
UINT CSuperSerialCard::BaudRateToIndex(UINT uBaudRate)
{
switch (uBaudRate)
{
case CBR_110: return 0x05;
case CBR_300: return 0x06;
case CBR_600: return 0x07;
case CBR_1200: return 0x08;
case CBR_2400: return 0x0A;
case CBR_4800: return 0x0C;
case CBR_9600: return 0x0E;
case CBR_19200: return 0x0F;
case CBR_115200: return 0x00;
}
_ASSERT(0);
LogFileOutput("SSC: BaudRateToIndex(): unsupported rate: %d\n", uBaudRate);
return BaudRateToIndex(m_kDefaultBaudRate); // nominally use AppleWin default
}
//===========================================================================
void CSuperSerialCard::UpdateCommState()
{
if (m_hCommHandle == INVALID_HANDLE_VALUE)
return;
DCB dcb;
memset(&dcb, 0, sizeof(DCB));
dcb.DCBlength = sizeof(DCB);
GetCommState(m_hCommHandle,&dcb);
dcb.BaudRate = m_uBaudRate;
dcb.ByteSize = m_uByteSize;
dcb.Parity = m_uParity;
dcb.StopBits = m_uStopBits;
// Specifies the DTR (data-terminal-ready) input flow control (use dcb.fOutxCtsFlow for output)
dcb.fDtrControl = m_uDTR; // GH#386
// Specifies the RTS (request-to-send) input flow control (use dcb.fOutxDsrFlow for output)
dcb.fRtsControl = m_uRTS; // GH#311
SetCommState(m_hCommHandle,&dcb);
}
//===========================================================================
bool CSuperSerialCard::CheckComm()
{
// check for COM or TCP socket handle, and setup if invalid
if (IsActive())
return true;
if (m_dwSerialPortItem == m_uTCPChoiceItemIdx)
{
WSADATA wsaData;
if (WSAStartup(MAKEWORD(2, 2), &wsaData) == 0) // Winsock 2.2
{
if (wsaData.wVersion != 0x0202)
{
WSACleanup();
return false;
}
// initialized, so try to create a socket
m_hCommListenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (m_hCommListenSocket == INVALID_SOCKET)
{
WSACleanup();
return false;
}
// have socket so attempt to bind it
SOCKADDR_IN saAddress;
memset(&saAddress, 0, sizeof(SOCKADDR_IN));
saAddress.sin_family = AF_INET;
saAddress.sin_port = htons(TCP_SERIAL_PORT); // TODO: get from registry / GUI
saAddress.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(m_hCommListenSocket, (LPSOCKADDR)&saAddress, sizeof(saAddress)) == SOCKET_ERROR)
{
m_hCommListenSocket = INVALID_SOCKET;
WSACleanup();
return false;
}
// bound, so listen
if (listen(m_hCommListenSocket, 1) == SOCKET_ERROR)
{
m_hCommListenSocket = INVALID_SOCKET;
WSACleanup();
return false;
}
// now send async events to our app's message handler
if (WSAAsyncSelect(
/* SOCKET s */ m_hCommListenSocket,
/* HWND hWnd */ GetFrame().g_hFrameWindow,
/* unsigned int wMsg */ WM_USER_TCP_SERIAL,
/* long lEvent */ (FD_ACCEPT | FD_CONNECT | FD_READ | FD_CLOSE)) != 0)
{
m_hCommListenSocket = INVALID_SOCKET;
WSACleanup();
return false;
}
}
}
else if (m_dwSerialPortItem)
{
_ASSERT(m_dwSerialPortItem < m_vecSerialPortsItems.size()-1); // size()-1 is TCP item
TCHAR portname[SIZEOF_SERIALCHOICE_ITEM];
wsprintf(portname, TEXT("\\\\.\\COM%u"), m_vecSerialPortsItems[m_dwSerialPortItem]);
m_hCommHandle = CreateFile(portname,
GENERIC_READ | GENERIC_WRITE,
0, // exclusive access
(LPSECURITY_ATTRIBUTES)NULL, // default security attributes
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED, // required for WaitCommEvent()
NULL);
if (m_hCommHandle != INVALID_HANDLE_VALUE)
{
GetCommModemStatus(m_hCommHandle, const_cast<DWORD*>(&m_dwModemStatus));
//BOOL bRes = SetupComm(m_hCommHandle, 8192, 8192);
//_ASSERT(bRes);
UpdateCommState();
// ReadIntervalTimeout=MAXDWORD; ReadTotalTimeoutConstant=ReadTotalTimeoutMultiplier=0:
// Read operation is to return immediately with the bytes that have already been received,
// even if no bytes have been received.
COMMTIMEOUTS ct;
memset(&ct, 0, sizeof(COMMTIMEOUTS));
ct.ReadIntervalTimeout = MAXDWORD;
SetCommTimeouts(m_hCommHandle,&ct);
CommThInit();
}
else
{
DWORD uError = GetLastError();
}
}
return IsActive();
}
//===========================================================================
void CSuperSerialCard::CloseComm()
{
CommTcpSerialCleanup(); // Shut down Winsock
CommThUninit(); // Kill CommThread before closing COM handle
if (m_hCommHandle != INVALID_HANDLE_VALUE)
CloseHandle(m_hCommHandle);
m_hCommHandle = INVALID_HANDLE_VALUE;
}
//===========================================================================
void CSuperSerialCard::CommTcpSerialCleanup()
{
if (m_hCommListenSocket != INVALID_SOCKET)
{
WSAAsyncSelect(m_hCommListenSocket, GetFrame().g_hFrameWindow, 0, 0); // Stop event messages
closesocket(m_hCommListenSocket);
m_hCommListenSocket = INVALID_SOCKET;
CommTcpSerialClose();
WSACleanup();
}
}
//===========================================================================
void CSuperSerialCard::CommTcpSerialClose()
{
if (m_hCommAcceptSocket != INVALID_SOCKET)
{
shutdown(m_hCommAcceptSocket, 2 /* SD_BOTH */); // In case the client is waiting for data
closesocket(m_hCommAcceptSocket);
m_hCommAcceptSocket = INVALID_SOCKET;
}
m_qTcpSerialBuffer.clear();
}
//===========================================================================
void CSuperSerialCard::CommTcpSerialAccept()
{
// Valid listener socket and invalid accept socket?
if ((m_hCommListenSocket != INVALID_SOCKET) && (m_hCommAcceptSocket == INVALID_SOCKET))
{
// Y: accept the connection
m_hCommAcceptSocket = accept(m_hCommListenSocket, NULL, NULL);
}
}
//===========================================================================
// Called when there's a TCP event via the message pump
// . Because it's via the message pump, then this call is synchronous to CommReceive(), so there's no need for a critical section
void CSuperSerialCard::CommTcpSerialReceive()
{
if (m_hCommAcceptSocket != INVALID_SOCKET)
{
char Data[0x80];
int nReceived = 0;
while ((nReceived = recv(m_hCommAcceptSocket, Data, sizeof(Data), 0)) > 0)
{
for (int i = 0; i < nReceived; i++)
{
m_qTcpSerialBuffer.push_back(Data[i]);
}
}
if (m_bRxIrqEnabled && !m_qTcpSerialBuffer.empty())
{
CpuIrqAssert(IS_SSC);
m_vbRxIrqPending = true;
}
}
}
//===========================================================================
BYTE __stdcall CSuperSerialCard::SSC_IORead(WORD PC, WORD uAddr, BYTE bWrite, BYTE uValue, ULONG nExecutedCycles)
{
UINT uSlot = ((uAddr & 0xff) >> 4) - 8;
CSuperSerialCard* pSSC = (CSuperSerialCard*) MemGetSlotParameters(uSlot);
switch (uAddr & 0xf)
{
case 0x0: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x1: return pSSC->CommDipSw(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x2: return pSSC->CommDipSw(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x3: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x4: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x5: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x6: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x7: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x8: return pSSC->CommReceive(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x9: return pSSC->CommStatus(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0xA: return pSSC->CommCommand(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0xB: return pSSC->CommControl(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0xC: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0xD: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0xE: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0xF: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
}
return 0;
}
BYTE __stdcall CSuperSerialCard::SSC_IOWrite(WORD PC, WORD uAddr, BYTE bWrite, BYTE uValue, ULONG nExecutedCycles)
{
UINT uSlot = ((uAddr & 0xff) >> 4) - 8;
CSuperSerialCard* pSSC = (CSuperSerialCard*) MemGetSlotParameters(uSlot);
switch (uAddr & 0xf)
{
case 0x0: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x1: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x2: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x3: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x4: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x5: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x6: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x7: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x8: return pSSC->CommTransmit(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0x9: return pSSC->CommProgramReset(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0xA: return pSSC->CommCommand(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0xB: return pSSC->CommControl(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0xC: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0xD: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0xE: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
case 0xF: return IO_Null(PC, uAddr, bWrite, uValue, nExecutedCycles);
}
return 0;
}
//===========================================================================
// 6551 ACIA Command Register ($C08A+s0)
// . EG. 0x09 = "no parity, enable IRQ" [Ref.2] - b7:5(No parity), b4 (No echo), b3:1(Enable TX,RX IRQs), b0(DTR: Enable receiver and all interrupts)
enum { CMD_PARITY_MASK = 3<<6,
CMD_PARITY_ODD = 0<<6, // Odd parity
CMD_PARITY_EVEN = 1<<6, // Even parity
CMD_PARITY_MARK = 2<<6, // Mark parity
CMD_PARITY_SPACE = 3<<6, // Space parity
CMD_PARITY_ENA = 1<<5,
CMD_ECHO_MODE = 1<<4,
CMD_TX_MASK = 3<<2,
CMD_TX_IRQ_DIS_RTS_HIGH = 0<<2,
CMD_TX_IRQ_ENA_RTS_LOW = 1<<2,
CMD_TX_IRQ_DIS_RTS_LOW = 2<<2,
CMD_TX_IRQ_DIS_RTS_LOW_BRK = 3<<2, // Transmit BRK
CMD_RX_IRQ_DIS = 1<<1, // 1=IRQ interrupt disabled
CMD_DTR = 1<<0, // Data Terminal Ready: Enable(1) or disable(0) receiver and all interrupts (!DTR low)
};
BYTE __stdcall CSuperSerialCard::CommProgramReset(WORD, WORD, BYTE, BYTE, ULONG)
{
// Command: top-3 parity bits unaffected
UpdateCommandReg( m_uCommandByte & (CMD_PARITY_MASK|CMD_PARITY_ENA) );
// Control: all bits unaffected
// Status: all bits unaffects, except Overrun(bit2) is cleared
return 0;
}
//===========================================================================
void CSuperSerialCard::UpdateCommandAndControlRegs(BYTE uCommandByte, BYTE uControlByte)
{
// UpdateCommandReg() first to initialise m_uParity, before calling UpdateControlReg()
UpdateCommandReg(uCommandByte);
UpdateControlReg(uControlByte);
}
void CSuperSerialCard::UpdateCommandReg(BYTE command)
{
m_uCommandByte = command;
if (m_uCommandByte & CMD_PARITY_ENA)
{
switch (m_uCommandByte & CMD_PARITY_MASK)
{
case CMD_PARITY_ODD: m_uParity = ODDPARITY; break;
case CMD_PARITY_EVEN: m_uParity = EVENPARITY; break;
case CMD_PARITY_MARK: m_uParity = MARKPARITY; break;
case CMD_PARITY_SPACE: m_uParity = SPACEPARITY; break;
}
}
else
{
m_uParity = NOPARITY;
}
if (m_uCommandByte & CMD_ECHO_MODE) // Receiver mode echo (0=no echo, 1=echo)
{
_ASSERT(0);
LogFileOutput("SSC: CommCommand(): unsupported Echo mode. Command=0x%02X\n", m_uCommandByte);
}
switch (m_uCommandByte & CMD_TX_MASK) // transmitter interrupt control
{
// Note: the RTS signal must be set 'low' in order to receive any incoming data from the serial device [Ref.1]
case CMD_TX_IRQ_DIS_RTS_HIGH: // set RTS high and transmit no interrupts (transmitter is off [Ref.3])
m_uRTS = RTS_CONTROL_DISABLE;
break;
case CMD_TX_IRQ_ENA_RTS_LOW: // set RTS low and transmit interrupts
m_uRTS = RTS_CONTROL_ENABLE;
break;
case CMD_TX_IRQ_DIS_RTS_LOW: // set RTS low and transmit no interrupts
m_uRTS = RTS_CONTROL_ENABLE;
break;
case CMD_TX_IRQ_DIS_RTS_LOW_BRK: // set RTS low and transmit break signals instead of interrupts
m_uRTS = RTS_CONTROL_ENABLE;
_ASSERT(0);
LogFileOutput("SSC: CommCommand(): unsupported TX mode. Command=0x%02X\n", m_uCommandByte);
break;
}
if (m_DIPSWCurrent.bInterrupts && m_uCommandByte & CMD_DTR)
{
// Assume enabling Rx IRQ if STATUS.ST_RX_FULL *does not* trigger an IRQ
// . EG. Disable Rx IRQ, receive a byte (don't read STATUS or RX_DATA register), enable Rx IRQ
// Assume enabling Tx IRQ if STATUS.ST_TX_EMPTY *does not* trigger an IRQ
// . otherwise there'd be a "false" TX Empty IRQ even if nothing had ever been transferred!
m_bTxIrqEnabled = (m_uCommandByte & CMD_TX_MASK) == CMD_TX_IRQ_ENA_RTS_LOW;
m_bRxIrqEnabled = (m_uCommandByte & CMD_RX_IRQ_DIS) == 0;
}
else
{
m_bTxIrqEnabled = false;
m_bRxIrqEnabled = false;
}
// 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)
{
if (!CheckComm())
return 0;
if (write && (value != m_uCommandByte))
{
UpdateCommandReg(value);
UpdateCommState();
}
return m_uCommandByte;
}
//===========================================================================
void CSuperSerialCard::UpdateControlReg(BYTE control)
{
m_uControlByte = control;
// UPDATE THE BAUD RATE
switch (m_uControlByte & 0x0F)
{
// Note that 1 MHz Apples (everything other than the Apple IIgs and //c
// Plus running in "fast" mode) cannot handle 19.2 kbps, and even 9600
// bps on these machines requires either some highly optimised code or
// a decent buffer in the device being accessed. The faster Apples
// have no difficulty with this speed, however. [Ref.1]
case 0x00: m_uBaudRate = CBR_115200; break; // Internal clk: undoc'd 115.2K (or 16x external clock)
case 0x01: // fall through [50 bps]
case 0x02: // fall through [75 bps]
case 0x03: // fall through [109.92 bps]
case 0x04: // fall through [134.58 bps]
case 0x05: m_uBaudRate = CBR_110; break; // [150 bps]
case 0x06: m_uBaudRate = CBR_300; break;
case 0x07: m_uBaudRate = CBR_600; break;
case 0x08: m_uBaudRate = CBR_1200; break;
case 0x09: // fall through [1800 bps]
case 0x0A: m_uBaudRate = CBR_2400; break;
case 0x0B: // fall through [3600 bps]
case 0x0C: m_uBaudRate = CBR_4800; break;
case 0x0D: // fall through [7200 bps]
case 0x0E: m_uBaudRate = CBR_9600; break;
case 0x0F: m_uBaudRate = CBR_19200; break;
}
if (m_uControlByte & 0x10)
{
// receiver clock source [0= external, 1= internal]
}
// UPDATE THE BYTE SIZE
switch (m_uControlByte & 0x60)
{
case 0x00: m_uByteSize = 8; break;
case 0x20: m_uByteSize = 7; break;
case 0x40: m_uByteSize = 6; break;
case 0x60: m_uByteSize = 5; break;
}
// UPDATE THE NUMBER OF STOP BITS
if (m_uControlByte & 0x80)
{
if ((m_uByteSize == 8) && (m_uParity != NOPARITY))
m_uStopBits = ONESTOPBIT;
else if ((m_uByteSize == 5) && (m_uParity == NOPARITY))
m_uStopBits = ONE5STOPBITS;
else
m_uStopBits = TWOSTOPBITS;
}
else
{
m_uStopBits = ONESTOPBIT;
}
}
BYTE __stdcall CSuperSerialCard::CommControl(WORD, WORD, BYTE write, BYTE value, ULONG)
{
if (!CheckComm())
return 0;
if (write && (value != m_uControlByte))
{
UpdateControlReg(value);
UpdateCommState();
}
return m_uControlByte;
}
//===========================================================================
BYTE __stdcall CSuperSerialCard::CommReceive(WORD, WORD, BYTE, BYTE, ULONG)
{
if (!CheckComm())
return 0;
BYTE result = 0;
if (!m_qTcpSerialBuffer.empty())
{
// NB. See CommTcpSerialReceive() above, for a note explaining why there's no need for a critical section here
// If receiver is disabled then transmitting device should not send data
// . For COM serial connection this is handled by DTR/DTS flow-control (which enables the receiver)
if ((m_uCommandByte & CMD_DTR) == 0) // Receiver disable, so prevent receiving data
return 0;
result = m_qTcpSerialBuffer.front();
m_qTcpSerialBuffer.pop_front();
if (m_bRxIrqEnabled && !m_qTcpSerialBuffer.empty())
{
CpuIrqAssert(IS_SSC);
m_vbRxIrqPending = true;
}
}
else if (m_hCommHandle != INVALID_HANDLE_VALUE)
{
EnterCriticalSection(&m_CriticalSection);
{
const UINT uCOMIdx = m_vuRxCurrBuffer;
const UINT uSSCIdx = uCOMIdx ^ 1;
if (!m_qComSerialBuffer[uSSCIdx].empty())
{
result = m_qComSerialBuffer[uSSCIdx].front();
m_qComSerialBuffer[uSSCIdx].pop_front();
UINT uNewSSCIdx = uSSCIdx;
if ( m_qComSerialBuffer[uSSCIdx].empty() && // Current SSC buffer is empty
!m_qComSerialBuffer[uCOMIdx].empty() ) // Current COM buffer has data
{
m_vuRxCurrBuffer = uSSCIdx; // Flip buffers
uNewSSCIdx = uCOMIdx;
}
if (m_bRxIrqEnabled && !m_qComSerialBuffer[uNewSSCIdx].empty())
{
CpuIrqAssert(IS_SSC);
m_vbRxIrqPending = true;
}
}
}
LeaveCriticalSection(&m_CriticalSection);
}
return result;
}
//===========================================================================
void CSuperSerialCard::TransmitDone(void)
{
if (m_hCommHandle != INVALID_HANDLE_VALUE)
{
// Use CriticalSection to ensure that write to m_vbTxEmpty is atomic w.r.t CommTransmit() (GH#707)
EnterCriticalSection(&m_CriticalSection);
_ASSERT(m_vbTxEmpty == false);
m_vbTxEmpty = true; // Transmit done (COM)
LeaveCriticalSection(&m_CriticalSection);
}
else
{
_ASSERT(m_vbTxEmpty == false);
m_vbTxEmpty = true; // Transmit done (TCP)
}
if (m_bTxIrqEnabled) // GH#522
{
CpuIrqAssert(IS_SSC);
m_vbTxIrqPending = true;
}
}
BYTE __stdcall CSuperSerialCard::CommTransmit(WORD, WORD, BYTE, BYTE value, ULONG)
{
if (!CheckComm())
return 0;
// If transmitter is disabled then: Is data just discarded or does it get transmitted if transmitter is later enabled?
if ((m_uCommandByte & CMD_TX_MASK) == CMD_TX_IRQ_DIS_RTS_HIGH) // Transmitter disable, so just discard for now
return 0;
if (m_hCommAcceptSocket != INVALID_SOCKET)
{
BYTE data = value;
if (m_uByteSize < 8)
{
data &= ~(1 << m_uByteSize);
}
int sent = send(m_hCommAcceptSocket, (const char*)&data, 1, 0);
_ASSERT(sent == 1);
if (sent == 1)
{
m_vbTxEmpty = false;
// Assume that send() completes immediately
TransmitDone();
}
}
else if (m_hCommHandle != INVALID_HANDLE_VALUE)
{
BOOL res = false;
DWORD error = 0;
// Use CriticalSection to keep WriteFile() & m_vbTxEmpty in sync (GH#707)
EnterCriticalSection(&m_CriticalSection);
_ASSERT(m_vbTxEmpty == true);
DWORD uBytesWritten;
res = WriteFile(m_hCommHandle, &value, 1, &uBytesWritten, &m_o);
_ASSERT(res);
if (res)
{
m_vbTxEmpty = false;
// NB. Now CommThread() determines when transmit buffer is empty and calls TransmitDone()
}
else
{
error = GetLastError();
}
LeaveCriticalSection(&m_CriticalSection);
if (!res)
LogFileOutput("SSC: CommTransmit(): WriteFile() failed: 0x%08X\n", error);
}
return 0;
}
//===========================================================================
// 6551 ACIA Status Register ($C089+s0)
// ------------------------------------
// Bit Value Meaning
// 7 1 Interrupt (IRQ) true (cleared by reading status reg [Ref.3])
// 6 0 Data Set Ready (DSR) true [0=DSR low (ready), 1=DSR high (not ready)]
// 5 0 Data Carrier Detect (DCD) true [0=DCD low (detected), 1=DCD high (not detected)]
// 4 1 Transmit register empty
// 3 1 Receive register full
// 2 1 Overrun error
// 1 1 Framing error
// 0 1 Parity error
enum { ST_IRQ = 1<<7,
ST_DSR = 1<<6,
ST_DCD = 1<<5,
ST_TX_EMPTY = 1<<4,
ST_RX_FULL = 1<<3,
ST_OVERRUN_ERR = 1<<2,
ST_FRAMING_ERR = 1<<1,
ST_PARITY_ERR = 1<<0,
};
BYTE __stdcall CSuperSerialCard::CommStatus(WORD, WORD, BYTE, BYTE, ULONG)
{
if (!CheckComm())
return ST_DSR | ST_DCD | ST_TX_EMPTY;
DWORD modemStatus = m_kDefaultModemStatus;
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)
{
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;
}
//
bool bComSerialBufferEmpty = true; // Assume true, so if using TCP then logic below works
if (m_hCommHandle != INVALID_HANDLE_VALUE)
{
EnterCriticalSection(&m_CriticalSection);
const UINT uSSCIdx = m_vuRxCurrBuffer ^ 1;
bComSerialBufferEmpty = m_qComSerialBuffer[uSSCIdx].empty();
}
BYTE IRQ = 0;
if (m_bTxIrqEnabled)
{
IRQ |= m_vbTxIrqPending ? ST_IRQ : 0;
m_vbTxIrqPending = false; // Ensure 2 reads of STATUS reg only return ST_IRQ for first read
}
if (m_bRxIrqEnabled)
{
IRQ |= m_vbRxIrqPending ? ST_IRQ : 0;
m_vbRxIrqPending = false; // Ensure 2 reads of STATUS reg only return ST_IRQ for first read
}
//
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)
//
BYTE TX_EMPTY = m_vbTxEmpty ? ST_TX_EMPTY : 0;
BYTE RX_FULL = (!bComSerialBufferEmpty || !m_qTcpSerialBuffer.empty()) ? ST_RX_FULL : 0;
//
BYTE uStatus =
IRQ
| DSR
| DCD
| TX_EMPTY
| RX_FULL;
if (m_hCommHandle != INVALID_HANDLE_VALUE)
{
LeaveCriticalSection(&m_CriticalSection);
}
CpuIrqDeassert(IS_SSC); // Read status reg always clears IRQ
return uStatus;
}
//===========================================================================
// NB. Some DIPSW settings can't be read:
// SSC-47: Three switches are not connected to the LS365s:
// . SW2-6: passes interrupt requests from ACIA to the Apple II
// . SW1-7 ON and SW2-7 OFF: connects DCD to the DCD input of the ACIA
// . SW1-7 OFF and SW2-7 ON: splices SCTS to the DCD input of the ACIA (when jumper is in TERMINAL position)
BYTE __stdcall CSuperSerialCard::CommDipSw(WORD, WORD addr, BYTE, BYTE, ULONG)
{
BYTE sw = 0;
switch (addr & 0xf)
{
case 1: // DIPSW1
sw = (BaudRateToIndex(m_DIPSWCurrent.uBaudRate)<<4) | m_DIPSWCurrent.eFirmwareMode;
break;
case 2: // DIPSW2
// Comms mode: SSC-23
BYTE SW2_1 = m_DIPSWCurrent.uStopBits == TWOSTOPBITS ? 1 : 0; // SW2-1 (Stop bits: 1-ON(0); 2-OFF(1))
BYTE SW2_2 = m_DIPSWCurrent.uByteSize == 7 ? 1 : 0; // SW2-2 (Data bits: 8-ON(0); 7-OFF(1))
// SW2-3 (Parity: odd-ON(0); even-OFF(1))
// SW2-4 (Parity: none-ON(0); SW2-3 don't care)
BYTE SW2_3,SW2_4;
switch (m_DIPSWCurrent.uParity)
{
case ODDPARITY:
SW2_3 = 0; SW2_4 = 1;
break;
case EVENPARITY:
SW2_3 = 1; SW2_4 = 1;
break;
default:
_ASSERT(0);
// fall through...
case NOPARITY:
SW2_3 = 0; SW2_4 = 0;
break;
}
BYTE SW2_5 = m_DIPSWCurrent.bLinefeed ? 0 : 1; // SW2-5 (LF: yes-ON(0); no-OFF(1))
BYTE CTS = 1; // Default to CTS being false. (Support CTS in DIPSW: GH#311)
if (CheckComm() && m_hCommHandle != INVALID_HANDLE_VALUE)
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
0<<6 | // b6 : -
SW2_2<<5 | // b5 : SW2-2
0<<4 | // b4 : -
SW2_3<<3 | // b3 : SW2-3
SW2_4<<2 | // b2 : SW2-4
SW2_5<<1 | // b1 : SW2-5
CTS<<0; // b0 : CTS
break;
}
return sw;
}
//===========================================================================
void CSuperSerialCard::CommInitialize(LPBYTE pCxRomPeripheral, UINT uSlot)
{
const UINT SSC_FW_SIZE = 2*1024;
const UINT SSC_SLOT_FW_SIZE = 256;
const UINT SSC_SLOT_FW_OFFSET = 7*256;
HRSRC hResInfo = FindResource(NULL, MAKEINTRESOURCE(IDR_SSC_FW), "FIRMWARE");
if(hResInfo == NULL)
return;
DWORD dwResSize = SizeofResource(NULL, hResInfo);
if(dwResSize != SSC_FW_SIZE)
return;
HGLOBAL hResData = LoadResource(NULL, hResInfo);
if(hResData == NULL)
return;
BYTE* pData = (BYTE*) LockResource(hResData); // NB. Don't need to unlock resource
if(pData == NULL)
return;
_ASSERT(m_uSlot == uSlot);
memcpy(pCxRomPeripheral + uSlot*256, pData+SSC_SLOT_FW_OFFSET, SSC_SLOT_FW_SIZE);
// Expansion ROM
if (m_pExpansionRom == NULL)
{
m_pExpansionRom = new BYTE [SSC_FW_SIZE];
if (m_pExpansionRom)
memcpy(m_pExpansionRom, pData, SSC_FW_SIZE);
}
//
RegisterIoHandler(uSlot, &CSuperSerialCard::SSC_IORead, &CSuperSerialCard::SSC_IOWrite, NULL, NULL, this, m_pExpansionRom);
}
//===========================================================================
void CSuperSerialCard::CommReset()
{
CloseComm();
InternalReset();
}
//===========================================================================
void CSuperSerialCard::CommDestroy()
{
CommReset();
delete [] m_pExpansionRom;
m_pExpansionRom = NULL;
}
//===========================================================================
// dwNewSerialPortItem is the drop-down list item
void CSuperSerialCard::CommSetSerialPort(HWND hWindow, DWORD dwNewSerialPortItem)
{
if (m_dwSerialPortItem == dwNewSerialPortItem)
return;
_ASSERT(!IsActive());
if (IsActive())
return;
m_dwSerialPortItem = dwNewSerialPortItem;
if (m_dwSerialPortItem == m_uTCPChoiceItemIdx)
m_ayCurrentSerialPortName = TEXT_SERIAL_TCP;
else if (m_dwSerialPortItem != 0) {
TCHAR temp[SIZEOF_SERIALCHOICE_ITEM];
sprintf(temp, TEXT_SERIAL_COM"%d", m_vecSerialPortsItems[m_dwSerialPortItem]);
m_ayCurrentSerialPortName = temp;
}
else
m_ayCurrentSerialPortName.clear(); // "None"
}
//===========================================================================
// Had this error when sizeof(m_RecvBuffer)==1 was used
// UPDATE: Fixed by using double-buffered queue
//
// ERROR_OPERATION_ABORTED: CE_RXOVER
//
// Config:
// . DOS Box (laptop) -> ZLink (PC)
// . Baud = 300/4800/9600/19200
// . InQueue size = 0x1000
// . AppleII speed = 1MHz/2MHz/Unthrottled
// . TYPE AW-PascalCrash.txt >COM7
// . NB. AW-PascalCrash.txt is 10020 bytes
//
// Error:
// . Always get ERROR_OPERATION_ABORTED after reading 0x555 total bytes
// . dwErrors = 1 (CE_RXOVER)
// . COMSTAT::InQueue = 0x1000
//
void CSuperSerialCard::CheckCommEvent(DWORD dwEvtMask)
{
if (dwEvtMask & EV_RXCHAR)
{
char Data[0x80];
DWORD dwReceived = 0;
bool bGotData = false;
// Read COM buffer until empty
// NB. Potentially dangerous, as Apple read rate might be too slow, so could run out of memory on PC!
do
{
if (!ReadFile(m_hCommHandle, Data, sizeof(Data), &dwReceived, &m_o) || !dwReceived)
break;
bGotData = true;
EnterCriticalSection(&m_CriticalSection);
{
const UINT uCOMIdx = m_vuRxCurrBuffer;
for (DWORD i = 0; i < dwReceived; i++)
m_qComSerialBuffer[uCOMIdx].push_back(Data[i]);
}
LeaveCriticalSection(&m_CriticalSection);
}
while(sizeof(Data) == dwReceived);
//
if (bGotData)
{
EnterCriticalSection(&m_CriticalSection);
{
// NB. m_vuRxCurrBuffer may've changed since ReadFile() above -- can change in CommReceive()
// - Maybe buffers have already been flipped
const UINT uCOMIdx = m_vuRxCurrBuffer;
const UINT uSSCIdx = uCOMIdx ^ 1;
if ( m_qComSerialBuffer[uSSCIdx].empty() && // Current SSC buffer is empty
!m_qComSerialBuffer[uCOMIdx].empty() ) // Current COM buffer has data
{
m_vuRxCurrBuffer = uSSCIdx; // Flip buffers
if (m_bRxIrqEnabled)
{
CpuIrqAssert(IS_SSC);
m_vbRxIrqPending = true;
}
}
}
LeaveCriticalSection(&m_CriticalSection);
}
}
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)
{
CSuperSerialCard* pSSC = (CSuperSerialCard*) lpParameter;
char szDbg[100];
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");
LogOutput("%s", szDbg);
LogFileOutput("%s", szDbg);
return -1;
}
//
const UINT nNumEvents = 2;
HANDLE hCommEvent_Wait[nNumEvents] = {pSSC->m_hCommEvent[COMMEVT_WAIT], pSSC->m_hCommEvent[COMMEVT_TERM]};
while(1)
{
DWORD dwEvtMask = 0;
DWORD dwWaitResult;
bRes = WaitCommEvent(pSSC->m_hCommHandle, &dwEvtMask, &pSSC->m_o); // Will return immediately (probably with ERROR_IO_PENDING)
if (!bRes)
{
DWORD dwRet = GetLastError();
_ASSERT(dwRet == ERROR_IO_PENDING);
if (dwRet != ERROR_IO_PENDING)
{
// Probably: ERROR_OPERATION_ABORTED
DWORD dwErrors;
COMSTAT Stat;
ClearCommError(pSSC->m_hCommHandle, &dwErrors, &Stat);
if (dwErrors & CE_RXOVER)
sprintf(szDbg, "SSC: CommThread(): LastError=0x%08X, CommError=CE_RXOVER (0x%08X): InQueue=0x%08X\n", dwRet, dwErrors, Stat.cbInQue);
else
sprintf(szDbg, "SSC: CommThread(): LastError=0x%08X, CommError=Other (0x%08X): InQueue=0x%08X, OutQueue=0x%08X\n", dwRet, dwErrors, Stat.cbInQue, Stat.cbOutQue);
LogOutput("%s", szDbg);
LogFileOutput("%s", szDbg);
return -1;
}
//
// Wait for comm event
//
while(1)
{
//OutputDebugString("CommThread: Wait1\n");
dwWaitResult = WaitForMultipleObjects(
nNumEvents, // number of handles in array
hCommEvent_Wait, // array of event handles
FALSE, // wait until any one is signaled
INFINITE);
// On very 1st wait *only*: get a false signal (when not running via debugger)
if ((dwWaitResult == WAIT_OBJECT_0) && (dwEvtMask == 0))
continue;
if ((dwWaitResult >= WAIT_OBJECT_0) && (dwWaitResult <= WAIT_OBJECT_0+nNumEvents-1))
break;
}
dwWaitResult -= WAIT_OBJECT_0; // Determine event # that signaled
//sprintf(szDbg, "CommThread: GotEvent1: %d\n", dwWaitResult); OutputDebugString(szDbg);
if (dwWaitResult == (nNumEvents-1))
break; // Termination event
}
// Comm event
pSSC->CheckCommEvent(dwEvtMask);
}
return 0;
}
bool CSuperSerialCard::CommThInit()
{
_ASSERT(m_hCommThread == NULL);
_ASSERT(m_hCommHandle);
if ((m_hCommEvent[0] == NULL) && (m_hCommEvent[1] == NULL) && (m_hCommEvent[2] == NULL))
{
// Create an event object for use by WaitCommEvent
m_o.hEvent = CreateEvent(
NULL, // default security attributes
FALSE, // auto reset event (bManualReset)
FALSE, // not signaled (bInitialState)
NULL // no name
);
// Initialize the rest of the OVERLAPPED structure to zero
m_o.Internal = 0;
m_o.InternalHigh = 0;
m_o.Offset = 0;
m_o.OffsetHigh = 0;
//
m_hCommEvent[COMMEVT_WAIT] = m_o.hEvent;
m_hCommEvent[COMMEVT_ACK] = CreateEvent(NULL, // lpEventAttributes
FALSE, // bManualReset (FALSE = auto-reset)
FALSE, // bInitialState (FALSE = non-signaled)
NULL); // lpName
m_hCommEvent[COMMEVT_TERM] = CreateEvent(NULL, // lpEventAttributes
FALSE, // bManualReset (FALSE = auto-reset)
FALSE, // bInitialState (FALSE = non-signaled)
NULL); // lpName
if ((m_hCommEvent[0] == NULL) || (m_hCommEvent[1] == NULL) || (m_hCommEvent[2] == NULL))
{
if(g_fh) fprintf(g_fh, "Comm: CreateEvent failed\n");
return false;
}
}
//
if (m_hCommThread == NULL)
{
InitializeCriticalSection(&m_CriticalSection);
DWORD dwThreadId;
m_hCommThread = CreateThread(NULL, // lpThreadAttributes
0, // dwStackSize
(LPTHREAD_START_ROUTINE) &CSuperSerialCard::CommThread,
this, // lpParameter
0, // dwCreationFlags : 0 = Run immediately
&dwThreadId); // lpThreadId
SetThreadPriority(m_hCommThread, THREAD_PRIORITY_TIME_CRITICAL);
}
return true;
}
void CSuperSerialCard::CommThUninit()
{
if (m_hCommThread)
{
SetEvent(m_hCommEvent[COMMEVT_TERM]); // Signal to thread that it should exit
do
{
DWORD dwExitCode;
if(GetExitCodeThread(m_hCommThread, &dwExitCode))
{
if(dwExitCode == STILL_ACTIVE)
Sleep(10);
else
break;
}
}
while(1);
CloseHandle(m_hCommThread);
m_hCommThread = NULL;
DeleteCriticalSection(&m_CriticalSection);
}
//
for (UINT i=0; i<COMMEVT_MAX; i++)
{
if(m_hCommEvent[i])
{
CloseHandle(m_hCommEvent[i]);
m_hCommEvent[i] = NULL;
}
}
}
//===========================================================================
void CSuperSerialCard::ScanCOMPorts()
{
m_vecSerialPortsItems.clear();
m_vecSerialPortsItems.push_back(SERIALPORTITEM_INVALID_COM_PORT); // "None"
for (UINT i=1; i<32; i++) // Arbitrary upper limit
{
TCHAR portname[SIZEOF_SERIALCHOICE_ITEM];
wsprintf(portname, TEXT("\\\\.\\COM%u"), i);
HANDLE hCommHandle = CreateFile(portname,
GENERIC_READ | GENERIC_WRITE,
0, // exclusive access
(LPSECURITY_ATTRIBUTES)NULL, // default security attributes
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED, // required for WaitCommEvent()
NULL);
if (hCommHandle != INVALID_HANDLE_VALUE)
{
CloseHandle(hCommHandle);
m_vecSerialPortsItems.push_back(i);
}
}
//
m_vecSerialPortsItems.push_back(SERIALPORTITEM_INVALID_COM_PORT); // "TCP"
m_uTCPChoiceItemIdx = m_vecSerialPortsItems.size()-1;
}
char* CSuperSerialCard::GetSerialPortChoices()
{
if (IsActive())
return m_aySerialPortChoices;
//
ScanCOMPorts(); // Do this every time in case news ones available (eg. for USB COM ports)
delete [] m_aySerialPortChoices;
m_aySerialPortChoices = new TCHAR [ GetNumSerialPortChoices() * SIZEOF_SERIALCHOICE_ITEM + 1 ]; // +1 for final NULL item
TCHAR* pNextSerialChoice = m_aySerialPortChoices;
//
pNextSerialChoice += wsprintf(pNextSerialChoice, TEXT("None"));
pNextSerialChoice++; // Skip NULL char
for (UINT i=1; i<m_uTCPChoiceItemIdx; i++)
{
pNextSerialChoice += wsprintf(pNextSerialChoice, TEXT("COM%u"), m_vecSerialPortsItems[i]);
pNextSerialChoice++; // Skip NULL char
}
pNextSerialChoice += wsprintf(pNextSerialChoice, TEXT("TCP"));
pNextSerialChoice++; // Skip NULL char
*pNextSerialChoice = 0;
//
return m_aySerialPortChoices;
}
// Called by LoadConfiguration()
void CSuperSerialCard::SetSerialPortName(const char* pSerialPortName)
{
m_ayCurrentSerialPortName = pSerialPortName;
// Init m_aySerialPortChoices, so that we have choices to show if serial is active when we 1st open Config dialog
GetSerialPortChoices();
if (strncmp(TEXT_SERIAL_COM, pSerialPortName, sizeof(TEXT_SERIAL_COM)-1) == 0)
{
const char* p = &pSerialPortName[ sizeof(TEXT_SERIAL_COM)-1 ];
const int nCOMPort = atoi(p);
m_dwSerialPortItem = 0;
for (UINT i=0; i<m_vecSerialPortsItems.size(); i++)
{
if (m_vecSerialPortsItems[i] == nCOMPort)
{
m_dwSerialPortItem = i;
break;
}
}
//_ASSERT(m_dwSerialPortItem); // EG. Switched a USB COM port from COM7 to COM8 between AppleWin sessions
if (m_dwSerialPortItem >= GetNumSerialPortChoices())
{
_ASSERT(0);
m_dwSerialPortItem = 0;
}
}
else if (strncmp(TEXT_SERIAL_TCP, pSerialPortName, sizeof(TEXT_SERIAL_TCP)-1) == 0)
{
m_dwSerialPortItem = m_uTCPChoiceItemIdx;
}
else
{
m_ayCurrentSerialPortName.clear(); // "None"
m_dwSerialPortItem = 0;
}
}
//===========================================================================
// Unit version history:
// 2: Added: Support DCD flag
// Removed: redundant data (encapsulated in Command & Control bytes)
static const UINT kUNIT_VERSION = 2;
#define SS_YAML_VALUE_CARD_SSC "Super Serial Card"
#define SS_YAML_KEY_DIPSWDEFAULT "DIPSW Default"
#define SS_YAML_KEY_DIPSWCURRENT "DIPSW Current"
#define SS_YAML_KEY_BAUDRATE "Baud Rate"
#define SS_YAML_KEY_FWMODE "Firmware mode"
#define SS_YAML_KEY_STOPBITS "Stop Bits"
#define SS_YAML_KEY_BYTESIZE "Byte Size"
#define SS_YAML_KEY_PARITY "Parity"
#define SS_YAML_KEY_LINEFEED "Linefeed"
#define SS_YAML_KEY_INTERRUPTS "Interrupts"
#define SS_YAML_KEY_CONTROL "Control Byte"
#define SS_YAML_KEY_COMMAND "Command Byte"
#define SS_YAML_KEY_INACTIVITY "Comm Inactivity"
#define SS_YAML_KEY_TXIRQENABLED "TX IRQ Enabled"
#define SS_YAML_KEY_RXIRQENABLED "RX IRQ Enabled"
#define SS_YAML_KEY_TXIRQPENDING "TX IRQ Pending"
#define SS_YAML_KEY_RXIRQPENDING "RX IRQ Pending"
#define SS_YAML_KEY_WRITTENTX "Written TX"
#define SS_YAML_KEY_SERIALPORTNAME "Serial Port Name"
#define SS_YAML_KEY_SUPPORT_DCD "Support DCD"
std::string CSuperSerialCard::GetSnapshotCardName(void)
{
static const std::string name(SS_YAML_VALUE_CARD_SSC);
return name;
}
void CSuperSerialCard::SaveSnapshotDIPSW(YamlSaveHelper& yamlSaveHelper, std::string key, SSC_DIPSW& dipsw)
{
YamlSaveHelper::Label label(yamlSaveHelper, "%s:\n", key.c_str());
yamlSaveHelper.SaveUint(SS_YAML_KEY_BAUDRATE, dipsw.uBaudRate);
yamlSaveHelper.SaveUint(SS_YAML_KEY_FWMODE, dipsw.eFirmwareMode);
yamlSaveHelper.SaveUint(SS_YAML_KEY_STOPBITS, dipsw.uStopBits);
yamlSaveHelper.SaveUint(SS_YAML_KEY_BYTESIZE, dipsw.uByteSize);
yamlSaveHelper.SaveUint(SS_YAML_KEY_PARITY, dipsw.uParity);
yamlSaveHelper.SaveBool(SS_YAML_KEY_LINEFEED, dipsw.bLinefeed);
yamlSaveHelper.SaveBool(SS_YAML_KEY_INTERRUPTS, dipsw.bInterrupts);
}
void CSuperSerialCard::SaveSnapshot(YamlSaveHelper& yamlSaveHelper)
{
YamlSaveHelper::Slot slot(yamlSaveHelper, GetSnapshotCardName(), m_uSlot, kUNIT_VERSION);
YamlSaveHelper::Label unit(yamlSaveHelper, "%s:\n", SS_YAML_KEY_STATE);
SaveSnapshotDIPSW(yamlSaveHelper, SS_YAML_KEY_DIPSWDEFAULT, m_DIPSWDefault);
SaveSnapshotDIPSW(yamlSaveHelper, SS_YAML_KEY_DIPSWCURRENT, m_DIPSWCurrent);
yamlSaveHelper.SaveHexUint8(SS_YAML_KEY_CONTROL, m_uControlByte);
yamlSaveHelper.SaveHexUint8(SS_YAML_KEY_COMMAND, m_uCommandByte);
yamlSaveHelper.SaveBool(SS_YAML_KEY_TXIRQPENDING, m_vbTxIrqPending);
yamlSaveHelper.SaveBool(SS_YAML_KEY_RXIRQPENDING, m_vbRxIrqPending);
yamlSaveHelper.SaveBool(SS_YAML_KEY_WRITTENTX, m_vbTxEmpty);
yamlSaveHelper.SaveBool(SS_YAML_KEY_SUPPORT_DCD, m_bCfgSupportDCD);
yamlSaveHelper.SaveString(SS_YAML_KEY_SERIALPORTNAME, GetSerialPortName());
}
void CSuperSerialCard::LoadSnapshotDIPSW(YamlLoadHelper& yamlLoadHelper, std::string key, SSC_DIPSW& dipsw)
{
if (!yamlLoadHelper.GetSubMap(key))
throw std::string("Card: Expected key: " + key);
dipsw.uBaudRate = yamlLoadHelper.LoadUint(SS_YAML_KEY_BAUDRATE);
dipsw.eFirmwareMode = (eFWMODE) yamlLoadHelper.LoadUint(SS_YAML_KEY_FWMODE);
dipsw.uStopBits = yamlLoadHelper.LoadUint(SS_YAML_KEY_STOPBITS);
dipsw.uByteSize = yamlLoadHelper.LoadUint(SS_YAML_KEY_BYTESIZE);
dipsw.uParity = yamlLoadHelper.LoadUint(SS_YAML_KEY_PARITY);
dipsw.bLinefeed = yamlLoadHelper.LoadBool(SS_YAML_KEY_LINEFEED);
dipsw.bInterrupts = yamlLoadHelper.LoadBool(SS_YAML_KEY_INTERRUPTS);
yamlLoadHelper.PopMap();
}
bool CSuperSerialCard::LoadSnapshot(YamlLoadHelper& yamlLoadHelper, UINT slot, UINT version)
{
if (slot != 2) // fixme
throw std::string("Card: wrong slot");
if (version < 1 || version > kUNIT_VERSION)
throw std::string("Card: wrong version");
LoadSnapshotDIPSW(yamlLoadHelper, SS_YAML_KEY_DIPSWDEFAULT, m_DIPSWDefault);
LoadSnapshotDIPSW(yamlLoadHelper, SS_YAML_KEY_DIPSWCURRENT, m_DIPSWCurrent);
if (version == 1) // Consume redundant/obsolete data
{
yamlLoadHelper.LoadUint(SS_YAML_KEY_PARITY); // Redundant: derived from uCommandByte in UpdateCommandReg()
yamlLoadHelper.LoadBool(SS_YAML_KEY_TXIRQENABLED); // Redundant: derived from uCommandByte in UpdateCommandReg()
yamlLoadHelper.LoadBool(SS_YAML_KEY_RXIRQENABLED); // Redundant: derived from uCommandByte in UpdateCommandReg()
yamlLoadHelper.LoadUint(SS_YAML_KEY_BAUDRATE); // Redundant: derived from uControlByte in UpdateControlReg()
yamlLoadHelper.LoadUint(SS_YAML_KEY_STOPBITS); // Redundant: derived from uControlByte in UpdateControlReg()
yamlLoadHelper.LoadUint(SS_YAML_KEY_BYTESIZE); // Redundant: derived from uControlByte in UpdateControlReg()
yamlLoadHelper.LoadUint(SS_YAML_KEY_INACTIVITY); // Obsolete (so just consume)
}
else if (version >= 2)
{
SupportDCD( yamlLoadHelper.LoadBool(SS_YAML_KEY_SUPPORT_DCD) );
}
UINT uCommandByte = yamlLoadHelper.LoadUint(SS_YAML_KEY_COMMAND);
UINT uControlByte = yamlLoadHelper.LoadUint(SS_YAML_KEY_CONTROL);
UpdateCommandAndControlRegs(uCommandByte, uControlByte);
m_vbTxIrqPending = yamlLoadHelper.LoadBool(SS_YAML_KEY_TXIRQPENDING);
m_vbRxIrqPending = yamlLoadHelper.LoadBool(SS_YAML_KEY_RXIRQPENDING);
m_vbTxEmpty = yamlLoadHelper.LoadBool(SS_YAML_KEY_WRITTENTX);
if (m_vbTxIrqPending || m_vbRxIrqPending) // GH#677
CpuIrqAssert(IS_SSC);
std::string serialPortName = yamlLoadHelper.LoadString(SS_YAML_KEY_SERIALPORTNAME);
SetSerialPortName(serialPortName.c_str());
return true;
}
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