mirror of
https://github.com/AppleWin/AppleWin.git
synced 2024-09-07 00:54:25 +00:00
Added SetThreadPriority(THREAD_PRIORITY_TIME_CRITICAL) after creating serial comm thread Minor update to History.txt
1131 lines
30 KiB
C++
1131 lines
30 KiB
C++
/*
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AppleWin : An Apple //e emulator for Windows
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Copyright (C) 1994-1996, Michael O'Brien
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Copyright (C) 1999-2001, Oliver Schmidt
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Copyright (C) 2002-2005, Tom Charlesworth
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Copyright (C) 2006-2007, Tom Charlesworth, Michael Pohoreski
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AppleWin is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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AppleWin is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with AppleWin; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* Description: Super Serial Card emulation
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*
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* Author: Various
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*/
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// TO DO:
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// . Enable & test Tx IRQ
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// . DIP switch read values
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//
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// Refs:
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// (1) "Super Serial Card (SSC) Memory Locations for Programmers" - Aaron Heiss
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// (2) SSC recv IRQ example: http://www.wright.edu/~john.matthews/ssc.html#lst - John B. Matthews, 5/13/87
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// (3) WaitCommEvent, etc: http://mail.python.org/pipermail/python-list/2002-November/131437.html
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// (4) SY6551 info: http://www.axess.com/twilight/sock/rs232pak.html
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//
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#include "StdAfx.h"
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#pragma hdrstop
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#include "..\resource\resource.h"
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//#define SUPPORT_MODEM
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#define TCP_SERIAL_OPTION 5
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#define TCP_SERIAL_PORT 1977
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// Default: 19200-8-N-1
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// Maybe a better default is: 9600-7-N-1 (for HyperTrm)
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SSC_DIPSW CSuperSerialCard::m_DIPSWDefault =
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{
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// DIPSW1:
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CBR_19200,
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FWMODE_CIC,
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// DIPSW2:
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ONESTOPBIT,
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8, // ByteSize
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NOPARITY,
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true, // LF
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false, // INT
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};
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//===========================================================================
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CSuperSerialCard::CSuperSerialCard()
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{
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m_dwSerialPort = 0;
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GetDIPSW();
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m_vRecvBytes = 0;
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m_hCommHandle = INVALID_HANDLE_VALUE;
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m_hCommListenSocket = INVALID_SOCKET;
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m_hCommAcceptSocket = INVALID_SOCKET;
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m_dwCommInactivity = 0;
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m_bTxIrqEnabled = false;
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m_bRxIrqEnabled = false;
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m_bWrittenTx = false;
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m_vbCommIRQ = false;
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m_hCommThread = NULL;
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for (UINT i=0; i<COMMEVT_MAX; i++)
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m_hCommEvent[i] = NULL;
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memset(&m_o, 0, sizeof(m_o));
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}
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//===========================================================================
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// TODO: Serial Comms - UI Property Sheet Page:
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// . Ability to config the 2x DIPSWs - only takes affect after next Apple2 reset
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// . 'Default' button that resets DIPSWs to DIPSWDefaults
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// . Need to respect IRQ disable dipswitch (cannot be overridden by software)
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void CSuperSerialCard::GetDIPSW()
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{
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// TODO: Read settings from Registry
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// In the meantime, use the defaults:
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SetDIPSWDefaults();
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//
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m_uBaudRate = m_DIPSWCurrent.uBaudRate;
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m_uStopBits = m_DIPSWCurrent.uStopBits;
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m_uByteSize = m_DIPSWCurrent.uByteSize;
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m_uParity = m_DIPSWCurrent.uParity;
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//
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m_uControlByte = GenerateControl();
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m_uCommandByte = 0x00;
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}
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void CSuperSerialCard::SetDIPSWDefaults()
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{
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// Default DIPSW settings (comms mode)
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// DIPSW1:
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m_DIPSWCurrent.uBaudRate = m_DIPSWDefault.uBaudRate;
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m_DIPSWCurrent.eFirmwareMode = m_DIPSWDefault.eFirmwareMode;
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// DIPSW2:
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m_DIPSWCurrent.uStopBits = m_DIPSWDefault.uStopBits;
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m_DIPSWCurrent.uByteSize = m_DIPSWDefault.uByteSize;
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m_DIPSWCurrent.uParity = m_DIPSWDefault.uParity;
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m_DIPSWCurrent.bLinefeed = m_DIPSWDefault.bLinefeed;
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m_DIPSWCurrent.bInterrupts = m_DIPSWDefault.bInterrupts;
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}
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BYTE CSuperSerialCard::GenerateControl()
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{
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const UINT CLK=1; // Internal
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UINT bmByteSize = (8 - m_uByteSize); // [8,7,6,5] -> [0,1,2,3]
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_ASSERT(bmByteSize <= 3);
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UINT StopBit;
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if ( ((m_uByteSize == 8) && (m_uParity != NOPARITY)) ||
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( m_uStopBits != ONESTOPBIT ) )
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StopBit = 1;
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else
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StopBit = 0;
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return (StopBit<<7) | (bmByteSize<<5) | (CLK<<4) | BaudRateToIndex(m_uBaudRate);
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}
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UINT CSuperSerialCard::BaudRateToIndex(UINT uBaudRate)
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{
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switch (uBaudRate)
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{
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case CBR_110: return 0x05;
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case CBR_300: return 0x06;
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case CBR_600: return 0x07;
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case CBR_1200: return 0x08;
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case CBR_2400: return 0x0A;
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case CBR_4800: return 0x0C;
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case CBR_9600: return 0x0E;
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case CBR_19200: return 0x0F;
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}
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_ASSERT(0);
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return BaudRateToIndex(CBR_9600);
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}
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//===========================================================================
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void CSuperSerialCard::UpdateCommState()
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{
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if (m_hCommHandle == INVALID_HANDLE_VALUE)
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return;
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DCB dcb;
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ZeroMemory(&dcb,sizeof(DCB));
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dcb.DCBlength = sizeof(DCB);
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GetCommState(m_hCommHandle,&dcb);
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dcb.BaudRate = m_uBaudRate;
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dcb.ByteSize = m_uByteSize;
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dcb.Parity = m_uParity;
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dcb.StopBits = m_uStopBits;
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SetCommState(m_hCommHandle,&dcb);
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}
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//===========================================================================
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BOOL CSuperSerialCard::CheckComm()
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{
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m_dwCommInactivity = 0;
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// check for COM or TCP socket handle, and setup if invalid
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if ((m_hCommHandle == INVALID_HANDLE_VALUE) && (m_hCommListenSocket == INVALID_SOCKET))
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{
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if (m_dwSerialPort == TCP_SERIAL_OPTION)
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{
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// init Winsock 1.1 (for Win95, otherwise could use 2.2)
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WSADATA wsaData;
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if (WSAStartup(MAKEWORD(1, 1), &wsaData) == 0) // or (2, 2) for Winsock 2.2
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{
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if (wsaData.wVersion != 0x0101) // or 0x0202 for Winsock 2.2
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{
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WSACleanup();
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return FALSE;
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}
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// initialized, so try to create a socket
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m_hCommListenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if (m_hCommListenSocket == INVALID_SOCKET)
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{
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WSACleanup();
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return FALSE;
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}
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// have socket so attempt to bind it
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SOCKADDR_IN saAddress;
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saAddress.sin_family = AF_INET;
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saAddress.sin_port = htons(TCP_SERIAL_PORT); // TODO: get from registry / GUI
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saAddress.sin_addr.s_addr = htonl(INADDR_ANY);
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if (bind(m_hCommListenSocket, (LPSOCKADDR)&saAddress, sizeof(saAddress)) == SOCKET_ERROR)
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{
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m_hCommListenSocket = INVALID_SOCKET;
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WSACleanup();
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return FALSE;
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}
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// bound, so listen
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if (listen(m_hCommListenSocket, 1) == SOCKET_ERROR)
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{
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m_hCommListenSocket = INVALID_SOCKET;
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WSACleanup();
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return FALSE;
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}
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// now send async events to our app's message handler
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if (WSAAsyncSelect(
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/* SOCKET s */ m_hCommListenSocket,
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/* HWND hWnd */ g_hFrameWindow,
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/* unsigned int wMsg */ WM_USER_TCP_SERIAL,
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/* long lEvent */ (FD_ACCEPT | FD_CONNECT | FD_READ | FD_CLOSE)) != 0)
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{
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m_hCommListenSocket = INVALID_SOCKET;
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WSACleanup();
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return FALSE;
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}
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}
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}
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else
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{
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TCHAR portname[8];
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wsprintf(portname, TEXT("COM%u"), m_dwSerialPort);
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m_hCommHandle = CreateFile(portname,
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GENERIC_READ | GENERIC_WRITE,
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0, // exclusive access
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(LPSECURITY_ATTRIBUTES)NULL, // default security attributes
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OPEN_EXISTING,
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FILE_FLAG_OVERLAPPED, // required for WaitCommEvent()
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NULL);
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if (m_hCommHandle != INVALID_HANDLE_VALUE)
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{
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UpdateCommState();
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COMMTIMEOUTS ct;
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ZeroMemory(&ct,sizeof(COMMTIMEOUTS));
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ct.ReadIntervalTimeout = MAXDWORD;
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SetCommTimeouts(m_hCommHandle,&ct);
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CommThInit();
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}
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else
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{
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DWORD uError = GetLastError();
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}
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}
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}
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return ((m_hCommHandle != INVALID_HANDLE_VALUE) || (m_hCommListenSocket != INVALID_SOCKET));
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}
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//===========================================================================
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void CSuperSerialCard::CloseComm()
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{
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CommTcpSerialCleanup(); // Shut down Winsock
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CommThUninit(); // Kill CommThread before closing COM handle
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if (m_hCommHandle != INVALID_HANDLE_VALUE)
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CloseHandle(m_hCommHandle);
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m_hCommHandle = INVALID_HANDLE_VALUE;
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m_dwCommInactivity = 0;
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}
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//===========================================================================
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void CSuperSerialCard::CommTcpSerialCleanup()
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{
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if (m_hCommListenSocket != INVALID_SOCKET)
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{
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WSAAsyncSelect(m_hCommListenSocket, g_hFrameWindow, 0, 0); // Stop event messages
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closesocket(m_hCommListenSocket);
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m_hCommListenSocket = INVALID_SOCKET;
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CommTcpSerialClose();
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WSACleanup();
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}
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}
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//===========================================================================
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void CSuperSerialCard::CommTcpSerialClose()
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{
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if (m_hCommAcceptSocket != INVALID_SOCKET)
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{
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shutdown(m_hCommAcceptSocket, 2 /* SD_BOTH */); // In case the client is waiting for data
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closesocket(m_hCommAcceptSocket);
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m_hCommAcceptSocket = INVALID_SOCKET;
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}
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while (!m_TcpSerialBuffer.empty())
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{
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m_TcpSerialBuffer.pop();
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}
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}
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//===========================================================================
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void CSuperSerialCard::CommTcpSerialAccept()
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{
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// Valid listener socket and invalid accept socket?
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if ((m_hCommListenSocket != INVALID_SOCKET) && (m_hCommAcceptSocket == INVALID_SOCKET))
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{
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// Y: accept the connection
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m_hCommAcceptSocket = accept(m_hCommListenSocket, NULL, NULL );
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}
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}
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//===========================================================================
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void CSuperSerialCard::CommTcpSerialReceive()
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{
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if (m_hCommAcceptSocket != INVALID_SOCKET)
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{
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char data[0x80];
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int received = 0;
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while ((received = recv(m_hCommAcceptSocket, data, sizeof(data), 0)) > 0)
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{
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for (int i = 0; i < received; i++)
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{
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m_TcpSerialBuffer.push(data[i]);
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}
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}
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if (m_bRxIrqEnabled && !m_TcpSerialBuffer.empty())
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{
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m_vbCommIRQ = true;
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CpuIrqAssert(IS_SSC);
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}
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}
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}
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//===========================================================================
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BYTE __stdcall CSuperSerialCard::SSC_IORead(WORD PC, WORD uAddr, BYTE bWrite, BYTE uValue, ULONG nCyclesLeft)
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{
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UINT uSlot = ((uAddr & 0xff) >> 4) - 8;
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CSuperSerialCard* pSSC = (CSuperSerialCard*) MemGetSlotParameters(uSlot);
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switch (uAddr & 0xf)
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{
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case 0x0: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x1: return pSSC->CommDipSw(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x2: return pSSC->CommDipSw(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x3: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x4: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x5: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x6: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x7: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x8: return pSSC->CommReceive(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x9: return pSSC->CommStatus(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0xA: return pSSC->CommCommand(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0xB: return pSSC->CommControl(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0xC: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0xD: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0xE: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0xF: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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}
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return 0;
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}
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BYTE __stdcall CSuperSerialCard::SSC_IOWrite(WORD PC, WORD uAddr, BYTE bWrite, BYTE uValue, ULONG nCyclesLeft)
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{
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UINT uSlot = ((uAddr & 0xff) >> 4) - 8;
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CSuperSerialCard* pSSC = (CSuperSerialCard*) MemGetSlotParameters(uSlot);
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switch (uAddr & 0xf)
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{
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case 0x0: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x1: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x2: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x3: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x4: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x5: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x6: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x7: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x8: return pSSC->CommTransmit(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0x9: return pSSC->CommStatus(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0xA: return pSSC->CommCommand(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0xB: return pSSC->CommControl(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0xC: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0xD: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0xE: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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case 0xF: return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
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}
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return 0;
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}
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//===========================================================================
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// EG. 0x09 = Enable IRQ, No parity [Ref.2]
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BYTE __stdcall CSuperSerialCard::CommCommand(WORD, WORD, BYTE write, BYTE value, ULONG)
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{
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if (!CheckComm())
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return 0;
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if (write && (value != m_uCommandByte))
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{
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m_uCommandByte = value;
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// UPDATE THE PARITY
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if (m_uCommandByte & 0x20)
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{
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switch (m_uCommandByte & 0xC0)
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{
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case 0x00 : m_uParity = ODDPARITY; break;
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case 0x40 : m_uParity = EVENPARITY; break;
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case 0x80 : m_uParity = MARKPARITY; break;
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case 0xC0 : m_uParity = SPACEPARITY; break;
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}
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}
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else
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{
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m_uParity = NOPARITY;
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}
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if (m_uCommandByte & 0x10) // Receiver mode echo [0=no echo, 1=echo]
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{
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}
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switch (m_uCommandByte & 0x0C) // transmitter interrupt control
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{
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// Note: the RTS signal must be set 'low' in order to receive any
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// incoming data from the serial device
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case 0<<2: // set RTS high and transmit no interrupts
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m_bTxIrqEnabled = false;
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break;
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case 1<<2: // set RTS low and transmit interrupts
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m_bTxIrqEnabled = true;
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break;
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case 2<<2: // set RTS low and transmit no interrupts
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m_bTxIrqEnabled = false;
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break;
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case 3<<2: // set RTS low and transmit break signals instead of interrupts
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m_bTxIrqEnabled = false;
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break;
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}
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// interrupt request disable [0=enable receiver interrupts] - NOTE: SSC docs get this wrong!
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m_bRxIrqEnabled = ((m_uCommandByte & 0x02) == 0);
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if (m_uCommandByte & 0x01) // Data Terminal Ready (DTR) setting [0=set DTR high (indicates 'not ready')]
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{
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// Note that, although the DTR is generally not used in the SSC (it may actually not
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// be connected!), it must be set to 'low' in order for the 6551 to function correctly.
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}
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UpdateCommState();
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}
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return m_uCommandByte;
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}
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|
|
//===========================================================================
|
|
|
|
BYTE __stdcall CSuperSerialCard::CommControl(WORD, WORD, BYTE write, BYTE value, ULONG)
|
|
{
|
|
if (!CheckComm())
|
|
return 0;
|
|
|
|
if (write && (value != m_uControlByte))
|
|
{
|
|
m_uControlByte = value;
|
|
|
|
// 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.
|
|
|
|
case 0x00: // fall through [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;
|
|
}
|
|
|
|
UpdateCommState();
|
|
}
|
|
|
|
return m_uControlByte;
|
|
}
|
|
|
|
//===========================================================================
|
|
|
|
BYTE __stdcall CSuperSerialCard::CommReceive(WORD, WORD, BYTE, BYTE, ULONG)
|
|
{
|
|
if (!CheckComm())
|
|
return 0;
|
|
|
|
BYTE result = 0;
|
|
|
|
if (!m_TcpSerialBuffer.empty())
|
|
{
|
|
result = m_TcpSerialBuffer.front();
|
|
m_TcpSerialBuffer.pop();
|
|
}
|
|
else if (m_vRecvBytes)
|
|
{
|
|
// Don't need critical section in here as CommThread is waiting for ACK
|
|
|
|
result = m_RecvBuffer[0];
|
|
--m_vRecvBytes;
|
|
|
|
if (m_vbCommIRQ && !m_vRecvBytes)
|
|
{
|
|
// Read last byte, so get CommThread to call WaitCommEvent() again
|
|
OutputDebugString("CommRecv: SetEvent - ACK\n");
|
|
SetEvent(m_hCommEvent[COMMEVT_ACK]);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
//===========================================================================
|
|
|
|
BYTE __stdcall CSuperSerialCard::CommTransmit(WORD, WORD, BYTE, BYTE value, ULONG)
|
|
{
|
|
if (!CheckComm())
|
|
return 0;
|
|
|
|
if (m_hCommAcceptSocket != INVALID_SOCKET)
|
|
{
|
|
BYTE data = value;
|
|
if (m_uByteSize < 8)
|
|
{
|
|
data &= ~(1 << m_uByteSize);
|
|
}
|
|
send(m_hCommAcceptSocket, (const char*)&data, 1, 0);
|
|
m_bWrittenTx = true; // Transmit done
|
|
}
|
|
else if (m_hCommHandle != INVALID_HANDLE_VALUE)
|
|
{
|
|
DWORD uBytesWritten;
|
|
WriteFile(m_hCommHandle, &value, 1, &uBytesWritten, &m_o);
|
|
m_bWrittenTx = true; // Transmit done
|
|
}
|
|
|
|
// TO DO:
|
|
// 1) Use CommThread determine when transmit is complete
|
|
// 2) OR do this:
|
|
//if (m_bTxIrqEnabled)
|
|
// CpuIrqAssert(IS_SSC);
|
|
|
|
return 0;
|
|
}
|
|
|
|
//===========================================================================
|
|
|
|
// 6551 ACIA Status Register ($C089+s0)
|
|
// ------------------------------------
|
|
// Bit Value Meaning
|
|
// 0 1 Parity error
|
|
// 1 1 Framing error
|
|
// 2 1 Overrun error
|
|
// 3 1 Receive register full
|
|
// 4 1 Transmit register empty
|
|
// 5 0 Data Carrier Detect (DCD) true [0=DCD low (detected), 1=DCD high (not detected)]
|
|
// 6 0 Data Set Ready (DSR) true [0=DSR low (ready), 1=DSR high (not ready)]
|
|
// 7 1 Interrupt (IRQ) true (cleared by reading status reg [Ref.4])
|
|
|
|
enum { ST_PARITY_ERR = 1<<0,
|
|
ST_FRAMING_ERR = 1<<1,
|
|
ST_OVERRUN_ERR = 1<<2,
|
|
ST_RX_FULL = 1<<3,
|
|
ST_TX_EMPTY = 1<<4,
|
|
ST_DCD = 1<<5,
|
|
ST_DSR = 1<<6,
|
|
ST_IRQ = 1<<7
|
|
};
|
|
|
|
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
|
|
|
|
//
|
|
|
|
// TO DO - ST_TX_EMPTY:
|
|
// . IRQs enabled : set after WaitCommEvent has signaled that TX has completed
|
|
// . IRQs disabled : always set it [Currently done]
|
|
//
|
|
|
|
// So that /m_vRecvBytes/ doesn't change midway (from 0 to 1):
|
|
// . bIRQ=false, but uStatus.ST_RX_FULL=1
|
|
if (m_hCommHandle != INVALID_HANDLE_VALUE)
|
|
{
|
|
EnterCriticalSection(&m_CriticalSection);
|
|
}
|
|
|
|
bool bIRQ = false;
|
|
if (m_bTxIrqEnabled && m_bWrittenTx)
|
|
{
|
|
bIRQ = true;
|
|
}
|
|
if (m_bRxIrqEnabled && (m_vRecvBytes || !m_TcpSerialBuffer.empty()))
|
|
{
|
|
bIRQ = true;
|
|
}
|
|
|
|
m_bWrittenTx = false; // Read status reg always clears IRQ
|
|
|
|
//
|
|
|
|
BYTE uStatus = ST_TX_EMPTY
|
|
| ((m_vRecvBytes || !m_TcpSerialBuffer.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);
|
|
|
|
if (m_hCommHandle != INVALID_HANDLE_VALUE)
|
|
{
|
|
LeaveCriticalSection(&m_CriticalSection);
|
|
}
|
|
|
|
CpuIrqDeassert(IS_SSC);
|
|
|
|
return uStatus;
|
|
}
|
|
|
|
//===========================================================================
|
|
|
|
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 manual, pg23/24
|
|
BYTE INT = m_DIPSWCurrent.uStopBits == TWOSTOPBITS ? 1 : 0; // SW2-1 (Stop bits: 1-ON(0); 2-OFF(1))
|
|
BYTE DSR = 0; // Always zero
|
|
BYTE DCD = m_DIPSWCurrent.uByteSize == 7 ? 1 : 0; // SW2-2 (Data bits: 8-ON(0); 7-OFF(1))
|
|
BYTE TDR = 0; // Always zero
|
|
|
|
// SW2-3 (Parity: odd-ON(0); even-OFF(1))
|
|
// SW2-4 (Parity: none-ON(0); SW2-3-OFF(1))
|
|
BYTE RDR,OVR;
|
|
switch (m_DIPSWCurrent.uParity)
|
|
{
|
|
case ODDPARITY:
|
|
RDR = 0; OVR = 1;
|
|
break;
|
|
case EVENPARITY:
|
|
RDR = 1; OVR = 1;
|
|
break;
|
|
default:
|
|
_ASSERT(0);
|
|
case NOPARITY:
|
|
RDR = 0; OVR = 0;
|
|
break;
|
|
}
|
|
|
|
BYTE FE = m_DIPSWCurrent.bLinefeed ? 1 : 0; // SW2-5 (LF: yes-ON(0); no-OFF(1))
|
|
BYTE PE = m_DIPSWCurrent.bInterrupts ? 1 : 0; // SW2-6 (Interrupts: yes-ON(0); no-OFF(1))
|
|
|
|
sw = (INT<<7) | (DSR<<6) | (DCD<<5) | (TDR<<4) | (RDR<<3) | (OVR<<2) | (FE<<1) | (PE<<0);
|
|
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;
|
|
|
|
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();
|
|
|
|
GetDIPSW();
|
|
|
|
m_vRecvBytes = 0;
|
|
|
|
//
|
|
|
|
m_bTxIrqEnabled = false;
|
|
m_bRxIrqEnabled = false;
|
|
|
|
m_bWrittenTx = false;
|
|
|
|
m_vbCommIRQ = false;
|
|
}
|
|
|
|
//===========================================================================
|
|
|
|
void CSuperSerialCard::CommDestroy()
|
|
{
|
|
CommReset();
|
|
|
|
delete [] m_pExpansionRom;
|
|
m_pExpansionRom = NULL;
|
|
}
|
|
|
|
//===========================================================================
|
|
|
|
void CSuperSerialCard::CommSetSerialPort(HWND window, DWORD newserialport)
|
|
{
|
|
if ((m_hCommHandle == INVALID_HANDLE_VALUE) && (m_hCommListenSocket == INVALID_SOCKET))
|
|
{
|
|
m_dwSerialPort = newserialport;
|
|
}
|
|
else
|
|
{
|
|
MessageBox(window,
|
|
TEXT("You cannot change the serial port while it is ")
|
|
TEXT("in use."),
|
|
TEXT("Configuration"),
|
|
MB_ICONEXCLAMATION | MB_SETFOREGROUND);
|
|
}
|
|
}
|
|
|
|
//===========================================================================
|
|
|
|
void CSuperSerialCard::CommUpdate(DWORD totalcycles)
|
|
{
|
|
if ((m_hCommHandle == INVALID_HANDLE_VALUE) && (m_hCommListenSocket == INVALID_SOCKET))
|
|
return;
|
|
|
|
if ((m_dwCommInactivity += totalcycles) > 1000000)
|
|
{
|
|
static DWORD lastcheck = 0;
|
|
|
|
if ((m_dwCommInactivity > 2000000) || (m_dwCommInactivity-lastcheck > 99950))
|
|
{
|
|
#ifdef SUPPORT_MODEM
|
|
DWORD modemstatus = 0;
|
|
GetCommModemStatus(m_hCommHandle,&modemstatus);
|
|
if ((modemstatus & MS_RLSD_ON) || DiskIsSpinning())
|
|
m_dwCommInactivity = 0;
|
|
#else
|
|
if (DiskIsSpinning())
|
|
m_dwCommInactivity = 0;
|
|
#endif
|
|
}
|
|
|
|
//if (m_dwCommInactivity > 2000000)
|
|
// CloseComm();
|
|
}
|
|
}
|
|
|
|
//===========================================================================
|
|
|
|
void CSuperSerialCard::CheckCommEvent(DWORD dwEvtMask)
|
|
{
|
|
if (dwEvtMask & EV_RXCHAR)
|
|
{
|
|
EnterCriticalSection(&m_CriticalSection);
|
|
ReadFile(m_hCommHandle, m_RecvBuffer, 1, (DWORD*)&m_vRecvBytes, &m_o);
|
|
LeaveCriticalSection(&m_CriticalSection);
|
|
|
|
if (m_bRxIrqEnabled && m_vRecvBytes)
|
|
{
|
|
m_vbCommIRQ = true;
|
|
CpuIrqAssert(IS_SSC);
|
|
}
|
|
}
|
|
//else if (dwEvtMask & EV_TXEMPTY)
|
|
//{
|
|
// if (m_bTxIrqEnabled)
|
|
// {
|
|
// m_vbCommIRQ = true;
|
|
// CpuIrqAssert(IS_SSC);
|
|
// }
|
|
//}
|
|
}
|
|
|
|
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
|
|
if (!bRes)
|
|
return -1;
|
|
|
|
//
|
|
|
|
const UINT nNumEvents = 2;
|
|
#if 1
|
|
HANDLE hCommEvent_Wait[nNumEvents] = {pSSC->m_hCommEvent[COMMEVT_WAIT], pSSC->m_hCommEvent[COMMEVT_TERM]};
|
|
HANDLE hCommEvent_Ack[nNumEvents] = {pSSC->m_hCommEvent[COMMEVT_ACK], pSSC->m_hCommEvent[COMMEVT_TERM]};
|
|
#else
|
|
HANDLE hCommEvent_Wait[nNumEvents];
|
|
HANDLE hCommEvent_Ack[nNumEvents];
|
|
|
|
hCommEvent_Wait[0] = m_hCommEvent[COMMEVT_WAIT];
|
|
hCommEvent_Wait[1] = m_hCommEvent[COMMEVT_TERM];
|
|
|
|
hCommEvent_Ack[0] = m_hCommEvent[COMMEVT_ACK];
|
|
hCommEvent_Ack[1] = m_hCommEvent[COMMEVT_TERM];
|
|
#endif
|
|
|
|
while(1)
|
|
{
|
|
DWORD dwEvtMask = 0;
|
|
DWORD dwWaitResult;
|
|
|
|
bRes = WaitCommEvent(pSSC->m_hCommHandle, &dwEvtMask, &pSSC->m_o); // Will return immediately (probably with ERROR_IO_PENDING)
|
|
_ASSERT(!bRes);
|
|
if (!bRes)
|
|
{
|
|
DWORD dwRet = GetLastError();
|
|
// Got this error once: ERROR_OPERATION_ABORTED
|
|
_ASSERT(dwRet == ERROR_IO_PENDING);
|
|
if (dwRet != ERROR_IO_PENDING)
|
|
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);
|
|
|
|
if (pSSC->m_vbCommIRQ)
|
|
{
|
|
//
|
|
// Wait for ack
|
|
//
|
|
|
|
while(1)
|
|
{
|
|
OutputDebugString("CommThread: Wait2\n");
|
|
dwWaitResult = WaitForMultipleObjects(
|
|
nNumEvents, // number of handles in array
|
|
hCommEvent_Ack, // array of event handles
|
|
FALSE, // wait until any one is signaled
|
|
INFINITE);
|
|
|
|
if ((dwWaitResult >= WAIT_OBJECT_0) && (dwWaitResult <= WAIT_OBJECT_0+nNumEvents-1))
|
|
break;
|
|
}
|
|
|
|
dwWaitResult -= WAIT_OBJECT_0; // Determine event # that signaled
|
|
sprintf(szDbg, "CommThread: GotEvent2: %d\n", dwWaitResult); OutputDebugString(szDbg);
|
|
|
|
if (dwWaitResult == (nNumEvents-1))
|
|
break; // Termination event
|
|
|
|
pSSC->m_vbCommIRQ = false;
|
|
}
|
|
}
|
|
|
|
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)
|
|
{
|
|
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);
|
|
|
|
InitializeCriticalSection(&m_CriticalSection);
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
//===========================================================================
|
|
|
|
DWORD CSuperSerialCard::CommGetSnapshot(SS_IO_Comms* pSS)
|
|
{
|
|
pSS->baudrate = m_uBaudRate;
|
|
pSS->bytesize = m_uByteSize;
|
|
pSS->commandbyte = m_uCommandByte;
|
|
pSS->comminactivity = m_dwCommInactivity;
|
|
pSS->controlbyte = m_uControlByte;
|
|
pSS->parity = m_uParity;
|
|
memcpy(pSS->recvbuffer, m_RecvBuffer, uRecvBufferSize);
|
|
pSS->recvbytes = m_vRecvBytes;
|
|
pSS->stopbits = m_uStopBits;
|
|
return 0;
|
|
}
|
|
|
|
DWORD CSuperSerialCard::CommSetSnapshot(SS_IO_Comms* pSS)
|
|
{
|
|
m_uBaudRate = pSS->baudrate;
|
|
m_uByteSize = pSS->bytesize;
|
|
m_uCommandByte = pSS->commandbyte;
|
|
m_dwCommInactivity = pSS->comminactivity;
|
|
m_uControlByte = pSS->controlbyte;
|
|
m_uParity = pSS->parity;
|
|
memcpy(m_RecvBuffer, pSS->recvbuffer, uRecvBufferSize);
|
|
m_vRecvBytes = pSS->recvbytes;
|
|
m_uStopBits = pSS->stopbits;
|
|
return 0;
|
|
}
|