AppleWin/source/ParallelPrinter.cpp

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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) 2006-2007, 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: Parallel Printer Interface Card emulation
*
* Author: Nick Westgate
*/
#include "StdAfx.h"
#pragma hdrstop
#include "..\resource\resource.h"
static DWORD inactivity = 0;
static FILE* file = NULL;
DWORD const PRINTDRVR_SIZE = 0x100;
//===========================================================================
static BYTE __stdcall PrintStatus(WORD, WORD, BYTE, BYTE, ULONG);
static BYTE __stdcall PrintTransmit(WORD, WORD, BYTE, BYTE value, ULONG);
VOID PrintLoadRom(LPBYTE pCxRomPeripheral, const UINT uSlot)
{
HRSRC hResInfo = FindResource(NULL, MAKEINTRESOURCE(IDR_PRINTDRVR_FW), "FIRMWARE");
if(hResInfo == NULL)
return;
DWORD dwResSize = SizeofResource(NULL, hResInfo);
if(dwResSize != PRINTDRVR_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, PRINTDRVR_SIZE);
//
RegisterIoHandler(uSlot, PrintStatus, PrintTransmit, NULL, NULL, NULL, NULL);
}
//===========================================================================
static BOOL CheckPrint()
{
inactivity = 0;
if (file == NULL)
{
TCHAR filepath[MAX_PATH * 2];
_tcsncpy(filepath, g_sProgramDir, MAX_PATH);
_tcsncat(filepath, _T("Printer.txt"), MAX_PATH);
file = fopen(filepath, "wb");
}
return (file != NULL);
}
//===========================================================================
static void ClosePrint()
{
if (file != NULL)
{
fclose(file);
file = NULL;
}
inactivity = 0;
}
//===========================================================================
void PrintDestroy()
{
ClosePrint();
}
//===========================================================================
void PrintUpdate(DWORD totalcycles)
{
if (file == NULL)
{
return;
}
if ((inactivity += totalcycles) > (10 * 1000 * 1000)) // around 10 seconds
{
// inactive, so close the file (next print will overwrite it)
ClosePrint();
}
}
//===========================================================================
void PrintReset()
{
ClosePrint();
}
//===========================================================================
static BYTE __stdcall PrintStatus(WORD, WORD, BYTE, BYTE, ULONG)
{
CheckPrint();
return 0xFF; // status - TODO?
}
//===========================================================================
static BYTE __stdcall PrintTransmit(WORD, WORD, BYTE, BYTE value, ULONG)
{
if (!CheckPrint())
{
return 0;
}
char c = value & 0x7F;
fwrite(&c, 1, 1, file);
return 0;
}
//===========================================================================