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112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/*
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* DOS interrupt 09h handler (IRQ1 - KEYBOARD)
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*
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* Copyright 1999 Ove Kåven
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; 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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#include <stdlib.h>
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#include <string.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "miscemu.h"
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#include "wine/debug.h"
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#include "dosexe.h"
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WINE_DEFAULT_DEBUG_CHANNEL(int);
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#define QUEUELEN 31
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static struct
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{
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BYTE queuelen,queue[QUEUELEN],ascii[QUEUELEN];
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} kbdinfo;
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/**********************************************************************
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* DOSVM_Int09Handler
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*
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* Handler for int 09h.
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*/
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void WINAPI DOSVM_Int09Handler( CONTEXT86 *context )
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{
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BYTE ascii, scan = DOSVM_Int09ReadScan(&ascii);
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BYTE ch[2];
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int cnt, c2;
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TRACE("scan=%02x\n",scan);
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if (!(scan & 0x80)) {
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if (ascii) {
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/* we already have an ASCII code, no translation necessary */
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ch[0] = ascii;
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cnt = 1;
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} else {
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UINT vkey = MapVirtualKeyA(scan&0x7f, 1);
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BYTE keystate[256];
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GetKeyboardState(keystate);
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cnt = ToAscii(vkey, scan, keystate, (LPWORD)ch, 0);
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}
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if (cnt>0) {
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for (c2=0; c2<cnt; c2++)
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DOSVM_Int16AddChar(ch[c2], scan);
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} else
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if (cnt==0) {
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/* FIXME: need to handle things like shift-F-keys,
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* 0xE0 extended keys, etc */
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DOSVM_Int16AddChar(0, scan);
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}
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}
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DOSVM_PIC_ioport_out( 0x20, 0x20 ); /* send EOI */
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}
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static void KbdRelay( CONTEXT86 *context, void *data )
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{
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if (kbdinfo.queuelen) {
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/* cleanup operation, called from DOSVM_PIC_ioport_out:
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* we'll remove current scancode from keyboard buffer here,
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* rather than in ReadScan, because some DOS apps depend on
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* the scancode being available for reading multiple times... */
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if (--kbdinfo.queuelen) {
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memmove(kbdinfo.queue,kbdinfo.queue+1,kbdinfo.queuelen);
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memmove(kbdinfo.ascii,kbdinfo.ascii+1,kbdinfo.queuelen);
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}
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}
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}
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void WINAPI DOSVM_Int09SendScan( BYTE scan, BYTE ascii )
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{
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if (kbdinfo.queuelen == QUEUELEN) {
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ERR("keyboard queue overflow\n");
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return;
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}
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/* add scancode to queue */
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kbdinfo.queue[kbdinfo.queuelen] = scan;
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kbdinfo.ascii[kbdinfo.queuelen++] = ascii;
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/* tell app to read it by triggering IRQ 1 (int 09) */
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DOSVM_QueueEvent(1,DOS_PRIORITY_KEYBOARD,KbdRelay,NULL);
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}
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/**********************************************************************
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* KbdReadScan (WINEDOS.@)
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*/
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BYTE WINAPI DOSVM_Int09ReadScan( BYTE*ascii )
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{
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if (ascii) *ascii = kbdinfo.ascii[0];
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return kbdinfo.queue[0];
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}
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