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Implemented a int 0x09 handler, and a scancode queue that simulates

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IRQ 1 in the dos box.
This commit is contained in:
Ove Kaaven 1999-03-25 10:50:32 +00:00 committed by Alexandre Julliard
parent 384a8944bd
commit bb7f0de707
1 changed files with 72 additions and 0 deletions
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72
msdos/int09.c Normal file
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/*
* DOS interrupt 09h handler (IRQ1 - KEYBOARD)
*/
#include <stdlib.h>
#include "winuser.h"
#include "miscemu.h"
#include "input.h"
#include "debug.h"
#include "dosexe.h"
typedef struct {
BYTE queuelen,queue[15];
} KBDSYSTEM;
/**********************************************************************
* INT_Int09Handler
*
* Handler for int 09h.
*/
void WINAPI INT_Int09Handler( CONTEXT *context )
{
BYTE scan = INT_Int09ReadScan();
UINT vkey = MapVirtualKeyA(scan&0x7f, 1);
BYTE ch[2];
int cnt;
if (!(scan & 0x80)) {
/* as in TranslateMessage, windows/input.c */
cnt = ToAscii(vkey, scan&0x7f, QueueKeyStateTable, (LPWORD)ch, 0);
if (cnt==1) {
FIXME(int,"enter character %c into console input, not implemented\n",ch[0]);
}
}
DOSVM_PIC_ioport_out(0x20, 0x20); /* send EOI */
}
static void KbdRelay( LPDOSTASK lpDosTask, PCONTEXT context, void *data )
{
KBDSYSTEM *sys = (KBDSYSTEM *)DOSVM_GetSystemData(0x09);
if (sys && sys->queuelen) {
/* cleanup operation, called from DOSVM_PIC_ioport_out:
* we'll remove current scancode from keyboard buffer here,
* rather than in ReadScan, because some DOS apps depend on
* the scancode being available for reading multiple times... */
if (--sys->queuelen)
memmove(sys->queue,sys->queue+1,sys->queuelen);
}
}
void WINAPI INT_Int09SendScan( BYTE scan )
{
KBDSYSTEM *sys = (KBDSYSTEM *)DOSVM_GetSystemData(0x09);
if (!sys) {
sys = calloc(1,sizeof(KBDSYSTEM));
DOSVM_SetSystemData(0x09,sys);
}
/* add scancode to queue */
sys->queue[sys->queuelen++] = scan;
/* tell app to read it by triggering IRQ 1 (int 09) */
DOSVM_QueueEvent(1,DOS_PRIORITY_KEYBOARD,KbdRelay,NULL);
}
BYTE WINAPI INT_Int09ReadScan( void )
{
KBDSYSTEM *sys = (KBDSYSTEM *)DOSVM_GetSystemData(0x09);
if (sys)
return sys->queue[0];
else
return 0;
}