106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/*
|
|
* DOS interrupt 09h handler (IRQ1 - KEYBOARD)
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "windef.h"
|
|
#include "wingdi.h"
|
|
#include "winuser.h"
|
|
#include "miscemu.h"
|
|
#include "debugtools.h"
|
|
#include "dosexe.h"
|
|
|
|
DEFAULT_DEBUG_CHANNEL(int);
|
|
|
|
#define QUEUELEN 31
|
|
|
|
typedef struct {
|
|
BYTE queuelen,queue[QUEUELEN],ascii[QUEUELEN];
|
|
} KBDSYSTEM;
|
|
|
|
/**********************************************************************
|
|
* INT_Int09Handler
|
|
*
|
|
* Handler for int 09h.
|
|
*/
|
|
void WINAPI INT_Int09Handler( CONTEXT86 *context )
|
|
{
|
|
BYTE ascii, scan = INT_Int09ReadScan(&ascii);
|
|
BYTE ch[2];
|
|
int cnt, c2;
|
|
|
|
TRACE("scan=%02x\n",scan);
|
|
if (!(scan & 0x80)) {
|
|
if (ascii) {
|
|
/* we already have an ASCII code, no translation necessary */
|
|
ch[0] = ascii;
|
|
cnt = 1;
|
|
} else {
|
|
#if 0 /* FIXME: cannot call USER functions here */
|
|
UINT vkey = MapVirtualKeyA(scan&0x7f, 1);
|
|
/* as in TranslateMessage, windows/input.c */
|
|
cnt = ToAscii(vkey, scan, QueueKeyStateTable, (LPWORD)ch, 0);
|
|
#else
|
|
cnt = 0;
|
|
#endif
|
|
}
|
|
if (cnt>0) {
|
|
for (c2=0; c2<cnt; c2++)
|
|
INT_Int16AddChar(ch[c2], scan);
|
|
} else
|
|
if (cnt==0) {
|
|
/* FIXME: need to handle things like shift-F-keys,
|
|
* 0xE0 extended keys, etc */
|
|
INT_Int16AddChar(0, scan);
|
|
}
|
|
}
|
|
DOSVM_PIC_ioport_out(0x20, 0x20); /* send EOI */
|
|
}
|
|
|
|
static void KbdRelay( LPDOSTASK lpDosTask, CONTEXT86 *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);
|
|
memmove(sys->ascii,sys->ascii+1,sys->queuelen);
|
|
}
|
|
}
|
|
}
|
|
|
|
void WINAPI INT_Int09SendScan( BYTE scan, BYTE ascii )
|
|
{
|
|
KBDSYSTEM *sys = (KBDSYSTEM *)DOSVM_GetSystemData(0x09);
|
|
if (!sys) {
|
|
sys = calloc(1,sizeof(KBDSYSTEM));
|
|
DOSVM_SetSystemData(0x09,sys);
|
|
}
|
|
if (sys->queuelen == QUEUELEN) {
|
|
ERR("keyboard queue overflow\n");
|
|
return;
|
|
}
|
|
/* add scancode to queue */
|
|
sys->queue[sys->queuelen] = scan;
|
|
sys->ascii[sys->queuelen++] = ascii;
|
|
/* tell app to read it by triggering IRQ 1 (int 09) */
|
|
DOSVM_QueueEvent(1,DOS_PRIORITY_KEYBOARD,KbdRelay,NULL);
|
|
}
|
|
|
|
BYTE WINAPI INT_Int09ReadScan( BYTE*ascii )
|
|
{
|
|
KBDSYSTEM *sys = (KBDSYSTEM *)DOSVM_GetSystemData(0x09);
|
|
if (sys) {
|
|
if (ascii) *ascii = sys->ascii[0];
|
|
return sys->queue[0];
|
|
} else {
|
|
if (ascii) *ascii = 0;
|
|
return 0;
|
|
}
|
|
}
|