2 * DOS interrupt 09h handler (IRQ1 - KEYBOARD)
13 #include "debugtools.h"
17 DEFAULT_DEBUG_CHANNEL(int);
23 BYTE queuelen,queue[QUEUELEN],ascii[QUEUELEN];
27 /**********************************************************************
30 * Handler for int 09h.
32 void WINAPI INT_Int09Handler( CONTEXT86 *context )
34 BYTE ascii, scan = INT_Int09ReadScan(&ascii);
38 TRACE("scan=%02x\n",scan);
41 /* we already have an ASCII code, no translation necessary */
45 #if 0 /* FIXME: cannot call USER functions here */
46 UINT vkey = MapVirtualKeyA(scan&0x7f, 1);
47 /* as in TranslateMessage, windows/input.c */
48 cnt = ToAscii(vkey, scan, QueueKeyStateTable, (LPWORD)ch, 0);
54 for (c2=0; c2<cnt; c2++)
55 INT_Int16AddChar(ch[c2], scan);
58 /* FIXME: need to handle things like shift-F-keys,
59 * 0xE0 extended keys, etc */
60 INT_Int16AddChar(0, scan);
63 Dosvm.OutPIC(0x20, 0x20); /* send EOI */
66 static void KbdRelay( CONTEXT86 *context, void *data )
68 if (kbdinfo.queuelen) {
69 /* cleanup operation, called from Dosvm.OutPIC:
70 * we'll remove current scancode from keyboard buffer here,
71 * rather than in ReadScan, because some DOS apps depend on
72 * the scancode being available for reading multiple times... */
73 if (--kbdinfo.queuelen) {
74 memmove(kbdinfo.queue,kbdinfo.queue+1,kbdinfo.queuelen);
75 memmove(kbdinfo.ascii,kbdinfo.ascii+1,kbdinfo.queuelen);
80 void WINAPI INT_Int09SendScan( BYTE scan, BYTE ascii )
82 if (kbdinfo.queuelen == QUEUELEN) {
83 ERR("keyboard queue overflow\n");
86 /* add scancode to queue */
87 kbdinfo.queue[kbdinfo.queuelen] = scan;
88 kbdinfo.ascii[kbdinfo.queuelen++] = ascii;
89 /* tell app to read it by triggering IRQ 1 (int 09) */
90 Dosvm.QueueEvent(1,DOS_PRIORITY_KEYBOARD,KbdRelay,NULL);
93 BYTE WINAPI INT_Int09ReadScan( BYTE*ascii )
95 if (ascii) *ascii = kbdinfo.ascii[0];
96 return kbdinfo.queue[0];