2 * DOS interrupt 09h handler (IRQ1 - KEYBOARD)
11 #include "debugtools.h"
14 DEFAULT_DEBUG_CHANNEL(int);
20 BYTE queuelen,queue[QUEUELEN],ascii[QUEUELEN];
24 /**********************************************************************
27 * Handler for int 09h.
29 void WINAPI INT_Int09Handler( CONTEXT86 *context )
31 BYTE ascii, scan = INT_Int09ReadScan(&ascii);
35 TRACE("scan=%02x\n",scan);
38 /* we already have an ASCII code, no translation necessary */
42 #if 0 /* FIXME: cannot call USER functions here */
43 UINT vkey = MapVirtualKeyA(scan&0x7f, 1);
44 /* as in TranslateMessage, windows/input.c */
45 cnt = ToAscii(vkey, scan, QueueKeyStateTable, (LPWORD)ch, 0);
51 for (c2=0; c2<cnt; c2++)
52 INT_Int16AddChar(ch[c2], scan);
55 /* FIXME: need to handle things like shift-F-keys,
56 * 0xE0 extended keys, etc */
57 INT_Int16AddChar(0, scan);
60 DOSVM_PIC_ioport_out(0x20, 0x20); /* send EOI */
63 static void KbdRelay( CONTEXT86 *context, void *data )
65 if (kbdinfo.queuelen) {
66 /* cleanup operation, called from DOSVM_PIC_ioport_out:
67 * we'll remove current scancode from keyboard buffer here,
68 * rather than in ReadScan, because some DOS apps depend on
69 * the scancode being available for reading multiple times... */
70 if (--kbdinfo.queuelen) {
71 memmove(kbdinfo.queue,kbdinfo.queue+1,kbdinfo.queuelen);
72 memmove(kbdinfo.ascii,kbdinfo.ascii+1,kbdinfo.queuelen);
77 void WINAPI INT_Int09SendScan( BYTE scan, BYTE ascii )
79 if (kbdinfo.queuelen == QUEUELEN) {
80 ERR("keyboard queue overflow\n");
83 /* add scancode to queue */
84 kbdinfo.queue[kbdinfo.queuelen] = scan;
85 kbdinfo.ascii[kbdinfo.queuelen++] = ascii;
86 /* tell app to read it by triggering IRQ 1 (int 09) */
87 DOSVM_QueueEvent(1,DOS_PRIORITY_KEYBOARD,KbdRelay,NULL);
90 BYTE WINAPI INT_Int09ReadScan( BYTE*ascii )
92 if (ascii) *ascii = kbdinfo.ascii[0];
93 return kbdinfo.queue[0];