DOS ain't dead

> Unfortunately I can't apply Japheth's mod for QEMU 0.9.1 to QEMU 0.10.x
> "automatically" due to QEMU source code changes. So I have to ask Japheth
> for some help.

I added the changes to 0.10.2 and created a patch.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> qemukbd.dif

--- pckbd.co    Tue Apr  7 02:05:00 2009
+++ pckbd.c     Fri Apr 10 16:09:30 2009
@@ -26,6 +26,7 @@
 #include "pc.h"
 #include "ps2.h"
 #include "sysemu.h"
+#include "qemu-timer.h"
 
 /* debug PC keyboard */
 //#define DEBUG_KBD
@@ -126,6 +127,8 @@
     qemu_irq irq_kbd;
     qemu_irq irq_mouse;
     target_phys_addr_t mask;
+    QEMUTimer *kbd_timer;
+    uint32_t last_kbd;
 } KBDState;
 
 static KBDState kbd_state;
@@ -148,9 +151,13 @@
             if (s->mode & KBD_MODE_MOUSE_INT)
                 irq_mouse_level = 1;
         } else {
+            if (qemu_timer_pending(s->kbd_timer)) {
+                s->status &= ~KBD_STAT_OBF;
+            } else {
             if ((s->mode & KBD_MODE_KBD_INT) &&
                 !(s->mode & KBD_MODE_DISABLE_KBD))
                 irq_kbd_level = 1;
+            }
         }
     }
     qemu_set_irq(s->irq_kbd, irq_kbd_level);
@@ -168,6 +175,16 @@
     kbd_update_irq(s);
 }
 
+static void kbd_timer_proc(void *opaque)
+{
+    KBDState *s = opaque;
+    if (ps2_getcount(s->kbd))
+        kbd_update_kbd_irq( s, 1 );
+    else
+        kbd_update_kbd_irq( s, 0 );
+    return;
+}
+
 static void kbd_update_aux_irq(void *opaque, int level)
 {
     KBDState *s = (KBDState *)opaque;
@@ -279,17 +296,21 @@
 static uint32_t kbd_read_data(void *opaque, uint32_t addr)
 {
     KBDState *s = opaque;
-    uint32_t val;
 
     if (s->pending == KBD_PENDING_AUX)
-        val = ps2_read_data(s->mouse);
-    else
-        val = ps2_read_data(s->kbd);
+        return ps2_read_data(s->mouse);
+
+    if ( !qemu_timer_pending( s->kbd_timer )) {
+        if ( ps2_getcount( s->kbd ) > 1)
+            qemu_mod_timer( s->kbd_timer, qemu_get_clock(vm_clock) + ticks_per_sec / 50 );
+        s->last_kbd = ps2_read_data(s->kbd);
+    }
+
 
 #if defined(DEBUG_KBD)
-    printf("kbd: read data=0x%02x\n", val);
+    printf("kbd: read data=0x%02x\n", s->last_kbd);
 #endif
-    return val;
+    return s->last_kbd;
 }
 
 static void kbd_write_data(void *opaque, uint32_t addr, uint32_t val)
@@ -380,6 +401,8 @@
 
     s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s);
     s->mouse = ps2_mouse_init(kbd_update_aux_irq, s);
+    s->kbd_timer = qemu_new_timer(vm_clock, kbd_timer_proc, s);
+    s->last_kbd = 0;
 #ifdef TARGET_I386
     vmmouse_init(s->mouse);
 #endif
@@ -437,6 +460,8 @@
 
     s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s);
     s->mouse = ps2_mouse_init(kbd_update_aux_irq, s);
+    s->kbd_timer = qemu_new_timer(vm_clock, kbd_timer_proc, s);
+    s->last_kbd = 0;
 #ifdef TARGET_I386
     vmmouse_init(s->mouse);
 #endif
--- ps2.co      Tue Apr  7 02:05:00 2009
+++ ps2.c       Fri Apr 10 16:02:04 2009
@@ -134,6 +134,12 @@
     s->update_irq(s->update_arg, 1);
 }
 
+int ps2_getcount(void *opaque)
+{
+    PS2Queue *q = opaque;
+    return( q->count );
+}
+
 /*
    keycode is expressed as follow:
    bit 7    - 0 key pressed, 1 = key released
--- ps2.ho      Tue Apr  7 02:05:00 2009
+++ ps2.h       Fri Apr 10 16:02:30 2009
@@ -7,3 +7,4 @@
 void ps2_queue(void *, int b);
 void ps2_keyboard_set_translation(void *opaque, int mode);
 void ps2_mouse_fake_event(void *opaque);
+int ps2_getcount(void *);

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> qemukbd.dif

---
MS-DOS forever!