Jan Kiszka wrote:
I have implemented the beep for vgabios-6b and it works on bochs but
fails on qemu.
With "-soundhw pcspk" i should hear it thru the hosts pc speaker, right?
Yep, that's how it should work. Mind to share your code and tell us
which test case you used?
FreeDOS floppy with "debug" command and assembly code:
mov ax,0e07
xor bx,bx
int 10
With the modified vgabios (see below) it does beep on bochs on vista,
but not on qemu.
- Sebastian
--- vgabios.c.orig 2009-05-12 22:24:22.000000000 +0200
+++ vgabios.c 2009-05-12 22:24:32.000000000 +0200
@@ -80,6 +80,9 @@
static void memcpyb();
static void memcpyw();
+static void delay_ticks();
+static void beep();
+
static void biosfn_set_video_mode();
static void biosfn_set_cursor_shape();
static void biosfn_set_cursor_pos();
@@ -1965,7 +1968,7 @@
switch(car)
{
case 7:
- //FIXME should beep
+ beep();
break;
case 8:
@@ -3765,6 +3768,57 @@
ASM_END
}
+ void
+delay_ticks(ticks)
+ Bit16u ticks;
+{
+ASM_START
+ pusha
+ push ds
+ xor dx,dx
+ mov ds,dx
+ mov cx,4[bp]
+ add cx,0x46c
+ adc dx,0x46e
+ sti
+delay_ticks_wait:
+ hlt
+ mov ax,0x46c
+ mov bx,0x46e
+ cmp dx,bx
+ jb delay_ticks_out
+ cmp cx,ax
+ ja delay_ticks_wait
+delay_ticks_out:
+ pop ds
+ popa
+ASM_END
+}
+
+void beep()
+{
+ASM_START
+ pusha
+ mov al,#0xb6
+ out #0x43,al
+ mov al,#0x33
+ out #0x42,al
+ mov al,#0x5
+ out #0x42,al
+ in al,#0x61
+ push ax
+ or al,#0x03
+ out #0x61,al
+ mov cx,#0x4
+ push cx
+ call _delay_ticks
+ pop cx
+ pop ax
+ out #0x61,al
+ popa
+ASM_END
+}
+
#ifdef DEBUG
void unimplemented()
{
--
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