Rafał Cygnarowski wrote:
Hi!
I wanted to correct qemu emulation of keyboard under DOS as
guest OS, so I started with simple pascal program to check
what happen on guest DOS (and DOS) when I press up/down/left/right
keys.
The program was:
-- BEGIN test.pas --
program time; {$M 2048,0,0}
uses crt, dos;
var OldKeyInt : procedure;
procedure NewKeyInt; interrupt;
begin
write(Port[$60]); write(' ')
inline($9c); OldKeyInt;
end;
begin
getintvec($9, addr(OldKeyInt));
setintvec($9, @NewKeyInt);
keep(0);
end.
-- END test.pas --
and it look that qemu does not generate some codes before
pressing and after releasing arrow keys. For example pressing
up key on qemu looks like:
224 72 224 200
while without emulation it looks:
224 42 224 72 224 200 224 170.
It's true only for single keystrokes, but good for the
beginning.
So I tried to patch qemu for this and created following patch:
-- BEGIN sdl.patch --
[snipped patch]
-- END sdl.patch --
Unfortunatelly results of this patch completely suprised me. After this patch
my test program produces results witch are impossible to produce in normal
situation. Example output for UP key was:
224 224 72 88224 224 170.
What's wrong with this patch? What I'm doing wrong?
Regards,
What SDL version are you using? I noticed some strange keyboard behavior
with SDL 1.2.9 (Debian package), and this didn't happen when using SDL
1.2.10 (self-built). The problems were things like no Shift-Tab in
Windows, and "showkey" under Linux displaying strange keycodes when
using Shift-Tab.
Regards,
Oliver
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