Hello,
I just downloaded dosemu for the first time this morning and I'm very
impressed with how well dosemu works. Of course after testing the basics
I went for the games.....
I've noticed that certain games do not work well with the keyboard in
dosemu. I'm not sure what is causing the failure, but it may be in
one of the keyboard/serv_*.c files. One of the programs that I was testing
a lot is Prince of Persia.
I've tried both dosemu 0.98.5 and 0.99.9 (dos and xdos) with every
combination of rawkeyboard and keybint:
$_rawkeyboard = (on) and $_keybint = (on)
$_rawkeyboard = (on) and $_keybint = (off)
$_rawkeyboard = (off) and $_keybint = (on)
$_rawkeyboard = (off) and $_keybint = (off)
I've got Linux 2.0.36, and am running MS DOS 6.22 in dosemu
With each test, Prince of Persia had the odd behaviour of partial
keyboard support. The ESC and SPACE keys worked, but the arrow keys
did not.
On an encouraging note, I have noticed the keyboard does not work
with "Alone in the Dark" using dosemu 0.98.5 -- but does work with
0.99.9
In Prince of Persia, these are the messages that I get when pressing a single
right arrow on the key pad. Dosemu was invoked with the following flags
to get this information:
dos -D+hk# -O 2>&1 | egrep -v "int 0x28|int 0x1c"
[00041579] KBD: putkey(PRESS, 004d, ' ') called
[00041582] KBD: writing to queue: bios_key=4d00 shift=0002 scan=0000004d
[00041586] KBD: read queue: bios_buffer=4d00 shiftstate_buffer=0002 raw=4d
[00041590] KBD: queuelevel=0
[00041593] 8042: scheduling IRQ1
[00041598] 8042: do_irq1(), VIF = 1
[00041602] 8042: read port 0x60 = 0x4d
[00041605] 8042: read port 0x60 read=0x4d
[00041614] 8042: read port 0x60 = 0x4d
[00041617] 8042: read port 0x60 read=0x4d
[00041621] INT15 0x4f CARRY=1 AX=864d
[00041624] HELPER: get_bios_key() returned 4d00
[00041639] KBD: putkey(RELEASE, 004d, ' ') called
[00041642] KBD: writing to queue: bios_key=0000 shift=0002 scan=000000cd
[00041646] KBD: read queue: bios_buffer=0000 shiftstate_buffer=0002 raw=cd
[00041650] KBD: queuelevel=0
[00041653] 8042: scheduling IRQ1
[00041656] 8042: do_irq1(), VIF = 1
[00041660] 8042: read port 0x60 = 0xcd
[00041663] 8042: read port 0x60 read=0xcd
[00041667] 8042: read port 0x60 = 0xcd
[00041670] 8042: read port 0x60 read=0xcd
[00041674] INT15 0x4f CARRY=1 AX=86cd
[00041677] HELPER: get_bios_key() returned 0000
One thing that seemed strange to me is that port 0x60 gets read from twice,
where I've nocticed that other in other programs that work port 0x60
is read only once.
Can anyone offer any suggestions on how to track down this problem? Is this
a known problem?
-Brian (Dying to play old DOS games on my Linux box)
