graphic: 0.117
semantic: 0.104
device: 0.101
other: 0.091
debug: 0.082
boot: 0.078
socket: 0.071
PID: 0.066
performance: 0.063
vnc: 0.060
files: 0.060
permissions: 0.050
network: 0.044
KVM: 0.011
debug: 0.634
graphic: 0.146
files: 0.046
other: 0.029
boot: 0.028
PID: 0.022
network: 0.020
device: 0.017
semantic: 0.013
socket: 0.013
vnc: 0.012
performance: 0.012
permissions: 0.006
KVM: 0.003

command.com on win95 throws video mode out

on a presumed-good copy of Windows 95 obtained from http://forum.xda-developers.com/showthread.php?t=1960870, the operating system boots successfully and shows up fine, but as soon as I double-click the MS-DOS icon, the window, while remaining the same size, goes to a different resolution and only shows a small portion of what it did, with strange colors and artifacts. tried first with the Debian 2.5 package, then with latest cvs sources, then with the 2.5.0 release, all the same problem.

jcomeau@aspire:/usr/src/qemu-2.5.0/build$ cd /tmp/win95/SDL/
jcomeau@aspire:/tmp/win95/SDL$ /usr/src/qemu-2.5.0/build/i386-softmmu/qemu-system-i386 c.img 
jcomeau@aspire:/tmp/win95/SDL$ /usr/src/qemu-2.5.0/build/i386-softmmu/qemu-system-i386 --version
QEMU emulator version 2.5.0, Copyright (c) 2003-2008 Fabrice Bellard



verified that the problem does not exist on bochs version 2.6-5 Debian package. I first had to convert the image from qcow to raw: qemu-img convert -O raw c.img c_raw.img

bxrc file:

megs: 32
vga: extension=vbe
romimage: file=$BXSHARE/BIOS-bochs-latest
vgaromimage: file=$BXSHARE/VGABIOS-lgpl-latest
cpu: count=1, ips=100000000, reset_on_triple_fault=1
boot: disk
ata0-master: type=disk, path="/tmp/c_raw.img"
#info: action=report
#debug: action=report
log: /tmp/bochs-win95.log
mouse: enabled=0
vga_update_interval: 150000

command line: bochs -q -f /tmp/bochs.bxrc

screenshot attached.

Can you still reproduce this issue with the latest version of QEMU?

[Expired for QEMU because there has been no activity for 60 days.]