[Qemu-devel] [Bug 1530386] [NEW] command.com on win95 throws video mode out

[John Comeau]

Public bug reported:

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.

address@hidden:/usr/src/qemu-2.5.0/build$ cd /tmp/win95/SDL/
address@hidden:/tmp/win95/SDL$ 
/usr/src/qemu-2.5.0/build/i386-softmmu/qemu-system-i386 c.img 
address@hidden:/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

** Affects: qemu
     Importance: Undecided
         Status: New

** Attachment added: "qemubad.png"
   
https://bugs.launchpad.net/bugs/1530386/+attachment/4542636/+files/qemubad.png

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https://bugs.launchpad.net/bugs/1530386

Title:
  command.com on win95 throws video mode out

Status in QEMU:
  New

Bug description:
  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.

  address@hidden:/usr/src/qemu-2.5.0/build$ cd /tmp/win95/SDL/
  address@hidden:/tmp/win95/SDL$ 
/usr/src/qemu-2.5.0/build/i386-softmmu/qemu-system-i386 c.img 
  address@hidden:/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

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