Hi, some time ago, I read a posting here that described the problems when trying to install OpenStep on qemu.
Running NeXT's OpenStep 4.2 OS on qemu was so far problematic, since the PS2 mouse driver provided with OpenStep gets confused by the emulation provided by qemu. This problem also occurs when using several other emulators (at least vmware AFAIK) as well as with some real PS/2 hardware devices. Fortunately, OpenStep not only supports PS/2 mice, but, in addition, also provides drivers for standard serial (RS232) and bus mouse protocol mice. Thus, I developed a busmouse device emulation for qemu. See the attached patch for qemu-0.8.0 that implements busmouse emulation. This currently disables the delivery of mouse events to the PS/2 emulation by commenting out the corresponding line in hw/ps2.c - there should probably be a command-line configurable option that selects the desired mouse emulation. I'm also not quite sure if I got the interrupt handling completely correct, so it would be great if I could get some feedback on this topic. Currently, the patch is only tested running qemu 0.8.0 on OS X using the Cocoa UI variant. During OpenStep installation, don't forget to remove the PS/2 mouse driver from the system configuration, otherwise the mouse driver in OpenStep defaults to PS/2. If you forget to remove the driver, you can boot OpenStep in single user mode (boot option "-s") and remove the corresponding entry from the Default.table resp. Instance0.table config files in /usr/Devices/System.config Using the CirrusLogic 5446 video driver provided by OpenStep, I currently can only run the system in either 640x480 or 800x600 resolution using 8 Bit grayscale - higher video resolutions or color depths generate a disturbed video image (didn't test on a non OS X system so far, will check the behaviour under X11). This is something I'll be looking into during the next weeks, if time permits. I also couldn't find a driver for the emulated PCI NE2000 card, so networking doesn't work. The SB16 emulated by qemu is supported by an OpenStep driver, but I didn't test that so far. OpenStep 4.2 seems to be quite stable running under qemu - I compiled C/ObjC code for several hours without a problem. If you have any questions or comments regarding this patch, don't hesitate to contact me. Michael -- Dr. rer. nat. Michael Engel - [EMAIL PROTECTED] University of Marburg - Dept. of Mathematics and Computer Science Hans-Meerwein-Str. - D-35032 Marburg, Germany Phone: +49 6421 / 28 21562 - Fax: +49 6421 / 28 21573
qemu-0.8.0-openstep-busmouse.diff.gz
Description: GNU Zip compressed data
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