Public bug reported:
I took a shot at getting Windows 1.01 working. It doesn't support a
PS/2 mouse out-of-the-box but does support MS serial mice. It doesn't
seem to detect qemu's emulated msmouse.
When I run this command:
> qemu-system-i386 -nodefaults -hda my_windows1_hd.qcow2 -vga std
-serial msmouse -trace enable='serial*' -icount shift=10,align=on
I get this output (edited):
251908@1597626456.800452:serial_ioport_write write addr 0x04 val 0x01
251908@1597626456.800460:serial_ioport_read read addr 0x00 val 0x00
251908@1597626456.800462:serial_ioport_read read addr 0x00 val 0x00
[snip]
251908@1597626456.961641:serial_ioport_read read addr 0x00 val 0x00
251908@1597626456.961642:serial_ioport_read read addr 0x00 val 0x00
251908@1597626456.961644:serial_ioport_read read addr 0x00 val 0x00
251908@1597626456.961647:serial_ioport_write write addr 0x04 val 0x0b
251908@1597626456.961648:serial_ioport_read read addr 0x05 val 0x60
251908@1597626456.961684:serial_ioport_read read addr 0x05 val 0x60
251908@1597626456.961685:serial_ioport_read read addr 0x05 val 0x60
[snip]
251908@1597626457.045894:serial_ioport_read read addr 0x05 val 0x60
251908@1597626457.045895:serial_ioport_read read addr 0x05 val 0x60
251908@1597626457.045897:serial_ioport_read read addr 0x05 val 0x60
251908@1597626457.045932:serial_ioport_read read addr 0x00 val 0x00
The write of 0x01 and then 0x0b to reg 0x04 is the guest turning the RTS
line off then on. A real mouse will respond to this by sending 0x4d,
which is how the guest detects the mouse.
Reproducible in current stable-4.2 and 5.0 (debian's build). I am able
to get the guest to use a real passed-through serial mouse (with a minor
hack, separate bug filed for this)
** Affects: qemu
Importance: Undecided
Status: New
** Tags: msmouse
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https://bugs.launchpad.net/bugs/1891830
Title:
msmouse serial mouse emulation broken? No id byte sent on reset
Status in QEMU:
New
Bug description:
I took a shot at getting Windows 1.01 working. It doesn't support a
PS/2 mouse out-of-the-box but does support MS serial mice. It doesn't
seem to detect qemu's emulated msmouse.
When I run this command:
> qemu-system-i386 -nodefaults -hda my_windows1_hd.qcow2 -vga std
-serial msmouse -trace enable='serial*' -icount shift=10,align=on
I get this output (edited):
251908@1597626456.800452:serial_ioport_write write addr 0x04 val 0x01
251908@1597626456.800460:serial_ioport_read read addr 0x00 val 0x00
251908@1597626456.800462:serial_ioport_read read addr 0x00 val 0x00
[snip]
251908@1597626456.961641:serial_ioport_read read addr 0x00 val 0x00
251908@1597626456.961642:serial_ioport_read read addr 0x00 val 0x00
251908@1597626456.961644:serial_ioport_read read addr 0x00 val 0x00
251908@1597626456.961647:serial_ioport_write write addr 0x04 val 0x0b
251908@1597626456.961648:serial_ioport_read read addr 0x05 val 0x60
251908@1597626456.961684:serial_ioport_read read addr 0x05 val 0x60
251908@1597626456.961685:serial_ioport_read read addr 0x05 val 0x60
[snip]
251908@1597626457.045894:serial_ioport_read read addr 0x05 val 0x60
251908@1597626457.045895:serial_ioport_read read addr 0x05 val 0x60
251908@1597626457.045897:serial_ioport_read read addr 0x05 val 0x60
251908@1597626457.045932:serial_ioport_read read addr 0x00 val 0x00
The write of 0x01 and then 0x0b to reg 0x04 is the guest turning the
RTS line off then on. A real mouse will respond to this by sending
0x4d, which is how the guest detects the mouse.
Reproducible in current stable-4.2 and 5.0 (debian's build). I am
able to get the guest to use a real passed-through serial mouse (with
a minor hack, separate bug filed for this)
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