FYI I experienced hangs with emm386.exe (with NOEMS but not HIGHSCAN)
using qemu 3.1.0 (from debian buster), but not with qemu 5.0.1
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https://bugs.launchpad.net/bugs/740895
Title:
qemu
Just discovered that `hdparm -a 128` works around the issue (it was 256
at boot).
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https://bugs.launchpad.net/bugs/1926231
Title:
SCSI passthrough of SATA cdrom -> errors & performance
Public bug reported:
qemu 5.0, compiled from git
I am passing through a SATA cdrom via SCSI passthrough, with this
libvirt XML:
It seems to mostly work, I have written discs with it, except I am
getting errors that cause reads to take abou
Note, this also occurs with freeDOS 1.2, at least.
Note 2, 4.2 stable does not exhibit the bug.
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https://bugs.launchpad.net/bugs/1896298
Title:
memory leak
Status in QEMU:
New
Bug
Public bug reported:
qemu trunk as of today leaks memory FAST when freedos' edit is running.
To reproduce, download:
https://www.ibiblio.org/pub/micro/pc-
stuff/freedos/files/repositories/1.3/cdrom.iso
Then run:
$ qemu-system-i386 -cdrom cdrom.iso
select your language then select "return to D
Public bug reported:
There are at least two older operating systems, being FreeBSD 2.2 and
FreeDOS 1.2, that misbehave when the change command is used on the IDE
CD drive, and work fine on a real machine. In both cases, changing the
CD causes the guest to either refuse to read the disc or appear
Just found the complete conversation regarding the abovementioned patch:
https://lists.nongnu.org/archive/html/qemu-devel/2009-08/msg01182.html
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https://bugs.launchpad.net/bugs/1895363
This virtualbox bug talks about the same thing, and also mentions qemu:
https://www.virtualbox.org/ticket/58
One of the people in the conversation created a patch for qemu which
wasn't accepted:
http://qemu.11.n7.nabble.com/PATCH-Fix-for-DOS-keyboard-problems-
td114076.html
** Bug watch added:
Public bug reported:
Most DOS-era IDEs from Borland (I have tried Borland C++ 2.0, Borland
C++ 3.1 and Turbo Pascal 7.1) exhibit strange responses to the keyboard.
Cursor keys are registered twice, so each press of a cursor key causes
the cursor to move twice. Also the other keys occasionally are
If I connect a serial mouse to the built-in serial port on an old
(kernel 2.4) box and go
stty -F /dev/ttyS0 1200 cs7
dd if=/dev/ttyS0 bs=1|hexdump -C
The bytes received/printed when the mouse is moved all have bit7=0.
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deve
** Summary changed:
- High bits(s) sometimes set high on rcvd serial bytes when char size < 8 bits
+ High bit(s) sometimes set high on rcvd serial bytes when char size < 8 bits
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https://
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
-ser
I will hopefully submit a patch for review soon.
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https://bugs.launchpad.net/bugs/1891829
Title:
High bits(s) sometimes set high on rcvd serial bytes when char size <
8 bits
Status
Public bug reported:
I *believe* (not confirmed) that the old standard PC serial ports, when
configured with a character size of 7 bits or less, should set non-data
bits to 0 when the CPU reads received chars from the read register.
qemu doesn't do this.
Windows 1.01 will not make use of a serial
Signed-off-by: Michael Slade
---
hw/display/vga.c | 50 +---
hw/display/vga_int.h | 2 ++
2 files changed, 40 insertions(+), 12 deletions(-)
diff --git a/hw/display/vga.c b/hw/display/vga.c
index 72181330b8..03d9181d58 100644
--- a/hw/display/vga.c
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