[Bug 1180923] Re: unused memory filled with 0x00 instead of 0xFF
I know this is expired but it's still a problem in qemu 7.0.0. For example, when running MS-DOS 6.22, "mem" reports 0K of upper memory, and memmaker fails to run, complaining that it could not allocate any. I'd love to know if there's a workaround. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1180923 Title: unused memory filled with 0x00 instead of 0xFF Status in QEMU: Expired Bug description: Qemu, ever since it was made (so, since 2003), has this problem in DOS (either PC-DOS or MS-DOS and partly Windows 9x) not recognizing the memory available when the memory is filled with 0x00 but when it is filled with 0xFF it gets recognized properly, where should I patch qemu to solve this memory problem? To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1180923/+subscriptions
[Bug 1884017] Re: Intermittently erratic mouse under Windows 95
Weirdly, this problem doesn't occur when running qemu on macOS (10.15.5). It only happens on my PC running openSUSE Tumbleweed. However, even on that PC, it only affects Windows 95, and not Windows 98, or other operating systems. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1884017 Title: Intermittently erratic mouse under Windows 95 Status in QEMU: New Bug description: The mouse works fine maybe 75-80% of the time, but intermittently (every 20-30 seconds or so), moving the mouse will cause the pointer to fly around the screen at high speed, usually colliding with the edges, and much more problematically, click all the mouse buttons at random, even if you are not clicking. This causes random objects on the screen to be clicked and dragged around, rendering the system generally unusable. I don't know if this is related to #1785485 - it happens even if you never use the scroll wheel. qemu version: 5.0.0 (openSUSE Tumbleweed) Launch command line: qemu-system-i386 -hda win95.qcow2 -cpu pentium2 -m 16 -vga cirrus -soundhw sb16 -nic user,model=pcnet -rtc base=localtime OS version: Windows 95 4.00.950 C I have made the disk image available here: https://home.gloveraoki.me/share/win95.qcow2.lz Setup notes: In order to make Windows 95 detect the system devices correctly, after first install you must change the driver for "Plug and Play BIOS" to "PCI bus". I have already done this in the above image. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1884017/+subscriptions
[Bug 1884017] [NEW] Intermittently erratic mouse under Windows 95
Public bug reported: The mouse works fine maybe 75-80% of the time, but intermittently (every 20-30 seconds or so), moving the mouse will cause the pointer to fly around the screen at high speed, usually colliding with the edges, and much more problematically, click all the mouse buttons at random, even if you are not clicking. This causes random objects on the screen to be clicked and dragged around, rendering the system generally unusable. I don't know if this is related to #1785485 - it happens even if you never use the scroll wheel. qemu version: 5.0.0 (openSUSE Tumbleweed) Launch command line: qemu-system-i386 -hda win95.qcow2 -cpu pentium2 -m 16 -vga cirrus -soundhw sb16 -nic user,model=pcnet -rtc base=localtime OS version: Windows 95 4.00.950 C I have made the disk image available here: https://home.gloveraoki.me/share/win95.qcow2.lz Setup notes: In order to make Windows 95 detect the system devices correctly, after first install you must change the driver for "Plug and Play BIOS" to "PCI bus". I have already done this in the above image. ** Affects: qemu Importance: Undecided Status: New ** Tags: qemu-system-i386 -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1884017 Title: Intermittently erratic mouse under Windows 95 Status in QEMU: New Bug description: The mouse works fine maybe 75-80% of the time, but intermittently (every 20-30 seconds or so), moving the mouse will cause the pointer to fly around the screen at high speed, usually colliding with the edges, and much more problematically, click all the mouse buttons at random, even if you are not clicking. This causes random objects on the screen to be clicked and dragged around, rendering the system generally unusable. I don't know if this is related to #1785485 - it happens even if you never use the scroll wheel. qemu version: 5.0.0 (openSUSE Tumbleweed) Launch command line: qemu-system-i386 -hda win95.qcow2 -cpu pentium2 -m 16 -vga cirrus -soundhw sb16 -nic user,model=pcnet -rtc base=localtime OS version: Windows 95 4.00.950 C I have made the disk image available here: https://home.gloveraoki.me/share/win95.qcow2.lz Setup notes: In order to make Windows 95 detect the system devices correctly, after first install you must change the driver for "Plug and Play BIOS" to "PCI bus". I have already done this in the above image. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1884017/+subscriptions
