Viewing Issue Advanced Details
|ID||Category [?]||Severity [?]||Reproducibility||Date Submitted||Last Update|
|07644||DIP/Input||Minor||Always||May 6, 2020, 09:36||May 10, 2020, 11:07|
|Tester||Klez||View Status||Public||Platform||MAME (Official Binary)|
|Assigned To||Resolution||Open||OS||MacOS X|
|Version||0.220||Fixed in Version||Build||64-bit|
|Summary||07644: pcpci: Serial port mouse [HLE] movement/clicks creates bogus input in emulated Ms-dos|
In the driver "pcipc" you can choose different HLE serial mouses, but all of them create strange input like keypreses(?) that end crashing the emulated OS with stack overflow. See attached screenshots showing weird input when mouse is moved or clicked in MSDOS 6.
This bug is present since many versions ago, not a recent regression. The oldest build that i´ve could test is v.203
My computer is running OSX, so i guess the input backend from my real mouse is SDL2
This happens with all supported mouses:
|Steps To Reproduce||
Start "pcipc" driver with a floppy bootdisk image with msdos and and optionally choose a mouse model. You can download a msdos bootdisk here: https://www.allbootdisks.com/download/dos.html
By default, pcipc driver uses "microsoft_mouse"
# mame pcipc -serport0 microsoft_mouse -flop1 bootdisk.ima
When dos is running, simply move your mouse or click primary/secondary button. Spurious input will appear and sometimes hang the emulated operative system with stack overflow.
|Affected Sets / Systems||pcpci|
pcipc.png (7,255 bytes) May 6, 2020, 09:36 Uploaded by Klez
Weird input when using mouse
pcipc2.png (8,905 bytes) May 6, 2020, 09:37 Uploaded by Klez
msdos crashed by simply moving mouse
|There are no relationship linked to this issue.|
May 10, 2020, 03:10
|I've had this issue with a number of the PC drivers, making them almost useless.|
May 10, 2020, 11:07
This bug is happening even if you start without any serial devices conected. Mouse input is still appearing, crashing emulated OS. If there is not an emulated serial mouse connected, how is this spurious input generated from my real mouse?
# mame64 pcipc -serport0 "" -serport1 "" -board4:fdc37c93x:lpt:centronics "" -flop1 bootdisk.ima -verbose
Crashes mame64 with "Caught unhandled exception" The verbose log does not show any other related info