Can you test with the latest version to see if this still affects you? If this still is a problem, any information on how to obtain the Guest OS in question that would also be helpful.
** Changed in: qemu (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1239008 Title: qemu fails to scroll screen on ^Vidmem output Status in QEMU: New Status in qemu package in Ubuntu: Incomplete Bug description: Pascal uses ^Vidmem for B800 console output. The terminal does not oblige the Pascal OS code to scroll the output. Virtualbox emulation works, so this must be a qemu bug. Using QEMU in KVM mode as Ubuntu LTS. Source line to trip bug(in theory pushes VideoMem up one line): procedure Scroll; //this is whats causing crashes. FIXME:Virtualbox not affected.QEMU BUG? begin if scrolldisabled then exit; if (CursorPosY >= 24) then begin //in case called before end of screen blank:= $20 or (TextAttr shl 8); Move((VidMem+(2*80))^,VidMem^,24*(2*80)); // Empty last line FillWord((VidMem+(24*2*80))^,80,Blank); CursorPosX:=1; CursorPosY:=23; update_cursor; end; end; To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1239008/+subscriptions