Public bug reported: I have qemu installed and running in linux and windows in linux i execute the following simple code in real mode of cpu in my vm 90 nop 90 nop 90 nop f1 ;this should conjure up my interrupt handler from ivt int 1 --------- end of code ---- it works properly in vbox,qemu linux,and even in my boot loder on a real platform it doeas not work fine in windows 10 (32 bit efi) based qemu --- all of the below was retyped there may be typo so onwards to the flawed software ********** for qemu-system-x86_64.exe ********** info version 4.2.0v4.2.0.11797-g2890edc853-dirty ********** for qemu-system-i386.exe ********** info version 4.2.0v4.2.0.11797-g2890edc853-dirty *********************************************** my startup code is "d:\programs\qemu\qemu-system-x86_64.exe" -m 16M -boot a -fda "d:\floppy.img" -cpu Nehalem -machine pc --- also same flaw if i change above section to "d:\programs\qemu\qemu-system-i386.exe"
** Affects: qemu Importance: Undecided Status: New -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1898954 Title: x86 f1 opcode hangs qemu Status in QEMU: New Bug description: I have qemu installed and running in linux and windows in linux i execute the following simple code in real mode of cpu in my vm 90 nop 90 nop 90 nop f1 ;this should conjure up my interrupt handler from ivt int 1 --------- end of code ---- it works properly in vbox,qemu linux,and even in my boot loder on a real platform it doeas not work fine in windows 10 (32 bit efi) based qemu --- all of the below was retyped there may be typo so onwards to the flawed software ********** for qemu-system-x86_64.exe ********** info version 4.2.0v4.2.0.11797-g2890edc853-dirty ********** for qemu-system-i386.exe ********** info version 4.2.0v4.2.0.11797-g2890edc853-dirty *********************************************** my startup code is "d:\programs\qemu\qemu-system-x86_64.exe" -m 16M -boot a -fda "d:\floppy.img" -cpu Nehalem -machine pc --- also same flaw if i change above section to "d:\programs\qemu\qemu-system-i386.exe" To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1898954/+subscriptions