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<think>
Okay, I need to classify this bug report from QEMU. Let me read through it carefully.
The user is reporting that QEMU fails to scroll the screen on ^Vidmem output. They mention that Pascal uses ^VidMem for B800 console output and that the terminal isn't scrolling as expected. It's noted that VirtualBox works fine, so this must be a QEMU issue. The system in use is Ubuntu LTS with KVM mode.
Looking at the provided code snippet, it's part of a Scroll procedure. There are comments indicating thatVirtualBox doesn't have this problem, pointing towards a QEMU bug. The specific lines involve moving data from VidMem and filling a blank line, which suggests issues with how QEMU handles video memory or console output scrolling.
Now, considering the possible categories: mistranslation, assembly lowering, device, graphic, socket, network, KVM, boot, vnc, debug, files, permissions, performance, kernel, peripherals, hypervisor, and others.
The issue is related to screen scrolling in the console output, which points towards a graphics-related problem. Since it's about how the terminal handles VidMem, it likely involves QEMU's emulation of graphic hardware or display functions.
So, putting this together, the bug seems to fall under 'graphic' as it pertains to the graphical output and scrolling behavior in the virtual machine.
</think>
graphic
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