Re: [Qemu-devel] How to Simulate hardware that counts scanlines?

[Paul Brook]

> Seems nobody here has any ideas either, which is kind of hard to believe. I
> don't know if this would work, but one idea I had was to divide up the gui
> timer into 260 slices (that's the # of scanlines the hardware expects), and
> simply update the hardware register that counts the scanlines this way.

No. The gui timer (in fact the whole display mechanis) is independant of the 
emulated VGA hardware. If you need accurate scanline emulation you just treat 
it like any other timer.

qemu doesn't currenly provide high-fidelity timer emulation, but that's a 
different problem altogether.

Paul