Re: [Etherboot-developers] qemu

[<ke...@et...>]

>Just as a check I ran qemu on 5.3.10 .*dsk images, before my changes.
>The results were:
>
>..dsk	booted ok
>..zdsk	created an interesting pattern on the simulated VGA screen
>	and went looping somewhere
>
>Some possible conjectures about this.

Conjectures wrong. The problem was that when making the floppy image for
emulation you have to pad the image or the emulator will run into
problems reading the tail blocks. Padding it out to the full size of a
floppy to be safe made 5.3.10 .zdsk work. Even 5.3.12 .zdsk works, but
the video was slightly messed up, which suggests that there is some
writing into the video RAM area, which suggests a miscalculation in
5.3.12 as below. This may be the .zrom problem.

>3. There is some error in the calculation of space needed for the
>decompression in both 5.3.10 and my versions.