On 2019-02-05 08:52, Gerd Hoffmann wrote: > On Mon, Feb 04, 2019 at 04:10:37PM +0100, Thomas Huth wrote: >> >> Hi Gerd, >> >> I noticed that certain FreeDOS images are not working correctly anymore >> with the current version of QEMU, for example >> http://www.qemu-advent-calendar.org/2016/download/day10.tar.xz ... It >> aborts with: >> >> Error reading from drive C: DOS area: write-protection violation attempted >> >> I've bisected the issue, and it has apparently been introduced with: >> >> cd1bfd5ef336166b275a09dc9842542bf5e63ae3 >> seabios: update bios and vgabios binaries >> >> Any idea what might be going wrong here? > > Hmm, no. bisect seabios?
I haven't bisected yet, but it seems to be related to CONFIG_ATA_DMA=y in our roms/config.seabios-128k config file. When I switch that to "n", then the old FreeDOS disks are working again... Thomas