On Wed, Jan 7, 2026 at 8:00 PM Andrew Randrianasulu <randrianasulu%gmail.com@localhost> wrote: > > Was looking for Sparcstation-20 proms to test with cg14 enabled qemu > > found this project; > > https://github.com/mdehling/cg14-vesa-mod > > https://github.com/artyom-tarasenko/qemu/ - branch cg14 > https://github.com/artyom-tarasenko/qemu/commit/1b1d8b87619e613b059766e6e54687b027fb6e3f.diff > > https://github.com/artyom-tarasenko/qemu/commit/b297821755e68381e7753d877a7912bebe9271d8.diff > > but device cg14 not on list so you need to start it like this: > > build/qemu-system-sparc -M SS-20 -g 1152x900 > cg14_realizefn 1152, 900 > > Of course default openbios does not know how to output to that, so I'm > trying this Sun PROM now ... It tries to boot my NetBSD install but it faults somewhere along the way: build/qemu-system-sparc -M SS-20 -g 1152x900 -bios ~/Desktop/ss20-2.25.bin -cpu "TI SuperSparc 50" -hda /mnt/zip/home/guest/QEMU/sparc-netbsd-15g-compressed-r1.qcow2 cg14_realizefn 1152, 900 CG14: control register (0x5a) has unimplemented bits set CG14: readb from reg 1000 CG14: writeb 0x00 to reg 1000 CG14: writeb 0x01 to reg 1000 CG14: readb from reg 1000 CG14: readb from reg 1001 CG14: writeb 0x01 to reg d CG14: readl 00000000 from reg 20c CG14: writeb 0x02 to reg 100 CG14: readl 00000000 from reg 20c CG14: readb from reg 200b CG14: readb from reg c CG14: writeb 0x00 to reg c CG14: writeb 0x02 to reg 100 CG14: readl 00000000 from reg 20c CG14: readb from reg 200b CG14: readb from reg c CG14: writeb 0x00 to reg c https://mastodon.online/@Andrew_R/115854999356998946