FrancoisLanciault wrote: ↑Mon Apr 29, 2024 12:41 am
Ok I understand better how everything works. Not the answer I would have hope but I will find another QL to use with my QIMSI Gold when it arrives eventually. I was hoping the support code to drive the keyboard and such was provided at address 0, so the 68008 would boot using the special code.
Technically, I could implement this - but I don't understand your reason. Do you not own your QL ROMs anymore?
FrancoisLanciault wrote: ↑Mon Apr 29, 2024 12:41 am
Further questions: what video modes are supported ?
They have been listed in the manual.
FrancoisLanciault wrote: ↑Mon Apr 29, 2024 12:41 am
Finally, does the processor speed slows down when displaying high color mode like in the Q68 ?
The highcolor modes specified in the manual (512x256 and 512x384 at 65536 colours) do not slow down QIMSI Gold operation.
Except - of course - the screen memory operations themselves, which move much more data than in the QL modes.
Also the 1024x768 resolution modes are fine - but in lower colour.
If you go beyond the modes listed in the manual, you get the "slow" Q68 modes.
Please keep in mind that QIMSI Gold is a low cost, very small form factor interface. It can outperform GoldCard and SuperGoldCard, but not play in the 68060 league.
Technically, Qzero has more hardware ressources and will probably be my "workhorse" toward higher speed.