> I have yet to figure out the correct way to switch on the display mode - > apparently the CRTC initialization sequence I found earlier is not > enough. I will keep looking in the ROM. OK, this is actually not true. I tried initializing the CRTC in a BASIC program which gave me strange results. But when we perform directly a SYS 35859 (which changes the five CRTC registers I wrote about before), the graphics display is correctly turned on. So the suspicion was correct - writing #$02 into CRTC register #$0C should turn on the graphics display. I think these are enough information to re-implement the HRE in VICE - as it turns out, the board usage is pretty straightforward. I will try to post ROMs on Zimmers later today. Regards, Michau. Message was sent through the cbm-hackers mailing listReceived on 2012-10-13 12:00:11
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