On Wed, 6 Sep 2000, Nicolas Welte wrote: > Many thanks for the great pictures and the chip list, Bo! The LR video > board obviously uses a normal Hitachi 68B45 video chip, so my guess is > that the 8563 was used on the HR (high-resolution) board of the > workstation machine. Do you know someone who owns a 900 workstation? > Maybe the guy who sold you this 900 server? I'd really like to know > about the HR video board :-) I'll second that, Bo - damn nice pictures! Change the "video chip" section in your tech specs to read 6845. I'm going to put the case that the HR video board doesn't exist and in fact never existed. When Bil Herd was put onto the C128 project, he was offered the 8563 from the then-abandoned Z machine project, which was still in a very early stage of development and didn't work much at all. The chip had appalling yield rates and I doubt very much there are any production-style HR boards. There may be a *handful* of development prototypes, but these will have the flakiest 8563s you've ever seen and are *extremely* unlike to work at all now. Fortunately, if you ever did come across such a board, you could always substitute the 8563 from a "modern-day" C128. I think Commodore kept the bus timing the same, which explains the awful software interface with the VDC on the C128. Richard -- Richard Atkinson Software Engineer Tenison Technology EDA Ltd http://www.tenisontech.com/ - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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