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Old 17 December 2007, 13:24   #12
lvd
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Join Date: Dec 2007
Location: Moscow/Russia
Posts: 20
Quote:
Originally Posted by coze View Post
Welcome to our fine boards Lord Vader ! I'm sure Zetro will take pleasure to show you around, but before him I'ld like to show you zetro's fine Musashi Tornado project, which may be of interest to you, and will breath new life into our A600's once completed !
Read a little about it. My board won't work with 14MHz 68000 since it is clocked by cpu clock pin and has very tight memory cycles, with both refresh and access cycles being made during one 68000 bus cycle. Running it at 14Mhz will just overwhelm DRAM chips. My aim was not to delay 68000 cycles, just because it is impossible ($200000-$9FFFFF area is /DTACK'ed by chipset, but bus is floating).
For 14MHz 68000, one must re-invent DRAM controller with wait cycles/whatsoever.
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