On 06/27/2014 02:15 AM, Kajtár Zsolt wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > >> As before, I still don't have a clear picture of how exactly is this >> supposed to work. Either this or the (presumably simpler) approach with >> an EPROM and a 4040. I think I am not alone in this and that is one of >> the reasons nobody (including myself) haven't done it yet. > > It works the same way as the EPROW+counter approach. Except that the external > 6502 is the "counter" for addressing the EPROM. Which has the benefit of > inserting dummy fetches automatically to the bus when needed. This way you > could use any assembler/monitor to produce the code for the EPROM, without > tricks. And this 6502 could be used for the communication with the 6500/1 to > dump it's content too. An idea worth thinking about. You still have that clock divided by 2 problem though and have to make sure somehow that the two 6502 are not off by half a cycle. Gerrit Message was sent through the cbm-hackers mailing listReceived on 2014-06-28 18:01:15
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