On 10/20/2013 02:45 PM, Michał Pleban wrote: > > Then, you have two lines from the CIA chip at the expansion port - SP > and CNT. This is CIA's shift register. So instead of a latch sitting at > /EXRAM, you can tie a resettable shift register to these lines and latch > a correct banking value through the shift register from CIA. I haven't > searched the TTL catalog to see if such chip exists, but probably it > does; if not, as a last resort you can cascade two 4-bit counters. Take a look at the 74LS194. 4Bit shift-Register with serial in _and_ parallel load and resettable. Should cover what you need if you use 2 of them. Gerrit Message was sent through the cbm-hackers mailing listReceived on 2013-10-20 13:01:57
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