Re: 4168 "XRAM" in place of 4364 SRAM

From: Gerrit Heitsch <>
Date: Sat, 29 Jun 2013 18:18:29 +0200
Message-ID: <>
On 06/29/2013 11:44 AM, wrote:

>> If I was using it in a VIC-20 as RAM
>> expansion, then I would connect it to PHI2, knowing that nothing
>> will access it at the moment PH2 = (L).
> Hm.. I should be able to try this easily too. Actually I was thinking of something like that, as PHI2 (HI) is also used for allowing R/_W..

Check the datasheet if there is a minimum time between _RFSH going high 
and the next read or write access to the RAM happening. If yes, is it 
short enough for the VIC-20?


       Message was sent through the cbm-hackers mailing list
Received on 2013-06-29 17:00:04

Archive generated by hypermail 2.2.0.