RE: cbm 8032 motherboard + 4164

From: Baltissen, GJPAA (Ruud) <ruud.baltissen_at_apg.nl>
Date: Wed, 12 Oct 2016 06:36:57 +0000
Message-ID: <54F350D2C6501448A3EE14B7854C5FB53D658F3C@WSV10441N3.office01.internalcorp.net>
Hallo allemaal,


> But the 414256 (256K*4) does need 9 refresh cycles

Hmm, I got interrupted while writing this and forgot about it. So:
But the 414256 (256K*4) does need 9 refresh cycles. The problem of the C64/128: how to add that extra cycle? Otherwise one could have used SIMM modules instead of single ICs.  

IIRC adding extra cycles to a CBM is just a matter of piggybacking another counter. But, just popped up in my mind, IMHO unnecessary because I have some SMD 512 KB SRAMs laying around: 
- no refresh problems
- no cutting of wires etc., etc.
I will work it out if I have some time....


Met vriendelijke groet / With kind regards, Ruud Baltissen

www.Baltissen.org
De informatie in dit e-mailbericht is vertrouwelijk en uitsluitend bestemd voor de 
geadresseerde. Wanneer u dit bericht per abuis ontvangt, verzoeken wij u contact op te 
nemen met de afzender per kerende e-mail. Verder verzoeken wij u in dat geval dit 
e-mailbericht te vernietigen en de inhoud ervan aan niemand openbaar te maken. 
Wij aanvaarden geen aansprakelijkheid voor onjuiste, onvolledige dan wel ontijdige 
overbrenging van de inhoud van een verzonden e-mailbericht, noch voor daarbij 
overgebrachte virussen.

APG Groep N.V. is gevestigd te Heerlen en is ingeschreven in het 
handelsregister van de Kamer van Koophandel Limburg onder nummer 14099617


The information contained in this e-mail is confidential and may be privileged. 
It may be read, copied and used only by the intended recipient. 
If you have received it in error, please contact the sender immediately by 
return e-mail; please delete in this case the e-mail and do not disclose its 
contents to any person. We don't accept liability for any errors, omissions, 
delays of receipt or viruses in the contents of this message which arise as a 
result of e-mail transmission.

APG Groep N.V. is registered in the trade register of the Chamber 
of Commerce Limburg, The Netherlands, registration number: 14099617


       Message was sent through the cbm-hackers mailing list
Received on 2016-10-12 07:01:11

Archive generated by hypermail 2.2.0.