RE: PLA replacement for C64

From: Baltissen, GJPAA (Ruud) <>
Date: Mon, 4 May 2015 06:26:49 +0000
Message-ID: <>
Hallo Jim,

> So, you'd need to add inputs in addition to outputs.

Oops, I completely forgot about the inputs.

>The unit has 7 additional I/O lines

- 1 input for telling the PLA to use the extended mode. Instead of using a jumper, using two solder pads could be an option: less room, cheaper.
- 4 inputs for the address lines A8..A11  to split $D000/$D3FF and $D400/$D7FF in two parts each. 
- 1 output for the $D100/$D3FF area
- 1 output for the $D500/$D7FF area

These four inputs spoil the idea a bit but I can blame myself for it, I should have thought it over a bit more before answering. 

With kind regards / met vriendelijke groet, Ruud Baltissen

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 2015-05-04 07:00:05

Archive generated by hypermail 2.2.0.