Re: Nameserver trouble and VIC-20 cart update

From: Marko Mäkelä (
Date: 2001-02-21 08:15:11

On Tue, 20 Feb 2001, MagerValp wrote:

> RB> A question: presuming that this project is freeware, is it
> RB> possible to get the SCH but then the one with the logic that is
> RB> replaced by the GAL?
> RB> This enables me to build the circuit using normal TTL-ICs.
> I'd be interested in this too. SMD is a bit out of my league.

The schematics, the logic equations and the software will be open source.
A hobbyist-friendly version of the circuit would probably use a MC6821 PIA
and some glue logic.  The software requires 9 programmable output pins: 8
for ROM bank selection and 1 for disabling the ROM.  Some more outputs can
be used for disabling certain RAM banks and for RAM write protection, but
they are not absolutely necessary.


This message was sent through the cbm-hackers mailing list.
To unsubscribe: echo unsubscribe | mail

Archive generated by hypermail 2.1.1.