Re: Multi-ROM built, what now?

From: Michał Pleban <>
Date: Thu, 06 Jun 2013 09:23:46 +0200
Message-ID: <>

Baltissen, GJPAA (Ruud) wrote:

>> It is working right now but requires access to the BASIC ROM
>> for reprogramming, ...
> I don't understand that, please explain.

You need some address space where the Flash ROM is visible for writes.

CHAROM cannot be used because it has 4kB address space - you lose one
address line.

KERNAL cannot be used (so far) because of the spurious pulses on the CS
line. These result in spurious pulses on the Flash WE line, which mess
up with the magic write sequences.

So, at the moment, I am forced to access the Flash at the BASIC ROM
location for writes.


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Received on 2013-06-06 08:00:04

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