Re: Multi-ROM built, what now?

From: Pete Rittwage <>
Date: Wed, 5 Jun 2013 15:44:52 -0400 (EDT)
Message-ID: <>
On Wed, June 5, 2013 3:23 pm, Mike Naberezny wrote:
> Hi Ruud,
> On 6/2/13 11:20 PM, Baltissen, GJPAA (Ruud) wrote:
>> I finished building the hardware enabling me to choose a ROM
>> combination.
>> This can be done using an extra 6522. This also means I can implement a
>> ROM
>> that needs more than the standard 16 KB using the paging method. But now
>> the question: where can I use it for?
> A bank-switched ROM could be used to enhance JiffyDOS 64:
>   - Eliminate the switch.  Most JiffyDOS users have a mechanical switch to
> select between JiffyDOS and the stock KERNAL.  Instead of the switch, have
> the
> machine always start up with JiffyDOS and add a new command to bank in the
> stock KERNAL.  It would be used like "GO 64" on the C128.
>   - Restore tape support.  JiffyDOS does not have tape support because the
> routines were replaced with other features.  It would be nice to have tape
> support without having to switch back to the stock KERNAL.
>   - Add JiffyMON.  This is a nice machine language monitor for use with
> JiffyDOS that is loaded from disk.  According to the manual, it loads into
> the
> RAM underneath the KERNAL ROM.  Put it in the banked ROM instead so that
> it is
> always available.

Isn't it already possible to do stuff like this with EasyFlash?  I mean
the whole Multi-ROM thing is already possible without hardware mods, isn't


       Message was sent through the cbm-hackers mailing list
Received on 2013-06-05 20:02:51

Archive generated by hypermail 2.2.0.