Re: Calc Result ROM

I'm not sure one eprom will do. There are three 8k slots (banks) on a single cartridge and a separate chip select for each. So you would have to allocate 24k for each rom "set", or add additional logic to select which bank you want the 8k rom to appear in. But then you'd be limited to 8k. I think you would need 3 eproms so you could individually select the rom for each 8k bank.

Alternately, you could make a cartridge with 24k ram and the ability to map in rom, or just copy rom to ram somehow.

Steve


On May 6, 2012, at 10:18 AM, "Michal Pleban" <lists@michau.name> wrote:

> How about we created a CBM-II super-cartridge, by putting a 512kB EPROM filled with all known cartridge images, plus some switches to select current cartridge? The PCB for this would be trivial, and the same could be done for the PET too.
> 
> Michau
> 
> 
> 
> -- Sent from my Palm Pre
> 
> On 6 May 2012 15:31, Steve Gray <sjgray@rogers.com> wrote: 
> 
> Yes, agreed.  My offer is just a shameless attempt to make my site better :-)
> On a serious note, i tried submitting a pet rom (waterloo basic) a while back and it ended up in the bit bucket...  And i still dont see info on where to upload files.
> 
> Steve
> 
> 
> On May 6, 2012, at 4:26 AM, "A.Fachat" <afachat@gmx.de> wrote:
> 
>> Probably the cbm archive at zimmers would be a good place to put the files
>> 
>> André
>> -- 
>> Diese Nachricht wurde von meinem Android-Mobiltelefon mit K-9 Mail gesendet.
>> 
>> 
>> 
>> Steve Gray <sjgray@rogers.com> schrieb:
>> Hi,
>>  
>> I have the CalcResult/WordResult but no VisiCalc... In any case, I can host any rom files on my CBM-II site if needed.
>>  
>> Steve 
>> 
>>  
>> ----- Original Message -----
>> > From: "Hoffmann-Vetter, Martin" <martinHV@arcor.de>
>> > To: cbm-hackers@musoftware.de
>> > Cc: 
>> > Sent: Saturday, May 5, 2012 5:23:28 PM
>> > Subject: RE: Calc Result ROM
>> > 
>> > Hello,
>> > 
>> >>  I can probably dump one of my carts. However I believe the cartridge
>> >>  ROM only serves as a copy protection, as it contains a PET (?)
>> >>  character ROM that as far as I know the CBM-II won't be able to use
>> >>  in a meaningful way.
>> > 
>> > Can we collect all the protection roms? If i remember, the VisiCalc use the
>> > firmware rom of the printer 2022/3022 with part number 901472-
>>  04.
>> Witch rom
>> > used WordPro?
>> > 
>> > Martin
>> > 
>> > 
>> >        Message was sent through the cbm-hackers mailing list
>> >
>> 
>>        Message was sent through the cbm-hackers mailing list


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