From: William Levak (wlevak_at_sdf.lonestar.org)
Date: 2006-07-26 06:36:16
On Tue, 25 Jul 2006, Anders Carlsson wrote:
> Date: Tue, 25 Jul 2006 21:38:24 +0200
> From: Anders Carlsson <anders.carlsson@sfks.se>
> Reply-To: cbm-hackers@ling.gu.se
> To: cbm-hackers@ling.gu.se
> Subject: ROM 901225-01 and CBM-II series
>
> Hello.
>
>> From what I understand, the ROM with part number 901225-01 is better
> known as the C64 character set?
>
> Now, here is something odd. I have obtained two cartridges for the
> CBM-II series (CBM 700/B256). Both cartridges supposedly contain
> Word Result from Handic Software, printed label and ditto circuit.
>
> Both these cartridges contains a socketed ROM, with part number 901225-01.
> I suppose one needs a disk with the actual software, but why would the
> cartridge contain a character ROM? In particular as the CBM-II series
> generates its characters out of Kernel if I understand correctly.
>
> Would the application software (that I don't have) somehow utilize the
> character ROM in the cartridge as a copy protection? That is my best
> guess, and that Commodore/Handic used a ROM chip they had plenty of.
That is a possibility, but I can think of others:
The cartridge could work in a mode where the onboard character set is
swithched out, in which case it would need to supply another character
set.
I have seen some Commodore equipment that had random ROM's inserted in
sockets, just to fill the empty socket. I have no explanation of why they
felt they could not leave the socket empty.
> Besides, does anyone know if there are autostarting cartridges for the
> CBM-II series, or do all require disk software and the cartridge only
> fills an auxillary function?
>
> --
> Anders Carlsson
>
> Message was sent through the cbm-hackers mailing list
>
wlevak@sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org
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