From: Marko Mäkelä (marko.makela_at_hut.fi)
Date: 2006-07-26 08:46:52
On Wed, Jul 26, 2006 at 04:36:16AM +0000, William Levak wrote: > Anders Carlsson wrote: > >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. Isn't the character cell something like 8 by 13 pixels on the CBM 600 and 700 series (B series)? Only the P500 (CBM 500) is equipped with a VIC-II chip (8 by 8 character cell matrix). > 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. They could have drilled holes on the circuit board, like on some PETs to prevent a RAM expansion, couldn't they? :-) > >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? There might have been a cartridge containing cassette routines. Has anyone come across it? Marko Message was sent through the cbm-hackers mailing list
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