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Coco Sound/Speech cartridge
Posted: Thu Aug 06, 2015 1:11 pm
by paul
Not sure if this is Dragon compatible, but I was asked to upload images here, so here you go
Re: Coco Sound/Speech cartridge
Posted: Thu Aug 06, 2015 3:04 pm
by robcfg
Thanks for the pictures!
It looks quite interesting. There is a similar cartridge for the Dragon but I'm not aware of anyone who has it, so yours may be useful for studying it.
Re: Coco Sound/Speech cartridge
Posted: Thu Aug 06, 2015 3:51 pm
by paul
There's stuff on the internals of the one I have here:
http://tlindner.macmess.org/?page_id=96
The PIC7040 is a microcontroller, apparently. Something I read said it was a ROM, but it's a microcontroller with built-in ROM. There's no ROM to extend BASIC. There's a dump of the microcontroller's ROM on the above link. I think someone would have to be really keen to try to reproduce this... It looks quite different to the Dragon Speech & Sound cartridges listed on this site, although it uses the same type of key ICs.