Just trawling the ebay when I saw this:
https://www.ebay.co.uk/itm/175611364802
* ICL ~1984
* PSION
* 68008
So, OPD piggy-back board?
OPD piggy-back board?
- Chr$
- QL Wafer Drive
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Re: OPD piggy-back board?
Yes, that's the OPD CPU daughter board, which contains the 68008 CPU, 4 PROM chips and one of the 2 TMS speech chips (plus a few 74x logic chips).
The speech chip is the one that generates the actual speaking (as used in the BBC micro). The other speech chip, which contains the vocabulary of words, is normally underneath it on the main m/b. I've just recently been exploring dumping the contents of the OPD vocab chip using a BBC Model B.
The speech chip is the one that generates the actual speaking (as used in the BBC micro). The other speech chip, which contains the vocabulary of words, is normally underneath it on the main m/b. I've just recently been exploring dumping the contents of the OPD vocab chip using a BBC Model B.
https://QXL.WIN
Collector of QL related computers, accessories and QL games/software.
Ask me about felt pads - I can cut them to size and they have proved excellent for mdv data recovery.
Collector of QL related computers, accessories and QL games/software.
Ask me about felt pads - I can cut them to size and they have proved excellent for mdv data recovery.
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Re: OPD piggy-back board?
Hi,
Just need to take the QL 68008 CPU out and fit the OPD board, write a driver to drive the speech rom, or maybe have a QL OPD....
Just need to take the QL 68008 CPU out and fit the OPD board, write a driver to drive the speech rom, or maybe have a QL OPD....
Last edited by Derek_Stewart on Thu Mar 07, 2024 12:09 am, edited 1 time in total.
Regards,
Derek
Derek
- Chr$
- QL Wafer Drive
- Posts: 1316
- Joined: Mon May 27, 2019 10:03 am
- Location: Sachsen, Germany
- Contact:
Re: OPD piggy-back board?
https://QXL.WIN
Collector of QL related computers, accessories and QL games/software.
Ask me about felt pads - I can cut them to size and they have proved excellent for mdv data recovery.
Collector of QL related computers, accessories and QL games/software.
Ask me about felt pads - I can cut them to size and they have proved excellent for mdv data recovery.