The Sinclair QL Forum

Just picked up a copy of "Microprocessor Systems Design: 68000 Family Hardware, Software, and Interfacing" by Alan Clements (1997 Ed). It appears to be discounted today 2nd April along with others around the same price eg: https://www.ebay.co.uk/itm/165378570318 et al. Also 1987 edition ca...

36.864MHz cool

Price on microdrive ULA just gone up

Update: But only 9 left...

I found some 33MHz Z8S18033 - they passed all the test that I can throw at them - and being CMOS - you can run these at 20Mhz too :-) guy was selling them in Tubes of 10 I was going to build something like https://www.tindie.com/products/tindiescx/sc126-z180-sbc-motherboard-kit/ Z8S18020 is OK for ...

Good to hear they are legit, happened upon them when looking for Z8S18020 CPUs (20Mhz Z80 *). Have bought a few items from same seller, well priced too, some stuff very cheap (HY29F400BT Flash). Has some other interesting 68000 stuff (68060/68030/68302/68340**). *Update: BTW beware Z80 DIP40 20MHz P...

Coincidentally, I just ordered one of these in the US last week. Only $34. I am thinking of making a universal input panel for it as part of my rack system, so it can auto switch between multiple sources. Just ordered one, £32.74 (incl VAT & postage with current discount: https://www.ebay.co.uk...

https://www.ebay.co.uk/itm/223046561834

Never seen one with markings shown (Plessey) and dated 1990 week 29.

Don't think the Commodore 64 or Atari used them though

anon wrote:I purchased about 50 MCS-48 samples when designing my programmer, and blew a quarter of them discovering this.

Sounds like number 13 was when the penny dropped...

Judging by the prices for the other items listed https://www.ebay.co.uk/sch/sorethumbsal ... pg=&_from=

I doubt £58.97 (no images/details) bought much

But honestly, just getting a replacement membrane makes more sense to me than extending the wiring. I agree with this. A new membrane is a pretty cheap upgrade, and the replacement ones feel a lot more durable than the Sinclair ones (I seem to recall they were fragile even back in the '80s). Errrr,...

Wow, plain QL went for about £100, but Schon keyboard QL went for £378 !

https://www.ebay.co.uk/itm/144432489367 ... SwdVliGRiE