Search found 299 matches
- Wed Dec 01, 2021 4:41 pm
- Forum: The Off-Topic Section
- Topic: New film - LEO: the story of the world’s first business computer
- Replies: 1
- Views: 54
I read about that a few years ago in the IET magazine that does articles about forgotten or ignored engineering. Shame an article about the Rife microscope and machine he developed to kill viruses and bacteria that cures our currently incurable diseases hasn't been done yet. Here is more on LEO. htt...
- Wed Dec 01, 2021 10:57 am
- Forum: Online Auctions
- Topic: Large lot of printed ephemera
- Replies: 3
- Views: 143
I'm always doing that. If you put a maximum bid it is always beaten and if you wait for the end you forget but at least it didn't cost anything.RichardCGH wrote:Typically I missed the end of biddingI'll survive.
Making some progress after getting a Minerva ROM but most RAM showing faulty randomly. Have ordered a ULA chip IC22 to see if that works Have you checked other threads of people repairing QLs? There are lots of fundamental things to check like corrosion & chip seating. If your QL was working wh...
The arrows look good and the keyboard fits perfectly like it was made for it. Nice one. Did you fit the two transistors for the single key press or is that still on your to do list?Andrew wrote:And it works. Still not happy with those decals, but they'll do for now.
Yes it could be. It was cheap probably because it is not English. I found that the AE key is from either Danish, Norwegian, Icelandic, or Faroese.Andrew wrote:The LOCAL key and the fact that it's serial makes me believe that it's a keyboard from some sort of old terminal.
Has anybody seen keyboards like this? It has a big PCB with old 74 series logic on the back and it came with a circuit diagram that has the output as serial. I was going to just use the switch board like Andrew but now I think the serial interface is a better option with a PIC that gives more flexib...
- Sun Nov 14, 2021 2:42 pm
- Forum: Hardware
- Topic: Reading Sinclair ROM's w/TL866 II+
- Replies: 3
- Views: 235
So I was able to read it with the Hitachi HN27256P setting but it results in a 32K image whereas it should be a 16K image. The first half of the file seems to be identical to a 16K Spectrum 48K ROM from the EightyOne emulator. Just weird that the HN27128P doesn't work. These mask programmable ROMs ...