Search found 856 matches

by mrtinb
Tue Jan 15, 2019 8:24 am
Forum: Sinclair Misc
Topic: PC game with ZX81 graphics
Replies: 1
Views: 319

PC game with ZX81 graphics

Found this on YouTube. https://youtu.be/KX0X-Q9Ycu4

New game: Life of Pixel

The first part of the game is in ZX81 mode.

OFF-topic but cool
by mrtinb
Sun Jan 13, 2019 10:39 am
Forum: WANTED
Topic: Wanted: Mindware MW100
Replies: 8
Views: 5214

Re: Wanted: Mindware MW100

This Danish book store still has ribbons for it. But the picture of the ribbon is quite huge compared to the size of the printer.

https://www.williamdam.dk/printertilbeh ... d=Sinclair
by mrtinb
Sun Jan 13, 2019 10:31 am
Forum: WANTED
Topic: Wanted: Mindware MW100
Replies: 8
Views: 5214

Re: Wanted: Mindware MW100

The K1 site has a picture:
Image
by mrtinb
Thu Jan 10, 2019 10:28 pm
Forum: Hardware
Topic: Help in resurrecting my ZX81
Replies: 64
Views: 6331

Re: Help in resurrecting my ZX81

My old soldering iron was not easy on any boards
by mrtinb
Wed Jan 09, 2019 11:20 pm
Forum: Hardware
Topic: Help in resurrecting my ZX81
Replies: 64
Views: 6331

Re: Help in resurrecting my ZX81

And now a monitor is connected and M1NOT modification added temporarily with the white jumper wire

Image
by mrtinb
Tue Jan 08, 2019 11:15 pm
Forum: Hardware
Topic: Help in resurrecting my ZX81
Replies: 64
Views: 6331

Yahoo Jippie Hurray Hurra Yeah!!!!

Finally I got my ZX81 from Danish distributor to work again with Andy Rea's new ULA. :D :D :D I found a second cut on the pcb from the destructive removal of the old ULA. So now there's 2 wires on the bottom of the pcb, and it works great, and a new transistor has been inserted where one was removed...
by mrtinb
Tue Jan 08, 2019 11:17 am
Forum: Hardware
Topic: Some questions about ZXPand+ serial port
Replies: 12
Views: 668

Re: Some questions about ZXPand+ serial port

The PIC18F4525 that the ZXpand uses has a EUSART. I think that's what's used.
by mrtinb
Tue Jan 08, 2019 6:28 am
Forum: Hardware
Topic: Some questions about ZXPand+ serial port
Replies: 12
Views: 668

Re: Some questions about ZXPand+ serial port

RS232 communication is not as simple as you might think. RS232 requires a steady baudrate. This is easy on the PC side where you have a chipset with hardware handshake and interrupts. Hardware handshakes are not available on the ZX81, so we have to use software handshake (XON/XOFF). And the interrup...
by mrtinb
Mon Jan 07, 2019 11:17 pm
Forum: Lambda 8300/ Power 3000 Lounge
Topic: Programs on tape
Replies: 98
Views: 4833

Re: Programs on tape

Yes indeed. Very pleasantly surprised. Seems Scan-Bit Software released both great and poor games.
by mrtinb
Mon Jan 07, 2019 11:24 am
Forum: Lambda 8300/ Power 3000 Lounge
Topic: Programs on tape
Replies: 98
Views: 4833

Re: Programs on tape

This must be the game Squeeze Play which cover was shown earlier. Now with the instructions there are more features than I just found. https://trello-attachments.s3.amazonaws.com/598af660300e0d55b35f5755/5a36e7929ce3cfa9702728e9/827ec273a9b41a2652deb018109b75ef/scanbiy18.png Translation: -----------...