Search found 142 matches

by tetroid
Sat Mar 05, 2022 8:41 am
Forum: General QL Chat
Topic: Paging Tetroid....
Replies: 2
Views: 1431

Re: Paging Tetroid....

Hi.

Hot news.

I am sorry, PayPal shuts down its services in Russia.
Now I can't sell via SMR and ebay.
by tetroid
Fri Feb 25, 2022 6:31 pm
Forum: General QL Chat
Topic: Paging Tetroid....
Replies: 2
Views: 1431

Re: Paging Tetroid....

Yes, I still be able to ship hardware to the West.
Russian post can ship to Europe ( except Ukraine ), USA, Canada.
by tetroid
Tue Mar 09, 2021 2:58 am
Forum: The Off-Topic Section
Topic: Happy Birthday!
Replies: 426
Views: 211976

Re: Happy Birthday!

Pr0f wrote:С днем ​​рождения (google translated)!
vanpeebles wrote:Happy Birthday to Tetroid at the Ob QL Design Bureau! :D
Thank you very much.
by tetroid
Sat Sep 19, 2020 11:12 am
Forum: Hardware
Topic: HAL equations / JED for use in a GAL chip
Replies: 7
Views: 2709

Re: HAL equations / JED for use in a GAL chip

Thank you Vitaliy, Not sure what value I put in there - it was a low value - but I will make sure it is 47Pf. I also need to replace my reset switch as the original QL one I've used is not playing well, they are such a poor design. What switch part did you use in your design for the reset switch? D...
by tetroid
Fri Sep 18, 2020 6:03 pm
Forum: Hardware
Topic: HAL equations / JED for use in a GAL chip
Replies: 7
Views: 2709

Re: HAL equations / JED for use in a GAL chip

Thanks Marcus - I am using a 'D' variant at 15ns - I have some 'A' variants at 25ns coming my way in the next few days - I will try again. Symptoms with the D are a bit odd! 1488 chip got a bit warm - but it could be a bad one - running tests without that in place Memory detected by Minerva on powe...
by tetroid
Thu Sep 03, 2020 4:36 pm
Forum: Hardware
Topic: Issue Tx boards discussions
Replies: 64
Views: 30574

Re: Issue Tx boards discussions

Pr0f wrote:What is IC39 the small surface mount component under the 68008?
This is PST529C - simple reset/power-on reset
Or Russian analog - KR1171SP47
by tetroid
Sun Aug 16, 2020 8:30 pm
Forum: Hardware
Topic: Issue Tx boards discussions
Replies: 64
Views: 30574

Re: Issue Tx boards discussions

Two rows have parallel connection, because of different connectors have 2.54 or 5.08 mm between rows. Modern connectors - 5.08mm, but old QL connector - 2.54. This was exactly my experience too. I had to put a second row of contacts in for the same reason. How come the DRAM didn't change from 64Kx1...
by tetroid
Sun Aug 16, 2020 12:56 pm
Forum: Hardware
Topic: Issue Tx boards discussions
Replies: 64
Views: 30574

Re: Issue Tx boards discussions

Tesla wrote:Tetroid, It is wonderful.
New motherboard + new keyboard, will we see the new ql soon? :D
Unfortunately, we need only mass production ( big batch ) for QL case to have the resonable price. Case - last big problem.
by tetroid
Sun Aug 16, 2020 11:37 am
Forum: Hardware
Topic: Issue Tx boards discussions
Replies: 64
Views: 30574

Re: Issue Tx boards discussions

Are there any additional signals around the ROM socket - as I've spotted 3 rows of pads, but only 2 are required for the original ROM socket? ;-) Two rows have parallel connection, because of different connectors have 2.54 or 5.08 mm between rows. Modern connectors - 5.08mm, but old QL connector - ...
by tetroid
Sat Aug 15, 2020 10:00 pm
Forum: Hardware
Topic: Issue Tx boards discussions
Replies: 64
Views: 30574

Re: Issue Tx boards discussions

Image