Search found 25 matches

by paul ron
Wed May 15, 2019 4:44 am
Forum: Sinclair Misc
Topic: Live coding on a ZX81
Replies: 1
Views: 1685

Re: Live coding on a ZX81

that was fun! good job.


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by paul ron
Thu May 02, 2019 1:34 am
Forum: Hardware
Topic: What is the going price to have EPROMs burnt?
Replies: 35
Views: 3794

Re: What is the going price to have EPROMs burnt?

thank you for the program... its exactly what my eprom burner needed. works great!
by paul ron
Mon Apr 29, 2019 7:15 pm
Forum: Hardware
Topic: What is the going price to have EPROMs burnt?
Replies: 35
Views: 3794

Re: What is the going price to have EPROMs burnt?

Thanks Id really appreciate it. I sent you a private message... maybe you can send the pgms via email?
by paul ron
Mon Mar 18, 2019 2:40 pm
Forum: Hardware
Topic: ZX81 pulse cleaner article
Replies: 5
Views: 372

Re: ZX81 pulse cleaner article

Very interesting magazine. I always enjoy the circuits. The direct modem hookup project was an interesting read. What we did back before modems to transfer programs was hook the OUT jack to an audio transformer which was wired into the telephone speaker mic. On the other end, the recipient would hav...
by paul ron
Mon Mar 18, 2019 2:26 pm
Forum: Hardware
Topic: Cleaning ZX81 16k RAM pack and edge connector
Replies: 2
Views: 247

Re: Cleaning ZX81 16k RAM pack and edge connector

To clean female edge connectors that are heavily oxidized, I fold a piece of wet dry 400 abrasive paper to form a male and push it in n out a few times.

Cleaning the males, use a pencil eraser n go over the fingers till they are nice n shinny again.
by paul ron
Mon Mar 18, 2019 2:17 pm
Forum: SALES
Topic: Memory ICs still waiting for a new home
Replies: 0
Views: 390

Memory ICs still waiting for a new home

While cleaning out my electronics bench I came across a ton of memory chips. I don't have a need for them but I would like to offer them real cheap to anyone that has a use for them. I got them at a Trenton NJ computer show in the 1980s. Corrected count...... 4264-15 and 4164-15..... 97 41256-15.......
by paul ron
Mon Feb 05, 2018 6:59 pm
Forum: Hardware
Topic: Source for 40pin DIP Heatsink?
Replies: 9
Views: 1376

Re: Source for 40pin DIP Heatsink?

don't forget to buy some of that heat transfer cream.
by paul ron
Fri Jan 12, 2018 6:55 pm
Forum: Development
Topic: old magazine article -- interesting ! ??
Replies: 16
Views: 2359

Re: old magazine article -- interesting ! ??

very nice. thanks for posting it.
by paul ron
Thu Dec 07, 2017 2:21 pm
Forum: Hardware
Topic: Another Video Convertor
Replies: 5
Views: 1339

Re: Another Video Convertor

where can you get these?
by paul ron
Thu Nov 02, 2017 2:03 pm
Forum: Sinclair Misc
Topic: Water Cooled ZX81
Replies: 9
Views: 1938

Re: Water Cooled ZX81

HAHAHHAHhahahahahahaha now Ive seen it all!

:lol: