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ah figured it out, turns out I had it right (eventually) and it was just that I wasn't waiting long enough on startup. I forgot it takes a few seconds to get the "K" cursor when the ram expansion is connected.

Yeah that was my assumption as well. I went through each pin about 4 times with a multimeter checking to make sure the top rows are connected to top rows and bottoms to bottoms. I might just do it for a 5th time after I get off work though.

I could desolder the pin headers if needed. As long as I don't plug in the ram expansion the zx81 runs fine. If I try to power it up with it connected either I'll get a white screen (no cursor) or a rolling horizontal black bar.

I have this project I've been working on. I picked up a zx-81 (or was it a timex sinclair 1000?) from a flea market for $7 along with a 16k ram expansion. The computer seems to work but the keypad doesn't (typical). Since I already have a working zx-81 I decided to use this as a project and...

I know a few options existed back in the day, I'm looking for something that will let me hook up and use a wimodem device to a ZX-81 (Timex Sinclair 1000) either in kit form or fully assembled.

I used to sell boot disks on ebay a few years ago but then ebay permabanned me without telling me why, presumably software piracy as the only things I was selling were these boot disks and copies of my own C64 game which I wrote. Keep in mind this wasn't the whole DOS OS just a bootable disk...

I was able to get it fixed, I went though my stuff and found a few thermal fuses I had picked up a few years ago to fix a coffee maker. the legs on those were pretty much the same diameter as the SIO port pins. So I opened up the computer, snipped off the back of the pin, pushed it out the...

Yeah, I don't either. I'm wondering if I could just replace the broken pins with a paperclip or something. I mean the port is pretty much useless right now so not like I can make it worse.

Well it seems like a printable model of the casing should be simple enough (that link you provided, Chuck, would work). I guess I'd just need to get the pins. Sent an email to Best Electronics, it'll be interesting to see if it goes through and/or if I get a response given the page hasn't been...

Does anyone know where I can source a replacement SIO port for an Atari 800? I have an 800 I've been fixing up for a little while and just now realized that two of the pins were completely bent and when I went to unbend one it just snapped off. Is there maybe some other cable/device that may...

I got it from http://www.zimmers.net/anonftp/pub/cbm/pet/comm/index.html it looks like 0.5.0 is still the latest version at that location, as well as https://github.com/ChartreuseK/PETTERM/releases

0.5.0, it was a few months back that I copied it to my SD card I must have picked up an older version.

Nothing happened, I don't see an "X" on the menu but I tried it anyway. Also tried SHIFT+X just in case.

hmm that didn't seem to work

Ah CLR/HOME that's what I needed! I thought I tried every key. Strangely, today, the 80 column version is not freezing up on startup, so I don't know why it was yesterday. Is there a way to get out of PETTERM without power-cycling?

Okay I see about the B/G, I have a business keyboard but both 80 column versions of the program freeze up on me on startup. I do have +5v going to the wimodem, the wimodem is working I could use it with the 40 column version of petterm (at 300 baud). So, still need to figure out: a) how to get...

I have a PET 8032 which I restored over the last year with a lot of help from members of this forum. I haven't had much chance to use it because until recently I didn't have a place to set it up. I have a petdisk and wimodem for it. I was trying to get the wimodem going last night to do some...

Sorry I missed an important word in my post (it's in the title but not the post itself), this is for the monitor only not the whole PET case.

Sent, thanks!

I'm looking for the "Atari" logo keycap for an Atari 800.