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Pardon my ignorance: Viewing the attached picture I can see two sockets. The bottom one explains why a castellated board would be preferred. ...

There is an interesting question about relations between Z800/Z280 and Japanese RISC-Z80 R800. R800 has some unused pins which correspond those of...

Thanks for this info. My inquiry to EME resulted in a response with the original ROMBO gerbers attached. I might upload them somewhere... -CH-

tbd -ch-

After my last post I connected regular 1.5V AAA battery to the battery terminals. One website was selling battery for this machine saying it was 2.4V...

I spent many hours playing Air Traffic Controller (ATC) back in the day. My manual is on Tezza's site.

This is... actually kind of impressive. Here's the search results for the error that Android File Transfer for Linux gives me: That's right,...

Yes, this exactly. I have computer magazines dating right back to 1975, and the term "personal computer" is peppered throughout them. For instance,...

Thanks Dwight. Am I correct in my assumption that I can just convert the Exxx addresses to 0xxx for the purposes of using my Microworks card, and...

I was going to say so long as I get credit for everything I've done in the section. I'm a living legend. And my work will continue even after I start...

Sure, It's a work in progress...... and that last chunk is the last page. Here are pages 10, 11, and 12. I'll try to finish tomorrow, if I can. ...

In general, the only reason for adding a new section on a forum is when there's plenty of topics on a subject which doesn't have its own section yet....

Looking at the listing, it does STX and LDX to these addresses. That means they are RAM locations, not ROM. Dwight

I found root cause! PSU switch was set to 230V instead of 115V. I was never aware about that switch. It's weird it mostly works even on 230V...

Happy holidays to you also. Wish I had some excess cash. Hope the stuff I want is still available when I got it!

Is it possible that F000 on is not ROM but RAM space used by the ROM? Dwight

Thanks Larry. Checked up to E0A0 - looked perfect. However there is a chunk missing from E0A0 to E3C2 in what you posted there.

On a side note, I finally got sick of trying to put Dos 6.22 onto floppy from img files I downloaded. I finally decided to order the disks from ebay,...

Merry Christmas and Happy Hanukkah, folks! And holiday greetings to the rest of us celebrating Festivus! It's time to treat yourself or your...

It's a 3100 Model 10, catalog# 25-1632, IXW-Jazz16s sound card, MediaVision Cd-rom, onboard VGA(somebody installed a Trident 8900c 1mb card), 25mhz...

I've OCR'd the document, created TIFF's of pages 07..017, and I have pages 7,8,9, and 17 in ASCII format with some corrections from the OCR process....

Good to know. thank you for responding.

The part I can't figure out is on the last page. As I mentioned in another thread... my 2708 programmer has you enter addresses in my SWTPC 6800's...

Yep, it really pisses me off how many of the big manufacturers are in a full-on headrush to make their Android devices into iPhones, when the...

And they do!