SEBHC

I used a pin oiler (eg https://a.co/d/cvlp4Hr) but I think any lightweight oil will do. I used a very

Like Glenn, I get most of my parts from Mouser, then Digikey. For older stuff, I occasionally use

I believe the latches are necessary to guarantee proper setup & hold times. Joe On Sun, Mar 9,

Here is the latest link to the H89 VDIP1 board. http://koyado.com/heathkit/New-H8-Website/h89-

Your exhibit is always interesting Mike! See you there… Sent from my iPad > On Mar 5, 2025, at 11:

Hi, Glenn, Thanks for the response. Your memory is good. What you describe is the typical INIT

The issue is that he is using the 16C25550. The Interrupts are not compatible with HDOS 2.0/HDOS 3.0

I am slowly pulling together Terry's materials to create a Github repository, to be located here:

Thanks Norberto! I'll keep investigating… Sent from my iPad On Jan 24, 2025, at 11:37 PM,

Thanks Glenn and Norberto! Hopefully it helps someone going forward. From: se...@googlegroups.com

Thanks for documenting all of that. I will need to study it and see if I can get some of my dead H89s

Well, things got MUCH better after I removed the keyboard and cleaned the male pins with a toothbrush

The cool thing about the circuit that Jeff chose is that it inserts inline with the keyboard, uses

Thank you, Norberto, for your expertise and for chasing down the issues. Hopefully, your experience

Scott, For H19s / H89s, one way to tell the difference is the face of the CRT. A white CRT will have

VCF Midwest 20 (wow, twenty!) will be held September 13th and 14th, 2025, once again at the

So it was quite a pleasure collaborating with Terry on this work. He was quite patient with the “idea

I apologize for the tone of my previous response. It wasn't my intention to come off that way.

Here's a Molex 15-connection right-angle female connector that I believe is what you're

Can you take detailed photos of the connections before you remove the board? It would be interesting

Randy, I just updated the descriptions for each board and put a link to the BOM at the top of the

Awesome! Great board! Sent from my iPad On Dec 18, 2024, at 8:43 PM, norberto.collado koyado.com <

On 12/18/24 13:12, Glenn Roberts wrote: > The only ones I've ever seen go are the ones on the

I think we're pretty organized on the 8-bit manuals but a bit disorganized/under-represented on

Those Z100 (full size) binders would fill a bookshelf. I lugged boxes of them around for years (until

I've been working with Joe Strosnider of "Joe's Computer Museum" to get his

Excellent! On Wed, Dec 4, 2024, 12:03 AM tim primal-bits.com <t...@primal-bits.com> wrote: Joe,

No. I didn't share the $600 cost estimate earlier. I figured no one would be interested. You

Usually a good time to stock up on regulators or other parts from Pololu… Sent from my iPad Begin

Ok so this may be a bit wordy…. When the H8-5 board came out (1977) the accompanying terminal would