SEBHC

Replaced both regulators and the Z80 board came to live. The DUART module did not work, so I traced

I was suspecting that they had to provide some way to load from cassette (or other media) into the

Tom, I have been re-creating what I did 40+ years ago. I have the move code assembling under HDOS. I

I added the web page to captured the work that Terry Smedley is doing on his new H8 SEBHC 2022

Added backplane simple BOM. http://koyado.com/heathkit/New-H8-Website/download/h8-bp_2_0_bom.xlsx.zip

I did check the diodes and they are OK. I didn't think to check the fuse but you make an

Looks like Cole's H8 Chess demo is at about 13:10 in the "Bits and Bytes" video..! ----

Les, Nope, the Springs is about an hour drive or less to Littleton from where we live on the north

I recommend the Andromeda programmer: https://www.arlabs.com Don't let the 90s website throw you.

https://deramp.com/vsg.html Randy On Wednesday, August 10, 2022 at 8:52:19 AM UTC-5 bobr...@gmail.com

Hi Glenn, I've designed the P80 to run at 1 MHz, hopefully faster. EEPROMs are likely the

Agree! Also, once the VCO is calibrated properly, you can still read the old H8 tapes after 45 years.

FWIW, I recently implemented those M-H8 "mods and improvements" on a board I had acquired

On Fri, 5 Aug 2022, Les Bird wrote: > Gene, this is super cool. Well done! I need to get one of

Peter, Thank you for the information. Josh design uses a 39pF cap and I will follow his BOM: Digi-Key

In my copy of the H-8-5 assembly manual inserting the two jumpers is the very first instruction. I

Hi Darrell, I've seen this in many H19 / H89s (recently on my H19). The most common causes are: (

Looking for this type of IC socket but with the IC flat fins on one side (not round pins) pins for a

Glenn: Reaching into the fog here....but I recall bits and pieces of two programs that might do this:

All, Must be a bug in PREL 2.03 PREP 2.04 resolves the issue. Rick On Thu, Jul 28, 2022 at 5:53 AM

Thanks, Douglas, for the update! Norberto From: sebhc@googlegroups.com <sebhc@googlegroups.com>

Hello Joe, Sync with Richard and figure out the address range that will have such content. It needs

Great work guys! The original Z67 IDE was my first build when I got back into this hobby and was a

So for a variety of reasons there was never much gaming software produced for this board back in the

Very good video on Letwin's h8 version and doing the presentation on original hardware is a nice

Norberto: I completed the extender board ... worked fine when I used it to debug a problem with the

On 7/9/22 09:21, Steven Hirsch wrote: > On 7/9/22 02:32, norberto.collado koyado.com wrote: >

I will be building a few for development. Then I will spin the same board to use SD cards instead of

[Image.jpeg] Two 100k's should do the trick then. Thanks! Rob Waggoner

Nice. Are you planning to replicate the motor-control reed switch function? Sent from my iPad > On