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-- Tom Wilson <>< Prineville Oregon
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On Mar 29, 2022, at 1:06 PM, Richard Davis Jr. <rickdav...@gmail.com> wrote:
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Great information Terry! You just convinced me to buy from Amazon the OSSC scan converter.
Also, can you provide some pictures/instructions on how to build out the A/V cable hardness to interface properly to the OSSC scan?
Thanks,
Norberto
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On Mar 29, 2022, at 22:21, Terry Smedley <terry....@gmail.com> wrote:
In the interest of full disclosure.....here is what is necessary to display the component video from the HA-8-3 card.
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I updated the website with latest files from Terry S. Link: http://koyado.com/heathkit/New-H8-Website/ha-8-3.html Thank you, Terry!
Also, during testing, Terry S. found that “ANY” device that adds wait states on the H8 bus will cause a “double” write pulse on some of my boards.
The following boards will add wait states to the H8 triggering this issue:
Boards affected:
The following document provides information on how to update such boards. Link: http://koyado.com/heathkit/New-H8-Website/download/reworks_for_h17_h67_h37_z80-v3_z80_v4_boards%20(3).pdf
On the positive side, once the reworks are in place, you can run your system smoothly at 16MHz if needed. The process will be to boot the H8 at 2MHZ, and once you are in the OS, switch the speed to 16MHz. The Z67-IDE+ will run fine at such speed. Also, the stock H8-4 Serial board will run fine at 16MHz with the stock 8280 UARTS.
This happened because I copied the write latch from the H89 Serial port for writes (my bad), instead of using the write latch from the H8-4 schematics. The rework follows the H8-4 circuit. Any new board carries the H8-4 write latch or similar circuit to avoid such issue.
Thanks,
Norberto
On Mar 31, 2022, at 7:33 AM, Norberto Collado <norberto...@koyado.com> wrote:
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I will update the Gerber files in the background with a note, so that when Todd’s supply is depleted, he can order new boards with the changes. I will update only the Z80 V4.x and H17/H37/H67 combo boards.
Thanks,
Norberto
From: "se...@googlegroups.com" <se...@googlegroups.com> on behalf of Terry Smedley <te...@tsmedley.net>
Reply-To: "se...@googlegroups.com" <se...@googlegroups.com>
Date: Thursday, March 31, 2022 at 12:08 AM
To: "se...@googlegroups.com" <se...@googlegroups.com>
Subject: Re: [sebhc] HA-8-3 "2000" Board
Glenn:
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I received an HA-8-3 “2000” board along with the hard to find devices from Terry S. Also, I want to thank Terry for his guidance and support as I went thru the assembly of such board. I just completed the assembly of the board per schematics and it worked great. I took the time to solder and inspect every component and ensure a successful power-on tests. The HA83DIAG application is a great tool to test the board functionality. I’m happy on how this board turn out, super great! It is beautiful! The only pending circuit to test out will be with the OSSC controller and joystick.
As Terry S. is planning to design a remote joystick, in the meantime I will like to get a vintage joystick from eBay. Any recommendations? I want to play eventually Les’s “Warlords” game.
HA-8-3-1 picture attached!
Thank you, Terry!
Norberto
From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of Terry Smedley
On Apr 8, 2022, at 6:41 AM, norberto...@koyado.com wrote:
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Thanks Glenn for the information. I found the discussion and to play with it, I will follow Terry suggestion on possible joystick.
I also used the thumbsticks from Adafruit with good results (but my human thumb control is not well developed): https://www.adafruit.com/product/512
It s a low cost joystick just to play with it. I will have my son print a case for it along with the fire switch. Also I will add an LED as well. I just need something simple to play with the analog circuit and to play Les’s game.
Thanks,
Norberto
From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of Glenn Roberts
Sent: Thursday, April 7, 2022 10:21 PM
To: se...@googlegroups.com
Subject: Re: [sebhc] HA-8-3 "2000" Board
Great! We had some discussion here about joysticks last fall while I was preparing an HA-8-3 demo for VCF (I ended up not doing any joystick in the demo). I think Les had something that was working OK.
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On Apr 8, 2022, at 6:06 PM, Terry Smedley <terry....@gmail.com> wrote:
It's my understanding that Commodore joysticks were arcade-style switches rather than analog devices. I think some other similar vintage game consoles (Coleco?) also used switch joysticks? I have no firsthand knowledge of these devices - it's just what I glean from researching them on the web. The switching devices are electrically compatible with the HA-8-3, but most of the software for that card that I have seen expects an analog input.
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If you haven’t been following this thread, the HA-8-3 was a board marketed by New Orleans General Data Services (NOGDS) as a sound and graphics enhancement for the H8. It was also sold through the Heathkit catalogs and stores.
https://heathkit.garlanger.com/companies/NOGDS/
Terry and Norberto have produced a modern clone of the board that adds some nice enhancements to the original design (see URL in Terry’s email below).
In April I built one of the pre-production boards and have been experimenting with it. The original design put out composite video but, as Terry mentions, you can install the TI TMS9928 video processor which puts out YPbPr component video. The advantage to that is if you send that output through an Open Source Scan converter you can get quite decent HDMI video.
The TMS9918 video display generator and AY-3-8910 programmable sound generator used by this board were also used in many game consoles at the time.
Unfortunately, due to the price of the original board (originally $495!) and timing of its introduction (1981?) not a lot of software was ever developed for it. that’s unfortunate because it really has some interesting potential. I have ported the Lucidata Pascal HA-8-3 library to C/80 and begun experimenting with some simple games. Hopefully in the coming months we’ll have a few more interesting things to do with this board. here’s a screen shot of some of my initial testing:
https://photos.app.goo.gl/NHA2to7jiyJk1uNQA
here’s the output from the maze program provided with the original NOGDS software:
https://photos.app.goo.gl/1Gz5cBpEk9BGGFPY8
So if you decide to invest the time and money to build a board I’m happy to help in any way I can!
From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of Terry Smedley
Sent: Tuesday, June 14, 2022 11:47 AM
To: SEBHC <se...@googlegroups.com>
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You email is on the list to respond to Joe.
It's a very busy time for me with work and personal things right
now.
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Hi all,
All the HA-8-3 boards from Terry are spoken for.
I'm happy to order and stock these, but I wasn't aware they were "released" yet.
If Terry or Norberto give the go ahead I'll order some
Thanks,
Todd
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