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On Aug 26, 2021, at 7:47 PM, norberto.collado koyado.com <norberto...@koyado.com> wrote:
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I'm guessing there must be modern chips/modules that produce HDMI output? That can include audio as well.
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Thanks Steven!
Based on documentation, it is almost the same as the SSI board that Terry S. put together. It just needed the Video Display Processor. It should be easy to recreate once schematic is available.
Norberto
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So this adapter will work fine with it.
Glenn, Terry S. is the expert on joystick.
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So this adapter will work fine with it.
Glenn, Terry S. is the expert on joystick.
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I can post to the site but initially here’s the update to my google photos account.
Schematics:
https://photos.app.goo.gl/S2Qmorpf48eoMX8a8
https://photos.app.goo.gl/GEYy2xZEpVh7UbvG7
board shots:
https://photos.app.goo.gl/uifwGNuShhUvuYjH8
https://photos.app.goo.gl/xPE7J5xrsfpsoJND9
https://photos.app.goo.gl/UgHW8pcVK5bymuxj6
the empty socket is for the math co-processor (I have one, it’s just not installed in this shot).
I have no additional documentation. The manual on the site appears to be complete (in fact it’s a newer version than I have…)
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The second link under schematics contains a table of all the semiconductors. The transistors are 2N2222As. The ones on my board are in a TO-18 case, e.g.:
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Might have to go to the video game hobby sites to track down some of these old chips… (arcadepartsandrepair, quest, etc.)
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Also a reminder: the default board configuration uses ports in the 270Q-276Q range, which could interfere with the Z67 in its alternate configuration. I’m just now getting back up to speed on that. It may be only the Arithmetic Processor that represents a direct conflict as that uses 274Q by default. Changing the board is possible but involves cutting traces and soldering wires (no jumpers!)
Since the 274Q configuration for the Z67 was not the Heath “standard” I guess this wasn’t an issue back then, but today many of us use 274 so that we can keep 174 for the H17 and 170 for the H37. It’s all workable but you need to plan the configuration carefully….
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Well, I seem to be able to reproduce your demo Les.
https://photos.app.goo.gl/PeJSiXF9Soaa2JFH9
do you recall if the controllers are analog (e.g. paddles) or contact (e.g. joystick up/down/left/right) based? I suppose I can scrutinize the source and figure that out…
sound works great. “gunshot” sounds whenever the sprite hits a wall.
From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of Les Bird
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WOW! Great work! If we can source same IC’s then we can reproduced the board, except the 4116 RAM which can be replaced with a single 32K IC.
Thanks for sharing,
Norby
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On Aug 29, 2021, at 6:34 PM, Terry Smedley <terry....@gmail.com> wrote:
As Steven pointed out, there are sources for the video and sound chips. There's one eBay seller (Hong Kong) that specializes in kitting chipsets for retro builds. I have submitted a request for an "HA-8-3" kit with the TMS9918, AY3-8910, AD7574, and AD7501 chips. Those are all available independently, but we'll see what this seller comes up with for a set.
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Great! I’ll try those next. I’ll also look through the archives. I see, for example, color graphics references in some HUG disks (885-1098 and 1099).
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