H5 C5B Development Boards

[Icky]

Almost ready to try a boot. Just missing Shifter ZIF socket, for easy Phoenix Shifter testing, and the Oscillator. Oh also the 68K expansion sockets.

I have raced ahead on one board as I had all the components and am waiting on more to arrive from @exxos to continue on the other H5 boards for @ijor and @exxos.

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Before I boot I'll do a little section here on the Jumpers and probably break it out into a renewed one for the H5 C5B as I remember doing one for the H4 a while back.

EDIT: found the link to the H4 jumpers - viewtopic.php?p=28981#p28981

[Icky]

Looking at the low profile ZIF socket for the Shifter chip I think normally the lever is on the end of the chip where the notch and pin 1 is. However in the first picture the lever obscures the 16MHz jumper and no amount of tweaking, well nice hacking, is going to work.

IMG_1704 (1).png

So I am putting all ZIF sockets with lever at the bottom to allow me to get to the 16MHz line.

IMG_1705 (1).png

In situ including a WD1772 ZIF socket. I'll put a white dot on the ZIF sockets to make sure identification of orientation is shown. This was a specific requirement for Ijor.

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[Icky]

And now we have the completed board. I need to do some preflight checks before attempting a power on. This board is going to be @ijor's, the other two have lagged behind a little as I have been scoping this one out with the tweaks. The others will be the same. There may be a few more teaks on this board before it's ready to ship.

IMG_1713.png

[ijor]

This board is going to be @ijor's, ...

Looks beautiful already ... :)

Looking at the low profile ZIF socket for the Shifter chip I think normally the lever is on the end of the chip where the notch and pin 1 is. However in the first picture the lever obscures the 16MHz jumper and no amount of tweaking, well nice hacking, is going to work.

So I am putting all ZIF sockets with lever at the bottom to allow me to get to the 16MHz line.

The manufacturer actually has variants with the lever in different positions, and I believe even in different "polarity" (in which lever position the socket is closed, and in which is open). But the distributors only carry the "normal" part.

[Icky]

First turn on and no bananas. At least there was no smoke or :fire:. I don't have time tonight to investigate but will take a look tomorrow.

BTW there is a good troubleshooting guide for the H4 / H5 which will get you booting: viewtopic.php?t=2362

IMG_1716.png

[Icky]

Finally have one of these broads working. Time hasn't been kind to this project. Now working on the other two to bring them to life.