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AT Keyboard Woes

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First post, by JLuton

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Hello,

This is my first post and I've recently taken on the project to build anold retro machine.

so far I've got all parts and the machine booting but i cant for the life
of me get a working keyboard.

The Motherboard is an ATC-1030 [https://www.elhvb.com/mboards/a-trend/manuals … C-1030/1030.pdf]
The socket is a 5 pin din and the manual states "AT style keyboard connector"

I first got a nice USB keyboard and thought i could use a few adapters, i plugged it into
a USB to PS/2 adapter and then that into a 5 PIN adapter, this Frankenstein creation didn't
work ... so i thought maybe its something to do with the USB protocol.

next i got an older PS/2 keyboard and plugged that into my 5 PIN adapter but this also doesn't
work, its driving me crazy ! I have a built machine but for 2 weeks but cant actually use it without
a keyboard.

Here are some images of the keyboards and adapters i have used.

https://imgur.com/a/EmX8AhR

I've read about XT/AT stuff and think its something to do with this? but im pretty confused
and no closer to having a working keyboard, and all old 5 pin connector keyboards on sale are
a crazy price.

can someone guide me how i can ideally get the USB keyboard working? or at least the PS/2 one.

cheers !

Reply 1 of 9, by vetz

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Have you checked the AT DIN connector carefully? I've had motherboards where the AT connector weren't properly fastened to the board (most likely due to shipping/handling damage) and the keyboard would not register. I think every time I tested that by applying pressure on the cable/connector downwards towards the motherboard while I rebooted the system. I then either resoldered the connection or soldered on a new AT DIN connector.

Other than that the PS/2 keyboard should work with that adapter.

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Reply 2 of 9, by JLuton

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Thanks for the reply,

hmmm, ive taken the board out and cant see any visible signs of damaged, and i've tried applying pressure
but no luck so far

Reply 3 of 9, by cyclone3d

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If you want to adapt a USB keyboard to PS/2, it would have to support the PS/2 protocol. I've never tried to go USB to PS/2 to AT but I don't have a great deal of faith that it would work.

Pretty much any PS/2 keyboard should be able to work with a PS/2 to AT adapter.

Have you verified that the PS/2 keyboard is actually functional?

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Reply 4 of 9, by JLuton

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ah ok then i will persist with testing with the PS/2 one, i just checked that the keyboard is functional on another machine
so that seems ok, the lights come on and its operational, but with the 5 pin adapter on my other machine nothing happens.
I'm located in the Netherlands. I'm wondering if its a mainboard issue then, hmmmm

Reply 6 of 9, by JLuton

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Here is a selection of images,

https://imgur.com/a/HzEo1xi

i dont see any thing obviously wrong with it, i can only think to use a multi-meter to test
the physical connections but i dont own one

Reply 8 of 9, by JLuton

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on page 19 of the manual it says PS1 is for a mouse but i will check the fuse,
i need to buy a multimeter soon, meanwhile thanks for the help ! 😀

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