So, I have this motherboard diagnostics card and I'm slightly confused as to how to insert into an ISA slot. It has a "rear" designation on it but does that mean the rear of the board, ie. the "rear" designation facing outwards or the rear of the ISA slot which means it would mean "rear" would point inwards (ie. be close to the 16bit part of the ISA extension).
What to do?
Rear of the board.
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My guess would be rear if the case.
But, it looks like a 2 layer PCB. To be sure, trace which ISA contacts connect to the ground fill. Then you can match it up with the ISA pinout.
Also, improve the marking on the card 🙃
In a tower build, the components of an ISA card should always face upwards when you install it. As a side effect, you will be able to read the display when you have your motherboard installed in a tower. That corresponds with 'rear' meaning the rear of the case, but is like a small extra reminder.
PCI by the way is the other way around (faces down in a tower build).
digistorm wrote on 2020-10-23, 07:33:PCI by the way is the other way around (faces down in a tower build).
BTX says 'Hi!'
Is this too much voodoo?
Whoops! 😬 Yes, my previous comment is only correct with a regular AT/ATX case.
Well, have there been any btx boards with ISA made ?
The PCI part can't be reverted so it doesn't matter ^^
Trying to identify old hardware ? Visit The retro web - Project's thread The Retro Web project - a stason.org/TH99 alternative
Rear goes towards the rear of the case. Same exact diag card I have.
If you bought it new, it should have come with a little user manual.
Deksor wrote on 2020-10-23, 12:47:Well, have there been any btx boards with ISA made ?
The PCI part can't be reverted so it doesn't matter ^^
[PCI 5v and PCI 3.3v Walking into the room]
(Sorry couldn't resist)
These are mirrored on the board, notch front or back.
The idea of orientation of components is pretty viable. I'd say there are holes drilled into the PCB, which might align with the slot covers.
Also, if you insert the card with the unused bus connector faced towards the slot covers, they might nearly touch. Not very practical, just annoying.
Finding the gnd pins could gives you the answer. I'd search for them. Just in case. It would indeed be a pity if this card, your motherboard or power supply suddenly lost their magic smoke somehow... Oops.
Stuck at 10MHz...
“Rear” means this end goes towards the back of the computer
