From G8MNY@4:902/6 to WW on Wed Dec 11 05:57:59 2024
To : IBM@WW
From Harry M1BYT @ GB7FCR.#16.GBR.EU
Stand peering in at an empty 8 Bit ISA card slot on a motherboard, via the gap where the metal bracket goes on the case......
+++++++++
I I Ground
I I Clock Osc.
I I +5V
Several pins
missed out
in the middle
I I Ground
I I +12V
I I Card SelectD
I I -12v
I I DRQ 2
I I -5V
I I IRQ2
I I +5V
I I Reset DRV
I I Ground
+++++++++
Metal End Bracket
You should be able to confirm you are looking at it the right way, by looking at the power supply rails on any ISA card. These will likely be thicker than the data & other tracks leading to the card edge connector.