isa slot pinout

isa slot pinout   Dan isa slot

ISA interface is built using 8255 for extra control and address wires, pair of 74374's for capturing high byte of 16-bit data bus, and some glue logic for bus

I've been able to find the PCI and ISA card edge footprints Table 4 11: PCI Connector Pinout 5V System Environment slot is located such that dedicated ISA, EISA, or MC slots are

fairy garden slot png Try searching for 31 card edge connector It looks like there's some 50-31SN-12 in the states and they look correct for 8-bit ISA  ISA Connector Pinouts ; B6 DRQ2 ; B7 -12V ; B8 SRDY_L ; B9 +12V