Dan Roganti wrote about POST cards:
The ISA bus version is still available
Here's one;
http://www.winfordeng.com/products/pst44.php
Some of the recent ones support both PCI and ISA bus:
http://www.darkwire.com.au/html/standard_isa___pci_post_card.html
http://www.elstonsystems.com/prod/pc_post_diagnostic_card.html
http://www.pc-diagnostics.com/pc_diagnostics_tools/flippost_isa_pci_bus.sht…
Some of those don't appear to have switch settings to allow configuration
for port address 0x60 as used on the PC/XT and XT-compatible systems.