4. ISA device complies with Plug and Play ISA standards
| Required |
5. Option ROMs used only on cards with boot devices
| Required |
6. Implement full 16-bit I/O address decode logic
| Required |
7. ISA device and driver support IRQ sharing if resource requirements cannot be met
| Required |
8. Unimplemented registers return a deterministic value when read
| Required |
9. Correct IDs for each ISA card
| Required |
10. ISA system board devices report through BIOS or use unique Serial ID
| Required |
11. IDs using PNP suffix allowed only in Compatible Device ID field
| Required |
12. Correct support for boot devices
| Required |