This spawn of a community project has allowed a traditionally 16-bit IDE interface, to work in 8-bit systems.
The board has a second independant function of housing a BIOS Option ROM, that is repogrammable in-system with a simple DOS utility.
This typically uses XT-IDE Universal BIOS, and comes pre-programmed with this. Typical uses:
XT-IDE Deluxe new feature!
The XT-IDE Deluxe has both the internal IDE connector, as well as a rear-accessible CompactFlash card slot, which allows easy swapping of cards or transfer between vintage and modern PC.
You can use one or the other, or both!
The CF slot is set to master by default, as some CF cards don't like being slave. You can change this with a jumper on the CF daughterboard.
Max 2 drives, one as master, one as slave.
So you could have one IDE drive on an IDE cable, and the rear-accessible CF slot populated.
Or you can have just the CF slot, or up to two IDE drives on an IDE cable, with no CF card in the slot.
- Add IDE HDD or CF card to an 8-bit ISA system such as IBM PC, XT, and clones.
- Add IDE support to a system without IDE support in the BIOS (like AT and PS/2).
By default the XT-IDE BIOS comes configured for:
- 8088(and higher)-compatible BIOS.
- Use the XT-IDE Card's IDE interface at 300h, no IRQ.
- Boot first hard drive unless user presses A for floppy.
Any of the above can be changed on purchase, or in your own time with the simple DOS utility.
I recommend using the 186 BIOS if you have an 80186 or NEC V20/V30, or the 286-compatible BIOS instead if you have a 286 or higher, as the performance is better.
Switches and jumpers control:
- I/O port for the onboard 8-bit IDE interface
- I/O port for the Option ROM
- Option ROM Enable
- Option ROM Write-protect
- Compatibility mode and HiSpeed mode
- Provide 5V on IDE pin 20, which can power some DoMs and CF adapters.
- IBM XT Slot-8 Support