This is an ISA AT Card featuring:
- 1 IDE port
- 1 floppy port
- 2 serial ports
- 1 parallel port
- 1 game port
The card was part of a 486DX66.
It has two ICs:
The PCB is marked with TK-82C863/865-2J-D02
There is a jumper block:
|JP1||COM2||COM4||Serial port 2 switch|
|JP2||Enabled||Disabled||Serial port 2|
|JP4||COM1||COM3||Serial port 1 switch|
|JP5||LPT1||LPT2||Parallel port switch|
|JP6||Enabled||Disabled||Serial port 1|
|JP8||Exist||Not Exist||Other HDC|
And two additional jumpers:
- J1: IDE IOCHRDY (OPTIONAL)
- J2: HD LED
COM1 and 3 use IRQ 4, and COM2 and 4 use IRQ 3.
If this IO Card is the only HDC in your computer, then the switch JP8 must be at NOT EXIST.
Thanks to the info I found here.
The card may be of interest because:
- it has an old floppy controller (which is important for floppy imaging)
- it has an old parallel port (for use with an X1541 cable)
The difficulty is to avoid IRQ conflicts. How to disable the on board devices in pentium-age PCs in favour of this card?