Second Generation
Placed in IBM PC AT Model 319/339
This IBM/WD controller is basically compatible with the WD1006V-MM2 controller. I formatted (LLF + FDISK + DOS FORMAT) a Seagate ST225 with a WD1006V and was then able to use it with the IBM/WD without any problems.
In this version, the large ICs are soldered directly onto the PCB. The FDC is a Intel P8272A.

ASSY 61-000206-00
Placed in IBM PC XT-286
This IBM/WD controller is basically compatible with the WD1006V-MM2 controller. I formatted (LLF + FDISK + DOS FORMAT) a Seagate ST225 with a WD1006V and was then able to use it with the IBM/WD without any problems.
In this version, the large ICs are socketed, they can be replaced very easily. The FDC is a NEC D765AC.

ASSY 61-000141-00 REV X10