More affordable than the old IEEE drives, and sporting a new look! They
use an IEEE-488 interface to talk to the PET and 'B' line machines. The LP
models, like the 2031LP here, usually found their way to a B128 or similar machine.
The 2031 and 4031 drives appear to be completely identical, even down to the
version of DOS included.
Like all Commodore disk drives, these drives were "smart" devices. They included their own processor, their own memory, and their own disk operating system. In fact, the relationship between a Commodore computer and it's disk drive resembles more closely two computers on a network than a typical Computer->peripheral relationship. The peripherals on the IEEE-488 "network" each had a unique identifying "Unit" number, typically ranging from 8-30. This number identified which physical device was being accessed. When a disk drive contained more than one floppy drive (like the 4040), you also had to refer to the particular "drive" number you wanted (typically 0 or 1). Single-floppy drives, like the ones on this page, still had to deal with the legacy of the dual drives by referring to their single floppy as "drive 0".
Model : 2031 Type : 5.25" Floppy Disk Media : Single Sided, Single Density Capacity : 170K per disk Interface: IEEE-488 Dos : CBM DOS 2.6 Notes :
Model : 4031 Type : 5.25" Floppy Disk Media : Single Sided, Single Density Capacity : 170K per disk Interface: IEEE-488 Dos : CBM DOS 2.6 Notes :
Model : 2031lp Type : 5.25" Floppy Disk Media : Single Sided, Single Density Capacity : 170K per disk Interface: IEEE-488 Dos : CBM DOS 2.6 Notes : LP for "Low Profile" (White Model)
Model : 2031lp Type : 5.25" Floppy Disk Media : Single Sided, Single Density Capacity : 170K per disk Interface: IEEE-488 Dos : CBM DOS 2.6 Notes : LP for "Low Profile" (Tan Model)
Click here to return to the main pictures page
If you find anything in here you have questions or comments about, feel
free to leave me email right here.
To return to my home page, click here.