Commodore 8060

The Commodore 8060, 8061, and 8062 are a series of 8" floppy disk drives developed by Commodore Business Machines. These disk drives use the parallel interface IEEE-488 to connect with Commodore's PET and CBM-II line of microcomputers. The 8060 is a single-disk model, while the 8061 and 8062 are both double-drive models similar to the later Commodore 8280 8" drive. The drives in the 806x series are full-height Shugart SA-800s.

Commodore 8060

Manufacturer	Commodore Business Machines, Inc.
Type	Floppy drive
Media	8" double-sided, double-density floppy disk (8060) 2 × 8" double-sided, double-density floppy disk (8061/8062)
Operating system	CBM DOS 2.7
CPU	2 × MOS 6502 @ 1 MHz
Storage	750 kB per disk (8060) 800 kB per disk (8061) 1.6 mB per disk (8062)
Connectivity	Parallel IEEE-488
Backward compatibility	PET, 4000-series, 8000-series, B128; Commodore 64, Commodore 128, VIC-20 with IEEE-488 adapter
Successor	Commodore 8280, 8050

All of the models in the 8060 series use Commodore group coded recording (GCR) for disk reading and writing; the later 8061 and 8062 models can also read and write IBM 3740 format disks. Each drive in the series contains two MOS 6502 microprocessors for operating the disk controllers and executing the built-in disk operating system. The built-in operating system is CBM DOS 2.7. The ROM on the 8061 and 8062 does not contain support for formatting disks; instead a provided utility disk had the formatter program, which allows the user to select between native 806x and IBM 3740 formats. The utility disk also contained a program for doing whole disk copies of IBM disks as well as the VALIDATE command, which is included in the ROM of all other Commodore drives.

References

An 8" floppy disk, in comparison, the largest–sized common removable storage medium in the last half-century