DRIVE SERIES SPECIFICATIONS
1240-Series of rigid disk systems
| Model Number |
1241-1 |
1242-1 |
1243-1 |
| Capacity (unformatted) |
8.9MB |
26.7MB |
44.5MB |
| Capacity (unformatted) |
6.2MB |
18.7MB |
31.1MB |
| Platters |
1 |
2 |
3 |
| Heads / Data Surfaces |
1 |
3 |
5 |
Overview
The Micropolis Model 1240 series of fixed disk systems are intended for mini or
microcomputer applications and come in three capacities. All models share the 8-inch form factor,
integrated controller board, Shugart 8" footprint compatibility and D.C. supply voltages.
The 1240 series are
MFM drives with an ST-412 interface.
Micropolis offered these systems as part of a subsystem enclosure under the "Microdisk"
trade name and shipped the "OSM" software package with it. The Microdisk subsystem was
available in three sizes. Higher model numers denominate combinations with enclosure and
controller:
1251, 1252, 1253 (drive w/ enclosure and AC supply)
1261, 1262, 1263 (drive w/ enclosure, AC supply, and EPM Controller)
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