Overview

Model	Capacity	Size	Height	Media Type
Micropolis 1042 I	143K	5.25"	Full	Single Sided, Single Density / 48TPI

Complete MacroFloppy™ single-disk subsystem similar to 1043 Mod. II except with a total of 143 kilobytes of formatted on-line storage.

The roman numeral "I" indicates it operates at 35 tracks / 48 TPI.

Notes

Model 1042 Mod I is a master module, used with a Micropolis 1071 controller and interface cable A. Its sister-module 1022 Mod I is an add-on module only. This drive only accepts hard-sectored media when used with a Micropolis 1071 controller.

There's also a dual-drive version of this single-drive unit, model 1053-I.

Note on Micropolis' floppy drive naming convention

If you ask yourself what the meaning of the Roman numeral literals in disk drive names is, here's the explanation: Labeling convention for the Micropolis floppy disk drives from the 1040/1050 series is that each model number is followed by either the notation "Mod I" or "Mod II". These notations indicate whether the system operates at a track density of 48 TPI (35 tracks total) or 100 TPI (77 tracks total). "Mod I" storage modules have a black disk load actuator and "Mod II" modules have a blue disk load actuator.