Overview

Model	Capacity	Size	Height	Media Type
Micropolis 1041 II	315K	5.25"	Full	Single Sided, Double Density / 100TPI

Micropolis floppy disk drive 1041 Mod II is a complete MetaFloppy™ single-disk subsystem with 315 kilobytes of formatted on-line storage. Similar to model 1043 except drive is enclosed in a protective sleeve which does not include a power supply or regulator/heat sink package, but includes a power cable A for connecting to an external regulated power supply. The 1041 Mo II can be used in a desk-top mode, or the rubber feet can be removed and the unit mounted in the customer's chassis.

Notes

Micropolis MetaFloppy™ disks use MFM and hard sectors. Model II operates with 100 TPI and stores 315k on one side stored in 16 sectors. One sector contains 256 bytes of payload "user data" and an extra of 10 bytes of metadata reserved for use by the operating system. So 266 Bytes per sector. Micropolis DOS (MDOS) used these metadata bytes, while the CP/M operating system did not (ref).

Model 1041 Mod II is a master module, used with a Micropolis 1071 controller and interface cable A. Its sister-module 1021 Mod II is an add-on module only. As said, this drive only accepts hard-sectored media when used with a Micropolis 1071 controller.

This module ships without power supply. Compare the Micropolis 1091-01 regulator.

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.