™ single-disk subsystem similar
to 1043 Mod. II
a total of 143 kilobytes of formatted on-line storage.
The roman numeral "I" indicates it operates at 35 tracks / 48 TPI.
Model 1042 Mod I
is a master module, used with a Micropolis 1071
controller and interface cable A. Its sister-module 1022 Mod I
add-on module only. This drive only accepts hard-sectored media when used with a
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.