2 Dec
2018
2 Dec
'18
4:32 p.m.
When they went
to 400K 40 cylinder MFM DSDD / double sided, double
density, still 48 tpi (like the PC-DOS 360K), they chose to call that
"QD" / "QUAD DENSITY"!! ?!?? (equating "density" with
capacity) WHOA!
Everybody else called THAT DSDD "Double Sided Double Density", and used
"QD" / "Quad Density" to refer to 80 cylinder Double density 96tpi!
So I?ve been reading :) I?m sure they weren?t doing it
deliberately, hahaha.