Download Cromemco 68010 Cromix-Plus System Administrators Guide 023

Chapter 3 Cromix Peripherals; Software Changes
The bits marked by "u" denote the unit number . The values supported are:
2, 5, 6, 7, 8, 9, 10, and 11
The sysdef file must list all minor device numbers to be used.
3.3.11 U}lop
The uflop driver supports uniform style floppies. Uniform style floppies are UNIX compatible. All
tracks on the disk are recorded in the same manner (no boot track). There is no disk label to tell how
the disk is recorded. All this information must come from the minor device number. The minor device
numbers for the uflop driver are structured in binary as follows:
bit# 176543210
marker
I0xydzsuu
The bit marked by "x" denotes the density:
0 = double density
I = single density
The bit marked by "y" denotes the number of sides:
0 = double sided
I = single sided
The bit marked by "d" denotes PERSCI type drives:
0 = single drives
I = drives move heads in pairs (PERSCI)
The bit marked by "z" selects track density:
0 = single tracked
I = double tracked (not supported)
The bit marked by "s" denotes the size:
0=8"
1 = 5-1/4"
The bits marked by "u" denote the unit number:
00 = drive A
01 = drive B
10 = drive C
11 = drive D
68010 Cromix-Plus System Administrator's Guide 3 -9