IBM System/370 Manual page 192

Page ofGC20-1730-0
Revised 7/14/7 0
By TNL GN20-2227
tapeless carriage, 3211 Printer 51
time of day clock
description 11
OS support 54
Time of Day Clock Damage machine check 78
transition, OS MFT and MVT 87
Two-Byte Interface feature 25, 47
UCW's 29
warm start 83
writable control storage
cycle time 8
description 8
for rnicrodiagnostics 85
loading 9
2150 Console 13
2250 Display unit 13
2305 facility Models 1 and 2
average search time using SET SECTOR 49
capacities 46
characteristics 49
command retry 42
conversion to 81
data recording on Model 1 43
data recording on Model 2 42
general description 41
multiple requesting 41
operation with block multiplexer channel 33
OS support 55
rotational position sensing 33
use of 5
2835 Storage Control, for 2305 facilities 42, 44, 47
3211 Printer
description 50
FCB 51
OS support 55
3330 facility
average search time using SET SECTOR 31
capacity and speeds 38
command retry 39
conversion 88
description 36
error logging 40
error recovery 39
features 41
multiple requesting 30
operation with block multiplexer channels 33
OS support 54
rotational position sensing 30
use of 5
3336 Disk Pack, for 3330 facility 37# 38
3811 Control, for 3211 Printer 50, 51
3830 Storage Control, for 3330 Disk Storage 39
110