Technical data

Block Diagram
A-7
DIGITAL Server 5220
Parallel Interface Pin Assignments
Pin Number Function
1 Strobe L
2 Data Bit 0
3 Data Bit 1
4 Data Bit 2
5 Data Bit 3
6 Data Bit 4
7 Data Bit 5
8 Data Bit 6
9 Data Bit 7
10 Acknowledge L
11 Busy L
12 Paper End
13 Select
14 Auto Feed L
15 Error L
16 Initialize L
17 Select In L
18-25 Ground
Diskette Controller
The SMC 37C935APM has an integrated diskette controller capable of supporting
two diskette drives interfacing to the main logic board through a daisy-chained ribbon
cable. Data transfer rates for a 3.5 inch diskette drive include 720 KB, 1.44 MB, and
2.88 MB. Data transfer rates for a 5.25 inch diskette drive include 360 KB and 1.2
MB.