Ethernet Connector - IBM 4840-563 System Reference Manual

25 HDSEL
26 DSKCHG

Ethernet connector

Pin Signal
1 TxD+
2 TxD-
3 RxD+
4 Ground
5 Ground
6 RxD-
7 Ground
8 Ground
External video connector
Pin Connector
1 Red
2 Green
3 Blue
4 Monitor ID2 - not
used
5 Ground
6 Red ground
7 Green ground
8 Blue ground
9 no connector
10 Gound
11 No connector
12 MON ID1
13 Horizontal sync
SurePOS 500 Model XX3 Technical Reference, v 1.3
diskette is write protected (causes write
commands to be ignored)
O Head Select. Selects the side for R/W
operations (0 = side 1, 1 = side 0)
I Disk Change. Sense that the drive door is
open or the diskette has been changed
I/O
O
O
I
I
81
Page 54 of