Appendix 1-10 Interfaces Rev.A

Confidential
Floppy Disk Drive Connector

One 3.5-inch floppy disk drive, which can read and write 1.44MB and 720KB format floppy

disks, can be installed as an optional device in the SR-600.

The connector is a MOLEX 52629-2651(MOLEX) or equivalent connector.

A1-11 FDD Connector

Table A1-9 Floppy disk drive connector pin assignments (Main board CN7)

No. I/O Signal name No. I/O Signal name
1-GND 2 -NC
3OHDSEL# 4IRDATA#
5-GND 6 O WDATA#
7OFMODE#8-NC
9 O DS0# 10 -+5V
11 -+5V 12 -+5V
13 I INDEX# 14 I WP#
15 I TRK0# 16 -NC
17 O WGATE# 18 -GND
19 -NC 20 O STEP#
21 O DIR# 22 O MTRON#
23 -NC 24 I DSKCHG#
25 -GND 26 -NC
25
26
1
2