Sun Microsystems Sun Blade 1000 Service Manual page 267

Diskette Drive Connector, J1801, Signals and Functions (Continued)
TABLE B-19
Pin Signal Name
32 HEAD_SELECT
34 DISK_CHANGE
5, GND
7,
9,
11,
13,
15,
17,
19,
21,
23,
25,
27,
29,
31,
33
Function
When low, HEAD_SELECT selects head 1. When
high, HEAD_SELECT selects head 0.
When low, DISK_CHANGE indicates that the drive
tape medium has been changed. DISK_CHANGE is
reset when a new disk is inserted and an enable
signal is sent by the host.
Ground
Appendix B Signal Descriptions B-23