Appendix B
Signal Descriptions
137
FIGURE B-14
Floppy Connector
SCSI Connector (Internal)
This connector is located on the I/O board and is designated as J0303.
TABLE B-14
Floppy Pin Assignments
Pin
Name
I/O
Description
Pin
Name
I/O
Description
1
VCC
O
Voltage (+)
14
fd_step
O
Step
2
fd_index
I
Index Signal
15
GND
O
Ground
3
VCC
O
Voltage (+)
16
fd_wr data
O
Write Data
4
fd_drv sel
O
Drive Select
17
GND
O
Ground
5
VCC
O
Voltage (+)
18
fd_wr en
I
Write Enable
6
fd_dsk chng
I
Disk Change
19
GND
O
Ground
7
20
fd_track 0
I
Track 0 Signal
8
fd_eject
O
Eject
21
GND
O
Ground
9
fd_den sense
I
Density Sense
22
fd_wr prot
I
Write Protect
10
fd_motor en
O
Motor Enable
23
GND
O
Ground
11
fd_density sel
I
Density Select
24
fd_rd data
I
Read Data
12
fd_dir
I
Direction
25
GND
O
Ground
13
GND
O
Ground
26
fd_hd sel
O
Head Select
1
26
Summary of Contents for SPARCstation Voyager
Page 9: ...Contents ix test memory 146 power off 147 Glossary 149...
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