Sun Microsystems 60 用户手册
Appendix C
Functional Description
C-47
C.4.2
Flash PROM Jumpers
Flash PROM jumpers J2703 and J2704 are for reprogramming specific code blocks
and remote programming of the flash PROM.
and remote programming of the flash PROM.
identifies the flash PROM
jumper settings. The default shunt setting of J2703 is on pins 1 and 2. Placing the
shunt on pins 2 and 3 enables reprogramming of the flash PROM.
shunt on pins 2 and 3 enables reprogramming of the flash PROM.
C.5
Enclosure
The system unit uses an enclosure that reflects style, ergonomics, serviceability,
functionality, versatility, and quality. Physical orientation allows for a rack-mount,
desktop, or under desk installation. The enclosure design complies with all
necessary environmental and regulatory specifications.
functionality, versatility, and quality. Physical orientation allows for a rack-mount,
desktop, or under desk installation. The enclosure design complies with all
necessary environmental and regulatory specifications.
C.5.1
Enclosure Basics
Overall dimensions of the enclosure are 17.70 inches (45.00 cm) x 7.50 inches
(19.00 cm) x 17.60 inches (49.60 cm). The enclosure houses:
(19.00 cm) x 17.60 inches (49.60 cm). The enclosure houses:
■
One 3.5-inch diskette drive
■
One 1.6-inch CD-ROM drive
■
One spare 3.5-inch device slot
Note –
The CD-ROM drive slot is used for either the CD-ROM drive or an
X-option-selected tape drive.
■
Two 1-inch single-connector 3.5-inch disk drives
■
Two plug-in UltraSPARC modules
TABLE C-17
Flash PROM Jumper Settings
Jumper
Pins 1 + 2 Select
Pins 2 +3 Select
Default
Jumper on
Pins
Jumper on
Pins
Signal Controlled
J2703
Write protect
Write Enable
1 + 2
FLASH PROM PROG
ENABLE
ENABLE
J2704
High half
booting
booting
Normal
Booting
Booting
2 + 3
XOR LOGIC SET