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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.
TABLE C-17 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.
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.
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:
■ 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 Signal Controlled
J2703 Write protect Write Enable 1 + 2 FLASH PROM PROG
ENABLE
J2704 High half
booting
Normal
Booting
2 + 3 XOR LOGIC SET