Sun Microsystems SPARCstation 20 - Sbus Card; FIGURE B-1 System Board Block Diagram; FIGURE C-6 SCSI Connector

Appendix B Functional Description 197
FIGURE B-1 System Board Block Diagram
SBus Card
Each system board supports one to four SBus cards. A wide variety of I/O options
can be used with SBus cards, such as graphic displays, Ethernet, printers, and serial/
parallel controllers.
Floppy
82077
85C30
85C30
TOD
EEPROM
MBus
SEC
SBus
SCSI connector
Audio on
board
DBRI
Aux video
MACIO
SMC
COT 416
Memory bus
DSIMM 0
Video 0
Video 1
MBus 1
MBus 0
SBus 1
SBus 0
SBus 3
SBus 2
MSBI
SCSI connector