xvi SPARCstation 20 Service Manual • July 1996
FIGURE 11-43 OpenBoot PROM Location 178
FIGURE 11-44 OpenBoot PROM Orientation 180
FIGURE 11-45 NVRAM/TOD Location 181
FIGURE 11-46 NVRAM/TOD Orientation 182
FIGURE 12-1 Selected FRUs 186
FIGURE 12-2 SPARCstation 20 System Exploded View 187
FIGURE 12-3 Major Components of the System Board 188
FIGURE 12-4 Standard External Cables 189
FIGURE 12-5 Optional External Cables 190
FIGURE B-1 System Board Block Diagram 197
FIGURE B-2 DSIMM Memory System 200
FIGURE B-3 VSIMM Memory System 201
FIGURE B-4 MACIO ASIC Functional Block Diagram 203
FIGURE B-5 SEC ASIC Functional Block Diagram 204
FIGURE C-1 Parallel Connector 205
FIGURE C-2 AUI Connector 207
FIGURE C-3 Keyboard and Mouse Connector 209
FIGURE C-4 Serial Ports A and B Connector 210
FIGURE C-5 Twisted-pair Ethernet Connector 211
FIGURE C-6 SCSI Connector 212
FIGURE C-7 13W3 Connector 215
FIGURE C-8 Back Panel Audio Ports and Icons 216
FIGURE C-9 Microphone Icon 217
FIGURE C-10 Audio Line-Out Icon 217
FIGURE C-11 Audio Line-In Icon 217
FIGURE C-12 Audio Line-in Icon 217
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