Data General Service ECLIPSE MV/7800 - Page 15

MODEL 8883
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MODELS 8884/8885
4.
FS-12701
Figure 1-1. ECLIPSE MV/7800 and MV17800-C
1.3 HARDWARE DESCRIPTION
The ECLIPSE MV/7800, and MV/7800-C systems contain the following PCBs:
1.
15 X 15-inch CPU PCB containing: full 32-bit (MV/) architecture, CPU plus BMC, RTC, PIT, TTI,
TTO, uSEQ, I/O and FPU (chips), time of day clock, and 2 or 4 megabytes of main memory with
ERCC.
2.
Power supply
3.
I/O controllers
4.
Optional expansion memory models:
MV/7800 MV/7800-C
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Memory Size
8900 
2 megabytes
8901 
4 megabytes
8902 
10 megabytes
1.3.1 Central Processing Unit (CPU)
The CPU consists of the following major components:
•
32-bit (MV/) architecture, CPU, uSEQ, I/O (chips)
•
2 or 4 megabytes of main memory with ERCC
•
Floating Point Unit (chip)
•
Burst Multiplexor Channel (chip)
•
Time of Day Clock
DGC CONFIDENTIAL - INTERNAL USE ONLY
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1-5
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043-003621