Data General Service ECLIPSE MV/7800 - Page 72

DEVICE 45
AND
POWER FAIL MONITOR
MASTER
BAUD
AND
BAUD
SELECT
ASYNC LINE
IN
'
ASYNC LINE
OUT
TIMING
LOGIC
, 
PROGRAMMABLE
INTERVAL
TIMER
REAL TIME
CLOCK
TO/FROM
DIAGNOSTIC
REMOTE
PROCESSOR
I INTERFACE I
LOGIC
AND
DRIVER
TO/FROM
CPU AND SYSTEM
MEMORY
SYSTEM BUS (SBUS 0-32>)
Ila l l ■
....111•1•11111111
■
INTERNAL
I/O BUS
INTERFACE
DCH CONTROL LOGIC
......_ 1 SYSTEM BUS IT 
INTERFACE 
DCH 
DCH
MAP 
OUTPUT
I CACHE

CACHE
DCH MAP POINTER
INTERNAL
I/O BUS
PROGRAMMED I/O
CONTROL LOGIC
CONFIGURATION AND
CONTROL REGISTERS
1
INTERNAL I/O DEVICES
ECLIPSE I/O BUS
(48-BIT)
TO/FROM
I/O DEVICE
CONTROLLER
FS- 12754
Figure 3-9. PIO/DCH Controller, Block Diagram
043-003621 
3-22 
DGC CONFIDENTIAL - INTERNAL USE ONLY