HP 3000 Series - E-mail Server

Principles of Operation
HP 3000
INTERFACE
INP
DATA
BUS
cMosmL
BUFFER
RESET
INP
MICRO-
PROCESSOR
0:
L __
ROM
©
INTERRUPT REGISTER
: ® ,;
I
L L_______ _ ____ JI
PWR BUS.. POWER FAIL r -- --- - ---- - -- - - --- -- - - - .J I
TIMER
LED
INDICATORS
STATUS
OMA
CONTROLLER
I
I
----------------------~
__ _..MEMORY PROTECT
PARITY
- - - - - - - _J
- - - - - - - - -- - - - - - - - - - _J
Figure 4-L
BAUD
RATE
®
MODEM CONTROL - CHANGE
®
RS
232C
V.35
COMMUNICATION LINE
HP 30010A INP Block Diagram
4-2
®
DIRECT-
CON-
NECT