98561-66513
Processor
Board
General
Description
The
98561-66513 processor
board
has
the
following features:
• MC6840 System Timer.
•
10
MHz MC68010 Inicroprocessor.
•
Boot
ROM.
•
Eight Self-Test LEDs
• 1 M-byte
of
RAM:.
• MCA2800ALS RAM Controller.
• Memory Managernent Unit.
•
HP-IB Interface.
• RS-232 Interface.
• HP-HIL
Keyboard
Electronics with
battery
backed-up Real
Time
Clock.
•
Miscellaneous
other
components needed by
HP
Operating
Systems (HP-UX, Pascal, BA-
SIC).
Figure 3-10
is
a block
diagram
of
the
985()1-66513 processor board. Refer
to
this
diagram
for
functional descriptions.
BlA(J1:0)
I
TA(22:2)
--
--------0
PA(2J:1)
PD(J1:0)
CACHE_
TLB
MMU
CPU
PROC_
CONTROL
IIPO(J1:0)
10(15:0)
L
L
---
DIO_INT
1IPO(4:0)
TT
WALJ([NII
WMU
~ONTROL
1
W015
PROC
CONTROL
r-f--
CACHE
CONTROL
C1
~
PROC
CONTROl.
1
J~
BlA(2J:21),BlA1J
100
I
CONTROL
DlO
CONTROL
os
..
,oorr--
ROM
~.
Figure 3-10. 98561-66513 Processor Board Block Diagram
Functional Description 55
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