98561-66519 Processor Board; General Description - HP 9000 Series 310 Service Information Manual

98561-66519 Processor Board
General Description
The 98561-66519 processor board has the following features:
• MC6840 Systeln Timer.
• 16.6 MHz MC68020 microprocessor.
• Optional l\fC68881 Floating-Point Coprocessor
• Boot ROM.
• Eight Self-Test LEDs
• 32-bit wide Virtual Cache Memory
• 32-bit wide Memory Management Unit
• Miscellaneous other components needed by HP Operating Systems (HP-UX, Pascal, BA-
SIC).
Figure 3-11 is a block diagram of the 98561-66519 processor. Refer to this diagram for functional
descriptions.
~--
- - -
-",''''''
-
-[~
- - - - - - - -
U29
COP
TA(22:2)
--
PA(23:1)
- - - - >-------
r-PO(31 :0)
CACHE TLB
-
MMU
PROCESSOR
,- PROC CONTROL
8PO(31 :0)
U42
~~ 10(15:0)
PROC_CONTROL
010 INT
~~:O)
-
1 I
WALKEN'"
~~U CONTROL
~OEN'"
TWR'"
TOE'"
~---
PROC_CONTROL
f-~
- -
~~E~~
PAl
Cl
~
--~>--
PROC
.f~
PA3
102
I"
BLA(23:21).BLA13
1015
- - - - - - - - - - -
CONTROL
L,.
010 CONTROL
- -
S
PINO~
OSKO'"
TEST
SLKUP'"
aSK1'"
I--
- -
Figure 3-11. 98561-66519 Processor Board Block Diagram
Functional Description
57