CHAPTER 1
ND-70373 (E)
Page 2
Revision 1.0
GENERAL
The CPR consists of the following components.
•
PZ-PW92
:
This card supplies operating power to the CPR and the circuit cards mounted in slots 00 to
04 of the LPR.
•
PZ-IO27
:
Floppy Disk Drive (FDD) and Hard Disk Drive (HDD) are mounted on this card.
•
CPU Board
:
This card mainly contains Central Processing Unit (CPU), Random Access Memory (RAM),
Boot ROM, ISA Bus Controller and FDD/HDD Controller.
•
PZ-GT17
:
This card connects the CPU with the Local I/O Bus and Misc Bus, permitting the CPU to
directly control the INT/TSW, EMA, IOC and other miscellaneous circuit cards mounted in
IMG0.
•
PZ-GT18
:
This card connects the CPU with the Local I/O Bus, HSW I/O Bus and Misc Bus, permitting
the CPU to directly control the INT/TSW, HSW and other miscellaneous circuit cards
mounted in IMG1 and IMG2.
•
PZ-GT19
:
This card connects the CPU with the Local I/O Bus, HSW I/O Bus and Misc Bus, permitting
the CPU to directly control the INT/TSW, HSW and other miscellaneous circuit cards
mounted in IMG3.
Figure 1-2 SN1433 CPRAF-A/SN1435 CPRAH-A
SW
MBR
MB
CPU OPE
HDD
FDD
ON
OFF
5A
I
O
ON
OFF
OUT PWR
IN PWR
0
1
2
3
4
5
6
WDT
GT0
GT1
GT2
GT3
ON
SYSTEM SELECT Note
PZ-PW92
Note 1 :
Factory settings are as follows.
IMGx
:
IMGxh/dxh
:
PZ-IO27
PZ-GT18 (for IMG1/IMG2)
PZ-GT19 (for IMG3)
PZ-GT17(for IMG0)
A
B
A B
ON
SYSTEM SELECT
ON
SYSTEM SELECT
Front View
Note 2 :
PZ-GT19 is for IMGdxh only.
