NEC NEAX 2400 ICS - Sn1433 Cpraf-A;Sn1435 Cprah-A

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
012 3 45 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)
AB AB
ON
SYSTEM SELECT
ON
SYSTEM SELECT
Front View
Note 2 : PZ-GT19 is for IMGdxh only.