Xycom XVME-956 Series Manual page 89

Chapter 5 - Memory Expansion Module (XVME-956/101)
Table 5-19 shows the Control Register 1 bit usage.
Bit
Name
Read/
Write
Bits 7, 6 Board Number. Module is selected if these bits match board number
(BDO, BD1) jumpering of W11 pins 1-4.
Bits 5, 4 Page Select. Used to select 64K byte pages from larger memory devices.
(PSO, PST) PS2 and PS3 are in Control Register 2.
Bit 3 *Reserved
Bits 2-0
Socket number in binary where SNO is the LSB.
(SNO-SN2)
5-20
Table 5-19. C o n t r o l Register 1 Bit Usage
Board
Page Select
7 6 5
BD1 BDO PS1
R/W R/W R/W
Description:
Res* Socket Numbers
4 3 2
PSO * SN2
R/W R/W R/W
1
0
SN 1
SNO
R/W R/W
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