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Chapter 4 - Memory Expansion Module Installation
4-19
Table 4-19 shows the Control Register 1 bit usage.
Table 4- 19. Control Register 1 Bit Usage
Board
Page Select
Res*
Socket Numbers
Bit
7
6
5
4
3
2
1
0
Name
BD1
BD0
PS1
PS0
*
SN2
SN1
SN0
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Bits 7, 6
(BD0, BD1)
Board Number. Module is selected if these bits match board number
jumpering of W11 pins 1-4.
Bits 5, 4
(PS0, PST)
Page Select. Used to select 64K byte pages from larger memory devices. PS2 and PS3
are in Control Register 2.
Bit 3
*Reserved
Bits 2-0
(SN0-SN2)
Socket number in binary where SN0 is the LSB.
Содержание XVME-976
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