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MEMORY:
Q26.
What type of RAM chips are used in the Equity 386SX?
A.
The Equity 386SX utilizes eight (8) 514256 - 70 (256x4), 70 nSec RAM
chips plus parity on the system board.
Q27.
How do I increase the memory of the Equity 386SX?
A.
The standard Equity 386SX system includes 1Mb of on - board
memory. You can add SlMMs (single in - line memory modules) for
increased on - board memory by installing them onto the PNT- RM
board already in the Equity 386SX. With added SIMMs the total
amount of on - board memory in the computer must be one of the
following: 2Mb, 4Mb, 6Mb, 8Mb, 10Mb 12Mb or 14Mb.
There are 16 SIMM sockets inside the Equity 386SX. The 4
centermost sockets MUST contain 256Kb SIMM's. All other sockets
can contain one 256Kb or 1Mb SIMM. The following table shows
possible SIMM configurations for the Equity 386SX.
HIGH BYTE
S I M M L o c a t i o n :
1A
2A
3A
4A
9H
8H
7H
6H
X
X
X
X
X
X
X
X
X
X
Legend:
** Total includes the standard 1 MB of System Memory
Memory can also be expanded through the use of third party memory
boards using an I/O slot.
5A
6A
7A
8A
5H
4H
3H
2H
*
*
*
*
X
*
X
*
X
*
*
X
X
*
*
X
X
*
*
X
X
*
*
X
X
= 256Kb x 1 x 9 SIMM's
= 1Mb x 1 x 9 SIMM's
L = LOW Byte.
H = HIGH Byte.
PSB No: S - 0106
Page 7 of 8
LOW BYTE
1 4 A
1 2 A
1 3 A
1 5 A
5L
2L
3L
4L
*
*
*
*
X
*
*
X
X
*
*
X
X
*
*
X
X
*
*
X
X
*
*
X
X
1 9 A
1 6 A
1 7 A
1 8 A
6L
7L
8L
9L
X
X
X
X
X
X
X
X
X
X
T o t a l * *
2 M B
4 M B
6 M B
8 M B
1 0 M B
1 2 M B
1 4 M B