User Guide

Hardware Installation

2-18

Warning: Do not install any SIMM that contains more

than 24 chips. SIMMs contain more than 24 chips

exceed the chipset driving specification. Doing so may

result in unstable system behavior.

Tip: The SIMM chip count can be calculated by following

example:

1. For 32 bit non-parity SIMM using 1M by 4 bit DRAM

chip, 32/4=8 chips.

2. For 36 bit parity SIMM using 1M by 4 bit DRAM

chip, 36/4=9 chips.

3. For 36 bit parity SIMM using 1M by 4 bit and 1M by

1 bit DRAM, the chip count will be 8 data chips(8=

32/4) plus 4 parity chips(4=4/1), total is 12 chips.

Following table list the recommended DRAM combinations:

SIMM

Data chip

SIMM

Parity chip

Bit size

per side

Single/

Double

side

Chip

count

SIMM

size

Recommended

1M by 4 None 1Mx32 x1 8 4MB Yes

1M by 4 None 1Mx32 x2 16 8MB Yes

1M by 4 1M by 1 1Mx36 x1 12 4MB Yes

1M by 4 1M by 4 1Mx36 x1 9 4MB Yes

1M by 4 1M by 4 1Mx36 x2 18 8MB Yes

1M by 16 None 1Mx32 x1 2 4MB Yes

1M by 16 None 1Mx32 x2 4 8MB Yes

1M by 16 1M by 4 1Mx36 x1 3 4MB Yes

1M by 16 1M by 4 1Mx36 x2 6 8MB Yes

4M by 4 None 4Mx32 x1 8 16MB Yes

4M by 4 None 4Mx32 x2 16 32MB Yes

4M by 4 4M by 1 4Mx36 x1 12 16MB Yes

4M by 4 4M by 1 4Mx36 x2 24 32MB Yes