Air 486PH, User Manual, Page: 24 / 48

DRAM SIMMs Configuration
The on-board DRAM memory sub-system has four module
mounting sockets which are divided into “banks” of one socket
each. They support 256Kx36, 512Kx36, 1Mx36, 2Mx36,
4Mx36, and 8Mx36 DRAM SIMMs. DRAM speed must be
70ns or faster. You can configure the memory of the 486PH in a
variety of ways as follows.
SIMM1 SIMM2 SIMM3 SIMM4
1Mx36 1Mx36
4Mx36 None None
1Mx36 1Mx36
4Mx36 1Mx36
4Mx36 None
1Mx36 1Mx36
4Mx36 1Mx36
4Mx36 1Mx36
4Mx36
2Mx36 None None None
2Mx36 2Mx36
8Mx36 None None
2Mx36 2Mx36
8Mx36 None 1Mx36
4Mx36
2Mx36 1Mx36
4Mx36 None None
2Mx36 1Mx36
4Mx36 None 1Mx36
4Mx36
4Mx36 4Mx36 None None
4Mx36 4Mx36 4Mx36 None
4Mx36 4Mx36 4Mx36 4Mx36
8Mx36 None None None
8Mx36 8Mx36 None None
8Mx36 1Mx36
4Mx36 None None
8Mx36 1Mx36
4Mx36 None 1Mx36
4Mx36