DTA: Memory

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Memory

Expanded
Configuring SIMMs

Expanded
The driver is called mm.sys and should be loaded as the FIRST file in the config.sys file.

device=mm.sys /F /Z /S=nnn /A=nnn

Where F = the memory manager options will be displayed.
Where Z = causes the memory manager to bypass the memory test. (Useful with large amount of memory)
Where S = Page-Frame Address (Default - D0000) and n = address, valid options are:
C400
C800
CC00
D000
Where A = Base I/O port address (Default - 208) and n = address range from 100 to 3FF

NOTE: Appendix B of the Installation and TroubleShooting Guide incorrectly states that the default is 218h.

Configuring SIMMs

Installed SIMMs
Desired Memory 64 KB 256 KB 1 MB

512 KB        --        2          --

640 KB        2         2          --

1 MB          --        4          --

1.5 MB        --        6          --

2.0 MB        --        --         2

2.5 MB        --        2          2

3.0 MB        --        4          2

4.0 MB        --        --         4

4.5 MB        --        2          4

5.0 MB        --        4          4

6.0 MB        --        --         6

8.0 MB        --        --         8

All options are not listed above. This is just a quick reference to the configurations supported in manufacturing.