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Hardware Installation 5
MCMaster User’s Guide - Rev. B06 Kingston Technology Company
Please verify that any SIMMs supplied by anyone other than Kingston meet the
IBM specification before using them. The table below shows all of the SIMM
types that can be installed in MCMaster. Note the MCMaster DOES NOT
support 1MB or 2MB SIMM modules.
Size Configuration Kingston Part No.
4 MB 1024K x 32, 70ns KTM1x32L-70T
8 MB 2048K x 32, 70ns KTM2x32L-70T
16 MB 4096K x 32, 70ns KTM4x32L-70T
32 MB 8192K x 32, 70ns KTM8x32L-70T
MCMaster can also function with no onboard memory installed, using only
memory that is already installed in the system. Be aware, however, that
running MCMaster with only off-board memory extracts a performance
penalty, especially in a 16-bit PS/2 system like the model 50 or 60.
This table shows all possible combinations of SIMMs that can be installed in
MCMaster.
Total Memory on
MCMaster
U900 Socket U901 Socket
4 MBytes 4 MB none
8 MBytes 4 MB 4 MB
8 MBytes 8 MB none
12 MBytes 8 MB 4 MB
16 MBytes 8 MB 8MB
16 MBytes 16MB none
20 MBytes 16MB 4MB
24 MBytes 16MB 8MB
32 MBytes 16MB 16MB
32 MBytes 32MB none
36 MBytes 32MB 4MB
40 MBytes 32MB 8MB
48 MBytes 32MB 16MB
64 MBytes 32MB 32MB
Note:
• If only one SIMM is installed on the board, it must be installed in
location U900.
• If 16MB or 32MB SIMMs are used, verify Jumper J801 is connected to
1 and 2.