ncr/doc/Old Models/Technical Manuals/7453_... - Alsys Data

Chapter 4: Hardware Service 4-31Switch position 4 of SW1 enables the VGA when on, and disables theVGA when off.I/O Base Address (SW1)Switch positions 5 and 6 are used to set the I/O base address asfollows:I/O Base Switch Pos. 5 Switch Pos. 60100 On On (Default)0120 Off On0140 On Off0160 Off OffAdding MemoryThe following table shows the configurations of memory that theprocessor board supports.Memory SIMM ConfigurationTotal Size No. of SIMMS SIMM Size Socket(s)4 MB 1 1 MB x 36 (4 MB) SIMM18 MB 2 1 MB x 36 (4 MB) SIMM1, SIMM216 MB 2 2 MB x 36 (8 MB) SIMM1, SIMM232 MB 2 4 MB x 36 (16 MB) SIMM1, SIMM264 MB 4 4 MB x 36 (16 MB) All SIMM