C.1.4.1 DIMM

The DIMM is a 60-nanosecond, fast-page-mode-style DIMM. Three DIMM configurations are supported in the system unit: 32-Mbyte, 64-Mbyte, and 128-Mbyte. The minimum memory capacity is 128 Mbytes (four 32-Mbyte DIMMs). The maximum memory capacity is 2 Gbytes (sixteen 128-Mbyte DIMMs).

A block of data (64 bytes) always comes from one bank of DIMMs. An error code containing the address of where a failure occurred, as well as the associated syndrome, is logged when an ECC error occurs.

There are a total of four DIMM banks in the system unit.