System Overview
1-25
System Clocks
System clock . . . . . . . . . . . . . . 66 MHz (matches external processor bus
speed)
Diskette/communications
ports . . . . . . . . . . . . . . . . . . . . 24 MHz from the system clock
Memory
Architecture . . . . . . . . . . . . . . 72-bit, interleaved
SIMM sockets . . . . . . . . . . . . . sixteen
SIMM capacities . . . . . . . . . . . 36-bit, 60- or 70-ns fast-page mode
16 or 64 MB single-sided, 32 MB or 128 MB
double-sided
Standard RAM . . . . . . . . . . . . 64 MB
Maximum RAM . . . . . . . . . . . 2 GB
External cache. . . . . . . . . . . . . none
BIOS address . . . . . . . . . . . . . E800:0000h–F000:FFFFh
Drives
Diskette drives . . . . . . . . . . . . one 3.5-inch, 1.44-MB diskette drive included
with standard system
SCSI hard-disk drives . . . . . . formatted capacities of 2, 4, or 9 GB (when
available)
SCSI devices . . . . . . . . . . . . . built-in Ultra/Wide SCSI-II host adapter with
system support for up to 6 SCSI hard-disk drives
in internal bays; built-in Ultra/Wide SCSI-II
host adapter with system support for up to 4
SCSI devices in externally accessible bays or
for external SCSI devices
CD-ROM drive . . . . . . . . . . . one SCSI CD-ROM drive included
System Board Connectors
Externally accessible:
KEYBD (PS/2 style) . . . . . one 6-pin mini-DIN
MONITOR . . . . . . . . . . . . one 15-hole connector (on system board or
add-in video card)
MOUSE
(PS/2 compatible) . . . . . . . . one 6-pin mini-DIN
Table 1-7. Technical Specifications (continued)
