Owner`s manual

Page 2-14 Chapter Two
EAGLE 550 SPECIFIC FEATURES
The new EAGLE 550 system has additional features that distinguish it from all other
Eagle systems. These new features include:
Expanded Rear Panel
A new rear panel has been designed for the Eagle 550 system to provide more
versatility and flexability. Two SCSI ports allow external connection to a disk expansion
box or RAID subsystem. The rear panel supports four DB-25 parallel printer ports and
seven paddle board SIO expansion slots. The main system board provides four
on-board RJ-45 serial ports, a 9-pin UPS port, 10baseT and AUI Ethernet connectors.
CMOS Menu Setup
The CMOS setup procedure gives the user many boot options never before available.
Among the CMOS menu options are:
Selection of any hard disk I.D. number as the primary boot disk (unit #0 - 6)
Selection of any tape device as an alternate boot device (unit #1 - 6)
Operator entry to boot the system with any valid Monitor and/or
Initialization file name, located in [1,4] of the selected boot device
Selection between the AUI or TPI port for Ethernet connection
New Real Time Clock
The system has a new Real Time Clock chip which is part of the CMOS system setup.
Both the CMOS boot settings and the time and date are battery backed-up. The new
Real Time Clock is more efficient than previous systems, and provides time and date
protection with a software "lock".
Uninterruptible Power Source Connection
The Eagle 550 system has an on-board UPS port. This port is a switch contact status
port, as used with the Toshiba UPS products sold by Alpha Micro. In the normal
configuration this port will connect to the UPS and can control (turn off) the disk write
cache during a low battery, or AC power fail condition. This function flushes all pending
writes to disk, thereby saving your data automatically. When the power is restored, the
UPS flags the system and the disk write caching is automatically re-enabled.
Four High-Speed Parallel Printer Ports
There are four on-board, high-speed, parallel printer ports that use the new SEP.DVR
interface driver. The ports are Centronics compatible with a new FIFO design to off-load
character interrupts. The new FIFOs can buffer up 4000 characters, and interrupt the
CPU only after all characters have been printed. This gives the CPU more clock cycles
to do other things while printing.
Eagle Series Computer Owner’s Manual, Rev. 03