Data General AViiON 5500 Series, Installing, Expanding, And Maintaining

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System board and system bus options
A-3
014–002250–01
Expansion CPU complex board (optional)
D
One 40–megahertz Motorola 88110 32–bit RISC microprocessor
with integral floating–point unit
D
One Motorola 88410 CMMU
D
Stacked on system board with one 200–pin impedance–controlled
connector
Expansion input/output board (optional)
Maximum of two (AViiON 5500 series) or one (AViiON 550 series) of
the following option boards stacked on system board with two
96–pin DIN connectors
D
NCR SCSI adapter board with two integrated controllers
D
AMD 802.3 Ethernet LAN controller
Graphics controller board (AViiON 550 series)
One 8– or 24–bit/pixel color graphics subsystem board provides high
resolution display. The following summarizes some features of both
controllers:
D
32–bit wide address/data bus
D
70 Hz refresh
D
1280 x 1024 displayable resolution
D
3–color hardware cursor
D
4 Mbit video DRAMs (256K x 16)
D
Stacks on system board with two 96–pin DIN connectors
D
KMA (keyboard/mouse/audio) controller supports standard AT
keyboard and serial mouse. NOTE: Audio input/output is
NOT SUPPORTED.
8–bit controller (base system)
D
8 bits/pixel
D
Bt459 RAMDAC
D
256 active colors from palette of 16.7 million
D
Two overlay planes
D
3–color hardware cursor
24–bit controller
D
24 bits/pixel
D
Bt463 RAMDAC
D
True color display from a 16.7–million color palette
D
Dynamic, per–pixel allocation of planes and visual modes
D
2–color hardware cursor