Lexicon MPX-1 User Manual

FIRST - A WORD OR TWO OF WARNING!
This manual is intended to guide the sophisticated systems integrator or
OEM through the hardware features of the MPX-l. This manual is not intended for
novice or inexperienced users. If you are an end-user who has purchased an MPX-
t:ne J.nt:errupt: response 1.S nanuJ.eu oy LIlt= UU-UU<:lJ.U .LLlLCL L up'" ... VLl ... LV ............ ~ •• - -~ -,
taking up no processing time on the bus.
When needed, the MPX-1 can access any system resource on the bus. This
means that it can talk to any I/O port or memory location on the bus. It does
this by requesting the bus from the permanent master on a cycle-by-cycle basis.
This request/grant procedure is fully arbitrated to 16 levels as provided for by
the IEEE 696/5-100 bus standard. This allows up to 16 such devices to exist in
a system at any given time. Multiple MPX-ls could even be used.
The uses of the MPX-l are vast. Obvious uses would include terminal inter-
rupt handlers, print spoolers, task allocation and management, and resource
control. A unique feature of the MPX-l allows it to load execution code from
the system memory so that the MPX-l's function can be altered dynamically.
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Lexicon MPX-1 Specifications

General

Brand	Lexicon
Model	MPX-1
Category	Recording Equipment
Language	English