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The Erin64 has a very simple
process using "Flash Memory" as follows:
1. Issue Global
Reset
2. Clear Program &
Local Memory, Language Processor
and Peripheral Processor
3 Write Program
& Local Memory, both processors
4. Initialize
Character Generators
5. Issue "RUN" to both
Processors
6. Both Processors
commence an "Initialize Routine"
starting at
address Zero. Upon completion both
Processors
execute a HLT Instruction with Interrupts
Enabled. The Processors have nothing to process
untill a USER
at a one of 128 Terminals makes either
a Keyboard
entry or a Mouse Click selection. Or if an
Inter-system
Interrupt (ISI) request comes via the
Expansion
Port to the Peripheral Processor for
a
Hard Disk
operation.
For what it's worth
Dick Hartney
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