Special function control system for a dual microprocessor progra

Boots – shoes – and leggings

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

364107, 364200, G06F 1516, G06F 1546

Patent

active

042153999

ABSTRACT:
An intelligent programmable process control system including a first microprocessor which scans and executes a sequence of boolean logic functions and a second microprocessor which performs complex operations including arithmetic computations beyond the capabilities of the first microprocessor. The first microprocessor transmits interrupt requests to the second microprocessor when a scanned sequence instruction requires complex operations to be performed. First flag bit register indicates to the first microprocessor that a requested operation has been queued-up. Second flag bit register indicates to the first microprocessor that the requested operation has been completed. When the first microprocessor requires complex operations, it checks the state of a respective first flag bit register to determine whether the complex operation has already been queued-up and if so, checks the state of a respective second flag bit register to determine whether the queued-up function has been completed by the second microprocessor. If the complex operation has been queued-up and the second flag bit indicates that the operation has not been completed, the first microprocessor continues scanning and executing its sequence of functions asynchronously with respect to the second microprocessor. If the first flag bit indicates that the operation has not been queued-up, then the first microprocessor transmits an interrupt request to the second microprocessor.

REFERENCES:
patent: 3810104 (1974-05-01), Markley
patent: 3959775 (1976-05-01), Valassis et al.
patent: 4029950 (1977-06-01), Haga
patent: 4034354 (1977-07-01), Simmons
patent: 4058711 (1977-11-01), Ondercin et al.
patent: 4064395 (1977-12-01), Schubeler et al.
patent: 4118771 (1978-10-01), Pomella et al.
patent: 4149235 (1979-04-01), Froyd et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Special function control system for a dual microprocessor progra does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Special function control system for a dual microprocessor progra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Special function control system for a dual microprocessor progra will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-907454

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.