Communications: electrical – Digital comparator systems
Patent
1975-03-26
1976-12-28
Springborn, Harvey E.
Communications: electrical
Digital comparator systems
G06F 300
Patent
active
040004872
ABSTRACT:
An input/output processing system includes a plurality of active modules, a plurality of passive modules, at least one memory module and a system interface unit having a plurality of ports, each of which connect to a different one of the modules. The active modules include an input/output processing unit which processes interrupts and executes command sequences and a multiplexer unit which directly controls transfers between the memory module and any one of the peripheral devices coupled to different ones of a plurality of ports of the multiplexer unit. The system interface unit which operatively provides connections between the different modules includes apparatus for generating steering codes defining the physical location of each module requiring service by another module of the system. The system interface unit appends information provided by the particular module generating a requesting request for attention to the steering code generated. The generation of steering code information by the system interface unit and the module included in such requests insures that only authorized accesses are made to the different modules during the input/output processing unit's execution of programs during the running of processes associated therewith.
REFERENCES:
patent: 3447135 (1969-05-01), Calta et al.
patent: 3483522 (1969-12-01), Figueroa
patent: 3638198 (1972-01-01), Balogh, Jr.
patent: 3665404 (1972-05-01), Werner
patent: 3665415 (1972-05-01), Beard et al.
patent: 3702462 (1972-11-01), England
patent: 3820079 (1974-06-01), Bergh et al.
patent: 3825903 (1974-07-01), Brown
patent: 3831151 (1974-08-01), Jones, Jr. et al.
patent: 3848233 (1974-11-01), Lotan et al.
Monahan Earnest M.
Patterson Garvin Wesley
Shelly William A.
Driscoll Faith F.
Honeywell Information Systems Inc.
Reiling Ronald T.
Springborn Harvey E.
LandOfFree
Steering code generating apparatus for use in an input/output pr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steering code generating apparatus for use in an input/output pr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steering code generating apparatus for use in an input/output pr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-150983