System with real-time checking of privilege levels and the system's state to allow access to internal resources of the system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 27, 1991
Issued Date -
N/A
app pub date -
Aug 9, 1989
filing date -
Feb 18, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A data processing apparatus has a plurality of execution status and is adapted to control in accordance with the respective execution conditions the allowance of the execution of an instruction requiring the reference to the internal resource. The processing apparatus also comprises a register for holding the execution status, and another register for holding information controlling the reference to the internal resource. A comparator responds to the contents of the first and second registers to output a signal indicating whether the reference is allowed or not. The output signal and a strobe signal are fed to a gate, which then controls an actual reference to the internal resource.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully