Enhanced CPU return address stack
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 3, 1989
Issued Date -
N/A
app pub date -
Nov 2, 1987
filing date -
Sep 29, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Hardware for performing microcode branching in a central processing unit allows for two different speeds of branches which can be used by microcode and includes flexibility to optionally inhibit the extra lines which enter the pipeline on a branch. A default branch path can be taken for a test result not yet available and can be replaced with a correct branch target during a clock pause if the test result is false. A return address stack is provided with decoupled loading and pushing to accommodate the two branching speeds. Microcode can specify loading the return address stack with a literal or register value to allow vectored branching and return to a desired line after a delayed call.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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