Information processor executing interruption program without saving contents of program counter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 30, 1991
Issued Date -
N/A
app pub date -
Dec 20, 1988
filing date -
Mar 2, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An information processor has at least one interface unit by which the processor is coupled to peripheral equipment. The interface unit can selectively generate either a first mode signal or a second mode signal when the processor performs an interruption operation according to request from the peripheral equipment. When the processor performs the interruption operation in response to the first mode signal, a stack operation for saving information necessary to restart execution of a program which is stopped by the interruption in a stack memory is performed before the start of the interruption operation. The processor can perform the interruption operation in response to the second mode signal without the stack operation, providing an improved processor with less overhead. The two interruption mode technique is described in a number of applications, including D/A conversion, serial data transmission and reception, and operation of computer peripheral devices.
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