Data processing apparatus with a coprocessor which asynchronously executes commands stored in a coprocessor command storage section
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United States of America Patent
Stats
-
Mar 30, 1999
Issued Date -
N/A
app pub date -
Aug 21, 1997
filing date -
Feb 7, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A data processing apparatus wherein, upon occurrence of an exception in a coprocessor, appropriate and flexible exception processing can be performed and the regularity of operation of the coprocessor can be verified. The data processing apparatus includes a command execution control section provided in a CPU for receiving a command to access a coprocessor command storage section of the coprocessor and executing the command to access the coprocessor command storage section. A group of commands is adopted for executing such access so that the CPU can execute access to the coprocessor command storage section. The data processing apparatus can be applied to a data processing apparatus having a coprocessor such as a floating-point calculation apparatus.
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