RTEMS 4.6.1 On-Line Library

Memory Requirements RTEMS Code Space Worksheet

RTEMS Hewlett Packard PA-RISC Applications Supplement

8.4: RTEMS Code Space Worksheet

The RTEMS Code Space Worksheet is a tool provided to aid the RTEMS application designer to accurately calculate the memory required by the RTEMS run-time environment. RTEMS allows the custom configuration of the executive by optionally excluding managers which are not required by a particular application. This worksheet provides the included and excluded size of each manager in tabular form allowing for the quick calculation of any custom configuration of RTEMS. The RTEMS Code Space Worksheet is below:

RTEMS Code Space Worksheet

Component	Included	Not Included	Size
Core	x,131	NA
Initialization	x,132	NA
Task	x,133	NA
Interrupt	x,134	NA
Clock	x,135	NA
Timer	x,136	148
Semaphore	x,137	149
Message	x,138	150
Event	x,139	151
Signal	x,140	152
Partition	x,141	153
Region	x,142	154
Dual Ported Memory	x,143	155
I/O	x,144	156
Fatal Error	x,145	NA
Rate Monotonic	x,146	157
Multiprocessing	x,147	158
Total Code Space Requirements

RTEMS Hewlett Packard PA-RISC Applications Supplement