參數(shù)資料
型號: RX30000
英文描述: RX4000 Installation | User's Manual[10/2001]
中文描述: RX4000安裝|用戶手冊[10/2001]
文件頁數(shù): 50/111頁
文件大?。?/td> 391K
代理商: RX30000
CHAPTER 6 REQUIRED MEMORY SPACE ESTIMATES
User's Manual U13687EJ1V2UM
50
6.3 EXAMPLE ESTIMATE OF REQUIRED MEMORY SPACE
This section describes how to estimate the memory space required for the RX4000 management region (system
memory region and user memory region).
[Prerequisites]
System information
Stack data for interrupt handlers: Memory area of 0x100 bytes must be reserved in System Memory Pool.
System maximum value information
Task priority range
Maximum number of tasks that can be created
Maximum number of semaphores that can be created
Maximum number of event flags that can be created
Maximum number of mailboxes that can be created
Maximum number of indirectly activated interrupt handlers that can be created :
Maximum number of memory pools that can be created
Maximum number of cyclic handlers that can be registered
Maximum number of extended SVC handlers that can be registered
:
:
:
:
:
0xf
0x2
0x1
0x2
0x3
0x4
0x2
0x1
0x1
:
:
:
Task information
Stack data for task: A memory area of 0x100 bytes must be reserved in System Memory Pool.
Memory pool information
Memory pool information: A memory area of 0x1000 bytes must be reserved in User Memory Pool.
Caution
It is assumed that the cre_tsk and cre_mpl system calls have not been issued in the user
processing program.
[Estimating method]
Management objects
OBJ_SIZ = {align4(320 + align32(0xf + 4)/8)} + {(0xf + 4) x 4}
+ {0x2 x 80} + {0x1 x 32} + {0x2 x 32} + {0x3 x 32}
+ {0x2 x 32} + {0x1 x 48} + {0x1 x 16}
= 908
Stack area for tasks
STK_SIZ = {align4(0x100 + 108) + align16(0x100 + 108)}
= 728
Stack area for interrupt handlers
INTSTK_SIZ = 256
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