USBB17RX78K4-XXX NEC Electronics, USBB17RX78K4-XXX Datasheet - Page 92

• Manufacturer Part Number: USBB17RX78K4-XXX
• Description: 78K/4 series realtime OS
• Manufacturer: NEC Electronics

Therefore, the stack size of each system call must be determined taking into consideration the stack size used for the
user task and the maximum stack size of the system call.
However, when an interrupt occurs, this task stack area uses 4 bytes.
language is as shown in the following table.
The stack area of the task that has issued the system call is used as a stack area used for system call processing.
The stack area which is used for the interrupt handler and the timer processing can be set to an arbitrary address.
The maximum stack size for the processing of each system call when the program is described in assembly
APPENDIX 8
MAXIMUM STACK SIZE USED BY EACH SYSTEM CALL
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