USBB17RX78K4-XXX NEC Electronics, USBB17RX78K4-XXX Datasheet - Page 32
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USBB17RX78K4-XXX
Manufacturer Part Number
USBB17RX78K4-XXX
Description
78K/4 series realtime OS
Manufacturer
NEC Electronics
Datasheet
1.USBB17RX78K4-XXX.pdf
(96 pages)
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to be saved or restored. This causes the overhead of these tasks to be slightly larger than the tasks allocated to
register banks 2 to 7.
returned to the bank.
Register bank 1 is shared by multiple tasks. Therefore, dispatching or preempting make it necessary for registers
Fig. 3-2 shows the flow of the processing to be performed since the system call has been issued until control is
CHAPTER 3
Issurance of system call
Selected task
RX78K/IV BASIC OPERATIONS AND CONTROL BLOCKS
Task
Fig. 3-2 Flow of Overall Processing
Processing system call
Save registers, etc.
(when using RB1)
RX78K/IV
Dispatch
23
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