USBB17RX78K4-XXX NEC Electronics, USBB17RX78K4-XXX Datasheet - Page 34

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

3.2 RX78K/IV Control Block
configuration, and RX78K/IV uses these blocks for system calls or for management. Therefore, the state of the
control blocks can be always monitored by the user task. The types of RX78K/IV control blocks are as follows:
3.2.1 Control block memory area
all parameters are passed to system calls (related to control blocks) by specifying an address by using a symbol
name.
RX78K/IV has control blocks to manage each object. The control blocks are created by the user at time of
<1> TCB (Task Control Block)
<2> EVT (Eventflag)
<3> SEM (Semaphore)
<4> MBOX (Mail Box)
<5> MPL (Memory Pool)
<6> HCB (Cyclic Handler Control Block)
As described above, the control blocks are created by the user at time of configuration with RX78K/IV. Therefore,
Fig. 3-4 shows an example of parameters.
CHAPTER 3
TSKID_1
takid = TSKID_1
RX78K/IV BASIC OPERATIONS AND CONTROL BLOCKS
Queue area
Fig. 3-4 Example of Parameters
TCB
xxxid = Starting adderss of target object
EVTID_1
flgid = EVTID_1
Queue area
EVT
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