78K datasheet(30/523 Pages) NEC

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CHAPTER 1 GENERAL

User’s Manual U15556EJ1V0UM

<12> Interrupt function

An interrupt disable instruction and an interrupt enable instruction are embedded in an object.

<13> CPU control instructions

Each of the following instructions is embedded in an object.

Instruction to set the value for halt to the STBC register

Instruction to set the value for stop to the STBC register

brk instruction

nop instruction

<14> callf/_ _callf function

The callf instruction stores the body of a function in the callf entry area and allows the calling of the function

with a code shorter than that with the call instruction. This improves executing speed and shortens the

object code.

<15> Usage of 16 MB expansion space

Object files that linearly access the 16 MB expansion space are generated by an option.

<16> Location function

The location of the saddr area can be changed by an option if the memory model is large or medium.

<17> Absolute address access function

Codes that access the ordinary memory space are created with direct inline expansion without resort to a

function call, and an object file is created.

<18> Bit field declaration

By specifying a bit field to be unsigned char type, the memory can be saved, object code can be shortened,

and execution speed can be improved.

<19> Function to change compiler output section name

By changing the compiler section output name, the section can be independently allocated with a linker.

<20> Binary constant description function

Binary can be described in the C source.

<21> Module name change functions

Object module names can be freely changed in the C source.

<22> Rotate function

The code to rotate the value of an expression to the object can be directly output with inline expansion.

<23> Multiplication function

The code to multiply the value of an expression to the object can be directly output with inline expansion.

This function can shorten the object code and improve the execution speed.

<24> Division function

The code to divide the value of an expression to the object can be directly output with inline expansion. This

function can shorten the object code and improve the execution speed.

78K Datasheet(PDF) 30 Page - NEC