UPD64AMC datasheet(47/64 Pages) NEC

47 / 64 page

µPD64A, 65

Data Sheet U14380EJ2V0DS00

10. ASSEMBLER RESERVED WORDS

10.1 Mask Option Directives

When creating the

µPD64A and 65 program, it is necessary to use a mask option directive in the assembler’s

source program.

10.1.1 OPTION and ENDOP directives

From the OPTION directive on to the ENDOP directive are called the mask option definition block. The format

of the mask option definition block is as follows:

Format

Symbol field

Mnemonic field

Operand field

Comment field

[Label:]

OPTION

[; Comment]

ENDOP

10.1.2 Mask option definition directive

The directive that can be used in the mask option definition block is listed in Table 10-1.

The mask option definition can only be specified as follows. Be sure to specify the following directive.

Example

Symbol field

Mnemonic field

Operand field

Comment field

OPTION

USEPOC

; POC circuit incorporated

ENDOP

Table 10-1. Mask Option Definition Directive

Name

Mask Option Definition Directive

PRO File

Address value

Data value

POC

USEPOC

2044H

(POC circuit incorporated)

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