UPD6P9 datasheet(56/73 Pages) RENESAS

56 / 73 page

µPD67, 67A, 68, 68A, 69

Data Sheet U14935EJ2V1DS

10. ASSEMBLER RESERVED WORDS

10.1 Mask Option Directives

When creating a program in the

µPD67, 67A, 68, 68A, and 69, it is necessary to use a mask option quasi-directive

in the assembler’s source program.

10.1.1 OPTION and ENDOP quasi-directives

The quasi-directives from the OPTION quasi-directive down to the ENDOP quasi-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 quasi-directives

The quasi-directives that can be used in the mask option definition block are listed in Table 10-1.

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

Example

Symbol field

Mnemonic field

Operand field

Comment field

OPTION

USECAP

; Capacitor for oscillation

ENDOP

incorporated

Table 10-1. Mask Option Definition Directives

Name

Mask Option Definition Quasi-Directive

PRO File

Address Value

Data Value

CAP

USECAP

2043H

(Capacitor for oscillation incorporated)

NOUSECAP

(Capacitor for oscillation not incorporated)

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