SC73P1601

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

REV:1.4

2009.08.03

Http: www.silan.com.cn

Page 16 of 22

should be higher than that above, or a fault is occurred during compiling. 000H is defaulted if no address is set by

ORG instruction.

Example:

ORG 0100H

EQU

Format:

Symbol EQU digital

Function:

Define a digital as a symbol. Symbol ＝ digital.

Expression:

Symbol should be legal, and digital should be binary, decimal or hexadecimal. There is no colone before

EQU in definition, and it can only useful after the definition.

Example:

Data1 EQU 12H

Data2 EQU 1001B

DB

Format:

[Label:] [num] DB data

Function:

Define data with number of num.

Expression:

Label: selectable

Num: indicates number of data, default value is 1.

Data: data to be written to ROM. It should smaller than 0X200 as ROM is only 9-bit.lower 9-bit value of data

is taken with warning if it is more than 0x200.( only lower 8-bit is taken if the instruction is used for data table)

Example:

DB 12H

; Define one data

DB 10010B

; Define one data

12H DB 55H ; Define continuous 18 data

JMPS

Format:

[Label:] JMPS address

Function:

Jump in ROM.

Expression:

Label: selectable

Address can be a digital, symbol defined by EQU or the address symbol.

Combined by:

LD MBR, #k

BSS label