HT46R46/C46/R47/C47/R48/R49
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4
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4
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0
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Special Purpose Data Memory
The following example shows how to clear a section of four RAM locations already defined as locations adres1 to
adres4.
data .section ¢data¢
adres1
adres2
adres3
adres4
block
db ?
db ?
db ?
db ?
db ?
code .section at 0 ¢code¢
org 00h
start:
mov a,04h
; setup size of block
mov block,a
mov a,offset adres1
mov mp,a
; Accumulator loaded with first RAM address
; setup memory pointer with first RAM address
loop:
clr IAR
inc mp
sdz block
jmp loop
; clear the data at address defined by MP
; increment memory pointer
; check if last memory location has been cleared
continue:
The important point to note here is that in the example shown above, no reference is made to specific RAM addresses.
Rev. 1.00
14
April 18, 2007
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
