參數(shù)資料
型號: AN1218
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: HC05 to HC08 Optimization
中文描述: 以HC08的優(yōu)化HC05
文件頁數(shù): 34/56頁
文件大小: 417K
代理商: AN1218
Application Note
AN1218 Rev. 2
34
Appendix A — New CPU08 Indexing Instruction Examples
************************************************************
*
* File : INDEX.ASM
* Description :
* Shows examples for new CPU08 indexing
* instructions - AIX, CLRH, CPHX, LDHX, STHX
* Not all addressing modes are shown.
* Note : Please consult the CPU08 Reference Manual
* for further details on these instructions
* Code is written for educational
* purposes only
*
**************************************************************
ORG $200
***** AIX - add immediate to index register
START LDHX #$1010 ; H:X
$1010
AIX #-10 ; H:X = $1010 + (-$10)
; = $1000
***** CLRH - clear index high
LDHX #$1290 ; H:X
$1290
CLRH ; H:X
$0090
***** CPHX - compare 16-bit index register
LDHX #$1290 ; H:X
$1290
; CCR = %0110,1000
; CCR before CPHX, Z=0
CPHX #$1290 ; H:X
$1290
; CCR = %0110,1010
; CCR after CPHX, Z=1
***** LDHX - load 16-bit index register
LDHX #$1290 ; H:X
$1290
***** STHX - store 16-bit index register
LDHX #$1290 ; H:X
$1290
STHX $50 ; ($50)
(H:X)
; ($50)
$12
; ($51)
$90
DONE NOP
BRA DONE
***** Initialize the reset vector
ORG $FFFE
DW START
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
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