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PM0044 数据表(PDF) 50 Page - STMicroelectronics

部件名 PM0044
功能描述  STM8 CPU programming manual
PDF  162 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

PM0044 数据表(HTML) 50 Page - STMicroelectronics

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STM8 addressing modes
PM0044
50/162
Doc ID 13590 Rev 3
Figure 18.
Short Pointer Indirect Long Indexed addressing mode example
Steps to determine
Effective Address
PC = 0692
PC = PC + 2 = 0694
EA = ((PC)) : ((PC)+1) + X
Before completion
Instruction Complete
A = (EA) = 40
New PC = PC + 1 = 0695
After completion
EA = 0803
08
00
92
D6
89
10
20
30
40
PC
0692
X
03
A
Previous value
Adder
EA
0803
ptr .word table
08
00
92
D6
89
10
20
30
40
ptr .word table
X
03
New PC
0695
A
40
800
03
table .byte 0x10,0x20,0x30
table .byte 0x10,0x20,0x30,
0089
008A
0692
0693
0694
800
801
802
803
0089
008A
0692
0693
0694
0800
0801
0802
0803
0695
LD A,([shortptr.w],X)
LD A,([shortptr.w],X)
0x
40
0x
40



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