有哪些信誉好的足球投注网站- 1、本文档被系统程序自动判定探测到侵权嫌疑，本站暂时做下架处理。
- 2、如果您确认为侵权，可联系本站左侧在线QQ客服请求删除。我们会保证在24小时内做出处理，应急电话：400-050-0827。
- 3、此文档由网友上传，因疑似侵权的原因，本站不提供该文档下载，只提供部分内容试读。如果您是出版社/作者，看到后可认领文档，您也可以联系本站进行批量认领。
InstructionSetNomenclature
StatusRegister(SREG)
SREG:StatusRegister
C:CarryFlag
Z:ZeroFlag
N:NegativeFlag8-bit
V:Two’scomplementoverflowindicator
InstructionSet
S:N⊕V,Forsignedtests
H:HalfCarryFlag
T:TransferbitusedbyBLDandBSTinstructions
I:GlobalInterruptEnable/DisableFlag
RegistersandOperands
Rd:Destination(andsource)registerintheRegisterFile
Rr:SourceregisterintheRegisterFile
R:Resultafterinstructioniecuted
K:Constantdata
k:Constantaddress
b:BitintheRegisterFileorI/ORegister(3-bit)
s:BitintheStatusRegister(3-bit)
:IndirectAddressRegister
(X=R27:R26,Y=R29:R28andZ=R31:R30)
A:I/Olocationaddress
q:Displacementfordirectaddressing(6-bit)
Rev.0856D–AVR–08/02
I/ORegisters
RAMPX,RAMPY,RAMPZ
RegistersconcatenatedwiththeX-,Y-,andZ-registersenablingindirectaddressingofthewholedataspaceonMCUswith
morethan64Kbytesdataspace,andconstantdatafetchonMCUswithmorethan64Kbytesprogramspace.
RAMPD
RegisterconcatenatedwiththeZ-registerenablingdirectaddressingofthewholedataspaceonMCUswithmorethan64K
bytesdataspace.
EIND
RegisterconcatenatedwiththeinstructionwordenablingindirectjumpandcalltothewholeprogramspaceonMCUswith
morethan64Kbytesprogramspace.
Stack
STACK:Stackforreturnaddressandpushedregisters
SP:StackPointertoSTACK
Flags
⇔:Flagaffectedbyinstruction
0:Flagclearedbyinstruction
1:Flagsetbyinstruction
-:Flagnotaffectedbyinstruction
2AVRInstructionSet
0856D–AVR–08/02
文档评论（0）