IA6805E2
29 August 2007
Microprocessor Unit
As of Production Version 00
Control Instructions:
These are used to control processor operation during program execution. They are register
reference instructions.
Function
Transfer A to X
Transfer X to A
Set carry bit
Mnemonic
TAX
TXA
SEC
Clear carry bit
CLC
Set interrupt mask bit
Clear interrupt mask bit
Software interrupt
Return from subroutine
Return from interrupt
Reset stack pointer
No-Operation
SEI
CLI
SWI
RTS
RTI
RSP
NOP
STOP
WAIT
Stop
Wait
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