Sharp PC-1500 - Page 40

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@ LOX (LoaO Xreg)
The contents of the R register. stack pointer. or program cou nt er are transferred to the
X rcgi >tcr.
No change takes place in na gs.
•Format
LDX Rr cg
I.DX S
I.DX
P
(EX) LOX S
Execute
• Operation
[Operand] · Xrcg
S= 4700H - - > Xr cg- 4 700 H
@ STA (STore Ace)
The contents of the accumulator are trans fe rred to the R L register. RH register. or the
external memory.
No change takes place
in nags.
•F or mat'
ST/\ RL
ST/\ RH
STA (Rreg)
ST A II( Rrcg)
STA (ab)
ST A ll (ab)
(EX) S TA XL
• Operation
A - [operand]
I
Execute I
A- ,_ O 0 1 1 0 0 1 I - ~ XL = 0 0 1 I 0 0 I 1
@ SOE (Store and DEcrement)
The contents of the accumul ator ar e transferred to the external memory (Rrcg). then
" I" is decremen te d from R r eg.
No change tak es place in nags.
• Format
SDE Rreg
(EX) SOE Yr eg
A=
~ l111
Yreg= 4700H
• Operati on
A - (Rrcg)
Rreg -
I - · Rreg
1 0 Contents = lo o __ 1_ 1_ 1 1 1 11
~ Exccutcol 4700H l v ..:.__:__J
Yreg 46ffli
35
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