Sharp PC-1500 Technical Reference Manual page 41

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SIN (Store and INcremenl)
The
conten~
of the
accumu~~tor
arc
tran>fcm."'d to the external
memo~
(Rrcgl.
then
-1-
is incremented to
Rreg.
>lo change takes place in flags.
• Forn1at
SI N Rrcg.
(EX) SIN Yreg
A- 0 0 1 1 1 1 1
Yreg- 4700H
@
STX (STore Xreg)
• Opcrntion
J\ - ( Rrcg)
Rrcg
+
I - Rrcg
Conlents
1 , - 00 1 1 1 1 1 1
E1t.ccu1c ot 4 OOH
Y rcg= 470Hi
The con1cn1s
or
Xrcg a rc transferred to the R register. stack pointer. or program
counter.
:\o chani,oe takes place in
Oags.
• Format
ST X Rrcg
STX S
STX P
@ PSH (PuSH)
• Operation
Xrcg -
(or crnnd)
T he contents of the accumulator or R register :tre stacked in the mcmor) >Jl<'Ciricd by
the stack pointer.
In the ca'c of 1hc accumulator. chc scack pointer is decremented by o ne. In the case of
L hc R regisrcr.
chc
s1ack pointer is dccrcnlcn1cd
by
L\\'O.
• Formal
0
l'SH A
0
l'S ll
Rrc~
• O pcrntion
J\ -
· (S)
S -
I ·
S
R L • (Sl
S I - S
R ll · (SJ
S - I · S
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