Sharp PC-1500 - Page 32

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© ADR (ADd Rreg)
Con tents of the acc umul at0 r are added to the R register.
C. H. Z. and V may change.
•Format
ADR Rr eg
•Operation
I) RI. + A - RL
(C. H, Z. and V may change.)
2) RH + C- RH
(EX) ADR Xreg
Con tents of the accumu lator are added to X register.
A
= I 1
0 0 0 0
1
iJ
XL = I 0
0 0 1 0
1 I
XL= I 1
0 0 0
1
0
[JO Exec ute I
0 0 __, XH= 0
0 0 0 0
i I
XH = I 0 0 0 0
1
0
1
o I
C= l , H= O, Z= O, V= l
© SBC (SuBtract w it h Carry)
The contents of th e accumulator arc s ubtract ed by the int e rnal register or external
memory includ
ing C, and its result is stored in the accumul ator.
This op eration ma y al so be ex pre sse d in th e follow i ng manner .
Co
mp lement of t he in ti:rnal r eg ister or external memory is obta ined fir.s t. addi tio n is
carried
out includi ng carry . then it s result is st ored in the accu mu l ator .
C, H, Z, and V may chan ge .
•Fo rmat
SBC RL
SB C RH
SB C ( Rr eg)
SB C lf (Rreg)
SBC (ab)
SBC ff( ab )
(EX) SBC XL
•Operation
A - [ op e rand] - C - A
(C. H, Z. and V may change.)
or.
A +
[op erand] + C - A
( C. H. Z, and V may chan ge .)
Cont ents of XL re gist er ar e subtracted f rom t he ac cu mu lator.
A=
lo o
0 0
o I
XL= I 0
0 0
0 0 0
1 I
C= O
~
A=
Io
()
1 1 1 0 0
O
I Ex ec ute
A= I 0
0 0
1 0 1 1
l l
XL= I 1
1
0
l l 1 l
ol
C= l ,
H= l
, Z= O , V= O
C= l
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