Sharp PC-1500 - Page 131

126
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• Change of the da ta point er (789' 2H )
Function Data
RIGHTS
(data 01 78 90H) + 8
LEFTS
MI
DS (d ata of 7890H} + 16
• P reparation of character st ri ng
Address
Data
(Data
of 7890H} + 4
DO H
(Data of 7890H) + 5
Le adi ng ad dr ess or ch; i racter str ing (high or der o ne
by t e)
(Data of 7890H} + 6
Le adi ng ad dre ss of characte r str i ng (lo w or der one
by te }
(Data of 7890H} + 7
Size of chara cter strin9
NOTE:
High order byte of address is 7 AH.
Fo r actua l ch ar acter str ing. the string. the st ri ng buffer ( 7 BIOH ~7 13 5F H ) .can be
used.
• Preparation of numerical data
Numer ic-I is sto red in 7AOO H ~ 7A07H in deci ma l or hinary lig ur c.
(In the case of MID$. the numc ric-2 is stored from the ad dress of '' data
of 7890H" plus e ig ht to the a dd r e~s "data of 7890H" pl us li fteen)
Stored in t he ab ov e add ress in a decimal or binary format.
@ ENTRY ADDRESS
D9F3H
(D EXIT ST A TE
• When no er ror
UH = OOH
Address
7
A0 4H
7A05H
7
A0 6H
7A07H
Data
DO H
L
ea d in g address of char ac ter strin g (hi gh order o ne byte}
Lead in g add ress of character st rin g (l ow orde r one by te)
Size ol character string
Fo r a n act ua l ch aracter st ri ng . the st ring buffer (7B l O H ~ 7fUFH) can be us ed.
• When er ro r
UH -:,C OO H (UH is subst i tut ed with e rr or code.)
NOTE :
r--
z
c
-
3
Stack of ~
FOR
~
-
Hep resented "'
by the ![
poin1ct ~
(78 90H)
z
c:
3
~
;; ·
;.,
-
°'
O'
'<
a;
"'
-
Snack of
GOS UB
Represen1ed
hy the
p oin 1 er
(78-91 H)
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