Sharp PC-1500 - Page 127

122
All and more about Sharp PC-1500 at http:/lwww.PC-1500.info
5-4-1. Character functions
• Combination of charac te r string
Combination of character string-I and character st ri ng-2
(i) ENTRY PREPARATION
• Preparation of character strings
Character string information
of t he character str in g-I is stored in t he a ri thmetic
r
egis ter (7 AOOH ~ 7 A07 H).
Cha
ra cter s tri ng information of t he character str in g-2 is stored in the arithmetic
register (7 A
I OH ~ 7 /\ I 7H).
• IO H is st0red in the string buffer poimer (7894H).
CD ENT RY ADD RESS
092 5H
• Subroutine is ca ll ed in the fo ll ow i ng format:
SJ P (A dd ress where PS H Xreg is writ ten)
DH DATA (E rr or re turn addr es s)
PSH Xrcg }
PSH Yr eg Wr ite in oth er addres ses.
JM P 0925
S W --~- -- - -~ PSHXreg
PS H Yre g
D ata
:r~.~" " ' [ : ~----~ - ~ -~ JMe '~~ -- -T"5 '
At error - - - - - ":., ~ RT N
Q) EXIT STATE
• Wh en no error
Returns to t
he addre ss n ex t to t he data. Resu ltant character string information wi ll
then be stored in t he arithme ti c 1register X (7AOOH ~7 A07H) and the combined
character stri
ngs will be stored in the st ring buffer (7 B I O H ~ ).
• When er ror
After st or ing t he e rro r code in t he UH register. it ret urn s to the data stored ad.dress
pl us one.
NO TE : F or details of character string infor ma tion. refer to the pa ragr ap h di sc u ss ing the
struct
ure of va ri ab le and pro gr am .
Do not sell this PDF !! !