Sharp PC-1403 - Page 222

2 1 6
50 I F A > L THE N P R IN T " A"
a nd r e s ul t s i n an erro r w h e n i t i s en tered t hr o ugh th e ke y b oar d .
Th e e r r o r o c cu r s becaus e a com m a nd wh i ch d oe s not e x i s t i n the P C - 12 1 O Ser i e s
d oes i n fact ex i st in t he P C -1 40 3 . To so l v e t h is pr obl e m, ins ert a TH E N co m m a nd
into the I F sta t e m e n t as follows .
50 I F A > L PRI N T " A" ( Pr i n t ou t " A" i f A > )
( 1 ) IF s tat e m en t
I f , fo r e x a m p l e ,
5 0 IF A > L P R I NT " A " (dis p la y " A " if A > L )
is fou n d i n th e pr ogr am fo r t h e P C -1 21 O S eri e s P o c k et C o mp u te r s, i t i s int e r pr e t e d
as
To u se P C- 1 2 1 0 S e r i e s pro gr am s on th e PC- 1 4 0 3 , they must be modi fi ed i n the sam e
wa y as P C-12 4 5 Se r ies progra ms e x c e pt it em s (2) and (7 ) . I n a d d ition, t he fo llo w i ng
modi fi ca ti o ns a re nec e ss ary .
Modifications Required for PC-1210Series
( 1 ) Th e P C - 1 24 5 Se ries uses a li ne nu mber rang i ng fr o m 1 to 99 9 , wherea s t he P C-
1403 h as a n e xte n ded l i n e num be r r a n g i ng fr o m 1 t o 6 5 27 9. T h e r e fore, t h e li ne
n um b er u ses 3 b ytes in R AM ( P C -1245 Se ri es u ses 2 b yt es) . T h e m o d i ficat i o n i s
c a rr i e d o u t a u to m atica lly whe n t he p r o gr am i s l oade d t h r ou gh the cassette t a pe .
H o w ev e r , t h ere i s a p oss i b il ity o f m e m ory o v erf lo w ( ERR O R 6 ) wh en l oadi n g o r
ex e c u i ing a l o n g p ro g r am . Fu rt her , whe n a s i ng i e li ne i s clo se t o 80 b yte s lo ng,
t his m od ificatio n m a y re su lt in th e e rasing of the e nd o f the l i ne .
( 2) I f th e ta p e stops or t h e r e ad a l a r m s top s w hen re a d i n g a pr o gram fr om a t ap e w it h
PC - 12 45 Series progr a m s , t he co m puter w i ll r e ma i n b u sy f or 1 or 2 s e co n ds a nd
t wo as t eri sks w ill app ea r i n the d i s p l a y .
T h i s is b eca u se the c omp ut er i s m od ify i n g t he l i ne n u mbers as de sc r i bed i n ( 1 }
ab o ve.
Additional modifications
APPENDIXG
Using Programs Wr i tten on Other PC Models