Sharp CE-150 - Page 370

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(i) ENTRY ADDRESS
D461H
• Subroutirtt; n1u st be called in the fo llo ,v ing forn1at:
SJ P D46 I JI
DB FAM
DB DAL-'\ .. .. . . (D ec id es t he address to rclllrn when an error is met.)
(i) EXIT STA TE
• \Vhcn no error
· rh c leading address of the va riable is sto re d in the Urcg. a nd the varia bl e nan1c a nd
th e da ta size is sto red in t hi.. ~ arithf' ll . i.. 'tic regist er x. r 1i c11. it ret ur ns to th e ad d ress th at
fo ll ows Dll DATA.
7A05H 7A 06H
7A 07H
UH UL 1 000 10 00
Nu rne ric variab le
UL
t O XXX XXX ~ No nnu medc vat iablc
Le ading addn .~ss Size se cured
of v ariab le for' the var i ah le
• \\ lhen er ro r
Returns to t he add ress that da ta plus one is added to thc·"data '''rittcn ad <l rcss "" aftcr
s tori ng the e rr or c od e is store:d itk lJ l-1 .
• Key scan (I)
(j) E NTRY PR E PARATION
• '.\ one
(j) ENTRY ADDRESS
E4 2CH
CD EXIT STAT E
• · rh c kt·y code of the ke.y that depressed at th at ti 1n e is st or ed in the acc u rn u O ~ t o r.
If there is no key depr ess i on . "0 011 " \vi ii be ston :: d in t he: a cc u1 n ul;1t or .
• Key scan (II)
(]) ENTRY PREPARATION
• \ «H ll.:
<!) ENTRY ADDRESS
E243 H
CD EXIT STATE
• i ·hc k ey code of ne\vly depressed k ey is St () r ed in the <tccu n1illa t<, r. Altht)ugh it does
not rL'turn unti I a n e:< t kL'y is depressed. it 111a y ~ nd in auto- p<> , v<: r-ofT u nl ess a key is
<lc pn:~ sc d '"ithin seven rn in u t c~ . (llo'' 'cvcr. t he prcvi()\IS s 1 ;:ttt~ rt· :s11 n1c: s \v it h
_ ._
depression of t h L' I r~ I k t ~ ' ·
~ - ' .
When the @ ke y is pu shed. PB 7 of the PC -1 500 IF register ( ti FOO ll H) wi ll be
set.
NOTE: So t on g as P87 of the a ddr ess :: fOOBH is se t. "O EH .. '.v iii be st o( ed in t he
ac cunl t, .ilator.
P B7 or the add ress ;; FOOB H will be re se t when .. ANI "FOOB H. FDW is exe cu ted .
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