Data I/O 29B, Руководство оператора

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Remote Control
Texas Instruments SDSMAC Formal, Code 90
Data files In the SDSMAC format coosis1 of a Sloi1-of-FU8 record. da1o rocords. and an End-of.file
r eoo r d . See 1ne llgu r o .
Each rec0€d is composed ol a series of small lields. ooch lnlllated bv a tog eharacler. The pmg r orn •
mer recognizes ancJ ocknowledges lne folfowlng lag choracters:
O • alway, followed by a flle hoode r .
7 · always tonowoo by a surncheck which lhe programme< acknowledges,
8 - always foDowed by a sumchock which tho programmer Ignores.
Q - alwa)'!I fol1owed by a IOQCI address.
B - atwovs followed by 4 dato charaeters.
F - denotes the end of a dara record,
ltle Star1-of.flle recOl'd begins wl1h a tag clxlrocter and a 12-chOJacrar me header, Tho first four
c ha r a clers are the byte count of Iha 16-bl1 dola bvtes; the remaining flle heooo characters are 1he
name of !he file and may be any ASC11 characters (In hex notation), Noxl come l n1 e r s per $Qd address
fields ond oota llelds (eoch wi1h log characters). If ony data llelds op�r before Iha first oodres$
,tetd In Iha me, the first of !hose oata fields Is assigned to odc;l,ess 0000
.
Address fields rnav be ex­
pressed tor any data byte. but oone ore required. The roco,d ends with o sumchOci< field lnlltoted
by the lag charocter 7 or 8, a 4-clxlracter sumchecl<.. and the tag character F. The surncMck Is the
two's complemont or 1 1.e sum 01 ttle 8-blt ASCII va l ue$ of the ctioraci0'1$, beginning with the first tog
character and ending with lhe sumcheck tag charactes (7 or 8),
Doto records follow the same f o r ma l as the S1art-of-Flle reoord b<JI do not contain a file header. The
ond-at..flte record consists of a colon(:) only. The oulpul tral\Slotor sends a control S o,ter lh8 colon.
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