Dot Matrix Printer Users Manual

DOWNLOAD CHARACTER COMMANDS
M A
D
H
~ “ C n
27 38 0 d IB 26 W n]
s
?
d M m d d m m m
m3 ... mll
d ... m d ... m
Definesoneormorenewdraftcharactersandstem themin RAM
forlateruse.DIPswitch1-2mustbe OFF;otherwiseRAMis used
as an inputbuffer,not for downloadingcharacters,andthis com-
mandisignored.Draftmodemustbeselectedbefotethiscommand
is executed.
nl is thecharactercodeof thefirst characterdefinedand ti is the
charactercodeof thelastcharacterdefined.nl mustbe equalto or
lessthanti. Useofcharactercodes32(space)and127(deletecode)
shouldbe avoidedif possible.
Eachcharacters definedbyanattributebyte(m(l)and11databytes
(ml, m2, ..... roll).
Themostsignificantbitof the attributebyteis 1if thecharacteris
an ascender(positionedentirelyabovethe baseline)or Oif it is a
descender(descendingbelowthebaseline).The attributebytealso
indicatestheamountofwhitespacetotheleftofthecharacter(Oto
7 dots,specifiedbybits4 to 6), andthewidthof thecharactercell,
includingthisspace(4to 15dots,specifiedby bitsOto 3).Theleft
spaceandcellwidthattributesareusedonlyinproportionalspacing.
Eachdatabyteindicateseightverticaldots,withtheMSBbeingthe
top dotandtheLSB thebottomdot.Thesecorrespondto pins 1to
8 or2 to9 of theprinthead,dependingon whetherthecharacteris
an ascenderor descender.
For furtherdetails,pleasereferto the Chapter5.
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