perm filename VARIAN.XGP[TH,ROB] blob
sn#426898 filedate 1979-12-02 generic text, type T, neo UTF8
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␈↓ ∧D␈β↓H␈¬↓THE VARIAN PLOTTER INTERFACE
␈↓ ↓H␈βα∧␈¬βThe␈αVarian␈αPlotter␈αInterface␈αallows␈αfull␈α
control␈α
of␈α
all␈α
functions␈α
provided␈α
by␈α
the␈α
plotter␈α
and␈α
medium
␈↓ ↓H␈βα"␈¬βspeed␈α∂data␈α∂flow␈α∂using␈α∂the␈α∂I/O␈α∂bus.␈α∂The␈α∞CONO␈α∞and␈α∞CONI␈α∞instructions␈α∞access␈α∞control␈α∞functions.
␈↓ ↓H␈βα@␈¬βThey␈α
have␈α
the␈α
following␈α
format:
␈↓ ↓H␈βα↑␈¬α___
␈↓ ↓H␈βα|␈¬α |18
␈↓ ↓H␈ββ~␈¬α |19
␈↓ ↓H␈ββ8␈¬α___|20␈↓ α`SCAN COMPLETE␈↓ ε((READ ONLY)
␈↓ ↓H␈ββV␈¬α |21␈↓ α`SYSTEM NOT READY␈↓ ε((READ ONLY)
␈↓ ↓H␈ββt␈¬α |22␈↓ α`BUFFER BUSY␈↓ ε((READ ONLY)
␈↓ ↓H␈β∧∩␈¬α___|23␈↓ α`PAPER CONTROLLER BUSY␈↓ ε((READ ONLY)
␈↓ ↓H␈β∧0␈¬α |24␈↓ α`BOTTOM OF FORM␈↓ ε((READ ONLY)
␈↓ ↓H␈β∧N␈¬α |25␈↓ α`(ALWAYS 0)␈↓ ε((READ ONLY)
␈↓ ↓H␈β∧l␈¬α___|26␈↓ α`READ READY␈↓ ε((READ ONLY)
␈↓ ↓H␈β¬
␈¬α |27␈↓ α`NOT ON LINE␈↓ ε((READ ONLY)
␈↓ ↓H␈β¬(␈¬α |28␈↓ α`SUPPLIES LOW␈↓ ε((READ ONLY)
␈↓ ↓H␈β¬F␈¬α___|29␈↓ α`VIDEO BUSY␈↓ ε((READ ONLY)
␈↓ ↓H␈β¬d␈¬α |30␈↓ α`TEST␈↓ ε((WRITE ONLY)
␈↓ ↓H␈βεα␈¬α |31␈↓ α`DATA REQUEST␈↓ ε((READ ONLY)
␈↓ ↓H␈βε ␈¬α___|32␈↓ α`INTERRUPT ENABLE␈↓ ε((READ/WRITE)
␈↓ ↓H␈βε>␈¬α |33␈↓ α`PI33␈↓ ε((READ/WRITE)
␈↓ ↓H␈βε\␈¬α |34␈↓ α`PI34␈↓ ε((READ/WRITE)
␈↓ ↓H␈βεz␈¬α___|35␈↓ α`PI35␈↓ ε((READ/WRITE)
␈↓ ↓H␈βπ6␈¬βThe␈α
definition␈αof␈αbits␈α20␈αto␈α29␈αare␈αprecisely␈αas␈αdescribed␈αin␈αthe␈αVarian␈¬↓␈α"Service␈αand␈αMaintenance
␈↓ ↓H␈βπT␈¬↓Manual␈αfor␈αStatos␈α41/42␈αSeries␈αPrinter/Plotters."␈¬β␈αDATA␈αREQUEST␈αindicates␈αthat␈αthe␈αinterface␈αis
␈↓ ↓H␈βπr␈¬βready␈αfor␈αa␈αword␈αof␈αdata.␈αThis␈αbit␈αis␈αnormally␈αon␈αwhen␈αthe␈αdevice␈αis␈αidle,␈αand␈αa␈αCONO␈αwith␈αa␈αPI
␈↓ ↓H␈βλ⊂␈¬βchannel␈α
and␈α
INTERRUPT␈α
ENABLE␈α
will␈α
cause␈α
an␈α
immediate␈α
interrupt.
␈↓ ↓H␈βλL␈¬βA␈α∂DATAO␈α∂instruction␈α∂provides␈α∂data␈α∂for␈α∂the␈α∂plotter.␈α∞The␈α∞36-bit␈α∞data␈α∞word␈α∞is␈α∞divided␈α∞into␈α∞four
␈↓ ↓H␈βλj␈¬β9-bit␈α
bytes.␈αIn␈αeach␈αbyte,␈αthe␈αhigh␈αorder␈αbit␈αindicates␈αwhether␈αthe␈αplotter␈αwill␈αinterpert␈αthis␈αbyte␈αas
␈↓ ↓H␈β λ␈¬βdata␈αor␈αcontrol.␈αIf␈αthe␈αbit␈αis␈αoff,␈αthe␈αremaining␈αeight␈αbits␈αare␈αdata␈αwhich␈αwill␈αbe␈αused␈αfor␈αcharacters
␈↓ ↓H␈β &␈¬βor␈α∞graphics,␈α∞depending␈α∞on␈α∞previously␈α∞provided␈α∞control␈α∞commands.␈α∞If␈α∞the␈α∞bit␈α∞is␈α∞on,␈α∞the␈α∞remaining
␈↓ ↓H␈β D␈¬βeight␈α
bits␈α
are␈α
interperted␈α
as␈αcommands␈αas␈αdescribed␈αin␈αthe␈αVarian␈αplotter␈αmanual.␈αThe␈αhigh␈αorder
␈↓ ↓H␈β b␈¬βbyte␈α
in␈α
the␈α
word␈α
is␈α
given␈α
to␈α
the␈α
plotter␈α
first,␈α
followed␈α
by␈α
succedingly␈α
lower␈α
order␈α
bytes.␈αWhen␈αthe
␈↓ ↓H␈β
␈¬βword␈α
is␈α
exhausted,␈α
the␈α
interface␈α
will␈α
interrupt␈α
on␈α
the␈α
PI␈α
channel␈α
indicated.
␈↓ ↓H␈β
<␈¬βFor␈αdiagnostic␈α
purposes,␈α
a␈α
DATAI␈α
instruction␈α
will␈α
read␈α
whatever␈α
is␈α
currently␈α
in␈α
the␈α
interface␈α
buffer.
␈↓ ↓H␈β
Z␈¬βIn␈αaddition,␈αa␈αCONO␈αinstruction␈αwith␈αthe␈α
TEST␈α
bit␈α
set␈α
will␈α
cause␈α
the␈α
interface␈α
buffer␈α
to␈α
shift␈α
left␈α
9
␈↓ ↓H␈β
x␈¬βbits.␈αThese␈αfeatures␈αare␈αonly␈αuseful␈αif␈αthe␈αplotter␈αis␈αdisconnected␈αor␈αoff-line,␈αotherwise␈αthe␈αdata␈αwill
␈↓ ↓H␈β⊗␈¬βbe␈α
changing␈α
during␈α
a␈α
DATAI,␈α
or␈α
a␈αCONO␈αwith␈αTEST␈αwill␈αcause␈αrandom␈αextra␈αshifts␈αand␈αmung
␈↓ ↓H␈β4␈¬βthe␈α
data.
␈↓ ∧=␈β↓H␈¬↓SUMMARY OF PLOTTER COMMANDS
␈↓ ↓H␈βα∧␈¬αDATA␈↓ α`COMMAND
␈↓ ↓H␈βα@␈¬α500␈↓ α`CHARACTER GENERATOR SELECT (THIS IS THE DEFAULT ON RESET)
␈↓ β⊂␈βα↑␈¬βIdentifies␈α
all␈αfollowing␈αdata␈αtransfers␈αas␈αalphanumeric␈αdata.␈αThe␈αcommand␈αis␈αstored
␈↓ β⊂␈βα|␈¬βinternally␈α
in␈α
the␈α
Statos␈α
and␈α
is␈α
changed␈α
only␈α
if␈α
a␈α
raster␈αwrite␈αselect␈αcode␈αis␈αreceived.
␈↓ β⊂␈ββ~␈¬βSystem␈α
reset␈α
selects␈α
the␈α
character␈α
generator.
␈↓ ↓H␈ββV␈¬α560␈↓ α`SELECT CHARACTER GENERATOR IN MUX MODE
␈↓ β⊂␈ββt␈¬βThis␈α
mode␈α
is␈α
complicated␈α
and␈α
is␈α
explained␈α
below.
␈↓ ↓H␈β∧0␈¬α740␈↓ α`RASTER WRITE SELECT
␈↓ β⊂␈β∧N␈¬βIdentifies␈α
all␈α
the␈α
following␈α
data␈αtransfers␈αas␈αraster␈α(graphics)␈αdata.␈αThe␈αcommand␈αis
␈↓ β⊂␈β∧l␈¬βchanged␈α
only␈α
if␈αa␈αcharacter␈αgenerator␈αselect␈αcontrol␈αcode␈αor␈αa␈αsystem␈αreset␈αcommand
␈↓ β⊂␈β¬
␈¬βis␈α
received.
␈↓ ↓H␈β¬F␈¬α644␈↓ α`AUTOSTEP RASTER WRITE SELECT
␈↓ β⊂␈β¬d␈¬βSelects␈αa␈αmode␈αof␈αoperation␈αin␈αwhich␈αthe␈αline␈αsync␈αand␈αstep␈αcommands␈α
are␈α
generated
␈↓ β⊂␈βεα␈¬βinternally␈αafter␈αentry␈αof␈αa␈αfull␈αline␈αof␈αraster␈αinformation.␈αOnce␈αthe␈αAutostep␈αmode␈αis
␈↓ β⊂␈βε ␈¬βselected,␈α
each␈α
raster␈α
scan␈α
must␈α
contain␈α
a␈α
full␈α
line␈α
of␈α
data.
␈↓ ↓H␈βε\␈¬α445␈↓ α`AUTOSTEP MODE RESET
␈↓ β⊂␈βεz␈¬βClears␈α
the␈α
Auto␈α
step␈α
mode.␈α
Autostep␈α
is␈α
also␈α
cleared␈α
by␈α
reset.
␈↓ ↓H␈βπ6␈¬α443␈↓ α`LINE SYNC/STEP
␈↓ β⊂␈βπT␈¬βCauses␈α
the␈α
paper␈α
to␈α
advance␈αone␈αstep␈αincrement.␈αIf␈αthere␈αis␈αdata␈αin␈αthe␈αbuffer,␈αit␈αis
␈↓ β⊂␈βπr␈¬βprinted.
␈↓ ↓H␈βλ.␈¬α663␈↓ α`FORM FEED (NO-OP ON 22 INCH WIDE PLOTTER)
␈↓ β⊂␈βλL␈¬βCauses␈α
fan-fold␈α
paper␈α
to␈α
move␈α
to␈α
the␈α
top␈α
of␈α
the␈α
next␈α
form.
␈↓ ↓H␈β λ␈¬α464␈↓ α`STEP
␈↓ β⊂␈β &␈¬βCauses␈α
the␈α
paper␈α
to␈α
advance␈αone␈αstep␈αincrement.␈αIf␈αthere␈αis␈αdata␈αin␈αthe␈αbuffer,␈αit␈αis
␈↓ β⊂␈β D␈¬βprinted.
␈↓ ↓H␈β
␈¬α665␈↓ α`SLEW
␈↓ β⊂␈β
≡␈¬βCauses␈αthe␈αpaper␈αto␈αadvance␈α8.5␈αinches␈αfor␈αeach␈αcommand␈αgiven.␈αThe␈αmovement␈αof
␈↓ β⊂␈β
<␈¬βthe␈αpaper␈αresulting␈αfrom␈αone␈α
slew␈α
command␈α
is␈α
sufficient␈α
to␈α
bring␈α
the␈α
last␈α
line␈α
printed
␈↓ β⊂␈β
Z␈¬βinto␈α
view.
␈↓ β⊂␈β⊗␈¬βThe␈α⊂following␈α⊂commands␈α⊂are␈α⊂valid␈α⊂when␈α⊂in␈α⊂character␈α∂mode␈α∂(MUX␈α∂sub-mode␈α∂or
␈↓ β⊂␈β4␈¬βnot).
␈↓ ↓H␈βp␈¬α000␈↓ α`NO-OP
␈↓ ↓H␈β∞␈¬α014␈↓ α`NO-OP (if not using fan-fold paper)
␈↓ ↓H␈β,␈¬α015␈↓ α`NO-OP␈↓ βx<carrage return>
␈↓ ↓H␈βJ␈¬α200␈↓ α`NO-OP
␈↓ ↓H␈βh␈¬α214␈↓ α`NO-OP (if not using fan-fold paper)
␈↓ ↓H␈β
ε␈¬α215␈↓ α`NO-OP
␈↓ β⊂␈β
$␈¬βThese␈α
commands␈α
do␈α
nothing␈α
and␈α
continue␈α
immediately.
␈↓ ↓H␈β
`␈¬α012␈↓ α`LINE FEED
␈↓ ↓H␈β
}␈¬α212␈↓ α`LINE FEED
␈↓ β⊂␈β∞≤␈¬βCauses␈αthe␈αcurrent␈αbuffered␈αline␈αof␈αcharacters␈αto␈αbe␈αplotted␈αand␈αthe␈αpaper␈αadvances
␈↓ β⊂␈β∞:␈¬βone␈α
character␈α
line␈α
space.␈α
If␈α
in␈α
character␈α
MUX␈α
mode,␈α
the␈α
next␈α
command␈α
must␈α
be␈αa
␈↓ β⊂␈β∞X␈¬βRASTER␈α
select.
␈↓ β⊂␈β↓H␈¬↓Character Generator in MUX mode
␈↓ ↓H␈β↓f␈¬βIf␈αit␈αis␈αdesired␈αto␈αoverlay␈αcharacter␈αgenerator␈αsymbols␈αwith␈αgraphics,␈αthe␈αfollowing␈αproceedure␈αmust
␈↓ ↓H␈βα∧␈¬βbe␈α
followed.␈α
First␈α
issue␈α
the␈α
command␈α
SELECT␈α
CHARACTER␈α
GENERATOR␈αIN␈αMUX␈αMODE
␈↓ ↓H␈βα"␈¬β(560)␈α⊂and␈α⊂send␈α⊂a␈α⊂full␈α⊂line␈α⊂of␈α⊂characters␈α⊂including␈α∂a␈α∂<line-feed>␈α∂(012)␈α∂at␈α∂the␈α∂end.␈α∂At␈α∂this␈α∂point,
␈↓ ↓H␈βα@␈¬βRASTER␈α∞mode␈α∞must␈α∞be␈α∞selected,␈α∞either␈α
stantard␈α
(740)␈α
or␈α
AUTOSTEP␈α
(644)␈α
mode.␈α
All␈α
data␈α
now
␈↓ ↓H␈βα↑␈¬βpresented␈α
to␈α
the␈α
plotter␈α
will␈α
be␈α
graphics␈α
"OR"ed␈αwith␈αthe␈αpreviously␈αsupplied␈αcharacters.␈αThe␈αuser
␈↓ ↓H␈βα|␈¬βmust␈αensure␈αthat␈αenough␈αraster␈αdata␈αis␈αinput␈αto␈αthe␈αStatos␈αto␈αcover␈αthe␈αarea␈αin␈αwhich␈αthe␈αcharacters
␈↓ ↓H␈ββ~␈¬βare␈α∞to␈α∞be␈α∞printed.␈α∞The␈α∞plotting␈α∞rate␈α∞of␈α∞the␈α∞Statos␈α∞slows␈α∞down␈α∞during␈α∞the␈α∞actual␈α∞time␈α∞that␈α∞data␈α
is
␈↓ ↓H␈ββ8␈¬βbeing␈α
multiplexed␈α
because␈α
of␈α
the␈α
overhead␈α
required␈α
to␈α
manipulate␈α
the␈α
data␈α
from␈α
two␈α
sources.
␈↓ ¬
␈β↓H␈¬↓CHARACTER GENERATOR
␈↓ ↓H␈βα∧␈¬βThe␈α∂Character␈α∂generator␈α∂model␈α∂number␈α∂146␈α∂has␈α∂the␈α∂following␈α∂character␈α∂set.␈α∂The␈α∂200␈α∂bit␈α∂in␈α∂the
␈↓ ↓H␈βα"␈¬βcharacter␈α
code␈α
is␈α
ignored.
␈↓ ↓H␈βα↑␈¬αCODE␈↓ α`CHARACTER
␈↓ ↓H␈βα|␈¬α000␈↓ α`<no-op>␈↓ π@020 ∞
␈↓ ↓H␈ββ~␈¬α001␈↓ α`<paragraph mark>␈↓ π@021 <triangle>
␈↓ ↓H␈ββ8␈¬α002␈↓ α`<degrees>␈↓ π@022␈↓ λX<box>
␈↓ ↓H␈ββV␈¬α003␈↓ α`<squiggle>␈↓ π@023 <box>
␈↓ ↓H␈ββt␈¬α004␈↓ α`<pounds sterling>␈↓ π@024 ∧
␈↓ ↓H␈β∧∩␈¬α005␈↓ α`<cents>␈↓ π@025 <copyright>
␈↓ ↓H␈β∧0␈¬α006␈↓ α`<shourt dash>␈↓ π@026 1/4
␈↓ ↓H␈β∧N␈¬α007␈↓ α`<times>␈↓ π@027 3/4
␈↓ ↓H␈β∧l␈¬α010␈↓ α`1/3␈↓ π@030 <sigma>
␈↓ ↓H␈β¬
␈¬α011␈↓ α`≥␈↓ π@031 ≤
␈↓ ↓H␈β¬(␈¬α012␈↓ α`<line-feed>␈↓ π@032 <divide>
␈↓ ↓H␈β¬F␈¬α013␈↓ α`<dagger>␈↓ π@033 <double dagger>
␈↓ ↓H␈β¬d␈¬α014␈↓ α`<form-feed>␈↓ π@034 <epsilon (cap)>
␈↓ ↓H␈βεα␈¬α015␈↓ α`<no-op>␈↓ π@035 →
␈↓ ↓H␈βε ␈¬α016␈↓ α`←␈↓ π@036 ↓
␈↓ ↓H␈βε>␈¬α017␈↓ α`2/3␈↓ π@037 <registered trademark
␈↓ ↓H␈βεz␈¬βAll␈α∂other␈α∂characters␈α∂conform␈α∂strictly␈α∂to␈α∂USASCII,␈α∂including␈α∂137␈α∂for␈α∂"_",␈α∂76␈α∞for␈α∞"~",␈α∞and␈α∞177␈α∞for
␈↓ ↓H␈βπ_␈¬β<block>.