Nomenclature And Functions - Sharp CE-159 Service Manual

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4. NOMENCLATURE AND FUNCTIONS
4, Terrninal cover
'2. CExclusivc Resdovt Area>
S.Ct swi
ccti
1. Space cover
3 . Capacity set $witch
2. (Exclusive Readout Areal Set Switch
l·IID I
With the si.vitch posit ioned at the mark • . the me mo(y capacity desig·
nated by t he Capacity Set Switch
can
be set as an exclusive readou t
area.
With the switch positioned opposi te the mark •, the exclusive readout
area is reset, making the CE·
159
memory operable as RAM.
3. Capacity Set Switch
Numbers rcpre·
scnting the ca·
pacitv
a:e
ind•·
cated on thP.
This switch designates the capacity for u se as on exclusive readout area.
Setting the switch at positions
8, 6 and 4 designates 8 K bytes, 6 K
bytes and 4 K bytes. respectively. With the Set Switch positioned at
the
•mr::J.
the designated capacity becomes an exclusive readou t
area. T his switch may be in any posit ion when t he CE-159 is not used
to d esignate a r'I exc lusive readout area.
4 . Terminal Cover
This cover p rotects the CE·
159
terminal when th e CE·
159
is not connected to t he PC·
1500. When connected. this te(minal cove( is housed inside the CE· 159.
IRAM Area and Exclusive Readouit Area
' T he RAM area and exc lusive
readout
a rea arc
illustrated as
follows:
©
Used as only
RAM area
~
8 K by tes
u~d
M e.xclo·
sivc
readout
area
CE·t59
18 K bvtesl
PC·t500 \
(2 K bytes)
+
····· ·· ········· BASIC
program
· · " · · · · · · · · · · ·· 2 character
variables
pimensio"'3
··· ···· ········· variablts
~---~
+
G>
6 K bytes
used as exclu·
sive readout
area
.·
......
··
2
Do not sale this PDF !!!
@
4 K
bytes
u sed
3$
el<clu·
sive roodout
area
Exclu sivt
readout
area
RAM
area