Sharp PC-1500 Technical Reference Manual page 155

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1. Determining printing character size and
direction
• Specifying printing character size
Print ctrnracter siLe ( 1 ~9) must be stored in the character size memory
(79F4H).
• Specifying print ing direction
Print direct ion (0 ~·3) must be stored in the print direction memory (79F2H).
2. Restoration of array and two-character variable
• 1 \rray variable and two-<:haracter variable that cleared by means of RU N operation or
CLE/\R
command can be restored
by
operating the variable pointer (7899H . 789/\H).
r\ u1nbcr of byt es dorninatcd by the a rray variable and
t\vo~h aracte r
variable should be
deducted fron1 the last address of the free area, then store it in the variable po inter.
• How 10 store
1\ssu n1e no\v "x" is the-nu rnbcr t hat t he byte count of a rray and t\vo-charactcr variable
deducted
fron1
the last addrc.ss of the free area.
{l
=
x
/ 256
h
=
x - 256 *a
Where.
a: I ligh order t\VO digits ' vhen .~: is d isplayed in hcxadccin1al figure.
h:
l .O\V
order
t\VO d ig its \Vhc n ,,- is
displayed
in hcx;1 d.:cin1al
figure.
Whereas. store" in the variable pointer
7899H
and
h
in 789AH.
• Last address of
t he
free area
Syslcm configuration
Address
PC-1500 only
4800H
PC-1 500
+
CE-1 5 t
SOOOH
PC- t 500
+
GE- 155 6000H
PC- 1500
+
C E-t 59
I
4800H
• Nurnbcr
of
bytes
used for
the
al'ray a nd
t\vo-charactcr variable
Nun1eric
arr< ty
,·a riab1l!:
7 bytes
+
8 bytes * size of array
Nonnlllllcric a
rrtL Y variable:
7 bytes
+
c ha racter
lengc h * size of array
(Character size is norrn a lly 16
ch;tractcrs.)
N un1cric t\VO<hara cte r varia b le:
7 bytes
+
8 bytes
Character t\vo-character variable:
7 bytes
+
I 6 bytes
3. Knowing the use of CE-150
150
Because the system program ROM of the
CE-I
50 resides in the
CE-I
50. FFH will b-c read
when a MEO address range of AO-OOH thl'u BFFFH is accessed with the
CE- 150
not
connected to the
PC- 1500.
If connected . the contents of
i\!H l()H
will fetch
CO H .
NOTE: PV
must be rese t.
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