Epson LX-90 User Manual - Apple IIc 8699 PIC for LX-90 - Page 109

Print Chr$4;pr#1, For X=70 To, Print Chr$x: Next X, Print Chr$27;e, Print Sample Text, 0d, And 0a

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code is for a printable character, that character is printed. If the code is for a non-printable character, such as the ESCape code or the code for a line feed or carriage return, a dot is printed. Therefore, if you ran the following BASIC program while your LX-90 was in the data dump mode, you would get the printout below it. The printer will print all but the last line and then stop. Press the ON LINE button to make the printer print the last line. 5 PRINT CHR$(4);"PR#1" 10 FOR X=70 TO 73 29 PRINT CHR$(X): NEXT X 30 PRINT CHR$(27);"E" 40 PRINT "Sample text" 50 PRINT CHR$(27);"@" 300 PRINT CHR$(4);"PR#0" Data Dump Mode 0000 46 OD OA 47 OD OA 48 OD OA 49 OD OA 1B 45 OD OA F..G..H..I...E.. 0001 53 61 6D 70 6C 65 20 74 65 78 74 OD OA 1B 40 OD Sample text... @. 0002 OA You can consult Appendix A to see the meaning of the hexadecimal codes. The explanation below of the first line will put you on the right track for using the data dump mode. The first code in line 0000 is hex 46, which is the same as decimal 70, which is the code for "F"; therefore "F" is printed in the first position in the guide section. Then, because there is no semicolon in line 20, BASIC sends a carriage return and a line feed, hex codes OD and OA. Each of these is represented by a dot in the guide section. The program then sends the hex codes 47, 48, and 49, with each followed by a carriage return and line feed. When the program gets to line 30, it sends ESCape "E" and a carriage return and line feed. These are hex codes 1B, 45, 0D, and 0A, which are represented in the guide section by a dot, an E, and two more dots. Now you can follow a data dump printout on your own. Some software changes one or more codes when sending them to the printer. The ability of the LX-90 to dump in hexadecimal lets you determine which codes are creating problems for your system. E-8

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code is for a printable character, that character is printed. If the code is
for a non-printable character, such as the ESCape code or the code for
a line feed or carriage return, a dot is printed.
Therefore, if you ran the following BASIC program while your
LX-90 was in the data dump mode, you would get the printout below
it. The printer will print all but the last line and then stop. Press the
ON LINE button to make the printer print the last line.
5
PRINT CHR$(4);"PR#1"
10 FOR X=70 TO
73
29 PRINT CHR$(X): NEXT X
30
PRINT CHR$(27);"E"
40 PRINT "Sample text"
50
PRINT CHR$(27);"@"
300 PRINT CHR$(4);"PR#0"
Data Dump Mode
0000 46 OD OA 47 OD OA 48 OD OA 49 OD OA 1B 45 OD OA
F..G..H..I...E..
0001 53 61 6D 70 6C 65 20 74 65 78 74 OD OA 1B 40 OD
Sample text... @.
0002 OA
You can consult Appendix A to see the meaning of the hexadecimal
codes. The explanation below of the first line will put you on the right
track for using the data dump mode.
The first code in line 0000 is hex 46, which is the same as decimal 70,
which is the code for "F”; therefore “F” is printed in the first position in
the guide section. Then, because there is no semicolon in line 20,
BASIC sends a carriage return and a line feed, hex codes OD and OA.
Each of these is represented by a dot in the guide section. The program
then sends the hex codes 47, 48, and 49, with each followed by a
carriage return and line feed.
When the program gets to line 30, it sends ESCape “E” and a car-
riage return and line feed. These are hex codes
1B,
45, 0D, and 0A,
which are represented in the guide section by a dot, an E, and two
more dots. Now you can follow a data dump printout on your own.
Some software changes one or more codes when sending them to
the printer. The ability of the LX-90 to dump in hexadecimal lets you
determine which codes are creating problems for your system.
E-8