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Hexadecimal dump
This feature is usefulfor programmerswho are debuggingprintingpro-
grams and want to see the actual codes the printer is receiving.(Some
computemchangethe codesthe programmerintended.)
Inthismode,alldatareceivedwillbeprintedinahexadecimaldumpformat,
ratherthanthecontrolcodesbeingactedon as commandcodes.
Thismodeis accessedwiththe followingprocedure:
1. Whileholdingboth
the(PAPER FEED)and(
SEJAE~~CT
)buttons down,
turnpowerON.A beeptonewillbeheard.
2. Beginprinting.In placeof the usualprintoutyouwill get a formatted
dumpshowingexactlywhatdatatheprinterreceives.Eachlinepresents
sixteencharacters,theirhexadecimalcodestotheleftandprintablechar-
actersprintedon the right.
3. At the end of the hexadecimaldump,set the printer off-line with the
(
ON
LINE
)
button.Thisis necessaryto printthelastline.
ThefollowingBASICprogramis a simpletest youcanrunin hexadecimal
mode:
10 LPRINT WIDTH “LPT1 : “ .255
20 FOR 1=0 TO 255
30 LPRINT CHR$(I) ;
40 NEXT I
50 LPRINT
60 END
If your systempasses the codes directlyto the printer withoutchanging
them,you will get a printoutlikeFigure2-5.
00 01 02 03 04 05 06 07
08 09 OA 06 OC OD OE OF
. . . . . . . . . . . . . . . .
10 11 12 13 14 15 16 17
18 19 1A 16 IC ID 1E 1F
20 21 22 23 24 25 26 27
28 29 2A 2B 2C 2D 2E 2F
! “#$%&: i ) ~+ ; -. /
30 31 32 33 34 35 36 37
38 39 3A 3B 3C 3D 3E 3F
0123456789 : ; <=>?
40 41 42 43 44 45 46 47
48 49 4A 46, 4C 4D 4E 4F
@ABCDE FGH I JKLMNO
50 51 52 53 54 55 56 57
58 59 5A 56 5C 50 5E SF
PQRSTUVWXYZ [\] ‘-
60 61 62 63 64 65 66 67
68 69 6A 66 6C 6D 6E 6F
‘ abcdefghi jkl mno
70 71 72 73 74 75 76 77
78 79 7A 7B 7C 70 7E 7F
pqrstuvwxyz ( !) -.
60 81 82 83 84 85 86 87
88 89 8A 8B 8C 8D 8E 8F
. .
90 91 92 93 94 95 96 97
98 99 9A 9B 9C 90 9E 9F . . . . . . . . . .
AO Al AZ A3 A4 A5 A6 A7
A8 A9 AA AB AC AO AE AF
.
BO 81 R2 63 64 B5 B6 B7
B8 B9 6A t3B BC BD 8E BF . . . . . . . . . . . .
CO Cl C2 C3 C4 C5 C6 C7
C8 C9 CA CB CC CO CE CF . . . . . . . . . . . . .
DO D1 D2 03 04 05 D6 D7
D8 D9 DA OB DC DD DE DF . . . . . . . . . . . . . . . .
EO El E2 E3 E4 E5 E6 E7
E8 E9 EA EB EC EO EE EF . . . . . . . . . . . . . .
FO F1 F2 F3 F4 F5 F6 F7
F8 F9 FA FB FC FD FE FF . . . . . . .
OD OA
Figure 2-5. Sample hexadecimal dump