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. , BIOS . , BIOS DATA AREA .

BIOS , , , - . (Loop Back) , , ( ) . BIOS . , .

BIOS, , - .

, . (12) (5) , . (. 1),

. 1. LPT- Checkit

 

LPT- . , (Checkit, PCCheck . .), - .

DOS ( LPTn PRN ), () , ( ) STROBES.

On Line, a (Not Ready Error), Busy.

, ( ) . , ( , Basic, ).

10 OPEN "bincod.chr" FOR OUTPUT AS #1

20 FORJ=2T015

30 FOR 1=0 15

40 PRINT#1, CHR$(16*J+I);

50 NEXT I 60 PRINT#1,

70 NEXTJ

80 CLOSE #1

90 END

BINCOD.CHR, , ( ), 16 . , . .

, , (SPP) , , IEEE 1284. 50-100 /, 1-2 /, , , 2 .

- , 17 DB-25 36 Centronics.

LPT- . , , . - (, NetWare) . , .





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