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, , , , . . , , - , , , . , .

() "" , , , . IBM- () MS DOS Windows. , , . , ( 80286) .

.1. LPT . , . 378h. , 0 255, LPT .

   .
.1.

LPT , . STROBE, 37h. - .

- , . - 8-, 16-, 32-, 64- 128-, . , 32x8 (256 ).

. 2. , , U1.1 1U1- 8111 (U2.1-U5.2). LPT XS1 , 1U1 - 8U1 1VT1-8VT1. , , 1R3-8R3 .

   .
.2. ( )

Strobe LPT . U 1.1 VT1, DD1. DD2 DD3.1 DD4 DD5 , , VT2-VT33. : . Strobe . .

, .

, , TurboBASIC. LPT1 378h, Strobe 37h.

'   -
'
out &h378,1: delay .3
out &h378,2: delay .3
out &h378,4: delay .3
out &h378,8: delay .3
out &h378,16: delay .3
out &h378,32: delay .3
out &h378,64: delay .3
out &h378,128: delay .3
out &h378,0: delay .3
end
' -
'
for i=1 to 10
for j=0 to 7
out &h378,2^j
delay .05
next j
next i
end
'
'
for i=0 to 255
out &h378,i
delay .028
next
end
' " "
fore=0 to 31
out &h378,255
out &h37A,0: for q=0 to 3100: next q
out &h37A,1: for w=0 to 3100: next w
next e
end
' " "
for i=1 to 10
for j=0 to 7
out &h37A,0: out &h378,2Aj
for k=0 to 80: next k
out &h37A,1: for 1=0 to 80: next 1
next j
next i
end
'
fore=0 to 3100
out &h378,255: for r=0 to 10: next r
out &h37A,0: for q=0 to 1: next q
out &h37A, 1: for w=0 to 10: next w
next e
out &h378,0
end


250x110 (. 3). , , , . 2-6 DD1, DD2 DD4, DD5. .

   .
.3.

80286 ( ). 5 0,5 . 1R3-8R3, 20 , .

8 128, 64 1024. , , , 64 . ( - ). .

: ., . ; : radioradar.net

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