WinLpt (WndLpt)

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TEST

Directive. Test state of input/output/pin space of LPT port.

Syntax

test <i/o space> <address>
test <i | q | pin> <address>
test i <address>    ; Test specified input signal
test q <address>    ; Test specified output signal
test pin <address>  ; Test specified pin of LPT port

Parameters

i/o space
  • i — INPUT space
  • q — OUTPUT space
  • pin — The PIN space
address
  • Index number of specified signal or pin

Remarks

The INPUT space
Address LPT pin
i 1 10
i 2 11
i 3 12
i 4 13
i 5 15
The OUTPUT space
Address LPT pin                 Address LPT pin
q 1 2   q 7 8
q 2 3   q 8 9
q 3 4   q 9 1
q 4 5   q 10 14
q 5 6   q 11 16
q 6 7   q 12 17
The PIN space
Address LPT pin
pin 1 1
pin 2 2
pin 3 3
. . . ...
pin 24 24
pin 25 25

Example file test_i.txt

10          ; Set initial state

CYCLE:      ; Define the label CYCLE

test i 1    ; Test input bit 379h:6 (Pin 10)
jz SIGNALED ; Jump if tested bit in zero state

shift +1    ; Rotate state clockwise
goto CYCLE  ; Goto the CYCLE label

SIGNALED:
shift -1    ; Rotate state unclockwise
goto CYCLE  ; Goto the CYCLE label