, , . , . -, . -, . -, . . - , :
- ;
- ;
- .
, , , , . . . Win32 API , .
, , LPT- (Standard Parallel Port, SPP), SPP-, , Centronics. Centronics.
Centronics:
-SROBE | O | ||
2 9 | DATA[1:8] | O | |
-ACK | ( ). | I | |
BUSY | I | ||
PE | I | ||
SLCT (Select) | (online/offline), | I | |
AutoF | O | ||
-ERROR | : , offline | I | |
-INIT | () | O | |
-SLCT IN | O |
, : -ERROR=1; PE=0; SLCT=1; -INIT=1; -SLCT IN=0.
BUSY. , , DATA STROBE. BUSY, . , , ACK, , , .
4.1 Centronics |