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hi to all i am trying to interface Parallel Printer. i used only STROBE and BUSY command line and all data line for interface to EPSON LX-300 and EPSON LX-300+II. the when i connect EPSON LX-300 it works fine and print each and every thing which i feed to it through microcontroller(P89V51RD2BN) but not working properly for EPSON LX-300+II. i.e. with EPSON LX-300 Printer output is KEIL FOR 8051 with EPSON LX-300+II Printer output is K IL OR 8 51 or it omit some different alphabit
can tell me why this happenning.
Just try to slow down your code and see if it starts to work. If so, then slow it down yet a bit more to have a bit of safety margin.
or look at the interface control signals to make sure that they are behaving as you expected...