To 8255 as output control 8 monochrome LED lights. 8255 works in the way 0, at this time PA, PB, PC are independent of the input/output of the parallel port. 8255 corresponding to each register口address: PA I: 218H PB I: 219HPC I: 21AH control register: 21BH

Packet : 99273907lamp.rar filelist
lamp.txt

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