Quote:
Originally Posted by Timbucus
0x01 only to enable into 0x0822 - by the way when you do that PA7-PA4 end up as Outputs anyway ...
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I think I'd better read my (original, printed paper) 8154 datasheet again tomorrow. I thought that the DDR (Data Direction Register) for port A was at 0822 and writing '1' to a bit of the DDR made the corresponding port bit an output. Apologies if I turn out to have misread that.