Hi,
I am using C8051F120 from Silabs.., I have connected PPI 8255 with my controller which is be addressed as External Memory interface(EMI) as I take control lines of PPI A0,A1 with lower ports of Microcontroller..
I am finding problem with interfacing using XBYTE to address externaly..,
Ex:
XBYTE[0x0000]=0xFF;
where the control lines of PPI A0,A1 r selected with address XBYTE[0x0000] and data is latched with 0xFF;
this operation is not performed properly..,
If there is any solution to this problem.. plz let me know...
Rajesh
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