xdata access, how ?

Dear sir, i am is a student in physic department,i use uVision IDE for 8051 ver 6.20c, build a single board computer, with core is AT89S52,one Dallas RTC 12C887,and an 8255 PPI, both (RTC & PPI) connected...
xdata access, how ?

Dear sir, i am is a student in physic department,i use uVision IDE for 8051 ver 6.20c, build a single board computer, with core is AT89S52,one Dallas RTC 12C887,and an 8255 PPI, both (RTC & PPI) connected...
xdata access by #define

I have to read a flash written by another program and am provided a file looking like this // data locations #define data1 0 #define data2 data1+0x100 ... I would like to use the file 'as is" but...
xdata access by #define

I have to read a flash written by another program and am provided a file looking like this // data locations #define data1 0 #define data2 data1+0x100 ... I would like to use the file 'as is" but...
XDATA variables

I have the following variable declaration: float xdata voltage _at_ 0x08E2; When I assign a value and try to print if I always get 0.0: voltage = 25.5; printf( "Volatage: %#5.2f", voltage...