why dont hav use XBYTE

sir, Because i have using the XBYTE for particular memory location. But in this program data transfer only through accumulator register. I want data store by using particular memory location.so...
why dont hav use XBYTE

sir, Because i have using the XBYTE for particular memory location. But in this program data transfer only through accumulator register. I want data store by using particular memory location.so...
L51 V7.50 incompatible with V8.0? L218

I have a library from another vendor that I am trying to link my code to. They generated the library with the PK51 V8.0 tools (I'm not exactly sure which version 8). but I get the following error when...
L51 V7.50 incompatible with V8.0? L218

I have a library from another vendor that I am trying to link my code to. They generated the library with the PK51 V8.0 tools (I'm not exactly sure which version 8). but I get the following error when...
Why the KEIL C51 8.18 generate fault result?

I use a temp reg to store the data of ADDH reg of my adc. but when i read it after it's convertion finished,the data read into temp is not equ the data in ADDH reg(the address of the ADDH reg is 0xAC...