can you use local XDATA variables

I'm working Renesas at this time and can't test myself. someone asked me a Keil ''51 question I can't nswer: "can you use xdata for local variables. I guess the answer is no, (the call tree) if...
can you use local XDATA variables

I'm working Renesas at this time and can't test myself. someone asked me a Keil ''51 question I can't nswer: "can you use xdata for local variables. I guess the answer is no, (the call tree) if...
stack waste for local variables in case of optimization level 2

Hello, i am wondering about stack usage with optimization Level 2. Thread job2 uses 264 Bytes on stack. Obviously much more than required. Using optimization Level 0, stack usage is only 168 Bytes...
stack waste for local variables in case of optimization level 2

Hello, i am wondering about stack usage with optimization Level 2. Thread job2 uses 264 Bytes on stack. Obviously much more than required. Using optimization Level 0, stack usage is only 168 Bytes...
I can't read the SBUF. The local variable don't receive the value of the SBUF. Thank you very much f

void getSBUF() interrupt 4 using 1 { char temp = 1; temp = SBUF; RI = 0; }