Hello everybody ..

I haven't been here for a long time . How are you all ? Last 5 months ,I' ve been on other CPU's world ,and ... well I didn't visit here.

OK ,enough for greeting :)

I just get on the 80c32 with uC/OS II with the medium h/w resource supply ,for 32 K rom and 32K external RAM.

Normally , The uC/OS II need LARGE memory model (Oh man I forgot to tell you that I ported it with Keil v6.10a compiler ) .
Everything seems right ,I ported it,compile and simulate on uVision. Until I download the code to my target . The error occur when I try to create a Task via OSTaskCreate( ); the return value is OS_PRIO_INVALID .
I checked again inside OS and it's seem that the OS use some xdata from area 0xf000-0xffff which I don't have enough memory to support.

The M51 file tell me that there's no reserve for such an area around that.
Right to the point , I have 2 question .


1. Is that heap memory ? The Priority variable is located there after I passed the priority value to OSTaskCreate( );.

2. I tried to locate all xdata within 32Kbytes by XDATA(0X0000-0X7FFF) but the code didn't implement on that as following.

;---- inside OS -------;
mov dptr,#0dH ;now dptr is 0x0d
lcall ?C?XBP0FF ;
movx a,@dptr ; now dptr is 0xffff
; and acc now is priority data
;-----------------------;

I don't have 0xFFFF. it would surely be 0xFF not my assigned priority and finally cause the error.

Is there any way to locate on 0x7FFF instead?