ucos51.txt

很好的一个可以在8051上可以运行的ucos

Off course I disclaim every claim that extends from using this port.
Any use is a decision made by yourself and as such concequences are for you as well.
This software shall not be distributed since it is written by myself in unpayd 
hours and I want to keep track where it goes. 
;********************************************************************************************************
;                                                 uC/OS
;                                          The Real-Time Kernel
;
;                                   8052 SPECIFIC ASSEMBLY LANGUAGE CODE
;
;                                             Rene Voorberg
;                                           80c52 (Large Model)
;				   Using the COMPASS51 compiler from PLC
;
; File : UCOS51.txt
;********************************************************************************************************
Ucos is now also suited for the 80c52. The 8051 can not be used because of
memory requirements for the internal stack.
this code was optimized to run as fast as possible using the Compass 51 
compiler from PLC in Texas USA

To use it with other compilers you must make sure that the compiler does not 
use register passing for the specific UCOS51 files and that you must change 
the code for the stackpointer in xram. I can help of course

I have written or adapted some programs to run on a board for testing.
Boards suited are the intel dev. kits. and others.

Remember that the compiler must be set to large mode.

The code is adapted to the 80c52 for use in several products and appears to
run seamlessly. Thanks to Jean for his nice UCOS.

Compliments,Remarks,Suggestions and Ideas:
Rene Voorberg
[e-mail]


;Conventions:
;opt 	:optimized code but it shows you what's happening
;P3.5	:break bit which is used by the Intel Rism Drivers or ROM monitors from 
;PLC to signal a breakpoint. If we are stepping or a breakpoint is hit
;no interrupts should be honoured no more beside the serial interrupt for 
;your debugger.
;_sp	:the (integer) xstackpointer used by the Compass 51 compiler
;_fp	:the (integer) framepointer used by the Compass 51 compiler
;OSTCBCur:
;	Pointer to the current's process OSTCB
;OSTCBHighRdy:
;	Pointer to the process OSTCB with the highest priority which is ready to run