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CCS/TMS320C5517: DSP algebraic assembly code

Part Number: TMS320C5517

Tool/software: Code Composer Studio

I am in the process of converting a project from TMS320C5502 to TMS320C5517. The original project was compiled using CCS version 2.1 over 15 years ago.  I am trying to import this old project into CCS 9.1.  I determined that I needed the C5500 compiler and installed this app into CCS.  

I have algebraic assembly code that is giving me errors when I compile/assemble.

push(st1)    

sxm=1

ovm = 0

frct=1

st1=pop() 

dreturn

I have resolved some of the issues because I noticed some of the special function registers have been renamed and fixed those errors easy enough. 

I tried renaming st1 to ST1_55 but that did not help.  I have also tried renaming ovm to SATD without any luck either. 

Last but not least, I could not find an equivalent command to dreturn.  Maybe there are a few commands that could replace this one command?

If you can please let me know where I can find a complete list of all the registers and bits as they are defined for the assembler that would really help!