**********************************

* STRCAT: append 2 null terminated strings
*         User must ensure there is room in buffer!!!

* OTHER MODULES NEEDED: STRCPY, STRLEN

* ENTRY: X=start of string to move
*        Y=start of string to append to

* EXIT: all regs preserved (except cc)


 nam Append 2 null terminated strings
 ttl Assembler Library Module


 section .text

STRCAT:
 pshs d,x,y
 exg x,y
 lbsr STRLEN find end of appended string
 leax d,x point to end of "buffer"
 exg x,y
 lbsr STRCPY copy string
 puls d,x,y,pc

 endsect