srchstr: Rw, Rx | start, Ry,  Rz | "findstr"

Search string Ry for substring Rz starting at Rx and load position into Rw. If the substring Rz is not found, Rw will contain zero. See srchstr.ata for an example on useage.


Rw: A numeric register that contains the position of substring Rz or 0 (zero) if not found.
Rx | start: A numeric register or constant. Sets the start position in Ry to search from.
Ry: A string register containing the string to search.
Rz | "findstr": A string register or constant of the substring to find.