Note: This API calls are shared between DOS and Win16 personality.
DOSSHELL is a stripped down version of 16-bit Windows. Some APIs shared and same. DOSSHELL uses older version of API, but Win16 has more advanced APIs.
Int 2FH, AX=4A05H, SI=02H
Version
?
Brief
Switch to previous task in Z order list
Input
None
Return
CF is reset - ok CF is set - error. Only one task in list
Notes
Function switches Z order list so previus task in list become first, current become become second and so on.