...
Notes
Setting A3=0 and A4=0 will mean that the PANEL settings for the date format will be used. A3=A4=1 will use European format. The routine will return a syntax error (RC_SNTX) if A5=1 and the character passed in C(in) is not the terminator of the string to be converted. Please note that returned internal format is in high byte low byte register sequense (A = high byte, C = low byte).
Source in HL can not be in segment 1 used by Date Filter Table. Destination in (DE>255) can be inside segment 1.
Related calls
GN_Dei, convert zoned format date to internal format
GN_Die, convert internal format date to zoned format
GN_Gmd, Get (read) machine date in internal format
GN_Pdt, write internal date as ASCII string
GN_Pmd, put (set) machine date