SVC 22 (0A16)
OPEN (TYPE=J) macro - is type 4, gets LOCAL lock.
Calls module IGC0002B.
GTF data is:
- R15 and R0
- No applicable data.
- R1
- Address of the parameter list.
- PLIST
- Four to 40 bytes of the OPEN parameter list, which has a maximum
length of 1020 bytes. The list is a series of 4-byte entries in the
following format:
0 Option byte; bit settings are: Bits 1... .... Last entry indicator. .000 .... DISP. .011 .... LEAVE. .001 .... REREAD. .... 0000 INPUT. .... 1111 OUTPUT. .... 0100 UPDAT. .... 0111 OUTIN. .... 0011 INOUT. .... 0001 RDBACK. .... 1110 EXTEND. .... 0110 OUTINX. 1-3 DCB address.