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Extended Mode Interface to SYSLIB
Table I–7 contains the possible values for the additional parameter field. Function codes
not listed in the table do not require an additional parameter value.
Table I–7. EM$INFOR Additional Parameter Field
Values
Code Description
2 The specification field in the format ftfuss, where:
ft field type
fn field number
ss subfield number
3 The subfield notation in the format ftfu, where:
ft field type
fn field number
4 The use name to attach to the file (1 to 12 Fieldata
characters in quotes)
EM$INFOR returns the status of the call to INFOR$ in the packet field CALLSTAT.
The CALLSTAT field is S3 of word 2 of the packet (packet address + 1). The possible
status is
0 Normal return from INFOR$
1 Error return from INFOR$, error code in field A1SAVE
2 Illegal value given for the INFOR$ function code
The contents of registers A0, A1, A2, and A3 from INFOR$ are returned in packet fields
A0SAVE, A1SAVE, A2SAVE, and A3SAVE, respectively. These fields are at words 3, 4,
5, and 6 of the packet.
Packet Generation:
The EM$INFORPKT PROC generates the packet for the Extended Mode interface to
INFOR$. This packet is required by the EM$INFOR PROC. EM$INFORPKT also
generates the externalized labels INFOR$, FILE$, and ELT$. The value of each label is
the offset from zero to the first word of the data entity.
Calling Sequence:
label EM$INFORPKT tbllen
where tbllen is the word length of the INFOR table; the minimum size is 28 words.
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