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- Feb 13/85
-
- LD has been corrected to comply with an undocumented feature
- in CP/M (all versions from 2.2 to Concurrent DOS). There are several
- programs around that use the MFNAME or MFACCESS subroutines written
- for the MODEM7 series to implement Batch file transfers. It goes like
- this:
- In none of the official Programmer's Guides for any version of
- CP/M does it say that an FCB is required for Search Next (function 18).
- However, if the FCB passed to Search First contains an unambiguous
- file reference (i.e. no question marks), then the Search Next function
- requires an FCB passed in reg DE (for CP/M-80) or DX (for CP/M-86).
- The MFNAME and MFACCESS routines use this undocumented feature to
- open and use files between search requests without the need to build
- a table of valid filenames before using them.
-
- The following programs may not work properly in previous
- releases of LD and LBRDISK:
-
- MODEM7 in batch file mode (all versions)
- CRCK
-
- Jim Lopushinsky