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-
-
- MCOMM ASYNC LIBRARY NOTES
-
- This file contains information on configuring the libraries
- for use with your compiler and some Zortech C compiler specific
- notes. If your application may be ran on a system that uses a
- Western Digital 16550, be sure and read the notes on this chip
- in ASYNC.DOC. The file, UPDATE.DOC, contains important
- information regarding changes or additions to the library and
- header files. Be sure and read this file also. The area code
- for east Texas has been changed from 214 to 903 effective
- November 1, 1990. After May 1, 1991, the old area code will no
- longer work. The new numbers are:
-
- North East Texas Data Link (903) 838-6713
- Mike Dumdei (voice) (903) 838-8307
-
-
- LIBRARY AND HEADER FILE INFORMATION
-
- WHEN UPDATING, ALWAYS UPDATE THE HEADER FILES ALSO !!!
-
- The composite LIBs listed below contain all the functions des-
- cribed in ASYNC.DOC and SUPLMNT.DOC. As supplied on the disk
- the LIBs are setup for linking using Microsoft C or Quick C.
- If you use Turbo C you need to run the batch file, TCLIBS.BAT,
- to convert the LIBs to Turbo C format. If you use Zortech C,
- you will need to run ZTCLIBS.BAT.
-
- The conversion is necessary because a few of the non-async
- functions are written in C and call library functions that have
- different names in Microsoft C, Turbo C, and Zortech C. All
- the C code used is included in the shareware version so that if
- you are using a compiler, other than one of the above, that
- does use Microsoft calling sequences, you can recompile the
- code, update the composite LIBs, and still use the library.
-
- In addition, the following statements are contained in COMM.H,
- ANSIDRV.H, and EXTRA.H:
-
- #if !defined(MCOMM)
- #define _C_ cdecl
- #define _N_ near
- #define _F_ far
- #define MCOMM
- #endif
-
- These definitions are not totally up to date with MSC 6.0 and
- QC 2.5 (they have added a leading underscore for ANSI compat-
- ibility), however, they do still work with these compilers and
- they also work with Turbo C 2.0, Zortech C, and previous
- versions of Microsoft's compilers. If you are using a different
- compiler, you may need to change the 'cdecl', 'near', and 'far'
- keywords to the equivalent names used by your compiler.
-
-
-
-
- Only the small model version of the LIBs is included in the
- shareware version.
-
- COMPOSITE LIBS:
- COMM_S.LIB ;small model LIB of all routines
- COMM_C.LIB ;compact model LIB of all routines
- COMM_M.LIB ;medium model LIB of all routines
- COMM_L.LIB ;large model LIB of all routines
- COMM_H.LIB ;created by TCLIBS.BAT (only used by TC)
-
- CONVERSION LIBS: (used by TCLIBS.BAT, MSCLIBS.BAT, ZTCLIBS.BAT)
- TC_XS.LIB ;used to convert COMM_S to TC
- TC_XC.LIB ;used to convert COMM_C to TC
- TC_XM.LIB ;used to convert COMM_M to TC
- TC_XL.LIB ;used to convert COMM_L to TC
- TC_XH.LIB ;used to convert COMM_L to TC COMM_H
- MSC_XS.LIB ;used to convert COMM_S to MSC
- MSC_XC.LIB ;used to convert COMM_C to MSC
- MSC_XM.LIB ;used to convert COMM_M to MSC
- MSC_XL.LIB ;used to convert COMM_L to MSC
- ZTC_XS.LIB ;used to convert COMM_S to ZTC
- ZTC_XC.LIB ;used to convert COMM_C to ZTC
- ZTC_XM.LIB ;used to convert COMM_M to ZTC
- ZTC_XL.LIB ;used to convert COMM_L to ZTC
-
-
- Zortech C Specific Information:
-
- The Zortech C IO.H file and MCOMM COMM.H file have a name
- clash with the defined variable 'R_OK'. Zortech has it
- defined as 4 and MCOMM defines it as 0. The MCOMM
- documentation makes references to a return value of R_OK so
- rather than define it out in COMM.H, I left it in. I
- thought it was better for you to get a compiler error that
- you could find than defining out R_OK if __ZTC__ was defined
- and you not knowing what was wrong when a function that was
- supposed to return R_OK didn't (since R_OK was 4 instead of
- 0). The solution is to define it out of COMM.H if __ZTC__
- is defined and then everywhere an MCOMM function is supposed
- to return R_OK, look for a return value of 0.
-
- Control-break locks up the SMALTERM demo programs. I think
- the problem is: Zortech C control-break causes you to exit
- to DOS where MSC and TC do not as long as only the BIOS key
- functions are used. When SMALTERM exits to DOS with the
- interrupts still hooked, the demo crashes. This only applies
- to Zortech C/C++. I tried using the signal functions to fix
- it but didn't get it. If you are an experienced Zortech
- user and want to tell me how to make Zortech C run the exit
- term function when control-break is pressed before it exits
- to DOS, I will correct it for the next version.
-
-