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- /NOF
- July 22, 1986
- Number 141
-
- Btrieve/N Conflict with Advanced NetWare V2.0a on Proteon
- networks.
-
- The software application "Btrieve/N" by SoftCraft has an interrupt
- conflict with Advanced NetWare V2.0a running on Proteon Networks.
- The conflict prevents Btrieve/N from running. The Advanced
- NetWare V2.0a shells (ANET2.COM and ANET3.COM) for Proteon use
- software interrupt 7Bh to communicate with the Proteon boards.
- Btrieve/N also uses interrupt 7Bh. Btrieve/N is a file management
- application usually used by other applications to handle record
- locking and file management.
-
- The shell board drivers may be patched to allow NetWare to use
- another interrupt, thus allowing Btrieve/N to function correctly.
- However, if the drivers are patched there is no guarantee that the
- new interrupt will not conflict with some other software package.
-
- What the patch will do is replace all calls the shell makes to 7Bh
- with the new interrupt. The patch will also insert the address of
- the NetWare 7Bh interrupt handler into the interrupt (vector) table
- of the new interrupt. After performing the patch new shells should
- be generated with the GENSH utility.
-
- The patch procedure is as follows:
-
- Insert Diskette Gensh - 1 which contains the file
- CPROSHDR.OBJ into drive A: (you may wish to backup the
- diskette before proceeding.)
-
- Use the DOS Utility DEBUG.EXE to modify the file. The
- example below modifies the interrupt to 7Dh. To use an
- interrupt other than 7Dh replace any reference to 7D with the
- desired interrupt. What you type will be in bold text. What
- appears on the screen will be in normal text. Comments will be
- in Italics.
-
- >DEBUG A:\CPRONET\SHELLDRV.OBJ 1)Load the driver
- file with debug
- -E 47E 2)Edit location 47Eh
- 2362:047E 7B.7D 2a)Replace 7Bh with the
- new interrupt
- -E 4C7 3)Edit location 4C7h
- 2362:04C7 7B.7D 3a)Replace 7Bh with the
- new interrupt
- -E 4F5 4)Edit location 4F5h
- 2362:04F5 7B.7D 4a) Replace 7Bh with
- the new interrupt
- 5)Calculate the new
- interrupt address for
- the vector table.
- -H 7D 7D 5a)Add the new
- interrupt to itself
- 00FA 0000 The first four digits
- are the answer
- -H 00FA 000FA 5b)Add the answer to
- itself. This effectively
- gives 4 times the
- interrupt value.
- 01F4 0000 The value we want is
- the 3rd and 4th digits.
- -E AA9 6)Edit location AA9h
- 2362:0AA9 EC.F4 6a)Insert the value
- obtained in step
- 5b above
- -H F4 2 7)Add 2 to the value
- obtained in step 5b
- above
- 00F6 00F2 The answer is the
- 3rd and 4th digits.
- -E AB0 8)Edit location AB0h
- 2362:0AB0 EE.F6 8a)Insert the value
- obtained in step 7
- above
- -W 9) Write out the
- changes to the floppy
- Writing 0B4C bytes
- -Q 10)Quit the DEBUG
- program.
-
- You can now generate your shells as you normally would with the
- GENSH utility.
-
- As stated above other programs may have a conflict with any
- interrupts you use to replace 7Bh with. Novell is not currently
- aware of any conflicts with 7D. If interrupt 63 or 64 is used the
- only program that we are aware of having a conflict with these
- interrupts is Display Write 3 by IBM. Thus if you do not use Display
- Write 3 you should be able to safely use either of these interrupts.
- /FOR