Number 172
January 26, 1987

Title: Patch for DOS 3.2 XCOPY to run on NetWare.

The XCOPY.EXE file available with DOS 3.2 sometimes fails to copy network
files and prints garbage characters on the screen.  The patch process
described below will fix the problem.  If you make a mistake, simply start
the proceedure again.

1.Copy XCOPY.EXE onto a diskette and rename it to XCOPY.NEW.

2.Place your DOS utility diskette containing DEBUG.COM in drive A and the
  diskette containing the XCOPY.NEW file in drive B, type the following
  command line, and press the Enter key:

A:DEBUG B:XCOPY.NEW

3.The DEBUG prompt "-" will appear.

4.Now, enable the DEBUG assembler at address "1C41" by typing

"A 1C41" at the DEBUG prompt in the following way:.
-A 1C41

5.After the above command is entered by pressing the Enter key, the
  following segment and offset address will appear (xxxx represents the
  segment and will differ depending on the machine in use):

xxxx:1C41

6.Now, on the same line, type the first assembly instruction "JB 1C45" so
  that the line looks like the following:

xxxx:1C41 JB 1C45

7.Press the Enter key and the next segment and offset address "1C43" will
  appear like the following:

xxxx:1C43

8.You will need to type 10 more assembly language instructions (11 total).
  Type the instructions as they appear in the following list and press the
  Enter key after each instruction. The first instruction has already been
  entered.

Assembly Language Instruction List

xxxx:1C41 JB 1C45
xxxx:1C43 JMP 1C99
xxxx:1C45 CALL 1C9A
xxxx:1C48 JB 1C7B
xxxx:1C4A PUSH ES
xxxx:1C4B PUSH DS
xxxx:1C4C PUSH DX
xxxx:1C4D MOV AH,2F
xxxx:1C4F INT 21
xxxx:1C51 ES:
xxxx:1C52 MOV DS, [01AE]

(In the above section "[01AE]", the "0" is a zero.)

9.When the "xxxx:1C56" segment and offset appear, type the Enter key and the
  Debug "-" prompt will appear again.

10.Now, enable Debug's editing feature at the offset "1F1B" in the following
   way:

-E 1F1B

11.Press the Enter key and the following segment, offset, and byte value
   will appear.

xxxx:1F1B 6A.

12.The value "6A" must be replaced with the value "06" by typing "06" on the
   same line and pressing the SPACE BAR to enter the value.

xxxx:1F1B 6A.06

13.The next value "0D" will appear on the same line.

xxxx:1F1B 6A.06 0D.

14.The value "0D" must now be replaced with "00" by typing "00" on the same
   line.

xxxx:1F1B 6A.06 0D.00

15.Press the Enter key to return to the Debug prompt "-".

16.Type "W" and press the Enter key to copy the new byte values and
   intructions to the XCOPY.NEW file.  The following message will appear:

WRITING 2BC0 BYTES

18.Now, type "Q" to exit DEBUG and then press the Enter key.

19.The patch is now complete.  The patched file XCOPY.NEW must

now be renamed to XCOPY.EXE.