Contents of the ECHOPA.TXT file
PATCH FOR MS-DOS 5.0's COMMAND.COM:
(COMMAND.COM file date and size: 4/9/91, 5:00 am; 47,845 bytes)
To make ECHO OFF the default for .BAT files, including AUTOEXEC's.
The first byte that is changed (03 => 02) is the last byte in the 5-byte string
'C6 06 A6 02 03', which is a MOV BYTE PTR [02A6],03 instruction. The second
of the two changed bytes (01 => 00) is the second byte in '24 01', or an
AND AL,01 instruction.
This patch should be done on a floppy-disk copy of COMMAND.COM, tested, and
then transferred to your hard disk (or boot disk). I have tried this patch on
my system, and it seems to work fine. This patch should work for everybody,
but I have no way of knowing for certain.