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DOS20.DOC
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1980-01-01
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896b
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22 lines
PATCH FILE DOS20
This patch corrects 4 problems in DOS 2.00
The files patched are IBMDOS.COM and COMMAND.COM
These files should always be in the root directory.
Patch 1 - Get disk freespace function call will occasionally modify a buffer
incorrectly. (IBMDOS.COM)
Patch 2 - Same patch continued (IBMDOS.COM)
Patch 3 - Aborting to INT 24 does not restore vectors from PSP header.
(IBMDOS.COM)
Noticeably, after using the EXEC system call if the parent gets an
INT 24, an abort response will not go back to the parent.
(IBMDOS.COM)
Patch 4 - Reads from non-console devices in ASCII mode return incorrect counts
for a character read (IBMDOS.COM)
Patch 5 - Corrects an overlay of stack on return from function call 4Bh
(COMMAND.COM)