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Update README.md
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turkishrational authored Nov 1, 2024
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14 changes: 6 additions & 8 deletions README.md
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Expand Up @@ -5,11 +5,10 @@ link: https://www.singlix.com/trdos/retrodos/index.html

www.youtube.com/@erdogantan

NOTE:
== means aproximately equal (equivalent) or "BASED ON MSDOS .." (but contains more optimized code than the original)
NOTE:
== means aproximately equal (equivalent) or "BASED ON MSDOS .." (but contains more optimized code than the original)


Retro DOS kernel and command.com source code assembler: NASM ("Multi Section Binary File format" method)
Retro DOS kernel and command.com source code assembler: NASM ("Multi Section Binary File format" method)

construction: Retro DOS bootsector (loads combined kernel)
MSDOS.SYS (IO.SYS+MSDOS.SYS), COMMAND.COM
Expand All @@ -33,14 +32,13 @@ Retro DOS v3.1 == compact (a bit more utilizied than Retro DOS v3.0) -not compat
Retro DOS v3.2 == MSDOS 3.3 + 32bit disk sectors support (like as in MSDOS 5.0) -not compatible with Windows 3.1-
Retro DOS v3.3 == MSDOS 3.3 -Windows 3.1 compatible- (but this kernel does not support 32bit disk sectors)

Retro DOS v4.0 == MSDOS 5.0
Retro DOS v4.1 == compact (a bit more utilizied than Retro DOS v4.0)

Retro DOS v4.0 == MSDOS 5.0
Retro DOS v4.1 == compact (a bit more utilizied than Retro DOS v4.0)
Retro DOS v4.2 == MSDOS 6.22 (without DBLSPACE feature) -Multi Configuration Menu Support-

Retro DOS v5.0 == IBM PCDOS 7.1 (with bugfixes) -FAT32 file system support-

Retro DOS v3.3 to 5.0 are full compatible with Windows 3.1
Retro DOS v3.3 to 5.0 are full compatible with Windows 3.1.

Retro DOS v5.0 has all features of PCDOS 7.1.
(also it contains 10 bugfixes, 9 IBM, 1 Microsoft code bugfix)
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