Retro/pcjs
Watch
1
0
Fork
You've already forked pcjs
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Updated the MS-DOS 3.20 README

Browse source
This commit is contained in:
Jeff Parsons 2015-08-27 17:00:45 -07:00
commit 662ed5b819
1 changed files with 24 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

26
disks/pc/dos/microsoft/3.20/README.md
View file

@ -1,8 +1,30 @@
MS-DOS 3.20
---
The MS-DOS 3.20 floppies in the PCjs collection had a printed date of `March 21, 1986` (see the photo below).
However, all the files on Disks 1 and 2 are timestamped `7-07-86 12:00p`.
The MS-DOS 3.20 floppies in the PCjs collection are the only known non-OEM disk images available online.
All other known disk images are OEM releases (eg, HP, Zenith, Data General, Seiko Epson, etc.) and can
be found on sites like [WinWorld](https://winworldpc.com/product/ms-dos/320).
Disks 3 and 4 contained a printed date of `March 21, 1986` (see the photo below), which is consistent with
the file timestamps (`2-14-86` and `3-14-86`) on those disks. However, all the files on Disks 1 and 2 are
timestamped `7-07-86`. Apparently, the Programmer's Reference files were finalized several months in advance
of the final MS-DOS 3.20 binaries.
Based on the dates of the binaries, **July 7, 1986** is considered the release date of MS-DOS 3.20.
NOTE: Disks 1 and 2 are restored versions of the original disks, since the original disks had been slightly
modified for personal use. The disks should be complete, and all files should be genuine and in the original
order. As proof, the following data from Disk 1:
00013db0 0d 0a 0d 0a 4d 69 63 72 6f 73 6f 66 74 28 52 29 |....Microsoft(R)|
00013dc0 20 4d 53 2d 44 4f 53 28 52 29 20 20 56 65 72 73 | MS-DOS(R) Vers|
00013dd0 69 6f 6e 20 33 2e 32 30 0d 0a 20 20 20 20 20 20 |ion 3.20.. |
00013de0 20 20 20 20 20 20 20 28 43 29 43 6f 70 79 72 69 | (C)Copyri|
00013df0 67 68 74 20 4d 69 63 72 6f 73 6f 66 74 20 43 6f |ght Microsoft Co|
00013e00 72 70 20 31 39 38 31 2d 31 39 38 36 0d 0a 0d 0a |rp 1981-1986....|
matches the data listed at [16bitos.com](http://16bitos.com/320ms.htm), as do the MD5 checksums of IO.SYS,
MSDODS.SYS and COMMAND.COM.
Surprisingly Bad Bug in MS-DOS 3.20
---