The following are the known patches for DOUBLEDOS version 4.0. You should
always work with a copy of the file and not the original. The DEBUG program
should be available via path or be called explicitly. The patch dialog
would be something like the following:

C:\dirname\>DEBUG DOUBLED2.PGM
- enter changes as specified in patch
-W
writing xxxx bytes
-Q

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Hewlett Packard Vectra 1/14/87
-E 85D5 F5 (old value BA)
note: will not work with International Quartz laptop after this patch.
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very slow printing w/clock or interrupt
-E 116 EA 83 (old values 6E B0)
-E 24A9 21 90 ( " " E8 BD)
note: only use with clock or interrupt when very slow printing occurs.
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IBM DOS 3.3 4/24/87
-E 2130 20 (old value 10)
-E 878C C0 A1 ( " " 41 81)
-E 8B7D 03 50 ( " " 6C 4C)
-E 9487 7F FF B7 6E 20 80 C2
( " " A7 E0 C5 32 0B 33 FF)
note: will not work with any other operating system after this patch.
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Columbia DOS 3.20
-E 8B7D CE (old value 6C)
note: will not work with any other operating system after this patch.
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Drives with volumes larger than 32 megabytes
-E 4E3A 5F B8 (old value )
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