Base85 for DOS

Usual '-d' parm to decode.


Last minute fix as it didn't encode short string of binary zeros at eof
correctly: (+6)

->          d 100 lD1
1639:0100 B4 3F B9 F8-70 BA D1 01-CD 21 91 E3-74 89 D6 BF  .?..p....!..t...
1639:0110 C9 72 57 B3-55 80 3E 83-00 64 74 66-83 E9 04 77  .rW.U.>..dtf...w
1639:0120 0D 74 0A B7-80 B0 00 BD-04 00 E8 46-00 55 AD 86  .t.........F.U..
1639:0130 E0 95 AD 86-E0 89 C2 D0-E7 14 00 09-E8 75 05 B0  .............u..
1639:0140 7A AA EB 1C-51 B9 04 00-52 31 D2 95-F7 F3 95 58  z...Q...R1.....X
1639:0150 F7 F3 92 50-E2 F2 52 B1-05 58 04 21-AA E2 FA 59  ...P..R..X.!...Y
1639:0160 09 C9 75 B8-59 5A B3 01-01 F9 29 D1-B4 40 CD 21  ..u.YZ....)..@.!
1639:0170 4B EB 8D 57-89 F7 01 CF-01 EF 89 CD-F7 D9 F3 AA  K..W............
1639:0180 5F C3 80 3C-7A 75 09 31-C0 AB AB 46-E2 F4 E3 D5  _..<zu.1...F....
1639:0190 83 E9 05 77-0B 74 08 B0-75 BD 05 00-E8 D4 FF 55  ...w.t..u......U
1639:01A0 51 31 C0 99-31 ED B9 05-00 AC 2C 21-72 12 98 50  Q1..1.....,!r..P
1639:01B0 52 95 F7 E3-95 58 F7 E3-01 D5 5A 01-C2 83 D5 00  R....X....Z.....
1639:01C0 E2 E7 95 86-E0 AB 92 86-E0 AB 59 09-C9 75 B3 EB  ..........Y..u..
1639:01D0 93                                               .
->          q


--
Bah, and indeed Humbug.