TRS-DOS as possible prior art for MS patent on exFAT, and Reference request

No solid citations, but a few more leads: On Sun, 16 Sep 2012, Eric Smith wrote: That is, indeed, the obvious citation. Pennington also published a series of later books as the "& other mysteries" series, AND published a PC port of Michael Shrayer's "Electric Pencil" Can Randy Cook be found? He wrote the original TRS-DOS. He was residing in Carrollton (sp?) Texas. Who was behind the "TRS-DOS 4" release? Howzbout "Adventure International" in Florida (who had prior success with adventure games) and released VT-OS If not, howzbout Roy Soltoff? and the rest of the team that rewrote VTOS into L-DOS. When Radio Shack re-released L-DOS as TRS-DOS 6?, there was some discussion in the media about Randy getting royalties. Is the [copyrighted] source code still around? That wouldn't show "infringement", but it would certainly show prior art. Also, contact Mike Gingell. He wrote "TRS-CROSS"? (sp?) Which read and wrote TRS-DOS on PC, and a few other items that dealt with TRS-DOS at that level. IIRC, in some of his documentation, he discussed the format. I think that I remember something by Bill Barden. He wrote some stuff such as describing FM as used on TRS80, and accesd to the FDC on TRS80 I explained the HASH idea in a DP48a course in Vista College in Fall 1981 (physically held in Evans 10!) But I doubt that any of my lecture notes still exist. -- Grumpy Ol' Fred cisin at xenosoft.com