September 10, 2010 – New Downloads thanks to Vernon B Hester

September 10, 2010 – New Downloads thanks to Vernon B Hester


Vernon B. Hester, author of MultiDOS and other wonderful programs, has provided some additional copies of his DOS’s:

Esoteric DOS v2.11 for Model 4
MultiDOS v4.01 for Model I
MultiDOS v4.01 for Model III
MultiDOS v5.11 for Model 4

ESOTERIC is a Model 4 version of MULTIDOS with two differences: Video (Esoteric is 80×24 vs. MultiDOS which is either 80×24 or 64×16) and ESOTERIC is mapped significantly different than Model 4 MULTIDOS. The mapping of the Model 4 is very similar to the Model I, Model III, and MAX-80 version of MULTIDOS, while ESOTERIC’s mapping difference was desired to keep the DOS in contiguous memory (0000H through 1AFFH) allowing one to ORG applications at 1B00H.

August 2, 2010 – New Downloads thanks to Vernon B Hester

August 2, 2010 – New Downloads thanks to Vernon B Hester


Vernon B. Hester, author of MultiDOS and other wonderful programs, has made his software and manuals available:

Astrocal Manual (5th Edition) – DOC Format
Astrocal Manual (5th Edition) – PDF Format
MultiDOS Manual – DOC Format
MultiDOS Manual – PDF Format
Zeus (9th Edition) – DOC Format
Zeus (9th Edition) – PDF Format

When my host fixes my SQL upload, and I can get into the TRS-80 Archive Lookup, I will post the corresponding software packages here for download.

Also as previously noted, Vernon has a blown Model 4 power supply, which is preventing him from providing updated software. Any help is appreciated.