[Coco] OS-9 compression programs. What's available?

L. Curtis Boyle curtisboyle at sasktel.net
Thu Jul 2 11:26:34 EDT 2020

Are these text files or binaries? Creating them under OS-9, the LHA/XLH combo is probably the best, and compresses both text and binaries. ZIP on a PC (based on the PKZIP 2.04g algorithm) can be unzipped on a Coco/OS9 system with the UNZIP/FUNZIP combination. 

i should mention that both LHA and UNZIP need >128K to run. 

Sent from my iPhone

> On Jul 2, 2020, at 8:34 AM, Robert Gault <robert.gault at att.net> wrote:
> I should know this but can't remember :)
> I need a very good OS-9 compression program that can handle two data files that are 559,323 and 5,958,126 bytes, making them fit on a floppy image. If not that, how can I transfer them to a PC file where there are several good compression programs.
> I have tried the OS-9 program AR, but that made the files larger. :(
> The files exist on .vhd images on my PC and on similar devices like the CoCoSDC on my real Coco3. Wimgtool which will transfer files from floppy images to a PC, unfortunately does not work with .vhd images.
> Robert
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