DOS ain't dead

lDebug release 9 - Heatshrink compressed drives? (Announce)

posted by ecm  , Düsseldorf, Germany, 21.12.2024, 18:41

> If you ever feel bored, maybe you could consider building a heatshrinked
> version of SHSUCDHD? A possible implementation could be to keep a table of
> where compressed sectors start.
>
> This could even evolve to compressed RAMDISKs, partitions and maybe also
> EMS or XMS memory: In those cases, the drivers could claim that you have N
> times more space than you actually have, dynamically moving compressed
> sectors/blocks/clusters to 1:1, 1:2 or 1:4 compressed areas. In case N was
> too optimistic because entropy went up, they can just claim remaining
> clusters (or memory) are used now. With too little safety margin, it could
> even happen that they have to report write errors, but that case should be
> avoided.
>
> Just dreaming of a free DOUBLESPACE, DRIVESPACE or STACKER here Those
> used rather large compression blocks internally, which meant that they used
> a lot of RAM.

SHSUCDHD is a program that "Simulates a CD-ROM using an image file", right? Any particular reason you want it to support compression?

Other than that there's a number of different compression formats supported by inicomp and the scripts that do the packing (in lDebug's and kernwrap's scripts).

I did stick with heatshrink for the help pages and for packing extpak.eld, the packed library of Extensions for lDebug, though.

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l

Complete thread:

• lDebug release 9 - ecm, 21.12.2024, 13:49 (Announce)
  • lDebug release 9 - Heatshrink compressed drives? - mceric, 21.12.2024, 16:00
    • lDebug release 9 - Heatshrink compressed drives? - ecm, 21.12.2024, 18:41
      • lDebug release 9 - Heatshrink compressed drives? - mceric, 21.12.2024, 22:55
    • lDebug release 9 - Heatshrink compressed drives? - DosWorld, 02.01.2025, 18:24