DOS ain't dead

lDebug release 9 - Heatshrink compressed drives? (Announce)

posted by mceric, Germany, 21.12.2024, 22:55

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

Yes. Because the image is read-only, it will be easier to support compressed static images of a CD (with a nice sector size of 2kb, too) than it will be to implement compressed writeable drives.

For ISO images, one could for example have a simple table of offsets where each compressed sector starts, as a header for the compressed image. With an algorithm like Heatshrink which uses very little RAM to decompress, the whole driver could have a very small RAM footprint

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FreeDOS / DOSEMU2 / ...

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
    • lDebug release 9 - Heatshrink compressed drives? - jadoxa, 29.01.2025, 08:46
      • Heatshrink compressed drives? - Tamp ISO compression test - mceric, 30.01.2025, 02:21
        • Heatshrink compressed drives? - Tamp ISO compression test - tom, 30.01.2025, 17:36
        • Heatshrink compressed drives? - Tamp ISO compression test - jadoxa, 31.01.2025, 09:24
          • Heatshrink compressed drives? - Tamp ISO compression test - mceric, 31.01.2025, 15:15
            • Heatshrink compressed drives? - Tamp ISO compression test - mceric, 31.01.2025, 23:33
              • Heatshrink compressed drives? - Tamp ISO compression test - tom, 01.02.2025, 11:19
                • Heatshrink compressed drives? - Tamp ISO compression test - mceric, 01.02.2025, 13:54
                  • Heatshrink compressed drives? - Tamp ISO compression test - jadoxa, 01.02.2025, 15:33
              • Heatshrink compressed drives? - Tamp ISO compression test - mceric, 06.02.2025, 02:42
                • Snappy compression - ecm, 06.02.2025, 04:26
                  • Snappy compression - mceric, 08.02.2025, 01:04
                    • Snappy compression - script to build a compressed executable - ecm, 08.02.2025, 18:02
                      • Snappy compression - script to build a compressed executable - ecm, 09.02.2025, 21:38
          • Heatshrink compressed drives? - Tamp ISO compression test - tom, 31.01.2025, 17:42
      • lDebug release 9 - Heatshrink compressed drives? - Oso2k, 30.01.2025, 05:12