DOS ain't dead - UIDE etc. (Oct. 16)

UIDE etc. (Oct. 16) (Announce)

posted by Rugxulo , Usono, 16.10.2011, 20:44

> Johnson Lam has posted a new 16-Oct-2011 DRIVERS.ZIP file on
> his website at http://johnson.tmfc.net/dos/driver.html .
>
> In it, UIDE has again been reduced down to a 7.5K-byte file,
> same as UIDE2, for "boot" diskettes and other systems having
> limited space. So, UIDE-S is no longer needed, and it has
> been eliminated! UIDE2's performance is also improved, and
> all other drivers have merely been re-dated to 16-Oct-2011.
>
> To get UIDE below 7.5K, I had to delete its /M switch. /M
> saved only 256 bytes of HMA, "not enough" to matter, as UIDE
> uses only 4336 bytes of HMA in all cases. Even poor MS-DOS
> V7.10 (short on HMA due to long-filename and Win95/98 logic)
> still has 9100+ bytes of free HMA, and a "BUFFERS=4" command
> in CONFIG.SYS can reduce what the kernel needs! Most other
> DOS systems have MUCH more free HMA and should be no problem
> if loading UIDE with a /H switch. UIDE can be re-assembled
> with "SBUFSZ equ 256", if anyone absolutely requires its 256
> byte binary-search buffer (runs maybe 1% slower)!
>
> The UIDE2 driver now runs a "hair" faster for protected-mode
> users, due to re-adding the old "ScnD" subroutine which uses
> a "scasw" command (not a full binary-search) in deleting old
> cache-table entries. "ScnD" is used with UIDE2's /H or /HL
> switches, as its HMA caches are small enough for such logic.
> Large caches in upper/DOS memory still use the current UIDE2
> "SrchD" routine, for better speed with bigger search tables.
>
> The "UIDE" caching drivers now consist of only --
>
> 1) The UIDE.ASM source file (assembles both drivers).
> 2) The UIDE.SYS driver for up to 4-Gigabyte caches.
> 3) The UIDE2.SYS driver for "fast" caches in protected-mode.
>
> I hope such a "simplification" is of benefit for UIDE users!

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Complete thread:

UIDE etc. (Sep. 23) - Rugxulo, 25.09.2011, 03:40 (Announce)
- UIDE etc. (Sep. 30) - Rugxulo, 04.10.2011, 15:49
  - UIDE etc. (Oct. 7) - Rugxulo, 13.10.2011, 22:02
    - UIDE etc. (Oct. 16) - Rugxulo, 16.10.2011, 20:44