DOS ain't dead - New 11-16-2009 UIDE Available.

New 11-16-2009 UIDE Available. (Announce)

posted by Rugxulo , Usono, 22.11.2009, 00:42

> Johnson Lam has posted a new DRIVERS.ZIP file on his website at --
>
> http://johnson.tmfc.net/dos/driver.html
>
> The 16-Nov-2009 UIDE can cache up to 4 GIGABYTES of data! This now
> allows
> a 4-GB PC system to have, for example, a 500-MB RAMdisk using RDISK,
> 500-MB
> of XMS saved for other drivers/programs, and a 3-GB UIDE cache! That
> will
> provide a "SCREAMING Fast!" DOS system!

I thought due to PCI space (or whatever) that only 3.1 GB or such was generably accessible?

> I have only 1-GB, so I tested the driver "patched" for 16K-byte data
> blocks
> (not its usual 64K-byte blocks), and UIDE handled all possible cache
> blocks
> properly. If anyone has a REAL 4-GB system, I would appreciate hearing
> if
> UIDE in fact works O.K. with it.

I know you already had one success story, but try contacting Zyzzle. IIRC, he was the guy with lots of RAM.

> Though faster, UIDE's /P switch has memory limits.
> FreeDOS does not make HMA available when CONFIG.SYS runs, but FreeDOS
> users
> can run DEVLOAD from AUTOEXEC.BAT to put UIDE in the HMA. UIDE /P can
> set
> up to 400-MB HMA caches for FreeDOS, depending on BUFFERS= and other
> values
> that also take HMA space.

I will have to try DEVLOADing this to see if it works. (I don't remember it being successful in the past, but I admit it's been a while.)

> With /P, UIDE sets a 5-MB HMA cache only if /S5 is used and free HMA
> allows
> this cache. The 5-MB cache runs slower, so it is "by request only".

I don't understand, 5 MB cache runs slower with /P or just slower than bigger caches in general? For instance, I always run a 5 MB cache on my P166 (only 32 MB RAM total). We really need a good but simple benchmark for UIDE changes (e.g. compiling TDE is what I typical would use).

> Real-mode UMBPCI users do not need UIDE /P. A protected-mode JEMM386
> user
> can now choose between UIDE /P, for more speed using medium-size caches,
> or
> UIDE without its /P switch when a larger cache is required.

Slightly complex, but good to know. Thanks! ;-)

Post reply

Complete thread:

New 11-16-2009 UIDE Available. - Jack, 20.11.2009, 13:50 (Announce)
- Steve Burd Says 4-GB UIDE Works Fine! - Jack, 21.11.2009, 00:59
- New 11-16-2009 UIDE Available. - Rugxulo, 22.11.2009, 00:42
  - Comments On New 16-Nov-2009 UIDE. - Jack, 22.11.2009, 04:35
    - Comments On New 16-Nov-2009 UIDE. - RayeR, 23.11.2009, 01:11
      - Comments On New 16-Nov-2009 UIDE. - Jack, 23.11.2009, 07:41
- Better 11-22-2009 UIDE Available. - Jack, 24.11.2009, 08:48
  - Better 11-22-2009 UIDE Available. - Zyzzle, 25.11.2009, 02:52
    - Comments On 11-22-2009 UIDE. - Jack, 25.11.2009, 08:26