    BIOSTAR 8500TTD motherboard BIOS TTD0616B (06/11/98)
    with patch J.2 for Cx MII, AMD K6-2CXT, K6-III, K6-2+ and K6-III+ support,
    and for IDE HDDs up to 128GB (32GB bugfix).
    05/10/2012
    by Jan Steunebrink

The latest, and probably final, BIOS upgrade from BIOSTAR for the TTD8500 is
version TTD0616B. This BIOS does not support the (mobile) K6-2+/III+ CPUs.
Also the original K6-2CXT / K6-III, and Cyrix MII CPUs with 4.0x multiplier,
are not properly supported.
To overcome these problems, I have patched the TTD0616B BIOS to include proper
recognition and handling of the MII, K6-2CXT, K6-III, and K6-2+/III+.
I've made the following changes:
- Added detection of the Cyrix MII when set to 4.0x multiplier
- Added detection of the K6-2+, and K6-III+ CPUs
- Expanded the K6 Write Allocation feature to work also on all K6-2/III CPUs
  with the CXT core and enabled this feature for the K6-2+ and K6-III+ as well
- Expanded the CPU Type display routine for correct display of the AMD-
  K6(tm)-III, K6(tm)-2+, and K6(tm)-III+ strings
- Added 6.0x83 (500MHz), 5.5x83 (458MHz), 6.0x75 (450MHz), and 5.5x75 (412MHz)
  support for the K6-2CXT, K6-III, K6-2+ and K6-III+
  Deleted the unused 350MHz (3.5 x 100) support to make room for this change.
- Set the BIOS Setup Defaults for the Video and System BIOS Cacheable options
  to Disabled. The K6-III and K6-2+/III+ need this setting to run properly.

In addition I have applied a patch to remove the 32GB IDE harddisk limit bug,
and made another patch to remove an additional 64GB limit bug.
This patch J.2 BIOS supports now IDE drives upto 128GB, provided the harddisks
TYPE and MODE are set on Auto for drives larger than 64GB. 
(Note: Due to another bug the BIOS SETUP hangs when manually inserting
HD parameters above 65535MB or when using the IDE HDD Auto Detection
function of the BIOS on drives larger than 64GB. Just set the Harddisks
TYPE and MODE to Auto for any drive above 64GB to avoid this error.)

For all other functions, my patched BIOS is identical to the original TTD0616B,
so you don't have to clear the CMOS if you upgrade from this BIOS.

The filename of the patched BIOS is TTD_J2.BIN and you can flash it with
the flash program you normally use to flash a TTD8500 BIOS upgrade.
Please take the usual precautions when flashing your BIOS.
Refer to BIOSTAR's web-site for the proper flash procedure and the AWDFLASH
program.

Note that, although this patched BIOS has been tested on different TTD8500
systems without any problems, it is provided "as is" and you use it
at your own risk.

I like to thank everybody who participated in testing this BIOS.
Jan.

Homepage: http://web.inter.nl.net/hcc/J.Steunebrink/
E-mail  : J.Steunebrink@net.HCC.nl
