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WHATSNEW.DOC
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1994-06-09
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WHAT'S NEW IN VERSION 2.41
Version 2.41 is basically a maintenance release to correct some problems
discovered in version 2.40:
o CHIPSET.EXE, LASTBYTE.SYS: Added support for the UNIchip
U4800VLX, which is functionally different from the (non-VLX)
U4800 predecessor. CHIPSET used to identify both as a U4800,
but unfortunately the low-level physical driver for the U4800
won't work for the U4800VLX. CHIPSET now distinguishes these
two chipsets, and a new low-level physical driver just for
the U4800VLX has been added to LASTBYTE.SYS.
o HIGHUMM.SYS: Wouldn't allocate UMB's even though it reported
that UMB memory was available. A necessary but not
sufficient condition for this to occur was that HIGHUMM had
"split" (placing most of its code in R/O memory, Bank-Switch
Memory, or the HMA), and could be corrected in version 2.40
by use of the "/NOSPLIT" command line option. This bug has
been corrected, and the command line option is no longer
needed.
o CHIPSET.EXE: The Headland/G2 HT113 was incorrectly identified
as a HT103. Corrected.
o LASTBYTE.SYS: Corrected bugs in the low-level physical
drivers for the HINT CS8001 and CS8005, and the OPTi 82C463,
82C499, 82C801, and 82C802. The bug in the 499/801/802
driver was mismatched PUSH and POP instructions, which caused
the driver to hang on initialization. No problems had been
observed with the other chipsets listed, but I found that
they contained code that should have been protected by a
PUSHF/CLI...POPF sequence; this protection has been added.