From:	"Juan Manuel Guerrero" <ST001906 AT HRZ1 DOT HRZ DOT TU-Darmstadt DOT De>
Organization:	Darmstadt University of Technology
To:	pavenis AT lanet DOT lv, Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
Date:	Mon, 3 Sep 2001 13:45:44 +0200
Subject:	Re: gcc301 difficulty
CC:	djgpp-workers AT delorie DOT com
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The reason for the failure seems to be the processor.
I am using a system composed by:
MB:  Tyan Trinity 100AT
uP:  SGS-Thomson ST6x86 P166+ (FSB 66MHz, CPU Multiplicator: 2x)
RAM: 32MB (fast page) + 32MB (edo)

Please note that the uP is certainly *not* overclocked.
The only way to get gcc-301 working is to disable the internal
CPU cache (using BIOS settings). Disabling on-board L2 cache has
no influence. I have reduced FSB to 60MHz and reduced CPU Multiplicator
to 1x but it had no positive influence. I have substituted the board with
a Chaintech 5IFM but I have got no positive results. This old
board allows FSB of 55 MHz and 50 MHz. Lowering FSB seems to have
no influence and the only way to get gcc working with a cyrix cpu
(the cpu has no MMX instructions) seems to be to disable the
internal cache. Of course, this measure is not acceptable at all
due to the impressive slow-down.
I am very sorprised about all this. I have been using gcc30b.zip
for a month without any difficulty. I expected gcc301b.zip
to be only a minor bug fix release and not to cause such
difficulties.

Btw, I have tried to recompile gcc301s.zip. This seems impossible
using win95 (4.00.950). The genattrib program always dies with
the message that virtual memory has become exhausted. (DPMI
memory available=48726KB, DPMI swap space available=16106KB).
Am I missing something here? Can win95 not be used to compile gcc301?


Regards,
Guerrero, Juan Manuel

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