Warm boot problem
paul at cs.utexas.edu
Thu Jun 28 08:39:48 AEST 1990
I am having a warm boot prolbem with my ESIX 386 system.
My configuration is the followings:
- Micronics 386-33 with 64KB 2-way associative cache
- 8MB memory
- AHA1542A SCIS host adapter
- Fujitsu M2249SA 330 MB drive
- Paradise Professional VGA
The disk has DOS and ESIX partition. When cache is enabled,
I would be able to cold boot ESIX (after long shutdown).
But the system will go into infinite loop whenever I try to warm boot
either by CNTRL-ALT-DEL, depressing reset button or cycling the power.
What I got in each loop are BIOS messages, memory check, AHA1542A
messages and a beep.
The problem disappears when I disable cache or reduce it to 32 KB
(direct-map). The reboot problem never occurs when DOS partition is
active. The only way to break the loop is to depress a key while the
BIOS is checking the keyboard. I would get a prompt for continuation
(F1) or setup (F2) after the AHA1542A messages. If I press F1, ESIX
will boot properly.
Has anyone ever experienced similar problem?
Btw, I was unable to set the DMA transfer speed on the AHA1542A higher
than 5.7 MB/s no matter whether cache is enabled or not. ESIX will
panic on boot whenever the speed is set at 6.7 or 8 MB/s.
Is it possible to get the speed higher than this?
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