11 Feb
2006
11 Feb
'06
10:30 a.m.
The old rule of thumb (or wifes tale) was on the original PC and XT's it
was best to put all the high bandwidth adapters closer towards the power
supply like the Memory, then the MFM, RLL, and SCSI controllers,
followed by networking and video, then parallel and serial cards...
Do you have another system to test your card in, perhaps it is the card
or it could be a conflicting mem i/o setting?
Curt
Doc Shipley wrote:
Jim Leonard wrote:
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.6/257 - Release Date: 2/10/2006
I discovered tonight that the right-most ISA slot
(the one closest to
the power supply) in my newly-unearthed 5160 won't take the Silicon
Valley Computer ADP50L IDE controller I'm playing with. It will take
other (very short!) cards, but when I put the IDE controller into it,
either the option ROM is invisible (ie. 55AA not found) or won't
initialize for some reason, because I don't get functionality out of
it (least of all, the boot "banner" produced by the card is missing).
I can only conclude that:
1. The IDE board is slightly awry
2. The right-most ISA slot is slightly awry
3. There is some technical limitation I'm not aware of
#1 and #2 are easy to accept, but not #3. Is there such a limitation?
I think that there is. I have a Western Digital XT-150 IDE-XT
adapter, and WD's docs specifically state that "for IBM XT owners",
the card cannot be placed in the slot nearest the PSU. This also
applies to the WD XT-140.
I have no idea why that restriction exists; I just remembered seeing
it in the XT-150 docs.
Doc