19 Mar
2007
19 Mar
'07
3:35 a.m.
Dave, that's very strange. I just went and tried
it on one of my
"regular" systems, a box with an Intel TC430HX mobo in it. The
controller on this board is a National PC87306B (serial/parallel,
clock, floppy, IrDA and keyboard) that does just fine with FM. I
repeated on another "regular" box with an Intel PD440FX board (uses
the NS PD87307) with the same results.
Hi Chuck,
Thanks for the response. So you have not seen this before (single-
density working at 250kbps but not 300kbps)?
The board in question is an Aopen AP5T which has an SMC FDC37C669
controller.
I just tried the same drive on another system with an NS PC87306
controller, and it does work pefectly at 300kbps.
The question is - how common is this? - I'll have to dig out some
of my other systems that do SD and test them. Problem is - most of
them only support one physical FDC so they only have a 3.5 installed.
Dave
--
dave06a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
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