4000's and SCSI II contr
11-Oct-93 21:23:45
Sb: #117646-4000's and SCSI II contr
Fm: John Gager 71336,624
To: Alan K. Adamson 72370,613
Well Alan, I have the HC8 with the 4.13 ROM's, but I'm not sure yet if
that makes it a 4008 controller. I left a message for Gary Nush of GVP to
get a little clarification on this matter, so maybe he will jump in here
to clarify things a little. Although the HC8 works much better than the
2091, it still seems like it should be faster than it is. I get about
750K/sec transfer rates on a 1.3GB SCSI-II drive. When the 4091 is
installed, I get about 2.7MB/sec transfer rates. I'm beginning to believe
that if I want any faster transfer rates out of the HC8 that I would have
to add some 16-bit memory to the 4000, but I don't think I will do that
unless I see no hope of getting this 4091 to work <g>.
As far as Mapboard goes, I'm not sure if it would speed up anything or
not. I haven't tried it yet for the HC8 so maybe when I have a chance I'll
see if it works.
Haven't added any more IDE drives to the 4000 because that 1.3GB SCSI-II
Toshiba should hold me over for awhile <g>. Actually I wan't to stay away
from IDE as much as possible. Once I get that 4091 to work, I plan on
retiring the SeaGate IDE drive to my Vortex Bridgeboard. As to your
SeaGate cold boot problems, maybe you have one of those SeaCrates that
doesn't initialize fast enough before the controller goes out and polls
it. SeaGate's have been notorious for this, and it wouldn't surprise me if
your's is having that problem. There is a specific list of IDE drives
compatable with the 4000 so you have to be careful.
// John – (Flying via AutoPilot)
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