Path: utzoo!attcan!telly!lethe!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!uunet!wuarchive!zaphod.mps.ohio-state.edu!rphroy!trux!car
From: car@trux.UUCP (Chris Rende)
Newsgroups: comp.sys.3b1
Subject: Seperate HD & FD controllers?
Message-ID: <528@trux.UUCP>
Date: 13 Feb 91 16:00:51 GMT
Followup-To: comp.sys.3b1
Organization: Central Cartage, Sterling Hgts., MI
Lines: 19

I've noticed that the 3b1 can only access one disk at a time. I.e., during
floppy disk accesses the hard disk is idle - and vice versa. (Especially
evident during floppy formatting).

However, I've seen references to seperate HD and FD controller chips.

I suspect that there is some common circuitry between the HD and FD interfaces
which prevents them from operating independantly. (IBM PC clones have seperate
controllers which can work independantly - 3b1's don't seem to have that
luxury).

Is this true?

car.
-- 
Christopher A. Rende           Central Cartage (Nixdorf/Pyramid/SysVR2/BSD4.3)
uunet!edsews!rphroy!trux!car   Multics,DTSS,Unix,Shortwave,Scanners,UnixPC/3B1
trux!car@uunet.uu.net          Minix 1.2,PC/XT,Mac+,TRS-80 Model I,1802 ELF
trux!ramecs!car     "I don't ever remember forgetting anything." - Chris Rende