harry@moncam.co.uk (Jangling Neck Nipper) (08/01/89)
Are the TOS 1.4 ROM's available in the UK now, and if so, where? How
much? Can they be put into a (fairly ancient) 520? I have been told
no, but is this because 1.4 is going out on bigger ROM's, or will the
new TOS simply not work with such an old machine?
Secondly, I have a Quantum 60 (100?) MB Hard Disk with embedded SCSI
that I want to use. I've heard that Adaptec make a controller to
go to SCSI; what's its number, and where (pref. UK) can I get it
(how much?). Also, the Supra HD software seems like a good thing
to get; again, where from and how much?
Thirdly, can I hang other devices off the SCSI? Someone said that you
could get more than one *hard* disk going because of the way the Supra
driver deals with them; would it handle other SCSI devices in the same
way, or would another driver be needed (assuming it's at all doable)?
Thanks in advance.
--
Harry Fearnhamm, EMAIL: harry@moncam.co.uk
Monotype ADG, ...!ukc!acorn!moncam!harry
Science Park, VOICE: +44 (0)223 420018
Cambridge, FAX: +44 (0)223 420911
CB4 4FQ,
ENGLAND.Henry_Burdett_Messenger@cup.portal.com (08/02/89)
> Secondly, I have a Quantum 60 (100?) MB Hard Disk with embedded SCSI > that I want to use. I've heard that Adaptec make a controller to > go to SCSI; what's its number, and where (pref. UK) can I get it > (how much?). Also, the Supra HD software seems like a good thing > to get; again, where from and how much? You don't need a SCSI disk controller with an embedded SCSI drive. +--------+ | DMA|---->[DMA/SCSI]=====>[SCSI disk drives] | ST | | | +--------+ and/or +--------+ | DMA|---->[DMA/SCSI]=====>[ SCSI ]++>[ST506 drives] | ST | [controller] | | +--------+ Since your disk drive already speaks SCSI, you won't need an Adaptec (4010, 4070) or Xebec (S1410) controller. SCSI controllers are for old-style ST-506 drives like Seagate ST-225s. What you _will_ need is a DMA/SCSI adaptor. There are a couple: one made by Berkeley Microsystems and one made by Supra. Both come with a battery-powered clock to set the ST's time at power-up. > Thirdly, can I hang other devices off the SCSI? Someone said that you > could get more than one *hard* disk going because of the way the Supra > driver deals with them; would it handle other SCSI devices in the same > way, or would another driver be needed (assuming it's at all doable)? You can add up to seven SCSI disk drives or SCSI controllers. Most SCSI controllers support 2 logical units, so you could connect up to 14 winchester disk drives to your ST. > Harry Fearnhamm, EMAIL: harry@moncam.co.uk > Monotype ADG, ...!ukc!acorn!moncam!harry - hbm ------------------------------------------------------------------- Henry B. Messenger henry_burdett_messenger@cup.portal.com Digital Equipment Corporation isn't responsible for anything I say on Usenet.