6 Feb
2007
6 Feb
'07
4:55 p.m.
--- Jules Richardson <julesrichardsonuk at yahoo.co.uk
wrote:
Chuck Guzis wrote:
> On 5 Feb 2007 at 20:23, Jim Leonard wrote:
**>> snip <<**
> I don't see the correlation. What good is
bette
r
error correction if
a
it's built on a less reliable technology?
Well said :) If the optical media were enclosed in case (CD caddies,
anyone?) then at least it would go some way toward
preventing damage from
scratches, fingerprints etc.
**>> snip <<**
cheers
Jules
I remember CD caddies :)
I recall back at secondary school in my first
year there (year 7 for UK'ers), in 1990/1, that
the new computer in the library used CD's
which were in see through plastic.
Essentially the "CD" of the time was like
floppy discs - the writable media (medium?)
was encased in protective plastic shell.
I haven't seen any like that ever since.
I don't suppose anyone on this list has any
like that?? If so, I'd love to see a picture of
it, please.
Regards,
Andrew D. Burton
aliensrcooluk at yahoo.co.uk
6 Feb
6 Feb
5:28 p.m.
On 6/2/07 21:55, "aliensrcooluk at yahoo.co.uk" <aliensrcooluk at
yahoo.co.uk>
wrote:
I remember CD caddies :)
I recall back at secondary school in my first
year there (year 7 for UK'ers), in 1990/1, that
the new computer in the library used CD's
which were in see through plastic.
Essentially the "CD" of the time was like
floppy discs - the writable media (medium?)
was encased in protective plastic shell.
Sounds like the Philips 1x speed CD that was used by DEC as the RRD40. It
took standard CD-ROMs but they were inserted in a plastic shell because the
drive had no tray or any other means of supporting the CD.
My own RRD40 caddies are 250 miles away but I've got a drive at work :)
In the meanwhile, look towards the bottom of this page:
http://home.claranet.nl/users/pb0aia/cm/sroom.html
--
Adrian/Witchy
Binary Dinosaurs creator/curator
Www.binarydinosaurs.co.uk - the UK's biggest private home computer
collection?
7:34 p.m.
Adrian Graham wrote:
On 6/2/07 21:55, "aliensrcooluk at
yahoo.co.uk"
<aliensrcooluk at yahoo.co.uk> wrote:
Mine are right here but you've saved me the bother of photographing
an example (the bit that pulls out was called the "antlers"
apparently).
I would have thought that seven years ago the RRD40 was already
a distant memory. (Its predecessor BTW was the RRD50 which was
a tabletop unit top-loading CD-ROM that was _slower_ than 1x!)
In a school in 1990 I would guess that this is just the
standard "flip-top" lid caddy that many early CD-ROM units
used. I can see ten of them over to the left; I could take
a snap of one of those too but there must be gazillions
on the net already.
Indeed here is one:
http://www.weirdstuff.com/mas_assets/thumb/16024.jpg
and here's a diagram from SGI just to be clear about
how it works:
http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi/0650/bks/SGI_EndU
ser/books/PChall_L_OG/sgi_html/ch04.html
Antonio
I remember CD caddies :)
I recall back at secondary school in my first
year there (year 7 for UK'ers), in 1990/1, that
the new computer in the library used CD's
which were in see through plastic.
Essentially the "CD" of the time was like
floppy discs - the writable media (medium?)
was encased in protective plastic shell.
Sounds like the Philips 1x speed CD that was used by DEC as the
RRD40. It took standard CD-ROMs but they were inserted in a plastic
shell because the drive had no tray or any other means of supporting
the CD.
My own RRD40 caddies are 250 miles away but I've got a drive at work
:) 
7 Feb
7 Feb
1:36 p.m.
On 7/2/07 00:34, "arcarlini at iee.org" <arcarlini at iee.org> wrote:
Mine are right here but you've saved me the bother
of photographing
an example (the bit that pulls out was called the "antlers"
apparently).
That's today's thing that I've learnt :)
I would have thought that seven years ago the RRD40
was already
a distant memory. (Its predecessor BTW was the RRD50 which was
a tabletop unit top-loading CD-ROM that was _slower_ than 1x!)
I've seen an RRD50 somewhere, possibly Bletchley Park! QBUS attachment IIRC,
same as the winchester type connector used on the RQDXE.
In a school in 1990 I would guess that this is just
the
standard "flip-top" lid caddy that many early CD-ROM units
I thought that at first but Andrew said some of the caddy came back out
again?
I'm still marginally kicking myself for driving ebay whilst, er, 'refreshed'
and buying a CD caddy for the Commodore CDTV's 1 speed CDROM, it's identical
to every other one you've seen ever.....but it's black. That's ukp7 I
won't
get back :)
--
Adrian/Witchy
Binary Dinosaurs creator/curator
Www.binarydinosaurs.co.uk - the UK's biggest private home computer
collection?
9 Feb
9 Feb
9:26 a.m.
aliensrcooluk at yahoo.co.uk wrote:
I remember CD caddies :)
I recall back at secondary school in my first
year there (year 7 for UK'ers), in 1990/1, that
the new computer in the library used CD's
which were in see through plastic.
I suppose I was at college about that time, and we had one system in the
entire place with a CDROM attached.
We were pretty much all on Apple equipment (a few stray Pluses, but mainly LC
II and III machines), but the CDROM machine was a Goldstar PC - I don't recall
the name of the CDROM unit though, which was an external caddy-based type.
There was still a Domesday system [1] around, incidentally (the college
historically had done a lot of user testing for Acorn), plus my IBM PC and XT
came from there when I unearthed them in a cupboard.
[1] I'd forgotten about that; I should give them a prod and see what happened
to it...
cheers
Jules
5:51 p.m.
On Fri, 9 Feb 2007, Jules Richardson wrote:
I suppose I was at college about that time, and we had
one system in the
entire place with a CDROM attached.
. . . and when another CDROM was requested, it would get hung up in the
budget process because it required another computer. For a long time,
EACH CDROM had a dedicated computer. But, the administration COULD grasp
the concept of a single projector or VCR to go with a whole collection of
tapes or films.
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participants (5)
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aliensrcooluk＠yahoo.co.uk -
arcarlini＠iee.org -
cisin＠xenosoft.com -
julesrichardsonuk＠yahoo.co.uk -
witchy＠binarydinosaurs.co.uk