[comp.sys.atari.st] CD-ROM

gjh@hplb.hpl.hp.com (Graham Higgins) (10/04/90)

What's the current state of play regarding CD-ROM for the ST?  

The reason I ask is that there's a Sony portable CD player available here in
the UK for an affordable 250-odd sterling. It has a built-in SCSI i/f, so in
theory, should be connectable to an ICD DMA-SCSI adaptor. 

Given that it's a Sony, ICD reckon that their driver s/w should be able to
recognise it.

Is that all that's required, or am I missing a trick somewhere? Shouldn't there
be some kind of hassle like incompatible disk formats (High Sierra vs Low Swamp
or somesuch)? 

It's not that I'm cynical, you understand, just skeptical.

Cheers,

Gray
====

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Graham Higgins             	|  Phone: (0272) 799910 x 24060
Hewlett-Packard Labs    	|  gjh%ghiggins@hpl.hp.co.uk
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U.K.                          	|  
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Disclaimer: My opinions above are exactly that, mine and opinions.
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hojo@cbnewsl.att.com (HC Johnson) (10/06/90)

In article <GJH.90Oct4160817@ghiggins.hpl.hp.com>, gjh@hplb.hpl.hp.com (Graham Higgins) writes:
> 
> What's the current state of play regarding CD-ROM for the ST?  
> 
> The reason I ask is that there's a Sony portable CD player available here in
> the UK for an affordable 250-odd sterling. It has a built-in SCSI i/f, so in
> theory, should be connectable to an ICD DMA-SCSI adaptor. 
> 
> Given that it's a Sony, ICD reckon that their driver s/w should be able to
> recognise it.
> 
> Is that all that's required, or am I missing a trick somewhere? Shouldn't there
> be some kind of hassle like incompatible disk formats (High Sierra vs Low Swamp

When you buy the Atari CDROM you get (logicaly) three pieces:
1. the CDROM player (CDAR504)
2. a Driver to talk almose SCSI to tell it what to do.
3. the cd rom extensions to TOS.

Really it just called metados and the appropriate format interpreter; e.g. high
sierra.  I phrased is as above because that is what you get for a PC clone
and Atari did a very creditable job of producing the same function.

The cd rom extensions are really needed, and quickly show the difference between
good applications and others.  Remember that if TOS is to read a file it normally has to think interms of a 16 or 32 MB partition, MAX.  (forget the hdx 3.01 
extensions; they dont apply).  The CDROM is likely a singel file system of 
up to 1200 Mega bytes.

The extensions trap all the FS unique system calls, such as FSFIRST, FSNEXT,
READ and do it differently.

The High Sierra, and other formats have to do with how the large file system
is organized.  HS looks like TOS (MS/DOS) with out fats.  All files are 
contiguous you only have to find out where they start.

When I interfaced the CDAR504 to PC-ditto I, these items all had to be 
handled for MS/DOS.

The bottom line is that you need a heap of neat software to utilize as CDROM
player.  One way to get it is to buy an Atari CDAR 504.

There is still a reason to go with a SONY or Hitachi.  Multimedia.
This is where voice/music and data are intermixed on the CD ROM.  the Atari
unit cannot handle this at all!

Howard Johnson
ATT BELL LABS
att!lzsc!hcj
hcj@lzsc.att.com

stephen@oahu.cs.ucla.edu (Steve Whitney) (10/07/90)

>There is still a reason to go with a SONY or Hitachi.  Multimedia.
>This is where voice/music and data are intermixed on the CD ROM.  the Atari
>unit cannot handle this at all!

>Howard Johnson
>ATT BELL LABS
>att!lzsc!hcj
>hcj@lzsc.att.com

I was under the impression that the problem with handling the mixed audio/data
CDs in the Atari CD-ROM unit was just a software problem.

Is it?  If so, it will eventually be corrected as these discs become more
popular, I'm sure.

	--Steve

--
Steve Whitney   "It's never _really_ the last minute"       (())_-_(())
UCLA Comp. Sci. Grad. Student                                | (* *) | 
Internet: stephen@cs.ucla.edu              UCLA Bruin-->    {  \_@_/  }
GEnie:    S.WHITNEY                                           `-----'  

crouland@gmuvax2.gmu.edu (Chris Rouland) (10/07/90)

re: MGR by bellcore...
I am having some problems running MGR by bellcore. I am running it with MiNT
.06 and every time I attempt to open a window [even the first one], I get
a message 'Can't get a pty" can anyone help me with this? please reply in news
or email me...
crouland@gmuvax2.gmu.edu

ggreenbe@rodan.acs.syr.edu (Gerald Greenberg) (02/02/91)

A while back someone asked about the availability of cd-rom
players for the ST...Does anyone know if ATSpeed with work
with any CD-Rom drives?...If so, which ones?
Thanks,
Gerry
ggreenbe@rodan.acs.syr.edu
maxg@suvm (bitnet)