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From: sjl@ecs.OZ (Stephen Lamb)
Newsgroups: net.micro.amiga
Subject: Re: AmigaDos...  commodore 1541 ?? come on!
Message-ID: <155@ecs.OZ>
Date: Tue, 13-May-86 02:55:47 EDT
Article-I.D.: ecs.155
Posted: Tue May 13 02:55:47 1986
Date-Received: Thu, 15-May-86 06:14:04 EDT
References: <8605102206.AA06376@pavepaws>
Organization: Email Computer Systems, Melbourne, Australia
Lines: 38

In article <8605102206.AA06376@pavepaws>, dillon@PAVEPAWS.BERKELEY.EDU (Matt Dillon) writes:
> 
> 	Please, let's hear no more talk on that particular drive, it gives
> me a headache.  In any case, the 1541 doesn't have multiple directories.
> In fact, the 1541 uses the same file format as the 2031, and 4040 (older
> drives).  However, the techonological leap in the design of the 1541 is,
> well.... backwards.  The 1541 is 3+ times slower than its predecessors.
> 
> 	But then again, the 5 Mbyte IEEE hard disk  for the Pet, C64, etc...
> only has one directory also.
> 
> 	Let me say then, that it's a huge relief working with the Amiga,
> and although it has problems (EVERYTHING ever made has problems except my
> toothbrush), it's several order's of magnitude better than anything else
> on the micro-computer market except, possibly, the IBM.
> 
> 					-Matt
> 
> * The commodore 4040 disk drive was more powerful in itself than the 
> computers it was connected to, and still managed to be slower than
> just about everything else on the market.

It is no slower than the 8050 or the 8250.
This device reads the disk surface at 40+ Kbytes/sec and the IEEE routines
transfer it at 1.2 Kbytes/sec.  This can be uprated to 30+ Kbytes/sec,
I have done it - look at the 9090/60 Backup system that I wrote, the
entire 7.5 Mbytes is backed up to floppy disk in <30 min.  This
includes hard disk read, floppy disk write and verify, and two fast
IEEE handshakes for EVERY sector on the disk. (29376)

Yes, I agree the 1541 is slow, but then again, it is only meant for
home computer type installations, not UNIX or the like !!

Let's keep things in perspective, huh?

DISCLAIMER : The stuff added by me is only my opinion, based on my
	     experience as a full time programmer on commodore
	     hardware.