Re: Update 1541-IDE

From: Silver Dream ! (
Date: 2009-01-09 17:50:53

On 2009-01-09, at 14:15, wrote:

>> Again an update on my project. It still isn't running but at least I
>> know the cause of all my trouble. I never understood how the 1541
>> exactly handled the BAM and still don't :( For this reason I always
>> replaced the BAM routines by my own.
> Dear Ruud and the rest,
> I'm sorry for being so off-topic, and I appreciate the large amount  
> of hard
> work you put into the 1541-IDE-project, but I wonder if it wouldn't  
> be wiser

? - how do you define wisdom here?

> to
> try to make a sort of 8-sec-copy / nibbler hardware/interface for  
> the 1541 so
> you can transfer the disks fast from 1541 to PC and vice versa.

Aren't those available already? opencbm/x1541/uIEC/..

> All we need is a little AVR, most likely in the arduino style  
> (,
> a parallel cable on the 1541's side, the usual serial cable,  
> perhaps a bit of
> RAM and a transfer via USB from and to the PC.
> This would keep 1541 hardware modification to a minimum.

To my understanding that's not the point/challenge of Ruud's project.  
I dare to say: the opposite is - do all the modifications and still  
keep the compatibility level high.

> The AVR ought to behave like a c64 for the diskdrive, including the  
> timing
> critical handling of the fast parallel port routines such as being  
> used in 8
> sec copy, burst nibbler, etc. Granted, it will be hard to get it to  
> work
> because it has to be cycle-exact, but it is far from being  
> impossible. Ruud
> would be the ideal hardware-man for this, and if we take the  
> routines outta 8-
> sec-copy or similar, we simply do not have to twiddle with software  
> development
> too long.
> What do you guys think? Let me know.

Nice idea (even if already realised probably more than once in  
slightly different forms), why don't you go for it? Also (as  
Hársfalvi Levente wrote) - no offence intended!

I would prefer not to distract Ruud from doing things that haven't  
been done before and he has a chance to do it. Since those are not  
commercial projects, nobody is under Time To Market pressure and I am  
sure everyone (not excluding Ruud) gets more satisfaction from doing  
something complex, which nobody did before.

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