Re: Feasibility? - 1541 Ultimate conop

Re: Feasibility? - 1541 Ultimate conop

From: Groepaz <>
Date: Fri, 14 Aug 2009 10:16:53 +0200
Message-Id: <>
On Freitag 14 August 2009, Justin wrote:
> While I agree that it would be a lot of work, the existing freezer is
> essentially doing a DMA swap every time you operate it.  It is not
> perfectly reliable but it does work the majority of the time and will
> likely be better with the 1.7 firmware.  

no it doesnt. it very much depends on what kind of software you are running. 
if you arent into games and geos but mostly watch demos - like i do - then 
you will experience a lot of crashing. the freezer doesnt use DMA at all btw 

> In terms of the delta in load 
> times, I think it would be far more dramatic.  For example, I was
> doing some benchmarking on my SX-64 after installing JiffyDOS, and the
> load times from a real floppy for SkyFox to get to its initial screen
> were several minutes, enabling JiffyDOS makes it noticeably faster,
> but the load time is still measured in minutes.   

you should simply try another crack then. i just picked a random one and there 
isnt even enough data on the disk that it could load for several minutes =P

> DMA would be a couple orders of magnitude faster.
> I also think that aside from the idea of a RAM snapshot, extending the
> image format so that diffs are calculated against it, allowing it to
> be reverted, makes sense as a separate feature.  It would make image
> management much more convenient, for example when building out a set
> of GEOS disk images or the like.  Just hitting revert from the freezer
> menu would be fantastic.

what about... simply making a copy of said disk image and leaving the original 


Programming is one of the most difficult branches of applied mathematics; the 
poorer mathematicians had better remain pure mathematicians. 
<Edsgar W. Dijkstra>

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Received on 2009-08-14 09:16:53

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