Re: Fast copy routine needed

From: silverdr_at_wfmh.org.pl
Date: Sat, 22 Aug 2015 22:20:57 +0200
Message-ID: <55D8D9A9.6040303@wfmh.org.pl>
On 2015-08-22 21:35, Per Olofsson wrote:
> On Sat, Aug 22, 2015, at 09:07 PM, Spiro Trikaliotis wrote:
>>
>> Additionally, in warp mode, no GCR decoding is done in the floppy. The
>> rationale is that the PC is much faster then the 6502. Note that noone
>> ever did calculations if it would be better to do some calculations on
>> the 6502 side in order to reduce the amount of bytes to be transferred.
> 
> Since lft managed to figure out how to decode GCR on the fly, there's
> really no reason to transfer raw GCR data anymore. The IEC bus is going
> to be the bottleneck, so sending fully decoded data should minimize
> transfer time.

I still tend to think of it as rather a proof of concept than a
"production ready" solution. Especially for parallel connected drives
where IEC is no longer the bottleneck.

-- 
SD!

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Received on 2015-08-22 21:00:07

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