Re: Burst vs. JiffyDOS

From: Nate Lawson <>
Date: Mon, 13 Feb 2012 08:11:59 -0800
Message-Id: <>
On Feb 12, 2012, at 10:58 PM, Baltissen, GJPAA (Ruud) wrote:

> Hallo allemaal,
> Nate wrote:
>> C128/1571 burst mode is slow. It's about 3.5 KB/sec read,
>> no faster for writes.
>> The hardware is capable of much more though. ....
> I'm very interested in this item. reason: a possible 1581IDE.
> [...]
> The main reason to target the 1581 is the burst mode. But if it is
> slower then JiffyDOS under normal conditions, I tend to stay to the 1541
> as base for two simple reasons:
> - I have enough 1541s and only a few 1581s.
> - I know the 1541 much much better than the 1581 and already have done
> some work on it.
> Your comment please.

Thomas Winkler (diddl on forums) has already implemented a fast transfer mode using the SRQ line that 1581s have. He calls it S3. The nibtools SRQ burst mode uses ATN for handshaking and thus only works with one drive on the bus. His version apparently works with multiple drives, although I haven't tested it yet.

The S3 code has not yet been integrated with xum1541 due to my limited time.


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Received on 2012-02-13 17:00:04

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