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Re: [avr-chat] DAPA programming cable

From: Joerg Wunsch
Subject: Re: [avr-chat] DAPA programming cable
Date: Tue, 16 Oct 2012 22:23:21 +0200 (MET DST)

=?UTF-8?B?IkluZy4gRGFuaWVsIFJvenNuecOzIg==?= <address@hidden> wrote:

>> 3) If you choose to flip fuses so that the chip goes at, say, 10 or
>> 20 megahertz, it will run so fast that the parallel port can't keep
>> up with it.  So it's only for AVRs running on the internal
>> oscillator in slow mode at about 1 megahertz.

> Are you sure? I regularly use a parallel cable to program my devices
> and that never happened.

Agreed, you can (at least in theory) use ISP as slowly as you like.

Richard Cavell wrote:

>> 1) You need to supply your own voltage to the chip. USB programmers
>> can generally supply +5 volts from the USB power but DAPA won't do
>> that.

Note that the AVRISPmkII doesn't supply power either, nor does the
JTAGICEmkII (or JTAGICE3, for that matter).
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)

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