App Note 910 and firmware

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Hi,
I am just wondering how we go about programming the avr that is used in the circuit. Do we need another programer for that?
On another thread this link was left,

http://www.avr.jpk.co.nz/pavr/pa...

It seems to be able to program itself if the firmware is updated.

I am just trying to decide which ISP I am going to build.

Thanks,
Ian

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Hi Ian,

I've built both the ISP serial port programmer (appnote 910) and the parallel port programmer which uses a single 74HCT244 buffer and a couple of other bits and pieces. The latter is by far the simplest to build. And yes you do need another programmer to program the firmware for the first.

Cheers Jim