ABC editor "PROG Delay" question

Avoid parallel port based programmers, especially the ones that require "tweaked" software delay routines. You are asking for a world of trouble, especially with todays fast modern PCs and O/S's that no longer directly support legacy ports. Get yourself a decent serial or USB based programmer and you'll sleep better at night.

Although in this case make sure your programming lead from the parallel port is as short as possible.

Dave :)

I never understand why people have all these crazy programmers for atmel... just get the 30$ ISP and use the the miso mosi reset and sck lines... isp plugs right into a serial port.

If it is programming ok but failing verify, try to download the image and compare it to the original. If its complete random then thats your problem, if only some bytes seem to be random you have a clocking problem, atmels are pretty bad about this, try some better capacitors across all of the power pins on the mcu

I use a 3m parallel cable... length doesn't seem to be an issue.

it's probably the software. or possibly the hardware. my programmer is the atmel parallel one (and I did see a site where someone had published the schematic), and the software either atmel's stuff (windows) or avrisp (linux)

Bye. Jasen

A lot can change depending on the driving impedances - strength of pullups etc. Just because it works for you doesn't mean it'll work for someone else. I've had the same problem with the MSP430 JFET.

Thanks...I work fine with "BASCOM-AVR" finally.

the STK100 ISP was parallel port.. so history would be part of it.

Bye. Jasen