core13: An Arduino core for the Attiny13 *testers wanted*

Using Arduino Microcontrollers
194

smeezekitty,

Thanks again from your support!
To answer you question. There is a place to solder a jumper but after comparing it with the opensource schematic and actual connection on the PCB I think it is not the Slow SCK settings.

I diverted to an old Arduino Diecimila with atmega328p Installed

and upload worked like a charm! Many thanks again for sharing your library!!!

Greetings from Japan!