Because the Arduino 1.8.5 did not accept the fuse settings in the boards.txt included in the attiny13 core from Core13 download | SourceForge.net , I decided to try MicroCode. No problem setting the fuses: 9.6Mhz, B.O.D 1.8v on the attiny13a. Also compiling the sketch worked without errors. Howev…

[Solved]Attiny13 MicroCore analog read 8 bit and wdt problem

Topic		Replies	Views
ATtiny 13 Core disponibile !!! Generale	47	12762	May 7, 2021
AT Tiny 13 + Microcore issue Programming	8	1331	May 5, 2021
core13: An Arduino core for the Attiny13 testers wanted 3rd Party Boards	408	196826	May 6, 2021
MicroCore - An optimized and efficient Arduino core for ATtiny13 3rd Party Boards	39	20966	May 6, 2021
help with programming ATTINY13a 3rd Party Boards	49	27355	May 6, 2021