oke than i did it correct ,wierd the text file says something else ,wil test some games etc see if it works 😀
Matze79's Tandy Nano v1.1
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Notes
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1.SPK output is used for connecting the system speaker.
2.The potentiometer is used for settting the output volume,
both for the internal mono Speaker-out (SPK) and the external
Stereo-out (J1).
3.Program Atmel TINY13A-PU with TINY13.HEX loaded as binary file.
4.Securing the custom slot bracket with the stereo jeck screw nut
may require an additional bigger metal ring.
5.The potentiometer must be set at ~30% output to approximately
match the input level of a sound card (MIC-In or Line-In).
See photo OUTPUT.JPG.
6.JP1 jumper selects I/O address for the card:
XT: 1-2 -> 0C0h
AT: 2-3 -> 2C0h
AT systems may not work when 0C0h address is used.
When using 2C0h, a port redirection utility is required.
See TNDY tool.