Re: C64 & Amiga secon fire buttons

Thanks for the verification.
First controllers assembled and tested.
https://github.com/1c3d1v3r/Dogbone64

-Pasi

On Thu, 18 Jan 2024 at 20:02, <groepaz_at_gmx.net> wrote:

> Am Donnerstag, 18. Januar 2024, 18:44:49 CET schrieb Pasi Lassila:
> > Is the C64 second fire button POTX (pin) connected to 5V? Ie. the signal
> > floats normally and is connected to 5V via the fire button.
> > Does it need some large value pull-down resistor or does it really just
> > float?
>
> Yes, its really floating
>
> > And is Amiga the same except the fire button connects pin9 signal to GND?
>
> On the Amiga its just another Button, yes
>
> see http://wiki.icomp.de/w/images/7/73/JoystickMod.jpg (The 270Ohm
> Resistor is
> not strictly needed - its a safety measure for overcautious people)
>
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