Hi Geert,
> cpu: cpu {
> device_type = "cpu";
> compatible = "cbm,6510", "mos,6502";
I don't think mos,6502 will work. You will lose the data port at $00/$01
and can't configure memory then.
> clock-frequency = <985000>;
Can't this be derived from some other clock?
> sid: sound@d400 {
> reg = <0xd400 0x400>;
> compatible = "cbm,6581", "cbm,sid";
> };
Actually, this file should be a DTSI and VIC, SID, and CIA would need to
be defined in the DTS file. Different C64 models have different versions
of these chips.
> iec {
> compatible = "cbm,c64-iec-bus";
>
> cbm,atn-gpios = <&cia2 3 GPIO_ACTIVE_LOW>;
> cbm,clock-out-gpios = <&cia2 4 GPIO_ACTIVE_LOW>;
> cbm,data-out-gpios = <&cia2 5 GPIO_ACTIVE_LOW>;
> cbm,clock-in-gpios = <&cia2 6 GPIO_ACTIVE_LOW>;
> cbm,data-in-gpios = <&cia2 7 GPIO_ACTIVE_LOW>;
> };
The user port has lots of GPIOs, too :D And the tape port...
And you found out that CIA2 uses NMI already. I spotted that, too.
Geez, since when do I have too much time ;)
Happy hacking,
Wolfram
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