Hi Aleksandar.

thanks for pointing that out I was not aware of that.
I can fix it.

Regards,
Michael Rolnik

On Sat, Nov 30, 2019 at 6:29 PM Aleksandar Markovic <
aleksandar.m.mail@gmail.com> wrote:

>
>
> On Saturday, November 30, 2019, Aleksandar Markovic <
> aleksandar.m.mail@gmail.com> wrote:
>
>>
>>
>> On Wednesday, November 27, 2019, Michael Rolnik <mrolnik@gmail.com>
>> wrote:
>>
>> +
>>> +
>>> +/*
>>> + *  Performs the logical AND between the contents of register Rd and
>>> register
>>> + *  Rr and places the result in the destination register Rd.
>>> + */
>>> +static bool trans_AND(DisasContext *ctx, arg_AND *a)
>>> +{
>>> +    TCGv Rd = cpu_r[a->rd];
>>> +    TCGv Rr = cpu_r[a->rr];
>>> +    TCGv R = tcg_temp_new_i32();
>>> +
>>> +    /* op */
>>> +    tcg_gen_and_tl(R, Rd, Rr); /* Rd = Rd and Rr */
>>> +
>>> +    /* Vf */
>>> +    tcg_gen_movi_tl(cpu_Vf, 0); /* Vf = 0 */
>>> +
>>> +    /* Zf */
>>> +    tcg_gen_setcondi_tl(TCG_COND_EQ, cpu_Zf, R, 0); /* Zf = R == 0 */
>>> +
>>> +    gen_ZNSf(R);
>>> +
>>> +    /* R */
>>> +    tcg_gen_mov_tl(Rd, R);
>>> +
>>> +    tcg_temp_free_i32(R);
>>> +
>>> +    return true;
>>> +}
>>> +
>>> +
>>>
>>
>> According to specs:
>>
>>
>> http://ww1.microchip.com/downloads/en/devicedoc/atmel-42505-8-bit-avr-microcontrollers-attiny102-attiny104_datasheet.pdf
>>
>> ... the chips in question have cores with 16 GPRs (that correspond to
>> GPRs R16-R31 of more common AVR cores with 32 GPRs).
>>
>>
> There are more examples;
>
>
> http://ww1.microchip.com/downloads/en/DeviceDoc/atmel-8127-avr-8-bit-microcontroller-attiny4-attiny5-attiny9-attiny10_datasheet.pdf
>
> Also ATtiny20, ATtiny40.
>
> How do you handle such cores?
>>
>> I don't see here anything preventing usage of all 32 GPRs, resulting, of
>> course, in an inaccurate emulation.
>>
>> Thanks,
>> Aleksandar
>>
>

-- 
Best Regards,
Michael Rolnik