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Re: [PATCH 6/7] mac_via: fix 60Hz VIA1 timer interval


From: Laurent Vivier
Subject: Re: [PATCH 6/7] mac_via: fix 60Hz VIA1 timer interval
Date: Wed, 10 Mar 2021 09:47:18 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.0

Le 10/03/2021 à 09:09, Mark Cave-Ayland a écrit :
> The 60Hz timer is initialised using timer_new_ns() meaning that the timer
> interval should be measured in ns, and therefore its period is a thousand
> times too short.
> 
> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> ---
>  hw/misc/mac_via.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/misc/mac_via.c b/hw/misc/mac_via.c
> index f994fefa7c..c6e1552a59 100644
> --- a/hw/misc/mac_via.c
> +++ b/hw/misc/mac_via.c
> @@ -302,8 +302,8 @@ static void via1_sixty_hz_update(MOS6522Q800VIA1State 
> *v1s)
>      MOS6522State *s = MOS6522(v1s);
>  
>      /* 60 Hz irq */
> -    v1s->next_sixty_hz = (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 16630) /
> -                          16630 * 16630;
> +    v1s->next_sixty_hz = (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 16630000) /
> +                          16630000 * 16630000;
>  
>      if (s->ier & VIA1_IRQ_60HZ) {
>          timer_mod(v1s->sixty_hz_timer, v1s->next_sixty_hz);
> 

Reviewed-by: Laurent Vivier <laurent@vivier.Eu>



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