Re: [hatari-devel] DSP and HREQ

[Laurent Sallafranque <laurent.sallafranque@xxxxxxx>]

Actually, it doesn't run into the exception adress.
Something is missing somewhere ;)


Le 26/01/2015 23:02, Laurent Sallafranque a écrit :
> oops ;)
>
> For the DSP side, I propose :
>
> HSR        equ    $ffe9    ;Host Status Register
> HTX        equ    $ffeb    ;Host Transmit Register
>
>
>     ; START
>     org    p:$0
>     jmp     $40
>
>     org     p:$40
>
>     ; General code to initialise port B
>     movep    #>0,x:<<$fffe
>     movep    #$c00,x:<<$ffff
>     movep    #>1,x:<<$ffe0
>     movep    #>3,x:<<$ffe8        ; enable interrupts
>     andi    #$fc,mr
>
>     jclr    #1,x:<<HSR,*
>     move    a,x:HTX
>
> tst_loop:
>     jmp    tst_loop
>
>
>
> I think I have to set %11 to $ffe8 to enable interrupts.
> I'll test this under hatari first.
>
>
>
>
>
>
> Le 26/01/2015 23:00, Nicolas Pomarède a écrit :
> > Le 26/01/2015 22:48, Laurent Sallafranque a écrit :
> > > I'm trying to do the test you're asking.
> > > Is the cpu code OK for you ?
> > > (I'm starting the DSP code now)
> >
> > Hi
> >
> > I think you copied/pasted twice, your asm part is doubled :)
> >
> > Apart from that I think it should work with the appropriate small 
> > piece of dsp code to transmit 1 byte in the low dsp word and trigger 
> > hreq at $ffa202.
> >
> > But I never really coded for the dsp, so you or some other people 
> > here certainly know better than me :)
> >
> >
> > Nicolas