Re: [hatari-devel] MFP Interrupt Regression

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 17/06/2013 02:36, David Savinkoff a écrit :
> Hi Nicolas,
>
> In hatari/src/psg.c :: PSG_Set_DataRegister()
> A GPIP0 Printer BUSY interrupt is initiated because a printer
> connected to the parallel printer port toggles the BUSY line.
> This can be used to generate an interrupt on a Atari ST.
>
> This feature worked in hatari 1.6.2 and earlier (since 2008)
>
> The MFP code has recently been changed and these interrupts
> stopped working.
>
> ( line 314 in hatari/src/psg.c )
> /* Seems like we want to print something... */
> Printer_TransferByteTo(PSGRegisters[PSG_REG_IO_PORTB]);
> /* Initiate a possible GPIP0 Printer BUSY interrupt */
> MFP_InputOnChannel ( MFP_INT_GPIP0 , 0 );  *** NOT WORKING ***
>
> Note GPIP1 Falcon ACK interrupt (3 lines further down)
> is done, additionally, for the same reason.
>
> David

Hello

do you have a scenario I could use to see what's happening ?

As MFP_InputOnChannel() is used and works in other parts, I don't 
immediatly see what could be wrong.

Nicolas