|[hatari-devel] MFP Interrupt Regression|
[ Thread Index |
| More lists.tuxfamily.org/hatari-devel Archives
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
( line 314 in hatari/src/psg.c )
/* Seems like we want to print something... */
/* 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.