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Fixed TRIG3 register handling in GTIA for Atari XL/XE [Mariusz Wojcieszek]

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(change for MESS).
This commit is contained in:
mariuszw1 2009-10-13 19:14:14 +00:00
parent 65966de39f
commit fd9f301339
1 changed files with 6 additions and 3 deletions
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9
src/mame/video/atari.c
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@ -1512,9 +1512,12 @@ static void generic_atari_interrupt(running_machine *machine, void (*handle_keyb
gtia.r.but[i] &= (button_port >> i) & 1;
}
/* specify buttons not relevant to this Atari variant */
for (i = button_count; i < 4; i++)
gtia.r.but[i] = 1;
/* button registers for xl/xe */
if (button_count == 2)
{
gtia.r.but[2] = 1; /* not used on xl/xe */
gtia.r.but[3] = 0; /* 1 if external cartridge is inserted */
}
handle_keyboard(machine);