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Fix Mametesters bug arkanoid061gre - MCU reset line was not hooked up.

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arkanoid: When you press the tilt button the "tilt" text will show for a short while and then it says "bad hardware".
This commit is contained in:
Bryan McPhail 2008-01-05 15:01:57 +00:00
parent a65bcf3fec
commit 2dd013188c
2 changed files with 10 additions and 3 deletions
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2
src/mame/drivers/arkanoid.c
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@ -1,6 +1,6 @@
/***************************************************************************
Arkanoid driver (Preliminary)
Arkanoid driver
Japanese version support cocktail mode (DSW #7), the others don't.

11
src/mame/video/arkanoid.c
View File

@ -36,7 +36,7 @@ WRITE8_HANDLER( arkanoid_d008_w )
}
/* bit 2 selects the input paddle */
arkanoid_paddle_select = data & 0x04;
arkanoid_paddle_select = data & 0x04;
/* bit 3 is coin lockout (but not the service coin) */
coin_lockout_w(0, !(data & 0x08));
@ -60,7 +60,14 @@ WRITE8_HANDLER( arkanoid_d008_w )
tilemap_mark_all_tiles_dirty(bg_tilemap);
}
/* bit 7 is unknown */
/* BM: bit 7 is suspected to be MCU reset, the evidence for this is that
the games tilt mode reset sequence shows the main CPU must be able to
directly control the reset line of the MCU, else the game will crash
leaving the tilt screen (as the MCU is now out of sync with main CPU
which resets itself). This bit is the likely candidate as it is flipped
early in bootup just prior to accessing the MCU for the first time. */
if (cpu_gettotalcpu()>1) // Bootlegs don't have the MCU but still set this bit
cpunum_set_input_line(1, INPUT_LINE_RESET, (data & 0x80) ? CLEAR_LINE : ASSERT_LINE);
}
static TILE_GET_INFO( get_bg_tile_info )