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Diffstat (limited to 'src/mame/drivers/spinb.c')
-rw-r--r--src/mame/drivers/spinb.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mame/drivers/spinb.c b/src/mame/drivers/spinb.c
index dfea8354bd7..d2e1bd26032 100644
--- a/src/mame/drivers/spinb.c
+++ b/src/mame/drivers/spinb.c
@@ -578,6 +578,7 @@ UINT32 spinb_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, c
UINT16 *p = &bitmap.pix16(sy++);
for(x = 0; x < 16; x++)
{
+ assert((ma + 0x200) > 0 && (ma + 0x200) < ARRAY_LENGTH(m_dmdram));
gfx = m_dmdram[ma+0x200];
gfx1 = m_dmdram[ma++];