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bestleag: fix spriteram oob access

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This commit is contained in:
hap 2022-11-05 12:57:12 +01:00
parent ae0f665dec
commit e5cd19ce20
1 changed files with 10 additions and 12 deletions
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22
src/mame/jaleco/bestleag.cpp
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@ -142,7 +142,7 @@ Note: sprite chip is different than the other Big Striker sets and they
*/
void bestleag_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
uint16_t *spriteram16 = m_spriteram;
uint16_t *src = m_spriteram + 0x16/2;
/*
@ -150,18 +150,16 @@ void bestleag_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprec
*/
int offs;
for (offs = 0x16/2;offs < m_spriteram.bytes()/2;offs += 4)
for (int offs = 0; offs < 0x7f4; offs += 4)
{
int code = spriteram16[offs+3] & 0xfff;
int color = (spriteram16[offs+2] & 0xf000) >> 12;
int sx = (spriteram16[offs+2] & 0x1ff) - 20;
int sy = (0xff - (spriteram16[offs+0] & 0xff)) - 15;
int flipx = (spriteram16[offs+0] & 0x4000) >> 14;
int code = src[offs+3] & 0xfff;
int color = (src[offs+2] & 0xf000) >> 12;
int sx = (src[offs+2] & 0x1ff) - 20;
int sy = (0xff - (src[offs+0] & 0xff)) - 15;
int flipx = (src[offs+0] & 0x4000) >> 14;
/* Sprite list end code */
if(spriteram16[offs+0] & 0x2000)
if(src[offs+0] & 0x2000)
return;
/* it can change sprites color mask like the original set */
@ -457,8 +455,8 @@ ROM_START( bestleaw )
ROM_LOAD( "26_27c4001.u45", 0x180000, 0x80000, CRC(a82c905d) SHA1(b1c1098ad79eb66943bc362246983427d0263b6e) )
ROM_REGION( 0x080000, "gfx2", 0 ) /* 16x16x4 Sprites */
ROM_LOAD( "27_27c010.u86", 0x000000, 0x20000, CRC(a463422a) SHA1(a3b6efd1c57b0a3b0ce4ce734a9a9b79540c4136) )
ROM_LOAD( "28_27c010.u85", 0x020000, 0x20000, CRC(ebec74ed) SHA1(9a1620f4ca163470f5e567f650663ae368bdd3c1) )
ROM_LOAD( "27_27c010.u86", 0x000000, 0x20000, CRC(a463422a) SHA1(a3b6efd1c57b0a3b0ce4ce734a9a9b79540c4136) )
ROM_LOAD( "28_27c010.u85", 0x020000, 0x20000, CRC(ebec74ed) SHA1(9a1620f4ca163470f5e567f650663ae368bdd3c1) )
ROM_LOAD( "29_27c010.u84", 0x040000, 0x20000, CRC(7ea4e22d) SHA1(3c7f05dfd1c5889bfcbc14d08026e2a484870216) )
ROM_LOAD( "30_27c010.u83", 0x060000, 0x20000, CRC(283d9ba6) SHA1(6054853f76907a4a0f89ad5aa02dde9d3d4ff196) )