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gladiatr.cpp: Use std::swap_ranges for descrambling GFX ROMs

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This commit is contained in:
AJR 2022-11-05 12:37:41 -04:00
parent 8835e5ad9a
commit 0254ce5fd2
2 changed files with 7 additions and 15 deletions
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21
src/mame/taito/gladiatr.cpp
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@ -202,6 +202,8 @@ TODO:
#include "screen.h"
#include "speaker.h"
#include <algorithm>
MACHINE_RESET_MEMBER(gladiatr_state,gladiator)
{
@ -1368,15 +1370,6 @@ ROM_START( gcastle )
ROM_END
void gladiatr_state::swap_block(u8 *src1, u8 *src2, int len)
{
for (int i = 0; i < len; i++)
{
using std::swap;
swap(src1[i], src2[i]);
}
}
void gladiatr_state::init_gladiatr()
{
u8 *rom = memregion("gfx2")->base();
@ -1390,7 +1383,7 @@ void gladiatr_state::init_gladiatr()
}
}
// sort data
swap_block(rom + 0x14000, rom + 0x18000, 0x4000);
std::swap_ranges(rom + 0x14000, rom + 0x18000, rom + 0x18000);
rom = memregion("gfx3")->base();
@ -1404,10 +1397,10 @@ void gladiatr_state::init_gladiatr()
}
}
// sort data
swap_block(rom + 0x1a000, rom + 0x1c000, 0x2000);
swap_block(rom + 0x22000, rom + 0x28000, 0x2000);
swap_block(rom + 0x26000, rom + 0x2c000, 0x2000);
swap_block(rom + 0x24000, rom + 0x28000, 0x4000);
std::swap_ranges(rom + 0x1a000, rom + 0x1c000, rom + 0x1c000);
std::swap_ranges(rom + 0x22000, rom + 0x24000, rom + 0x28000);
std::swap_ranges(rom + 0x26000, rom + 0x28000, rom + 0x2c000);
std::swap_ranges(rom + 0x24000, rom + 0x28000, rom + 0x28000);
membank("bank1")->configure_entries(0, 2, memregion("maincpu")->base() + 0x10000, 0x6000);
membank("bank2")->configure_entries(0, 2, memregion("audiocpu")->base() + 0x10000, 0xc000);

1
src/mame/taito/gladiatr.h
View File

@ -146,7 +146,6 @@ private:
DECLARE_VIDEO_START(gladiatr);
uint32_t screen_update_gladiatr(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
static void swap_block(u8 *src1, u8 *src2, int len);
void gladiatr_cpu1_io(address_map &map);
void gladiatr_cpu1_map(address_map &map);