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Preliminary simulation of text layer protection in Chouji Meikyuu Legion [Tomasz Slanina]

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This commit is contained in:
Tomasz Slanina 2010-12-30 17:23:02 +00:00
parent 5025452bd1
commit 41fbb1963c
2 changed files with 110 additions and 5 deletions
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1
src/mame/drivers/armedf.c
View File

@ -1166,7 +1166,6 @@ ROM_START( legiono )
ROM_LOAD( "legion.1j", 0x010000, 0x010000, CRC(bae220c8) SHA1(392ae0fb0351dcad7b0e8e0ed4a1dc6e07f493df) )
/* should lg7.bin be loaded here too? The ROM wasn't included in this set */
ROM_END
ROM_START( terraf )

112
src/mame/video/armedf.c
View File

@ -43,6 +43,29 @@ static TILE_GET_INFO( get_tx_tile_info )
0);
}
static TILE_GET_INFO( get_legion_tx_tile_info )
{
armedf_state *state = machine->driver_data<armedf_state>();
int tile_number = state->text_videoram[tile_index] & 0xff;
if(tile_index<0x10) tile_number=0x20;
int attributes;
if (state->scroll_type == 1)
attributes = state->text_videoram[tile_index + 0x800] & 0xff;
else
attributes = state->text_videoram[tile_index + 0x400] & 0xff;
SET_TILE_INFO(
0,
tile_number + 256 * (attributes & 0x3),
attributes >> 4,
0);
}
static TILE_GET_INFO( get_fg_tile_info )
{
armedf_state *state = machine->driver_data<armedf_state>();
@ -97,6 +120,9 @@ VIDEO_START( armedf )
break;
case 3: /* legion */
state->tx_tilemap = tilemap_create(machine, get_legion_tx_tile_info, armedf_scan_type3, 8, 8, 64, 32);
break;
case 6: /* legiono */
state->tx_tilemap = tilemap_create(machine, get_tx_tile_info, armedf_scan_type3, 8, 8, 64, 32);
break;
@ -128,15 +154,16 @@ WRITE16_HANDLER( armedf_text_videoram_w )
tilemap_mark_tile_dirty(state->tx_tilemap, offset & 0x7ff);
else
tilemap_mark_tile_dirty(state->tx_tilemap, offset & 0xbff);
/* if (offset < 0x10)
/*
if (offset < 0x10)
logerror("%04x %04x %04x %04x %04x %04x %04x %04x-%04x %04x %04x %04x %04x %04x %04x %04x (%04x)\n",
state->text_videoram[0], state->text_videoram[1], state->text_videoram[2],
state->text_videoram[3], state->text_videoram[4], state->text_videoram[5],
state->text_videoram[6], state->text_videoram[7], state->text_videoram[8],
state->text_videoram[9], state->text_videoram[10], state->text_videoram[11],
state->text_videoram[12], state->text_videoram[13], state->text_videoram[14],
state->text_videoram[15], offset);*/
state->text_videoram[15], offset);
*/
}
WRITE16_HANDLER( armedf_fg_videoram_w )
@ -256,8 +283,54 @@ static void draw_sprites( running_machine *machine, bitmap_t *bitmap, const rect
}
}
static void copy_textmap(running_machine *machine, int index)
{
/*
(not simulated)
1st half of the MCU ROM contains various strings and
gfx elements (copied by MCU to textram)
(partially simulated)
2nd half of the MCu external ROM contains text tilemaps:
4 - title screen
5 - ??? - should be (when comapred with legiono set) displayed(? inivisble? different prority?) during game
6 - test mode screen
7 - portraits (title)
*/
armedf_state *state = machine->driver_data<armedf_state>();
UINT8 * data = (UINT8 *)memory_region(machine, "gfx5");
for(int i=0;i<0x400;++i)
{
if(i<0x10) continue;
if(index>0)
{
int tile=data[0x800*index+i];
int bank=data[0x800*index+i+0x400]&3;
if( (tile|(bank<<8))!=0x20)
{
state->text_videoram[i]=tile;
state->text_videoram[i+0x400]=data[0x800*index+i+0x400];
}
}
else
{
//clear - not used
state->text_videoram[i]=0x20;
state->text_videoram[i+0x400]=0;
}
}
tilemap_mark_all_tiles_dirty(state->tx_tilemap);
}
VIDEO_UPDATE( armedf )
{
armedf_state *state = screen->machine->driver_data<armedf_state>();
@ -363,6 +436,39 @@ VIDEO_UPDATE( armedf )
if (sprite_enable)
draw_sprites(screen->machine, bitmap, cliprect, 0);
if(state->scroll_type == 3) /* legion */
{
/* Hack to clear the garbage draw in place of "GAME OVER" after
continue. Game code copies there '@ABCDEFG' (from location $13fad),
to fix tilemap (index 5) currently not displayed in game
(visible in legiono (unprotected) set - it covers the playfield,
but should be not visible? or draw under the tilemaps)
*/
if( (state->text_videoram[0]&0xff) == 0x0e &&
(state->text_videoram[0x40e/2]&0xff)==' ' &&
(state->text_videoram[0x410/2]&0xff)=='@' &&
(state->text_videoram[0x412/2]&0xff)=='A')
{
for(int i=0;i<16;++i)
{
state->text_videoram[0x410/2+i]=0x20;
state->text_videoram[0x410/2+i+0x400]=0;
}
tilemap_mark_all_tiles_dirty(state->tx_tilemap);
}
switch(state->text_videoram[1]&0xff)
{
case 1: copy_textmap(screen->machine, 4); break; /* title screen */
case 6: copy_textmap(screen->machine, 7); break; /* portraits on title screen */
/* display tilemap 5 during game .. but it makes the game unplayable */
}
}
return 0;
}