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pollux: fixed sprite flip x and y and removed old comments [Roberto Zandona']
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@ -19,7 +19,6 @@ These games all run on different but similar hardware. A common thing that they
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all have is tilemaps hardcoded in ROM.
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TODO:
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- video driver is not optimized at all
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- port A of both of the YM2203 is constantly read and stored in memory -
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function unknown
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- bluehawk and flytiger main programs often write to the program ROM
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@ -35,8 +34,6 @@ TODO:
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regularly to the ROM area - 0x00 is written to 0x0003 and 0xF7 is
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written to 0x0004 - is this just a bug, or is there something
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connected there? Possibly a watchdog?
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Gulf Storm:
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- there seem to be some invisible enemies around the first bridge
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Primella:
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- does the game really support cocktail mode as service mode suggests?
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- are buttons 2 and 3 used as service mode suggests?
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@ -44,8 +41,6 @@ Pop Bingo
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- appears to combine 2 4bpp layers to make 1 8bpp layer, for now we just
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treat it as 1 8bpp layer and ignore the 2nd set of registers.
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- some unknown reads / writes
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Flying Tiger
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- layer2 palette bank
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***************************************************************************/
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@ -115,7 +110,8 @@ static ADDRESS_MAP_START( pollux_map, ADDRESS_SPACE_PROGRAM, 8 )
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AM_RANGE(0xf010, 0xf010) AM_WRITE(soundlatch_w)
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AM_RANGE(0xf018, 0xf01f) AM_WRITE(dooyong_bgscroll8_w)
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AM_RANGE(0xf020, 0xf027) AM_WRITE(dooyong_fgscroll8_w)
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AM_RANGE(0xf800, 0xffff) AM_RAM_WRITE(paletteram_xRRRRRGGGGGBBBBB_le_w) AM_BASE_GENERIC(paletteram)
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AM_RANGE(0xf800, 0xffff) AM_RAM_WRITE(paletteram_flytiger_w) AM_BASE(&paletteram_flytiger)
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// AM_RANGE(0xf800, 0xffff) AM_RAM_WRITE(paletteram_xRRRRRGGGGGBBBBB_le_w) AM_BASE_GENERIC(paletteram)
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ADDRESS_MAP_END
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static ADDRESS_MAP_START( gulfstrm_map, ADDRESS_SPACE_PROGRAM, 8 )
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@ -157,8 +157,10 @@ WRITE8_HANDLER( pollux_ctrl_w )
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/* bit 1 is used but unknown */
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/* bit 2 is continuously toggled (unknown) */
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/* bit 4 is used but unknown */
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flytiger_palette_bank = data & 0x02;
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}
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WRITE8_HANDLER( primella_ctrl_w )
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@ -411,20 +413,19 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
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height = (buffered_spriteram[offs+0x1c] & 0x70) >> 4;
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code &= ~height;
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flipx = buffered_spriteram[offs+0x1c] & 0x08;
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flipy = buffered_spriteram[offs+0x1c] & 0x04;
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if (pollux_extensions == 3)
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{
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/* bluehawk */
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sy += 6 - ((~buffered_spriteram[offs+0x1c] & 0x02) << 7);
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flipx = buffered_spriteram[offs+0x1c] & 0x08;
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flipy = buffered_spriteram[offs+0x1c] & 0x04;
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}
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if (pollux_extensions == 4)
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{
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/* flytiger */
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sy -=(buffered_spriteram[offs+0x1c] & 0x02) << 7;
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flipx = buffered_spriteram[offs+0x1c] & 0x08;
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flipy = buffered_spriteram[offs+0x1c] & 0x04;
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}
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}
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}
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