MAMEWorld Forums - Programming - Re: video tilemap problem

> hello ,
>
> this is my first try on the MAME emulator project.
> Board info :
> CPU : MC68000 8mhz
> Video : MC6845
> Audio : AY3-8912
>
> I have done for the moment :
> 1. mapping of the board
> 2. skeleton of the driver (software run, but still some i/o todo)
> 3. dump of ROM ,NVRAM, emulation of PAL
>
> currently , I am lost in the decoding of the video section
> VIDEO RAM work with 2 BYTES
> 1 ATTRIBUTE BYTE (color + bank select)
> 1 TILE BYTE
>
> there is a BYTESWAP at the output of ROM GFX plus
> a funny use of clock in the RASTER ROW.
>
> I have attached a DUMP of the videoram and the schematic
> if someone can help me.
>
> thanks
>
> Yves

Nice... haven't seen a Winning Touch machine in many years - they were once commonplace in Victoria Australia, almost every gaming venue/pub/hotel had one! The games we had down here were all 5- or 10-game multigame units rather than standalone games.