Space Duel Memory Map Typed by Jess Askey 1.13.97 ------------------------------------------------------------------------- | | | Data | | | Address |R/W| 7 6 5 4 3 2 1 0 | Function | |-----------------------------------------------------------------------| | 0000-3FFF |R/W| D D D D D D D D | 1K Program RAM (RAM/0) | | | | | | | 0800 | R | D | 3KHz Input | | 0800 | R | D | Halt | | 0800 | R | D | Diagnostic Step | | 0800 | R | D | Self-Test | | 0800 | R | D | Slam Switch | | 0800 | R | D | Aux Coin | | 0800 | R | D | Left Coin | | 0800 | R | D | Right Coin | | | | | | | 0900 | R | D | Shield 1 | | 0900 | R | D | Fire 1 | | 0901 | R | D | Shields 2 | | 0901 | R | D | Fire 2 | | 0902 | R | D | Rotate Left 1 | | 0902 | R | D | Rotate Right 1 | | 0903 | R | D | Rotate Left 2 | | 0903 | R | D | Rotate Right 2 | | 0904 | R | D | Thrust 1 | | 0904 | R | D | Start | | 0905 | R | D | Thrust 2 | | 0905 | R | D | Option | | 0906 | R | D | Game Select | | 0906 | R | D | Option | | 0907 | R | D | Cabinet (0=cocktail) | | 0907 | R | D | Option | | | | | | | 0A00 | R | D D D D D D D D | EAROM Read | | | | | | | 0C00 | W | D | Invert Y | | 0C00 | W | D | Invert X | | 0C00 | W | D | Start LED | | 0C00 | W | D | Select LED | | 0C00 | W | D | Coin Lockout | | 0C00 | W | D | Left Coin Counter | | 0C00 | W | D | Right Coin Counter | | | | | | | 0C80 | W | | /VGGO | | 0D00 | W | | /WDCLR | | 0D80 | W | | /VGRST | | 0E00 | W | | /INTACK | | | | | | | 0E80 | W | D | EAROM Control - CS1 | | 0E80 | W | D | EAROM Control - C1 | | 0E80 | W | D | EAROM Control - C2 | | 0E80 | W | D | EAROM Control - CK | | | | | | | 0F00-0F3F | W | D D D D D D D D | EAROM Write | | | | | | | 1000-100F |R/W| D D D D D D D D | Pokey 1 | | 1400-140F |R/W| D D D D D D D D | Pokey 2 | | 2000-27FF |R/W| D D D D D D D D | Vector RAM (2K) | | 2800-3FFF | R | D D D D D D D D | Vector ROM (6K) | | 4000-87FF | R | D D D D D D D D | Program ROM (20K) | |----------------------------------------------------------------------------|