[MAME]

XOR WORLD (c) 1990 Gaelco

Memory Map:
-----------
0x000000-0x01ffff	ROM
0x200000-0x200001	Input #1
0x400000-0x400001	Input #2
0x600000-0x600001	DIPSW #1 + EEPROM read
0x800000-0x800001	Philips SAA1099P write register
0x800002-0x800003	Philips SAA1099P control register
0xa00008-0xa0000d	EEPROM write/ctrl
0xffc000-0xffc7ff	Screen		(8x8 tiles	32x32		(256x256))
0xffc800-0xffc87f	Sprite RAM
0xffc884-0xffffff	Work RAM

Interrupts:
	Level 2 INT updates the timer
	Level 6 INT drives the game

Unmapped addresses in the driver:

0xffc800-0xffc801	INT 2 ACK\Watchdog timer
0xffc802-0xffc803	INT 6 ACK/Watchdog timer

EEPROM chip: 93C46

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