[Apr/18/98]

Hexa
Dr.Korea, 1990.

CPU : Z80

Sound : missing chip (2x20 pins)

ROMS:

HEXA.17  8x8 tiles, bit 0
HEXA.18  8x8 tiles, bit 1
HEXA.19  8x8 tiles, bit 2

HEXA.20  Z80 program
HEXA.21  Z80 program

-

[MAME]

HEXA

Memory map (prelim)
0000 7fff ROM
8000 bfff bank switch rom space??
c000 c7ff RAM
e000 e7ff video ram
e800-efff unused RAM

read:
d001      AY8910 read
f000      ???????

write:
d000      AY8910 control
d001      AY8910 write
d008      bit0/1 = flip screen x/y
          bit 4 = ROM bank??
          bit 5 = char bank
		  other bits????????
d010      watchdog reset, or IRQ acknowledge, or both
f000      ????????

NOTES:
        Needs High score save and load (i think the high score is stored
                around 0xc709)

-