Telephone Mahjong © 1989 Nichibutsu.
Girls that can talk on the phone AND play mahjong at the same time!
Main CPU : Zilog Z80 (@ 5 Mhz)
Sound Chips : YM3812 (@ 2.5 Mhz), DAC (@ 2.5 Mhz)
Player : 2
Control : 4-way joystick
Buttons : 2
Released in January 1989.
Game's ROM.