RUMBA LUMBER by TAITO (1984)

Hardware similar to Fairyland Story except for the video board.
Wiring is the classic Taito one.
All clocks has been verified using a frequency counter.
Hardware is capable of playing samples (TTL circuit)


SOUND BOARD J1100022A / K1100066A

Xtal: 8mhz 
Z80 NEC D780C-1 running at 8/2 = 4mhz
YM2149 running at 8/4 = 2mhz  pin 26 high
OKI M5232 running at 8/4 = 2mhz
2764 EPROM A23-08-1
2764 EPROM A23-09
2764 EPROM A23-10

CPU BOARD J1100024A / K1100065A

Xtal 8mhz
Z80 NEC D780C-1 running at 8/2 = 4mhz
MCU A23-11 MC68705P5S running at 18.432/6 = 3.072mhz
27128 EPROM A23-01-1
27128 EPROM A23-02-1
27128 EPROM A23-03-1

VIDEO BOARD J1100023A / K1100064A

xtal: 18.432mhz
2764 EPROM A23-04
2764 EPROM A23-05
2764 EPROM A23-06 (I cannot get a constant read,a couple of bytes differ everytime)
2764 EPROM A23-07

VSYNC = 60.55hz

Dumped by Corrado Tomaselli on 9/12/2010