Planet Probe -  unknown manufacture  -  Copyright 1985
Game probably programmed by same people behind some Kyugo/Orca/Komax games (see hiscore table)

Upper board marked DVL/A-V
Bottom Bord DVL/B-V

The pcb seems a bootleg/prototype:
On the upper board there are some pads for jumpers , some empty spaces left unpopulated for additional TTLs and an XTAL.
All 5 sockets for 2732 eproms were modified to accept 2764 eproms.
The AY8910 pin 26 (TEST 2) is grounded with a flying wire

Upper board chips:
5x 2764 eproms
1x 2128 static ram (2k ram)
2x z80B
1x AY8910
2x 8 positions dipswitches

Bottom Board chips:
5x 2764 eproms
2x 2128 static ram (2kx8 ram)
3x 2114 static ram (1k x 4)
4x 93422 DRAM (256x4 dram)
1x 6301 PROM (probably used for background ?)
3x 82s129 Colour PROMS (connected to resistors) 

Clocks measured:

Main XTAL 18.432mhz
2x z80 : 18.432 / 6 
AY8910 : 18.432 / 12
Vsync : 60.58hz



PCB provided by Alberto Grego
PCB dumped by Corrado Tomaselli on 01.11.2012