Gryzor (Contra) - Japanese version bootleg '712-47'  Dumped by arcade@zws.com
=============================================================================
This ROM set is taken from a Gryzor (Contra) bootleg board, with Japanese ROM
and an engraved model number '712-47'. This is a single large two-layer PCB
with NO custom components on it (there doesn't even seem to be a PAL, it's
all discrete logic). The game runs on two MC68B09EP processors; audio output
is provided by one YM2151 and one YM3012 chip.

If you have hardware questions about this board for repair or emulation,
contact arcade@zws.com. I do not have schematics but will provide whatever
assistance I can.

File       Size  Loc  Purpose
======================================
G-1.ROM    27256 P5   Audio CPU code
G-2.ROM    27512 H2   Main CPU code #1
G-3.ROM    27512 J2   Main CPU code #2
G-4.ROM    27512 A17  Graphics #1
G-5.ROM    27512 C17  Graphics #2
G-6.ROM    27512 D17  Graphics #3
G-7.ROM    27512 F17  Graphics #4
G-8.ROM    27512 H17  Graphics #5
G-9.ROM    27512 J17  Graphics #6
G-10.ROM   27512 K17  Graphics #7
G-11.ROM   27512 L17  Graphics #8
G-12.ROM   27512 M17  Graphics #9
G-13.ROM   27512 P17  Graphics #10
G-14.ROM   27512 Q17  Graphics #11
G-15.ROM   27512 R17  Graphics #12
G-16.ROM   27512 T17  Graphics #13
G-17.ROM   27512 V17  Graphics #14
G-18.ROM   27512 W17  Graphics #15

