Tetris (bootleg set 2)

EMU Infos
dumper	f205v
date	11/03/2018
emulator	MAME 0.79u1
dev	Kevin Eshbach

PCB Infos
name	atetrisb2 on Arcade Database
description	Tetris (bootleg set 2)
year	1988
manufacturer

Technical references

CPUs

QTY	Type	clock	position	function
1x	MPS6502		main PCB	8-bit Microprocessor - main
3x	SN76489AN		sub PCB	Digital Complex Sound Generator - sound
1x	LM324N		main PCB	Quad Operational Amplifier - sound
1x	TDA2002		main PCB	Audio Amplifier - sound
1x	oscillator	14.31818	main PCB

ROMs

QTY	Type	position	status
2x	AM27512	main PCB 1,2	dumped
1x	M3-7603-5	sub PCB PROM1	dumped

RAMs

QTY	Type	position
1x	CY7C128-55PC	main PCB
1x	DS2064	main PCB

PLDs

QTY	Type	position	status
2x	TIBPAL16R4-25CN	sub PCB PAL1, PAL3	read protected
3x	TIBPAL16L8-25CN	sub PCB PAL2, main PCB PAL4, PAL5	read protected

Others

1x 28x2 JAMMA edge connector
1x trimmer (volume)
1x 8 DIP switches bank (SW1)

Notes

all PCBs are marked: "LC" on component side (in Italian LC means "Lato Componenti" which translates to "Components Side")
all PCBs are marked: "LS" on solder side (in Italian LS means "Lato Saldature" which translates to "Solder Side")