Alone Shettle Crew

EMU Infos
dumper	f205v
date	16/04/2024
emulator	MAME 0.265
dev	Osso

PCB Infos
name	shettle on Arcade Database
description	Alone Shettle Crew
year	1984-10
manufacturer	New Digimatic

Technical references

CPUs

QTY	Type	clock	position	function
2x	D780C		main PCB	8-bit Microprocessor - main / sound
1x	MB3712	-	main PCB	Audio Amplifier - sound
1x	oscillator	18.432	sub PCB 8a
1x	unknown (DIP24-600mil)		main PCB	soldered, scratched, marked "Z4"

ROMs

QTY	Type	position	status
5x	M5L2764	main PCB 1,2,3,4,d	dumped
1x	HN462732G	sub PCB 0.5d	dumped
1x	M5L2764	sub PCB e.4r	dumped
1x	6331-1n	main PCB 1	dumped
2x	MB7052	main PCB 2,3	dumped
1x	6331-1n	sub PCB 4.2f	dumped
3x	N82S129N	sub PCB 5.3r, 6.4h, 7.7b	dumped

RAMs

QTY	Type	position
2x	MBM2148L-55	main PCB
1x	M58725P	main PCB
2x	MBM2148L-55	sub PCB 3k, 4k
5x	M5L2114LP-3	sub PCB 6k, 6l, 6m, 6n, 6p
1x	M58725P	sub PCB 5j

PLDs

QTY	Type	position	status
0x

Others

1x 18x2 edge connector (main PCB)
1x 4 legs connector (sub PCB 1c)
1x 50 pins flat cable connector from main PCB to sub PCB
1x trimmer (volume)(main PCB)
2x 8 DIP switches banks(main PCB)

Notes

main PCB is marked: "PC-082A" on component side
sub PCB is marked: "MADE IN JAPAN", "SCO-102B(C)1983 GRC" on component side
main PCB is labelled: "NEW DIGIMATIC GARANZIA 6 MESI DATA OTTOBRE 1984" on component side

Z4 wiring:
                  DIP24-600mil
                +------\/-----+
                |    ZZZZZ    |   
 pin 37 @ D780C |1       Z  24| Vcc
 pin 36 @ D780C |2      Z   23| not connected
 pin 35 @ D780C |3     Z    22| not connected
 pin 34 @ D780C |4    Z     21| pin  6 @ M74LS32P
 pin 33 @ D780C |5   Z      20| pin  3 @ M74LS32P
 pin 32 @ D780C |6   ZZZZZ  19| not connected
 pin 31 @ D780C |7          18| not connected
 pin 30 @ D780C |8   4   4  17| pin  8 @ M74LS244P
 pin 14 @ D780C |9   4   4  16| pin  6 @ M74LS244P
 pin 15 @ D780C |10  4   4  15| not connected
 pin 12 @ D780C |11  44444  14| pin  2 @ M74LS244P
            GND |12      4  13| pin 11 @ M74LS244P
                |        4    |   
                +-------------+

update 20240525: added wiring for Z4