Up for auction is a Shinko Sangyo YS-6464A, a Japanese Z80 single board computer/trainer built around the Sharp LH0080A Z80-compatible CPU. Information on this model is limited, but Japanese sources identify it as one of many small single-board microcomputer trainers that was sold through hobbyist microcomputer/electronics magazines throughout the 80s.The newest IC date code I found on the board is from the first week of 1989.

This computer was imported about five years ago. I'm not completely sure whether this specific unit was originally sold as a kit or factory-assembled. Various blogs state this was available as kit which confirms why the included manual has a page where the previous owner cut out the key legends. However, the soldering on the underside of this board is clean and looks professionally done.

This unit has been tested and is working. All keys respond properly, and the LED display works correctly. Included with the pictures is a short clip of it playing a song stored in ROM.

Package is 10.25" x 10.25" x 6.75" and weighs 2lbs. 0oz. The board is in an antistatic bag. Shipped via USPS Ground Advantage. Lower 48 only please.

Any questions feel free to ask!

Included in this auction:

Shinko Sangyo YS-6464A single board computer/trainer
Original manual with sample programs and schematics
4× AA battery holder w/ 9V battery style clip
Barrel jack adapter that screws onto the binding posts, allowing the unit to be powered from a 5V DC wall adapter or bench power supply
Vinyl case

Power note: This board does not have onboard voltage regulation. Use only a properly regulated 5V DC supply. Buyer is responsible for using the correct power source and polarity.

General Information


CPU	Sharp LH0080A Z80A-CPU-D, Z80A-compatible, max 4 MHz
ROM	2764 UV EPROM, 8 KB effective ROM at 0000H–1FFFH
RAM	5565 / 6264 SRAM, 8 KB effective RAM at 8000H–9FFFH
I/O	8255 PPI
Display	6-digit 7-segment LED, 4 digits for address + 2 for data
Keyboard	21 keys: hex keypad 0–F plus function keys
Sound	Piezo sounder connected through the 8255, specifically PA0
Power	5 V regulated supply, battery operation also possible
Board size	about 200 mm × 110 mm

TESTED! RARE! Vintage YS-6464A Japanese Z80 SBC Single Board Computer Trainer

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