Main product image for 28 pin  1Mbit Mask ROM replacement
Product image 1 for 28 pin  1Mbit Mask ROM replacement
Product image 2 for 28 pin  1Mbit Mask ROM replacement
Replacement of 28 pin 1Mbit Mask ROMs used on arcade PCBs
Gaming
Retrocomputing

28 pin 1Mbit Mask ROM replacement

Sold by Caius Arcade

$20.00

No tax for United States [change]
Stock available: 5
Check
Original Design
This product was designed by Caius Arcade . By buying this product you support original hardware creators.

What is it?

This is a pre-assembled board meant to be used as a replacement for 28 pin 1Mbit Mask ROMs (like 23C1000, 831000 and TC531000) widely used on arcade PCBs. Each board comes assembled in all its parts and pre-programmed with ROM file at your choice so it's a ready-to-use solution.

Why did you make it?

I did it because the original part breaks very easily, making expensive and valuable arcade PCBs useless.

What makes it special?

The replacement has exactly the same functionality of the original parts which are known to be prone to failure.

Links to code and documentation

No additional links provided for this product.

Shipping policy

Shipping is tracked, you receive the tracking number.

- No insurance.

- Item ships within 7 business days.

- Delivery is usually done within 7-15 business days.

The seller

Caius Arcade

Caius Arcade  logo

Vietri sul Mare (Salerno), Campania, Italy
1 order since May 10, 2026
LONG LIVE THE ARCADE!