Repro Factory HBI-232MKII
This page was last modified 19:32, 8 September 2023 by Mars2000you. Based on work by Gdx and Rderooy.


The Repro Factory HBI-232MKII is a RS-232C interface including a cartridge and a manual.

The adapter provides a DE-9 Male port.

It is just one of three MSX Serial add-on adapters to use RS-232C BIOS 2.0 (the other being the ASCII MSX-Serial 232 and Sony HBI-232). The ROM included in the interface contains also the RS-232C BASIC instructions.

Where MSX serial solutions with BIOS 1.x use IO ports, and only one such adapter may be used at a time, with BIOS 2.0 memory mapped I/O is used, and multiple adapters are allowed.

Brand Repro Factory
Model HBI-232MKII
Region Europe
Launch price
Package content Serial Interface adapter
User's Manual
Emulation ROM dump needed. See this thread for details


Repro Factory HBI-232MKII manual
HBI-232MKII overview
Repro Factory HBI-232MKII
Repro Factory HBI-232MKII box
Repro Factory HBI-232MKII PCB