Category:RS-232C Interfaces
This page was last modified 13:04, 27 September 2021 by Mars2000you. Based on work by Gdx.

Contents

Stand-alone RS-232C interfaces

Most external RS-232C interfaces come with a ROM containing RS-232C BIOS and additional MSX-BASIC instructions. The interfaces without the specific RS-232C BASIC ROM will not work with all serial applications. All interfaces with BIOS 1.0 or without BIOS are only I/O based.

Model ROM BIOS BASIC UART Notes
ASCII MSX-Serial 232 Yes 2.0 RS-232C BASIC i8251 + i8253 I/O and memory (slot) based,
DMA controller 82c37 with switch
Cibertron RS232/Terminal Yes - Cibertron BASIC Cirandão communication software
(a modem is required)
Digital Design DDX 80T Yes Yes DDX BASIC Non standard BIOS,
integrated with 80 columns text mode
Gradiente CT-80NET Yes 1.01 RS-232C BASIC Z8530 Integrated with 80 columns text mode
Gradiente TM-1 Yes Modem included - Transforms the MSX
into a videotex and Cirandão terminal
Harukaze Fast RS-232C Yes 1.0 - 16550A link
Kuma RS232C Interface Board Yes - RS-232C BASIC
Mitsubishi ML-20RS No - - Wire jumpers for terminal/modem function
Philips NMS 1210 No 1.0 RS-232C BASIC Controlled by simulating ROM in RAM,
RS-232C BIOS/BASIC and applications on disk
Philips NMS 1211 No 1.0 RS-232C BASIC Controlled by simulating ROM in RAM,
RS-232C BIOS/BASIC and applications on disk
Philips NMS 1212 No 1.0 RS-232C BASIC Controlled by simulating ROM in RAM,
RS-232C BIOS/BASIC and applications on disk
Pioneer PX-RS7 Yes 1.0 RS-232C BASIC
Repro Factory HBI-232MKII Yes 2.0 RS-232C BASIC i8251 + i8253 I/O and memory (slot) based
Sanyo MRS-001 Yes 1.0 RS-232C BASIC i8251 + i8253
Sharp HB-3000 Yes 1.0 - Communication/videotex/Cirandão software
(a modem is required)
Sharp HB-3001 Yes 1.0 - Communication/videotex/Cirandão software
(a modem is required)
Sony HBI-232 Yes 2.0 RS-232C BASIC i8251 + i8253 I/O and memory (slot) based,
switch for terminal/modem operation
Spectravideo SVI-757 Yes 1.0 RS-232C BASIC CP/M system disk
Sunrise ATA-IDE + RS232C No - - 16550A Integrated with ATA-IDE card,
terminal software on disk
Sunrise RS232C No - - 16550A Terminal software on disk
Talent TRX-700 Yes 1.0 RS-232C BASIC Communication software
Talent TRX-710 Yes 1.0 RS-232C BASIC
Toshiba HX-R700 Yes 1.0 RS-232C BASIC i8251 + i8253
Victor IF-7610 Yes 1.0 RS-232C BASIC


Computers with optional RS-232C upgrade

All the concerned interfaces are only I/O based. With exception for the Mitsubishi ML-G30 Model 1, all the MSX computers with optional RS-232C upgrade have RS-232C BIOS 1.0, RS-232C BASIC and i8251 + i8253 as UART.

Model Generation RS-232C interface (kit) Notes
Mitsubishi ML-G30 Model 1 MSX2 Mitsubishi ML-21RS No RS-232C ROM, floppy disk
with communication software,
switch to enable/disable RS-232C
Toshiba HX-20 MSX1 Toshiba HX-R701 Switch to enable/disable RS-232C
Toshiba HX-21 MSX1 Toshiba HX-R701 Switch to enable/disable RS-232C
Toshiba HX-23 MSX2 Toshiba HX-R701 Switch to enable/disable RS-232C
Toshiba HX-23F MSX2 Toshiba HX-R701 Switch to enable/disable RS-232C
Toshiba HX-32 MSX1 Toshiba HX-R701 Switch to enable/disable RS-232C
Toshiba HX-33 MSX2 Toshiba HX-R702 Switch to enable/disable RS-232C
Toshiba HX-34 MSX2 Toshiba HX-R703 Switch to enable/disable RS-232C


Computers with integrated RS-232C interface

With exception for the Mitsubishi ML-G30 Model 2, all the MSX computers with integrated RS-232C interface have a RS-232C BIOS and support for RS-232C BASIC or its enhanced version called MSX-Modem BASIC.

Model Generation BIOS Notes
Aucnet NIA-2001 Turbo R 1.0 Built-in modem, communication software
Daisen Sangyo MX-2021 MSX2 1.0
Mitsubishi ML-G3 MSX2 1.0 Communication software on disk,
switch to enable/disable RS-232C
Mitsubishi ML-G30 Model 2 MSX2 1.0 No RS-232C rom, communication software on disk,
switch to enable/disable RS-232C
Mitsubishi ML-TS2 MSX2 1.0 Telecom software
Panasonic FS-A1FM MSX2 1.0 Built-in Panasonic FS-CM1 modem, Telcom software,
switch to skip software without disabling modem,
DEL key when booting to skip software and disable modem
Pioneer UC-V102 MSX2 1.0 Can be extended with two UK-V104 boards
for a total of 5 RS-232C connectors
Sony HB-G900AP MSX2 2.0 Switch for terminal/modem operation
Sony HB-G900D MSX2 2.0 Switch for terminal/modem operation
Sony HB-G900F MSX2 2.0 Switch for terminal/modem operation
Sony HB-G900P MSX2 2.0 Switch for terminal/modem operation
Sony HB-T7 MSX2 1.0 Built-in Sony HBI-1200 modem, Telcom software
Sony HB-T600 MSX2 1.0 Built-in Sony HBI-1200 modem, Telcom software
Spectravideo SVI-738 MSX1 1.0
Toshiba HX-22 MSX1 1.0 Switch to enable/disable RS-232C
Toshiba HX-22CH MSX1 1.0 Switch to enable/disable RS-232C
Toshiba HX-22GB MSX1 1.0 Switch to enable/disable RS-232C
Toshiba HX-22I MSX1 1.0 Switch to enable/disable RS-232C
Toshiba HX-52 MSX1 1.0 Switch to enable/disable RS-232C
Victor HC-90 MSX2 1.0 System control can enable/disable RS-232C
Victor HC-95 MSX2 1.0 System control can enable/disable RS-232C
Yamaha YIS-503IIR MSX1 1.0 Yamaha Serial I/O Unit (MSX-NET):
UART i8251 + i8253, Network application


Standard MSX modems

The standard MSX modems generally don't support RS-232C BASIC, but most of them contain one or several applications. Only a few modems include an improved version of RS-232C BASIC, see SVI-Modem BASIC and MSX-Modem BASIC.

If you want to use a standard MSX modem as a pure RS-232C interface, you need to modify it internally (what requires technical knowledge and skills) or add an external RS-232C interface.

Model Notes
Canon VM-300
Daewoo CMD-120 Communication + Terminal software, ? MSX-Modem BASIC
Datagame Modem Videotexto Videotex application
DCS Teltron 1200 Viditel communication software
Digital Design DDX Modem Terminal + Videotex applications
Gradiente TM-1 RS-232C interface included
Transforms the MSX into a videotex and Cirandão terminal
Gradiente TM-2 Communicaion/Terminal + Videotex applications
Meisel V-3
Micro Technology MT-Telcom Terminal + Viditel applications
Micro Technology MT-Telcom II Terminal + Viditel applications
Miniware M4000 No ROM, communication software on disk
NTT Gakuen Modem
Panasonic FS-CM1 Switch for low/high speed, Telcom software,
MSX-Modem BASIC, also built in Panasonic FS-A1FM
Panasonic FS-CM820 Hybrid modem, switch for low/high speed,
two communication software
Philips NMS 1250 No ROM, communication software on disk
Philips NMS 1255 No ROM, communication software on disk
Philips NMS 1260 Communication software
Sony HBI-300 MSX-Modem BASIC
Sony HBI-1200 MSX-Modem BASIC, Telcom software,
also built in Sony HB-T600 and Sony HB-T7
Spectravideo SVI-709 Actually not a modem, but a LAN interface
Spectravideo SVI-737 SVI-Modem BASIC
Talent TLA-260 Was used in Mini-LAN Network with Talent TLP-250
Talent TLP-250 Was used in Mini-LAN Network with Talent TLA-260
Talent TMX-510 RS-232C BASIC
Talent TMX-520 Communication software
Telcom Multimodem No ROM, terminal application on tape or cartridge,
communication application on disk
The LINKS VIIK Hybrid modem, switch for low/high speed,
two communication software
Toshiba Modem 300/300, 1200/75 No ROM


Non RS-232C interfaces

  • The following computers have a non RS-232C interface:
Model Generation Notes
NTT Captain Multi-Station MSX2 Built-in non-standard modem, CAPTAIN communication software
Sanyo MPC-2300 MSX2 Built-in non-standard modem, used in network with Sanyo MPC-2500FD
Sanyo MPC-2500FD MSX2 Built-in non-standard modem, used in network with Sanyo MPC-2300
Yamaha YIS-503IIIR MSX2 Yamaha Serial I/O Unit Mk II (MSX-NET) : UART YM3802 (MIDI based)
This side-slot module contains a ROM with Network BASIC
Yamaha YIS-805/128R2 MSX2 Yamaha Serial I/O Unit Mk II (MSX-NET) : UART YM3802 (MIDI based)
This side-slot module contains a ROM with Network BASIC


  • The following modems use exclusively a specific protocol:
Model Protocol Notes
National FS-CM800 The LINKS Communication software
Sanyo KA-MODEM-1 The LINKS Communication software
Sanyo MPC-CAP1 CAPTAIN Sanyo MPC-X Graphic Expander Unit required
The LINKS NT-190 The LINKS Communication software
The LINKS NT-300 The LINKS Communication software
Yamaha MD-01 CAPTAIN Yamaha SCA-01 adapter required


Subcategories

This category has the following 2 subcategories, out of 2 total.

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