I am planning some microcontroller-based IA projects and thus wanted to have regular TTL UART accessible outside of NABU without modifying any internals. Since there are hobbyist breakout boards readily available for it, I decided to use an Analog Devices MAX490 full-duplex RS422 transceiver.
After some trial and error, the following picture shows how to connect the chip up to NABU. I verified that it's working by using an FTDI TTL Serial to USB converter and DJ's Internet Adapter software.
As the illustration shows, we are looking at the front side of the socket, i.e. the solder side of a DIN 5-pin connector.
Wiring diagram for MAX490 Transceiver
Instructions to create a NABU cable and get assistance with your cable. Even find out where to buy a pre-made cable.
Jump to
- Announcements, News and Updates
- Welcome
- Leo's Core Dump
- Events
- NABU Repair, Operations and Hacks
- NABU 1600
- Internet Adapters
- ↳ Cables
- ↳ The Internet Adapter (RetroNET)
- ↳ NABU.RUN
- ↳ Keyboard Emulator
- ↳ adm3 Telnet Terminal Emulator
- Software Projects
- ↳ Cloud CP/M
- ↳ Cloud GUI
- ↳ CPM MSX BIOS
- ↳ NABU-LIB
- ↳ Production Dave
- ↳ RetroNET Communication Protocol
- ↳ RetroNET Chat
- ↳ RetroNET Telnet
- ↳ RNCMD
- ↳ SlideYou & SlideShow
- ↳ ROM Ver 14
- ↳ Font Editor
- ↳ TechCowBoy Software
- ↳ CPM Drive
- ↳ MSX8 Rom Launcher
- Hardware Projects
- ↳ RenderEng F18 Alt
- ↳ 8251 CPM Serial Output
- ↳ Floppy Controller Card
- ↳ Serial I/O Card
- ↳ Hard Drive Interface
- ↳ Printers
- ↳ BC Rom Switcher PCB
- ↳ WIFI Modem
- ↳ Microcore Labs ROM Emulator
- ↳ Microcore Labs MCLZ8 Z80 Emulator
- ↳ RomWBW Option Card
- Emulators
- ↳ MAME NABU Emulator
- Forum Support & New Project Requests
- Project Suggestions & Ideas