/fdd-cdx2

Floppy disk controller for MSX computers.

FDD CDX2

Port Based Floppy Disk Drive controller for MSX computer

Recreated Microsol Tecnologia CDX-2 FDD interface.

  • Based on WD2793 or TMS2793 floppy disk controller
  • Support for 3.5' and 5.25' floppy drives
  • Modified to work with computers that support the BUSDIR signal
  • Jumper to switch between two different ROMs
  • Fits MSX cartridge
  • Tested on MSX1 and MSX2

ROMs tested with this interface:

  • CDX-2 (Microsol Tecnologia)
  • Angeisa (Angeisa Eletronica LTDA)
  • FAST!DiskROM

ROMs that should work with this interface:

  • DDX 1.0 (Digital Design)
  • DMX 1.2 (Conector Informatica LTDA.)
  • LIFTROM (Liftrom Informatica)
  • MANUT (AMT Mamute)
  • TPX 1.02 (TPX - Perifericos)

ROM vs free BASIC memory

ROM Free BASIC Memory
Angeisa (Angeisa Eletronica LTDA) 23430
CDX-2 (Microsol Tecnologia) 23430
DDX 1.0 (Digital Design) 20304
DMX 1.2 (Conector Informatica LTDA.) 20304
LIFTROM (Liftrom Informatica) 20304
MANUT (AMT Mamute) 23430
TPX 1.02 (TPX - Perifericos) 23430
FAST!DiskROM 25471

Test Points

  • TP1 - PIN 16 (DIRC)
  • TP2 - PIN 29 (TG43)
  • TP3 - PIN 31 (WD)

J3 must be closed to enable test mode. For normal use J3 must be open.

CDX-2

Look at YouTube:

YouTube link