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.

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