The Radisys EXM-MX is a 6U VMEbus mass storage module that provides integrated disk controller, hard disk, and floppy drive capabilities for embedded PC systems. This expansion module mates to an EXM expansion subplane as the right-most device, delivering IDE-based storage with support for multiple operating systems including MS-DOS and other PC-compatible platforms.
Technical Specifications
Storage & Interface
• Hard disk capacity: 500 MB to 2 GB
• Floppy drive: 1.44 MB internal unit
• Interface: IDE (Integrated Device Electronics)
• Form factor: 6U VMEbus, occupying two or three slots depending on hard disk size
• Dimensions: 0.5 in × 4.0 in × 7.0 in
• Weight: approximately 1.00 lbs
Power & Supply
• Required supplies: +5 V and +12 V from VMEbus
• The +12 V supply powers the hard disk drive
Front Panel Connectivity
• 34-pin connector for external 3.5″ or 5.25″ floppy drives
• 50-pin SCSI connector for external hard disk drives up to 2 GB
• Status indicators: two LEDs for +5 V and +12 V rail monitoring, one LED for hard disk access activity
– Key Features
• Single module design—only one EXM-MX per system permitted
• Electrically equivalent to standard PC ISA bus architecture
• Compatible with all PC operating systems
• External drive expansion via standard connectors
• Visual power and activity monitoring
– Compatibility & Integration
The EXM-MX operates within the Radisys EXM expansion interface standard and must be positioned as the right-most module on the EXM expansion subplane. It cannot coexist with EXM-3 or EXM-9 disk controllers, or with EXM-MX series disk drives. The front-panel SCSI port functions exclusively in the MS-DOS environment; SCSI device support outside MS-DOS is not provided.
