Acromag / Xembedded / Xycom XVME-977 Hard Drive / Floppy Drive Module

The XVME-977 is a VMEbus storage module that integrates hard drive and floppy disk interfaces into a single double-high card slot, enabling data storage and retrieval in legacy industrial and embedded systems. The module routes IDE and floppy drive signals through the P2 connector and draws power from the VMEbus P1 connector, making it compatible with standard 6U VMEbus card cages and processor modules such as the XVME-654 and XVME-655.

Technical Specifications

• IDE hard drive support: 1.3 GB to 2.2 GB (formatted)


• Floppy drive: 3.5" PC-compatible, 1.44 MB, 0.5" high


• Optional solid-state ATA flash disk: 10 MB, 20 MB, 40 MB, or 60 MB


• Optional 1.3" IDE flash disk drive available Hard Drive Performance:


• 1.3 GB: 14 msec average access time, 4 msec track-to-track seek time


• 2.2 GB: 12 msec average access time, 4 msec track-to-track seek time Electrical Requirements:


• Hard drive: +5V, 1.1 A max (spin-up), 0.4 A typical


• Floppy drive: +5V, 0.74 A max (spin-up), 0.4 A typical


• Flash drive active: 25 mA max; sleep mode: <5 mA Environmental:


• Operating: 0°C to 50°C, 20% to 80% RH non-condensing


• Non-operating: -40°C to 60°C


• Operating altitude: sea level to 10,000 ft; non-operating to 40,000 ft


• Vibration: 0 to 500 Hz (operating)

Key Features

• Automatic error retry with transparent defect mapping


• Single double-high VMEbus slot occupation


• Easily removable design


• Multiple storage configuration options

Compatibility & Integration The XVME-977 interfaces with XVME-654 and XVME-655 VMEbus processors and integrates with the XVME-979 module for CD-ROM expansion.