Xycom XVME-957 Acromag XVME957 Large-capacity storage board

Xycom XVME-957 Acromag XVME957 Large-capacity storage board Configuration:500 MB – 6 GB Hard Drive，1.44 MB 3.5″ Floppy Drive,Based on the context provided, XVME957 is a high-capacity storage subsystem that provides a large IDE hard drive and a 1.44 MB 3.5-inch floppy disk drive in a single VMEbus slot. The subsystem is designed to work with Xycom’s VME PC/AT processor [1]. The subsystem is also available with a 1.3-inch IDE flash disk drive for applications that require non-rotating high-capacity storage

INTERRUPT CONTROL

Interrupts for non-intelligent modules can be enabled or disabled by setting/clearing the Interrupt Enable bit in the module status register. The status of pending on-board interrupts can also be read from this register. Interrupt control for intelligent modules is handled by the Interprocessor Communications Protocol.

COMMUNICATIONS BETWEEN PROCESSORS

Communications between an intelligent “masterT1 and an intelligent 1/0 module is governed by XY COM’s Interprocessor Communication (IPC) Protocol. This protocol involves the use of 20-byte Command Block data structures, which can be located anywhere in shared global RAM or dual-access RAM on an 1/0 module, to exchange commands and data between a host processor and an 1/0 module. Interprocessor Communication Protocol is thoroughly explained in Chapter 3 of this manual.

THE KERNEL

To standardize its XVME 1/0 modules, XYCOM has designed them around “kernels” common from module to module. Each different module type consists of a standard kernel, combined with module-dependent application circuitry. Module standardization results in more efficient module design and allows the implementation of the Standard 1/0 Architecture. The biggest benefit of standardization for intelligent modules is that it allows the use of a common command language or protocol (Interprocessor Communication Protocol in this case).

The intelligent kernel is based around a 68000 microprocessor. This design provides the full complement of VMEbus Requester and Interrupter options for master/slave

interfacing, as well as all of the advantages provided by the various facets of the XYCOM Standard 1/0 Architecture (as covered earlier in this appendix).

XVME-260
XVME-293
XVME-400
XVME-401
XVME-402
XVME-428/1
XVME-428/2
XVME-490/1
XVME-500/4
XVME-505/2
XVME-530
XVME-531
XVME-540
XVME-560
XVME-564
XVME-566
XVME-601/5
XVME-653