Abaco Systems / SBS / Bit 3 608 VMEbus Adapter with DMA Controller Module
- GIO64 Adapter Card Installs and Operates in a GIO64 Slot
- DMA Controller Mode and Slave Mode DMA
- Provides Byte Swapping and Word Swapping Functions
- VMEbus Adapter Card can Function in System Controller Mode
The GE Fanuc / SBS / Bit 3 Model 608 is an easy-to-use, cost effective way to share memory and special purpose boards between a Silicon Graphics GIO64 bus Indigo2 computer and a VMEbus system. The Model 608 Adapter provides high-speed data transfers between systems, and requires minimal software support.
Model 608 interconnects the GIO64 bus and VMEbus systems at the physical layer. Working at the lowest level, the bus, the Adapter allows the two systems to share memory; memory appears to and is treated by each system as if it were its own. In addition, a card only available on one bus may be directly controlled by a device on the other bus. For example, an Array Processor board in a VMEbus chassis can be directly controlled by the GIO64 processor.
The Model 608 Adapter allows each bus to operate independently. The timing of the GIO64 bus and VMEbus is linked only when a memory or I/O reference is made to an address on one system that translates to a reference on the other. The integrity of the interface between Adapter cards is maintained by parity checks on address, control and data lines.
Model 608 supports bi-directional random access bus mastering from either system and also supports 16- / 32-bit data transfers using a built-in DMA Controller. The DMA Controller is a high-speed data mover engine that moves data between GIO64 system memory and the VMEbus at sustained data transfer rates up to 26 Megabytes per second (M Bytes/sec). It also allows a VMEbus DMA device (such as a disk controller) to DMA through the Adapter directly into GIO64 memory at data transfer rates in excess of 12M Bytes/sec. Actual performance rates are dependent on the capabilities of the specific GIO64 system and the speed of the VMEbus memory.
Other Bit 3 Adapters, supporting a wide variety of buses, can be used with Model 608 Adaptors to connect multiple computers and systems in star, daisy-chain or modified star/daisy-chain configurations.
Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.