dual ported

dual ported

A term used to describe memory integrated circuits which can be accessed simultaneously via two independent address and data busses.

Dual ported memory is often used in video display hardware, especially in conjunction with Video Random Access Memory (VRAM). The two ports allow the video display hardware to read memory to display the contents on screen at the same time as the CPU writes data to other areas of the same memory. In single-ported memory these two processes cannot occur simultanteously, the CPU must wait, thus resulting in slower access times. Cycle stealing is one technique used to avoid this in single-ported video memory.
References in periodicals archive ?
End users may tend to lean toward native Fibre Channel tape drives because they are dual ported which allows for the system design to include multiple redundant paths into the drives.
Remember that even a dual ported native FC drive is still only a single drive.
Designed as an auto indexing, dual ported static RAM interface, it is capable of performing all of the required tasks associated with simulation, testing, monitoring, data communication and production/validation test plans of the various components of the Avionics Multiplex Bus.
Designed as an auto indexing, dual ported static RAM interface, it is capable of performing all of the required tasks associated with simulation, testing, monitoring, data communication, and Production/Validation test plans of the various components of the Avionics Multiplex Bus.
The Cereva system will use dual ported fibre channel disk drives from IBM and Seagate.
But fibre disks are dual ported and that means a higher degree of fault tolerance and higher data availability.