Specifications

Computer Architecture and Maintenance (G-Scheme-2014)

• AGP's is pipelined therefore requests are executed in parallel, making

execution faster than the non-pipelined PCI bus.

• AGP's address/data is de-muxed, therefore the AGP pipeline can work with the

data gotten from the de-mux. The PCI bus's address/data remained muxed so

that the non-pipelined PCI bus works with the data gotten from the mux.

Further comparisons between AGP and PCI

• AGP is a port (it only connects two nodes) while PCI is a bus

• AGP does not replace the PCI bus, it is a dedicated connection that can be used

only by the graphics subsystem

• AGP and PCI also differ in terms of their minimum length and alignment

requirements for transactions. AGP transaction are multiples of 8 bytes in length

and are aligned on 8 byte boundaries, while PCI transactions must be multiples

of 4 bytes and are aligned on 4 byte boundaries.

Prepared By – Prof. Manoj.kavedia (9860174297 – 9324258878 ) (www.kavediasir.yolasite.com)