liolio said:
why do they speak of Pci PciExpress?
It is one of the possible connections of the Super Companion Chip, one of the busses it can connect to...
why do they speak of ddr2?
Because the SCC supports connection to it and might need some I/O RAM ?
why do they speak of decoder encoder? the cell can stream 48 hdtv channe at the same time.
So ?
flexIO give nearly 80Gb/s bandwidth.
15 or 20 to the southbridge 35 to RSX.
No...
what does mean best effort processing?
The devices connected to it have relaxed timing requirements and do not require a rigidly enforced deterministic response time which is required by real-time processing (in which what is important is that any task you might do must be completed withing a certain time limit from the moment it is issued "A realtime system is one in which the correctness of the computations not only depends upon the logical correctness of the computation but also upon the time at which the result is produced. If the timing constraints of the system are not met, system failure is said to have occurred."
http://www.qnx.com/developers/articles/article_298_1.html ).
Dma is part of the cell is connected to eib and handle request of both ppe and 7 spe.
DMA means Direct Memory Access... you can have ,multiple pools of memory and multiple CPU's and multiple busses with multiple peripherals that want to access a particular pool of memory... PlayStation 2 has two DMA controllers IIRC: one in the EE and the other in the I/O CPU.
I don't remenber the name of the cell/Xdram connection but it's 25gb/s.[/quote] Yes, but it is not a problem.
What is more of a problem are theseis this:
Video Out, in the block-diagram, is handled by the RSX GPU and that would mean the RAMDAC's and CRTC's are connected to it and not to the SCC.
I could definately see the SCC used in a PSX 2 based on the PLAYSTATION 3 like (but better implemented
) the PSX is based on the PlayStation 2 chip-set. A PSX 2 that could allow recording of HD TV broadcast at the same time as the user is playing, functioning as a full Home Server + PVR which is not what PLAYSTATION 3 is supposed to be (only reading for example, no BD-R/RE or DVD+-R/RW writing) would be quite nice.
I could see though the SCC being used though, not at the same lengths as in a PSX 2.