Difference between revisions of "PSP"
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| − | + | Some basic specs of the PSP: | |
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* two MIPS32R2 cores with no [[TLB]] | * two MIPS32R2 cores with no [[TLB]] | ||
* 128bit Bus | * 128bit Bus | ||
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== External Links == | == External Links == | ||
| − | * [http:// | + | * [http://http://df38.dot5hosting.com/~remember/chris/ PSP port of uClinux] |
* [http://www.extremetech.com/article2/0,,1639233,00.asp Sony Details PSP Chip Specs] | * [http://www.extremetech.com/article2/0,,1639233,00.asp Sony Details PSP Chip Specs] | ||
* [http://playstation.about.com/od/psp/a/PSPSpecs.htm PSP Specs] | * [http://playstation.about.com/od/psp/a/PSPSpecs.htm PSP Specs] | ||
Revision as of 08:04, 12 January 2007
Some basic specs of the PSP:
- two MIPS32R2 cores with no TLB
- 128bit Bus
- 1 - 333MHz @ 1.2V (currently capped at 222MHz (The 222MHZ cap is software based and lies in the executed files, it is not firmware based so is easily bypassed))
- Main Memory: 32MB, 4MB eDRAM
- Bus Bandwidth: 2.6GB/sec
- I-Cache, D-Cache
- FPU, VFPU (Vector Unit) @ 2.6GFlops
- 3D-CG Extended Instructions
The description should be taken with a grain of salt. For instance, even the CPU core is not clear - maybe it is MIPS 4KE, but maybe 24K... The Coprocessor seems to be totally custom.
Lack of MMU makes this machine pretty much worthless except as a toy - which is what it was devised for, after all.
Linux support
Since the PSP's Allegrex CPU has no mmu, only uClinux variety kernels can be run on it. A mipsnommu branch of uClinux 2.4.19 has been ported to the PSP and is available at http://df38.dot5hosting.com/~remember/chris/
