Difference between revisions of "PSP"
| Line 2: | Line 2: | ||
Short bit of specs: | Short bit of specs: | ||
| − | * two MIPS32R2 cores with no | + | * two MIPS32R2 cores with no [[TLB]] |
* 128bit Bus | * 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)) | * 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)) | ||
| Line 14: | Line 14: | ||
Lack of MMU makes this machine pretty much worthless except as a toy - which is what it was devised for, after all. | Lack of MMU makes this machine pretty much worthless except as a toy - which is what it was devised for, after all. | ||
| + | |||
| + | == Linux support == | ||
| + | There is none and there won't be any despite some people's foolish claims and attempts. The hardware lacks a TLB and as such is too primitive to run a real Linux kernel. [[µClinux]] would be a potential alternative but that would mean no binary compatibility with existing Linux/MIPS. | ||
== External Links == | == External Links == | ||
Revision as of 13:21, 13 March 2006
Work on PSP Linux has started at PSP Linux. Check it out, especially if you're a developer. It should be pretty easy to get it running, since the PSP uses a memory stick and can load applications on there, but for now nobody knows for sure.
Short bit of specs:
- 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
There is none and there won't be any despite some people's foolish claims and attempts. The hardware lacks a TLB and as such is too primitive to run a real Linux kernel. µClinux would be a potential alternative but that would mean no binary compatibility with existing Linux/MIPS.
