Difference between revisions of "PSP"

From LinuxMIPS
Jump to: navigation, search
Line 2: Line 2:
  
 
Short bit of specs:
 
Short bit of specs:
* PSP CPU CORE
+
* two MIPS32R2 cores with no MMU
* Two MIPS R4000 32bit Cores
+
 
* 128bit Bus
 
* 128bit Bus
* 1 - 333MHz @ 1.2V
+
* 1 - 333MHz @ 1.2V (currently capped at 222MHz)
* Main Memory: 8MB(eDRAM) (**Changed to 32MB, 4MB embedded in May 2004)
+
* Main Memory: 32MB, 4MB eDRAM
 
* Bus Bandwidth: 2.6GB/sec
 
* Bus Bandwidth: 2.6GB/sec
 
* I-Cache, D-Cache
 
* I-Cache, D-Cache
Line 12: Line 11:
 
* 3D-CG Extended Instructions  
 
* 3D-CG Extended Instructions  
  
The description should be taken with a grain of salt.  The [[R4000]] is a [[1991]] vintage 64-bit processor for high-end workstations and processors, not an embeddable core and so hardly what would be used for a battery powered device. Aside other processors of the same vintage such as the R4600 would be faster and less power-hungry.
+
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 Coprocessor0 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.
  
 
== External Links ==
 
== External Links ==

Revision as of 16:29, 18 August 2005

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. The U.S. release will jumpstart the development process, thats March 24, 2005.

Short bit of specs:

  • two MIPS32R2 cores with no MMU
  • 128bit Bus
  • 1 - 333MHz @ 1.2V (currently capped at 222MHz)
  • 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 Coprocessor0 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.

External Links