Memory budget
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A memory budget is an area of memory reserved by the system for a specific usage.
List
Here is a list of default budgets. They are allocated on boot by SceProcessmgr. They vary per FW version, and per boot flags.
| Name | Base paddr | Size | Comments |
|---|---|---|---|
| ScePhyMemPartGameCdram | 0x20000000 / 0x21000000 (0.995 internal) | 112MiB | cdram for game |
| ScePhyMemPartShellCdram | 0x27000000 / 0x20000000 (0.995 internal) | 16MiB | cdram for shell |
| ScePhyMemPartKD | 0x40200000 / 0x40300000 (0.995 internal) | 36MiB / 32MiB (0.995 internal) | for kernel drivers |
| ScePhyMemPartPhyCont | 0x42600000 / 0x42300000 (0.995 internal) | 26MiB | physically continuous memory |
| ScePhyMemPartShared | 0x44000000 / 0x43D00000 (0.995 internal) | 8MiB | for shared modules |
| ScePhyMemPartGameCDialog | 0x44800000 / 0x44500000 (0.995 internal) | 9MiB | for game cdialog |
| ScePhyMemPartShell | 0x45100000 / 0x44E00000 (0.995 internal) | 50MiB / 48MiB (0.995 internal) | for shell |
| ScePhyMemPartShellDummy | 0x78000000 | 128MiB | If have dipsw 0xD2, setting this memory. |
| ScePhyMemPartReserved | 0x47E00000 (0.995 internal) | 6MiB (0.995 internal) | reserved |
| Remaining memory (for Game +109MiB mode and system) | 0x48300000 / 0x48400000 (0.995 internal) | 125MiB / 124MiB (0.995 internal) | Remaining memory for GAME. |
| ScePhyMemPartGame | 0x50000000 | 256MiB 512MiB (0.995 internal) 512MiB on devkit and have dipsw 0x80. |
for game |
| ScePhyMemPartGameDummy | 0x60000000 | 256MiB | If not have dipsw 0x80, setting this memory. |
| ScePhyMemPartTool | 0x70000000 (0.995 internal) | 256MiB (0.995 internal) | for TOOL platforms |
Special 3.50 devtool
| Name | Start | End | Size | Comments |
|---|---|---|---|---|
| ScePhyMemPartShellCdram | 0x20000000 | 0x20ffffff | 0x1000000 | cdram for shell |
| ScePhyMemPartGameCdram | 0x21000000 | 0x27ffffff | 0x7000000 | cdram for game |
| ScePhyMemPartKD | 0x40200000 | 0x426fffff | 0x2500000 | for kernel drivers |
| ScePhyMemPartPhyCont | 0x42700000 | 0x440fffff | 0x1A00000 | physically continuous memory |
| ScePhyMemPartShared | 0x44100000 | 0x448fffff | 0x800000 | for shared modules |
| ScePhyMemPartGameCDialog | 0x44900000 | 0x451fffff | 0x900000 | for game CDialog |
| ScePhyMemPartShell | 0x45200000 | 0x482fffff | 0x3500000 | for shell |
| ScePhyMemPartGame | 0x50000000 | 0x6fffffff | 0x20000000 | for game |
| ScePhyMemPartTool | 0x70000000 | 0x77ffffff | 0x8000000 | for TOOL platforms |
| ScePhyMemPartShellDummy | 0x78000000 | 0x7fffffff | 0x8000000 | - |