Dipsw
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There are a total of 256 Dipswitches that are initialized at boot (possibly from the CP box MMIO region), labeled from 0 to 255. They are gated off by console type. Retail, testkit, devkit, and intdev-flagged devkit have access to more and more dip switches respectively. Retail can access none, testkit can access a limited selection, devkits can access most, and intdev-flagged devkits can access all. Below is a list of dipswitch/boot param indexes and their descriptions.
Dipsw Table
| Number | Description | Used In | Testkit-accessible? |
|---|---|---|---|
| 0x00 | IsDevelopmentMode | libSceDipsw.sprx | - |
| 0x01 | ???? | SceSysCore.elf | - |
| 0x02 | IsAssistMode | libSceDipsw.sprx | Yes |
| 0x08 | ???? | - | Yes |
| 0x10 | MemMode? | SceShellCore.elf | - |
| 0x11 | MemMode? | SceShellCore.elf | - |
| 0x18 | IsDisableRazor | libSceDipsw.sprx | - |
| 0x1E | GetDiableBinaryVersionCheckValue | libSceDipsw.sprx | - |
| 0x24 | ???? | - | Yes |
| 0x25 | ???? | - | Yes |
| 0x34 | ???? | - | Yes |
| 0x38 | isKeepProcess | SceSysCore.elf | - |
| 0x39 | coredump debug | SceSysCore.elf | - |
| 0x3C | ???? | SceShellCore.elf | - |
| 0x3D | Suspend disable EAP? | - | - |
| 0x40 | System CPU cores? | SceSysCore.elf | - |
| 0x41 | System CPU cores? | SceSysCore.elf | - |
| 0x4A | ???? | - | Yes |
| 0x4B | ???? | - | Yes |
| 0x4C | ???? | SceSysCore.elf | Yes |
| 0x60 | /dev/swapdev0 related | SceSysCore.elf | - |
| 0x65 | ???? | libSceDeci5Ttyp.sprx | - |
| 0x66 | Disable DSP | - | Yes |
| 0x6D | IsCronos | - | - |
| 0x78 | GC Force Page Migration Window Enable | - | - |
| 0x7B | A53 Timeout Enable | - | - |
| 0x7D | MP4 Dump for Decid | decid.elf | - |
| 0x80 | ???? | SceShellCore.elf | Yes |
| 0x85 | Memory Error Injection Disable | - | - |
| 0x8C | m_currentHwMode | SceSysCore.elf | - |
| 0x8D | ???? | - | Yes |
| 0x97 | Load GVM Log | - | - |
| 0x9B | MP3 (TEE) Enable | - | - |
| 0xA2 | ???? | - | Yes |
| 0xA3 | Force NAND format? | - | - |
| 0xA8 | kernel tty related | libSceDeci5Ttyp.sprx | - |
| 0xA9 | uplcommon related | decid.elf | - |
| 0xB1 | GC Skip Instruction Prefetch | - | - |
| 0xB2 | GC Use Debug uCode | - | - |
| 0xB5 | Debug GC Enable | - | - |
| 0xB8 | GC Clock Gating Disable | - | - |
| 0xBB | disable_hp3d | AgcCompositor.elf | - |
| 0xE4 | ???? | libSceDeci5Rdrfp.sprx | - |
| 0xE8 | ???? | libSceDeci5Fsmp.sprx | - |
| 0xEF | A53 Write Throttling Enable | - | - |
| 0xF1 | manu_mode related ? | SceSysCore.elf | - |
| 0xF7 | Start m.2 format? | - | Yes |
| 0xF8 | crash_compositor_if_eop_timeout | AgcCompositor.elf | - |
| 0xFA | ???? | SceSysCore.elf | - |
| 0xFF | ???? | - | Yes |