SceCompat

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This is the primary kernel interface to the PSP Emulator.

Contents

Module

Known NIDs

Version Name World Privilege NID
1.69 SceCompat Non-secure Kernel 0x7FA33B9B
3.60-3.65 SceCompat Non-secure Kernel 0x8F2D0378

Libraries

Known NIDs

Version Name World Visibility NID
3.60-3.65 SceCompatForDriver Non-secure Kernel 0x7CFA62CD
3.60-3.65 SceCompatForVsh Non-secure User 0xF68A1AD0
0.990-3.65 SceCompat Non-secure User 0x0F35909D

Types

typedef struct SceCompatSettings { // size is 8 on FW 1.03
   SceUInt32 disp_filter : 1;
   SceUInt32 camera_direction : 1;
   SceUInt32 ra_up : 4;
   SceUInt32 ra_down : 4;
   SceUInt32 ra_left : 4;
   SceUInt32 ra_right : 4;
   SceUInt32 reserved : 46;
} SceCompatSettings;

typedef struct SceCompatInitParam { // size is 0x40 on FW 1.03
   char unk[0x40];
} SceCompatInitParam;

typedef struct SceCompatAllocCdramWithHoleParam { // size is 8 on FW 3.60
    void *pCachedCdramBase;
    void *pUncachedCdramBase;
} SceCompatAllocCdramWithHoleParam;

typedef enum SceCompatCacheMode {
	SCE_COMPAT_CACHE_MODE_NONE             = 0,
	SCE_COMPAT_CACHE_MODE_INVALIDATE       = 1,
	SCE_COMPAT_CACHE_MODE_CLEAN_INVALIDATE = 2,
	SCE_COMPAT_CACHE_MODE_CLEAN            = 3
} SceCompatCacheMode;

typedef struct SceCompatCtrl { // size is 0x10 on FW 3.60
    SceUInt32 timestamp;
    SceUInt32 buttons;
    SceUInt8 Lx;
    SceUInt8 Ly;
    SceUInt8 Rx;
    SceUInt8 Ry;
    SceUInt32 reserved;
} SceCompatCtrl;

typedef enum SceCompatPeripheralStateId {
	SCE_COMPAT_PERIPHERAL_STATE_IS_HEADPHONE_EXIST       = 1,
	SCE_COMPAT_PERIPHERAL_STATE_GET_BATTERY_LIFE_PERCENT = 2,
	SCE_COMPAT_PERIPHERAL_STATE_GET_BATTERY_LIFE_TIME    = 3,
	SCE_COMPAT_PERIPHERAL_STATE_IS_SUSPEND_REQUIRED      = 4
} SceCompatPeripheralStateId;

SceCompatForDriver

sceCompatSetColorSpaceModeForDriver

Version NID
0.990 not present
3.60 0x6EBD9E01

Name might also be sceCompatSetDisplayConfigForDriver.

// mode can be 0, 1 or 2
int sceCompatSetColorSpaceModeForDriver(SceUInt32 mode);

SceCompatForVsh

sceCompatGetTitleListForVsh

Version NID
0.990 not present
3.60 0x4915DEE7

Reads ur0:emu_list/title_list.bin.

// size must be 100
int sceCompatGetTitleListForVsh(void *pBuf, SceSize size);

sceCompatIsPocketStationTitleForVsh

Version NID
0.990 not present
3.60 0x70997F92

The first 4 characters of the Title Id are letters. The remaining numbers are converted to digital values with strtol,

XORed then compared to SceCompat hardcoded values.

SceBool sceCompatIsPocketStationTitleForVsh(const char *titleId);

sceCompatGetPspSystemSoftwareVersionForVsh

Version NID
0.990 not present
3.60 0x9C107CC9

On emulated PSP FW 6.60, it returns 660. On emulated PSP FW 6.61, it returns 661.

int sceCompatGetPspSystemSoftwareVersionForVsh(void);

SceCompat

sceCompatGetUpdateState

Version NID
0.990-1.03 not present
3.60 0x0CDE9EC5
int sceCompatGetUpdateState(void);

sceCompatGetDevInf

Version NID
0.990 not present
1.03-3.60 0x138006A8

Calls sceIoDevctlForDriver("ux0", 0x3001, NULL, 0, pInfo, sizeof(SceIoDevInfo));.

int sceCompatGetDevInf(SceIoDevInfo *pInfo);

sceCompatGetPeripheralState

Version NID
0.990-3.60 0x176B2906
int sceCompatGetPeripheralState(SceCompatPeripheralStateId stateId);

sceCompatWriteShared32

Version NID
0.990 not present
1.03-3.60 0x1CD51530
// some_id must be between 0x80 and 0x8A
int sceCompatWriteShared32(SceUInt32 some_id, SceUInt32 value);

sceCompatWriteSharedCtrl

Version NID
0.990-1.03 not present
3.60 0x2306FFED

Write pCtrl to Shared SRAM.

int sceCompatWriteSharedCtrl(SceCompatCtrl *pCtrl);

sceCompatSetSettings

Version NID
0.990 not present
1.03-1.69 0x312782DC
3.60 not present
int sceCompatSetSettings(SceCompatSettings settings);

sceCompatSuspendResume

Version NID
0.990 not present
1.69-3.60 0x324112CA
// mode: 0: suspend, 1: resume
// step: 1: first step, 2: second step
int sceCompatSuspendResume(SceUInt32 mode, SceUInt32 step);

sceCompatSetDisplayConfig

Version NID
0.990-1.03 not present
1.69-3.60 0x32BA3DCF
// head must be SCE_DISPLAY_HEAD_MAIN_LCD_OLED
// mode can be 0, 1 or 2
int sceCompatSetDisplayConfig(SceDisplayHead head, SceUInt32 mode);

sceCompatRegRead

Version NID
0.990-1.69 0x4521505D
3.60 not present
// unk_id: if unk_id equals 0, offset + size must be less than 0x3a5d,
// else if unk_id equals 1, offset + size must be less than 0x20000
int sceCompatRegRead(SceUInt32 unk_id, SceUInt32 offset, void *pBuf, SceSize size);

sceCompatAvailableColorSpaceSetting

Version NID
0.990-1.03 not present
3.60 0x456226DD

Returns true only if (displayDeviceType & 3) equals 3.

SceBool sceCompatAvailableColorSpaceSetting(void);

sceCompatCache

Version NID
0.940-3.60 0x6777390E
int sceCompatCache(SceCompatCacheMode mode, void *base, SceSize size);

sceCompatWaitSpecialRequest

Version NID
0.940-3.60 0x714F7ED6
int sceCompatWaitSpecialRequest(SceUInt32 req_id);

sceCompatReadShared32

Version NID
0.990 not present
1.03-3.60 0x73AA4871
// some_id must be between 0 and 7. 3 seems disabled.
int sceCompatReadShared32(SceUInt32 some_id, SceUInt32 *pValue);

sceCompatGetSettings

Version NID
0.990 not present
1.03-1.69 0x782C980E
3.60 not present
int sceCompatGetSettings(SceCompatSettings *pSettings);

sceCompatIsPocketStationTitle

Version NID
0.990-1.03 not present
3.60 0x7DCFBCCE

The first 4 characters of the Title Id are letters. The remaining numbers are converted to digital values with strtol,

XORed then compared to SceCompat hardcoded values.

SceBool sceCompatIsPocketStationTitle(const char *titleId);

sceCompatWaitAndGetRequest

Version NID
0.990-1.03 not present
3.60 0x8176C238
int sceCompatWaitAndGetRequest(SceUInt32 req_id, SceUInt32 a2);

sceCompatSetUpdateState

Version NID
0.990-1.03 not present
3.60 0x8A44206F
// unsure if there is an argument
int sceCompatSetUpdateState(void);

sceCompatStart

Version NID
0.940-3.60 0x8CA1632D
int sceCompatStart(void);

sceCompatPrepareLoad

Version NID
0.940 not present
1.03 0x78E469D6
3.60 not present

Loads Pcff (PSP Compat Flash Files) and Pcbc (PSP Compat Boot Code).

int sceCompatPrepareLoad(void);

sceCompatRegWrite

Version NID
0.990-1.69 0x912B1C28
3.60 not present
// unk_id: if unk_id equals 0, offset + size must be less than 0x3a5d,
// else if unk_id equals 1, offset + size must be less than 0x20000
int sceCompatRegWrite(SceUInt32 unk_id, SceUInt32 offset, const void *pBuf, SceSize size);

sceCompatIdStorageLookup

Version NID
0.940-3.60 0x94AAA245
int sceCompatIdStorageLookup(SceUInt16 key, SceUInt32 offset, void *pBuf, SceSize size);

sceCompatCheckPocketStation

Version NID
0.990 not present
1.03-3.60 0x96FC2A87

Checks PocketStation RIF.

int sceCompatCheckPocketStation(void);

sceCompatGetTitleList

Version NID
0.990-1.03 not present
3.60 0x99F13E04

Reads ur0:emu_list/title_list.bin.

// size must be 100
int sceCompatGetTitleList(void *pBuf, SceSize size);

sceCompatGetCurrentSecureTick

Version NID
0.990-1.03 not present
3.60 0xA073EBEE
int sceCompatGetCurrentSecureTick(SceRtcTick *pTick);

sceCompatAllocCdram

Version NID
0.990 not present
1.69-2.06 0x6E8E3BA8
3.60 not present
int sceCompatAllocCdram(void **ppCachedCdramBase, void **ppUncachedCdramBase);

sceCompatAllocCdramWithHole

Version NID
0.990-1.03 not present
3.60 0xA5039FFA
int sceCompatAllocCdramWithHole(SceCompatAllocCdramWithHoleParam *pCdram);

sceCompatMapDDR

Version NID
0.990 not present
1.03 0xC6B19D35
3.60 not present
// size must be 0x4000000 (64MB)
int sceCompatMapDDR(SceUID memblock_uid, SceSize size);

sceCompatGetPspSystemSoftwareVersion

Version NID
0.990-3.60 0xB113DCC0

On emulated PSP FW 6.60, it returns 660. On emulated PSP FW 6.61, it returns 661.

int sceCompatGetPspSystemSoftwareVersion(void);

sceCompatFrameBufferInit

Version NID
0.990 not present
1.03-3.60 0xBC0E2B4C
int sceCompatFrameBufferInit(void *base);

sceCompatLCDCSync

Version NID
0.990 not present
1.03-3.60 0xBD177787
int sceCompatLCDCSync(void);

sceCompatWaitIntr

Version NID
0.990-1.03 not present
3.60 0xC1E14CF5

sceCompatGetRequest

Version NID
0.990-1.03 not present
1.69 0xCB9F607B
3.60 not present

sceCompatDatRead

Version NID
0.990-3.60 0xCBE73EBE

Reads act.dat.

// index must be 0
// offset + size must be lower or equal to 0x1038
int sceCompatDatRead(SceUInt32 index, SceUInt32 offset, void *pBuf, SceSize size);

sceCompatReturnValueEx

Version NID
0.990 not present
1.69-3.60 0xCC02A9FF

sceCompatGetStatus

Version NID
0.990 not present
1.03-3.60 0xD2E3370E
int sceCompatGetStatus(void);

sceCompatInterrupt

Version NID
0.940-3.60 0xD6AA36DD

Set a custom SceCompatMailbox address.

// some_id must be between 0 and 15
int sceCompatInterrupt(SceUInt32 some_id);

sceCompatSetRif

Version NID
0.990 not present
1.03-3.60 0xD8B69F23
// Example of entitlementId: AA0000-AAAA00000_00-0000000000000000
int sceCompatSetRif(const char *entitlementId);

sceCompatGetPrimaryHead

Version NID
0.990 not present
1.69-3.60 0xDC9EE33A
SceDisplayHead sceCompatGetPrimaryHead(void);

sceCompatSetSuspendSema

Version NID
0.990 not present
1.69-3.60 0xDD30239E
int sceCompatSetSuspendSema(SceUID sema_id_0, SceUID sema_id_1);

sceCompatInitEx

Version NID
0.990-1.03 not present
1.69-3.60 0xE97C1B5F

Loads vs0:app/NPXS10028/pcff.skprx and os0:kd/pcbc.skprx, then compat_sm.self, calls SceGrabForDriver_072B8D93(param), and then issues compat_sm command 0x10006.

int sceCompatInitEx(int param);

sceCompatUninit

Version NID
0.990-3.60 0xEF929397
int sceCompatUninit(void);

sceCompatStop

Version NID
0.990-3.60 0xFCE2422F
int sceCompatStop(void);

sceCompatInit

Version NID
0.940-1.03 0xB9DBD54A
3.60 not present

Loads Pcff (PSP Compat Flash Files) and Pcbc (PSP Compat Boot Code).

int sceCompatInit(SceSize size, SceUInt32 a2, SceCompatInitParam *pParam);

sceCompatLCDCInit

Version NID
0.940-0.990 0x3021D626
1.03-3.60 not present
int sceCompatLCDCInit(void *pFrameBufBase);

sceCompatLCDCExec

Version NID
0.940-0.990 0x7E3E266D
1.03-3.60 not present
int sceCompatLCDCExec(void);

sceCompatResume

Version NID
0.990 0xCA184D5B
1.03-3.60 not present
// step: must be either 1 (resume Pervasive, restore CPU speed) or 2 (init lcd dmac, write resume payload, reload act.dat)
int sceCompatResume(SceUInt32 step, int maybe_addr);

sceCompatSuspend

Version NID
0.990 0x9EFFE36E
1.03-3.60 not present
// step: must be either 1 (black screen) or 2 (suspend Pervasive, slow down CPU, wipe act.dat in memory)
int sceCompatSuspend(SceUInt32 step);

sceCompatWriteShared

Version NID
0.990 0xC37A463C
1.03-3.60 not present

Writes to SceCompatSharedSram.

int sceCompatWriteShared(SceUInt32 offset, const void *pBuf, SceSize size);

sceCompatWaitRequest

Version NID
0.990-1.03 0x434BDAB0
3.60 not present
int sceCompatWaitRequest(SceUInt32 req_id);

sceCompatReturnResult

Version NID
0.990 0x02F5CF19
1.03-3.60 not present
int sceCompatReturnResult(SceUInt32 req_id);

sceCompatReturnValue

Version NID
0.990-1.03 0x61DB492A
3.60 not present
int sceCompatReturnValue(SceUInt32 req_id, uint a2, uint a3);

sceCompatSetDisplayBuffer

Version NID
0.990-1.03 0xC820EC43
3.60 not present
int sceCompatSetDisplayBuffer(const SceDisplayFrameBuf *pFrameBuf);

sceCompatReadShared

Version NID
0.990 0xC983287E
1.03-3.60 not present
int sceCompatReadShared(SceUInt32 offset, void *pBuf, SceSize size);