ARM9 SWI Functions

ARM9 BIOS SWI Function

These are the functions provided by the ARM9 BIOS. IDs not mentioned here, calls swiSoftReset. I haven't checked any old ones if they've been modified/replaced.

ID	Name	Args	Changes
0x00	N/A (hangs)	none	formerly SoftReset
0x01	swiDecompressLZSSwithCallbackWrite8bitUnits	??	formerly jump to 0
0x02	swiDecompressLZSSwithCallbackWrite16bitUnits	??	formerly jump to 0
0x03	swiWaitByLoop	??	same as DS
0x04	swiIntrWait	??	same as DS
0x05	swiVBlankIntrWait	??	same as DS
0x06	swiHalt	??	same as DS
0x07-0x08	N/A (hangs)	??	same as DS / formerly jump to 0
0x09	swiDivide	??	same as DS
0x0A	N/A (hangs)	??	same as DS / formerly jump to 0
0x0B	swiCopy	??	same as DS
0x0C	swiFastCopy	??	same as DS
0x0D	swiSqrt	??	same as DS
0x0E	swiCRC16	??	same as DS
0x0F	N/A (hangs)	??	formerly IsDebugger
0x10	swiUnpackBits	??	same as DS
0x11	swiDecompressLZSSWram	??	same as DS
0x12	N/A (ignored)	??	(formerly swiDecompressLZSSVram)
0x13	swiDecompressHuffmanWithCallback	??	same as DS
0x14	swiDecompressRLEWram	??	same as DS
0x15	swiDecompressRLEVram	??	same as DS
0x16	swiDecodeDelta8	??	same as DS
0x17	N/A (hangs)	??	same as DS / formerly jump to 0
0x18	swiDecodeDelta16	??	same as DS
0x19	swiDecompressLZSSwithCallbackWrite16bitUnits	??	same as SWI 0x02 / formerly jump to 0
0x1A-0x1E	N/A (hangs)	??	same as DS / formerly jump to 0
0x1F	swiCustomPost	??	same as DS
0x20	swiInit_crypto_heap	??	new
0x21	swiRSA_decrypt	??	new
0x22	swiRSA_decrypt_signature	??	new
0x23	swiRSA_decrypt_der	??	new
0x24	swiSHA1_Init	??	new
0x25	swiSHA1_Update	??	new
0x26	swiSHA1_Final	??	new
0x27	swiSHA1	??	new
0x28	swiSHA1_Compare	??	new
0x29	SHA1_Random	looks like it's trying to generate a random number using SHA1	new
0x2A	N/A (hangs)	??	formerly jump to garbage
0x2B	N/A (ignored)	??	formerly jump to garbage
0x2C-0x3F	N/A (hangs)	??	formerly jump to garbage
0x40-0xFF	Mirrors of 0x00-0x3F	??	formerly jump to garbage

See Also

• ARM7 BIOS