PSX BIOS

PSX Kernel

It should be noted this is for scph-1001, and not every psx bios will resemble this exactly. theoretically, all bios should work similarly though.

000000a0: Bios call A
000000b0: Bios call B
000000c0: Bios call C
00000500: C(0x09) SysInitKernelVariables
00000540: C(0x1c) AdjustA0Table
00000598: SysInitKernelVariables
000005c4: Bios A
000005e0: Bios B
00000600: Bios C
00000620: Bios Get IRQ CAUSE
00000630: Bios Get IRQ SR
00000640: Bios Get IRQ SR r4
00000650: Bios Syscall0
0000065c: B(0x56) GetC0Table
00000668: B(0x57) GetB0Table
00000c80: C(0x06) ExceptionHandler
00000ea0: Bios Get IRQ CAUSE & EPC
00000eb0: C(0x07) InstallExceptionHandlers
00000f20: B(0x19) HookEntryInt
00000f2c: B(0x18) ResetEntryInt
00000f40: B(0x17) ReturnFromException
00001018: BIOS_0x1018-0x102c
00001030: alloc_kernel_memory_sub
0000113c: C(0x08) SysInitMemory
00001174: B(0x00) alloc_kernel_memory
00001408: B(0x01) free_kernel_memory
00001420: C(0x02) SysEnqIntRP
00001444: C(0x03) SysDeqIntRP
00001508: C(0x00) EnqueueTimerAndVblankIrqs 
000015d8: C(0x0a) ChangeClearRCnt
000015f8: B(0x02) init_timer
000016ac: B(0x03) get_timer
000016e4: B(0x04) enable_timer_irq
00001728: B(0x05) disable_timer_irq
0000175c: B(0x06) restart_timer
00001b20: C(0x01) EnqueueSyscallHandler
00001b44: B(0x07) DeliverEvent
00001c5c: B(0x20) UnDeliverEvent
00001d00: C(0x04) get_free_EvCB_slot
00001d8c: B(0x08) OpenEvent
00001e1c: B(0x09) CloseEvent
00001e44: B(0x0a) WaitEvent
00001ec8: B(0x0b) TestEvent
00001f10: B(0x0c) EnableEvent
00001f4c: B(0x0d) DisableEvent
00001f88: C(0x05) get_free_TCB_slot
00002018: B(0x0e) OpenTh
000020a8: B(0x0f) CloseTh
000020d4: B(0x10) ChangeTh
00002724: C(0x0c) InitDefInt
0000278c: C(0x0d) SetIrqAutoAck
000027c0: C(0x12) InstallDevices
00002870: C(0x1b) KernelRedirect an input of p1 = 1 on the ps2 causes a system error :D
00002909: C(0x13) FlushStdInOutPut
00002958: A(0x00) open also B(0x32)
00002a64: A(0x01) lseek also B(0x33)
00002b28: A(0x02) read also B(0x34)
00002c94: A(0x03) write also B(0x35)
00002e00: A(0x04) close also B(0x36)
00002e98: B(0x55) _get_error
00002eec: B(0x54) _get_errno
00002efc: A(0x05) ioctl also B(0x37)
00002fc8: C(0x19) _ioabort
00003000: A(0x06) exit also B(0x38)
0000346c: A(0x07) isatty also B(0x39)
000034b4: C(0x17) _circgetc
0000352c: C(0x18) _circputc
000035a4: C(0x0e) ReturnZero Also C(0x0f), C(0x10), C(0x11), C(0x14). with dev bios, would actually be C(0x0e) dev_sio_init, C(0x0f) dev_sio_open, C(0x10) dev_sio_in_out, C(0x11) dev_sio_ioctl, C(0x14) SystemError
000035ac: B(0x40) cd
00003678: B(0x59) testdevice
00003744: B(0x45) erase
00003810: B(0x46) undelete
000038d8: B(0x41) format
000039a4: B(0x42) firstfile2
00003a70: B(0x43) nextfile
00003aac: B(0x44) rename
00003c2c: B(0x47) AddDrv
00003ce0: B(0x48) DelDrv
00003dac: B(0x49) PrintInstalledDevices
00003e5c: C(0x1a) set_card_find_mode
00003e68: C(0x1D) get_card_find_mode
00003e80: C(0x16) _cdevscan
00003f04: C(0x15) _cdevinput
00003ff0: A(0x0a) getchar also B(0x3c)
00004024: A(0x08) getc also B(0x3a)
0000406c: A(0x3c) putchar also B(0x3d)
000040c8: B(0x12) InitPAD2
00004134: A(0x09) putc also B(0x3b)
00004164: A(0x3d) gets also B(0x3e)
00004304: A(0x3e) puts also B(0x3f)
000043d0: B(0x5b) ChangeClearPAD
00004b90: B(0x13) StartPAD2
00004c10: B(0x14) StopPAD2
00004c70: B(0x4b) StartCARD2
00004cf4: B(0x4c) StopCARD2
00004d3c: B(0x50) _new_card
00005da8: B(0x4a) InitCARD2
00005e30: B(0x58) _card_chan
00005e50: B(0x4f) _card_read
00005f04: B(0x4e) _card_write
00005fb8: B(0x4d) _card_info_subfunc 
0000605c: B(0x5c) _card_status
00006070: B(0x5d) _card_wait
0000609c: B(0x15) PAD_init2
000061c4: B(0x16) PAD_dr
000065e0: B(0x51) Krom2RawAdd
00006670: B(0x53) Krom2Offset <- subfunction of Krom2RawAdd
00006a50: B(0x52) SystemError
00006a60: B(0c5a) SystemError
00006ba0: C(0x0b) SystemError
00006bb0: B(0x1a) SystemError 
00006bc0: B(0x1b) SystemError 
00006bd0: B(0x1c) SystemError 
00006be0: B(0x1d) SystemError 
00006bf0: B(0x1e) SystemError 
00006c00: B(0x1f) SystemError 
00006c10: B(0x21) SystemError 
00006c20: B(0x22) SystemError 
00006c30: B(0x23) SystemError 
00006c40: B(0x2a) SystemError
00006c50: B(0x2b) SystemError