smpc.h File Reference

System Management & Peripheral Control. More...

Go to the source code of this file.

Enumerations
enum	jo_smpc_command {   EnableMasterCPU, EnableSlaveCPU, DisableSlaveCPU, EnableSoundCPU,   DisableSoundCPU, EnableCD, DisableCD, EnableNetlink,   DisableNetlink, SystemReset, ChangeSystemClockSpeed352, ChangeSystemClockSpeed320,   FetchStatusAndPeripheralData, SetRTCDateAndTime, SetSMPCMemory, SendNMIRequestToMasterCPU,   EnableReset, DisableReset }
	SMPC Commands. More...
enum	jo_smpc_memory_address {   CommandRegister, StatusRegister, StatusFlag, InputRegister0,   InputRegister1, InputRegister2, InputRegister3, InputRegister4,   InputRegister5, InputRegister6, OutputRegister0, OutputRegister1,   OutputRegister2, OutputRegister3, OutputRegister4, OutputRegister5,   OutputRegister6, OutputRegister7, OutputRegister8, OutputRegister9,   OutputRegister10, OutputRegister11, OutputRegister12, OutputRegister13,   OutputRegister14, OutputRegister15, OutputRegister16, OutputRegister17,   OutputRegister18, OutputRegister19, OutputRegister20, OutputRegister21,   OutputRegister22, OutputRegister23, OutputRegister24, OutputRegister25,   OutputRegister26, OutputRegister27, OutputRegister28, OutputRegister29,   OutputRegister30, OutputRegister31, PortDataRegister1, PortDataRegister2,   DataDirectionRegister1, DataDirectionRegister2, InputOutputSelectRegister, ExternalLatchEnableRegister }

Functions
static __jo_force_inline void	jo_smpc_write_byte (jo_smpc_memory_address addr, unsigned char data)
static __jo_force_inline unsigned char	jo_smpc_read_byte (jo_smpc_memory_address addr)
static __jo_force_inline void	jo_smpc_wait (void)
static __jo_force_inline void	jo_smpc_begin_command (void)
static __jo_force_inline void	jo_smpc_end_command (jo_smpc_command command)

Detailed Description

System Management & Peripheral Control.

Author

Johannes Fetz

Remarks

The SMPC (System Management & Peripheral Control) is a Hitachi 4-bit MCU with built-in program ROM.

The actual part number is HD404920FS, but the chip is branded with a Sega custom part number of 315-5744.

Bug:

No known bugs.

Enumeration Type Documentation

jo_smpc_command

enum jo_smpc_command

SMPC Commands.

Enumerator
EnableMasterCPU	Resets and enables the SH-2 Master CPU.
EnableSlaveCPU	Resets and enables the SH-2 Slave CPU.
DisableSlaveCPU	Disables the SH-2 Slave CPU.
EnableSoundCPU	Resets and enables the Motorola C68K (sound) CPU.
DisableSoundCPU	Disables the Motorola C68K (sound) CPU.
EnableCD	Resets and enables the CD Block.
DisableCD	Disables the CD Block.
EnableNetlink	Resets and enables Netlink execution.
DisableNetlink	Disables Netlink execution.
SystemReset	Resets the System.
ChangeSystemClockSpeed352	Changes the system clockspeed.
ChangeSystemClockSpeed320	Changes the system clockspeed.
FetchStatusAndPeripheralData	Fetches the SMPC status and peripheral data.
SetRTCDateAndTime	Sets the date and time for the RTC.
SetSMPCMemory	Sets the 4-byte battery-backed memory contained on the SMPC(which is used by the bios for language settings, etc.
SendNMIRequestToMasterCPU	Sends an NMI request to the Master SH2.
EnableReset	Enables NMI requests to be sent when the Reset button is pressed.
DisableReset	Disables NMI requests to be sent when the Reset button is pressed.

jo_smpc_memory_address

enum jo_smpc_memory_address

Enumerator
CommandRegister	The command that's supposed to be issued by the SMPC.
StatusRegister	Status Register.
StatusFlag	Status Flag. Shows the status of the SMPC command. Normally you set this to 1 when issuing out a command, and then the SMPC clears it when it's finished.
InputRegister0	Input registers for command issuing. Whatever data the SMPC needs for processing command goes here.
InputRegister1
InputRegister2
InputRegister3
InputRegister4
InputRegister5
InputRegister6
OutputRegister0	Ouput Register for the command. If it supports it, it'll output any return data here.
OutputRegister1
OutputRegister2
OutputRegister3
OutputRegister4
OutputRegister5
OutputRegister6
OutputRegister7
OutputRegister8
OutputRegister9
OutputRegister10
OutputRegister11
OutputRegister12
OutputRegister13
OutputRegister14
OutputRegister15
OutputRegister16
OutputRegister17
OutputRegister18
OutputRegister19
OutputRegister20
OutputRegister21
OutputRegister22
OutputRegister23
OutputRegister24
OutputRegister25
OutputRegister26
OutputRegister27
OutputRegister28
OutputRegister29
OutputRegister30
OutputRegister31
PortDataRegister1
PortDataRegister2
DataDirectionRegister1
DataDirectionRegister2
InputOutputSelectRegister
ExternalLatchEnableRegister

Function Documentation

jo_smpc_begin_command()

static __jo_force_inline void jo_smpc_begin_command ( void  )

static

jo_smpc_end_command()

static __jo_force_inline void jo_smpc_end_command ( jo_smpc_command  command )

static

jo_smpc_read_byte()

static __jo_force_inline unsigned char jo_smpc_read_byte ( jo_smpc_memory_address  addr )

static

jo_smpc_wait()

static __jo_force_inline void jo_smpc_wait ( void  )

static

jo_smpc_write_byte()

static __jo_force_inline void jo_smpc_write_byte ( jo_smpc_memory_address  addr, unsigned char  data  )

static