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This commit is contained in:
Angelo Salese 2013-08-07 23:35:48 +00:00
parent c9ff76bdef
commit 6d72000598
2 changed files with 81 additions and 6 deletions
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76
src/emu/sound/upd7752.c
View File

@ -1,6 +1,8 @@
/***************************************************************************
Template for skeleton device
NEC uPD7752 Voice Synthesizing LSI
skeleton device
***************************************************************************/
@ -16,8 +18,9 @@ Template for skeleton device
// device type definition
const device_type UPD7752 = &device_creator<upd7752_device>;
/* TODO: unknown exact size */
static ADDRESS_MAP_START( upd7752_ram, AS_0, 8, upd7752_device )
AM_RANGE(0x00000, 0x3ffff) AM_RAM
AM_RANGE(0x00000, 0xffff) AM_RAM
ADDRESS_MAP_END
//**************************************************************************
@ -32,7 +35,7 @@ upd7752_device::upd7752_device(const machine_config &mconfig, const char *tag, d
: device_t(mconfig, UPD7752, "uPD7752", tag, owner, clock, "upd7752", __FILE__),
device_sound_interface(mconfig, *this),
device_memory_interface(mconfig, *this),
m_space_config("ram", ENDIANNESS_LITTLE, 8, 18, 0, NULL, *ADDRESS_MAP_NAME(upd7752_ram))
m_space_config("ram", ENDIANNESS_LITTLE, 8, 16, 0, NULL, *ADDRESS_MAP_NAME(upd7752_ram))
{
}
@ -56,6 +59,8 @@ void upd7752_device::device_start()
{
/* TODO: clock */
m_stream = stream_alloc(0, 1, clock() / 64);
m_status = 0;
}
@ -85,11 +90,36 @@ void upd7752_device::sound_stream_update(sound_stream &stream, stream_sample_t *
{
}
//**************************************************************************
// INLINE HELPERS
//**************************************************************************
inline UINT8 upd7752_device::readbyte(offs_t address)
{
return space().read_byte(address);
}
//-------------------------------------------------
// writebyte - write a byte at the given address
//-------------------------------------------------
inline void upd7752_device::writebyte(offs_t address, UINT8 data)
{
space().write_byte(address, data);
}
//**************************************************************************
// READ/WRITE HANDLERS
//**************************************************************************
void upd7752_device::status_change(UINT8 flag,bool type)
{
if(type == true)
m_status |= flag;
else
m_status &= ~flag;
}
READ8_MEMBER( upd7752_device::read )
{
switch(offset & 3)
@ -99,7 +129,7 @@ READ8_MEMBER( upd7752_device::read )
//-x-- ---- REQ audio parameter (1) input request (0) prohibited (???)
//--x- ---- ~INT / EXT message data (1) Outside (0) Inside
//---x ---- ERR error flag
case 0x00: return 0x60;
case 0x00: return m_status;
//[0x02]: port 0xe2 latch?
case 0x02: return 0xff;
//[0x03]: port 0xe3 latch?
@ -113,6 +143,26 @@ WRITE8_MEMBER( upd7752_device::write )
switch(offset & 3)
{
// [0x00]: audio parameter transfer
case 0x00:
if(m_status & EXT)
{
/*
[0] xxxx x--- number of frames (times) to apply next table (N1)
---- -x-- Quantized Magnification Data (QMAG)
---- --x- Selective Interpolation Data (SI)
---- ---x Voicing/Unvoicing Data (VU)
[1] xxxx ---- amp Voice source amplitude
---- x--- Fricative Voice data
---- -xxx Pitch
(repeat for N1 times)
if [0] & 0xf8 == 0 then command stop
*/
writebyte(m_ram_addr++,data);
}
//else
// ...
break;
// [0x02]: mode set
// ---- -x-- Frame periodic analysis (0) 10 ms / frame (1) 20 ms / frame
@ -122,8 +172,22 @@ WRITE8_MEMBER( upd7752_device::write )
// 10 : FAST SPEED
// 11 : Setting prohibited
// case 0x02:
case 0x02:
m_mode = data & 7;
break;
case 0x03: //command set
switch(data)
{
case 0xfe: // external message select cmd
status_change(EXT,true);
status_change(REQ,true);
//TODO: BSY flag too
m_ram_addr = 0;
break;
}
break;
// case 0x03: command set
}
}

11
src/emu/sound/upd7752.h
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@ -9,6 +9,11 @@ Template for skeleton device
#ifndef __UPD7752DEV_H__
#define __UPD7752DEV_H__
/* status flags */
#define BSY 1<<7
#define REQ 1<<6
#define EXT 1<<5
#define ERR 1<<4
//**************************************************************************
@ -48,6 +53,12 @@ protected:
private:
sound_stream *m_stream;
const address_space_config m_space_config;
UINT8 m_status;
UINT16 m_ram_addr;
UINT8 m_mode;
void status_change(UINT8 flag,bool type);
inline UINT8 readbyte(offs_t address);
inline void writebyte(offs_t address, UINT8 data);
};