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(MESS) speeding up slot implementation of the DSP add-on chips too. nw.

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This commit is contained in:
Fabio Priuli 2013-03-22 13:04:02 +00:00
parent cac962c4b5
commit c6ca3fc828
4 changed files with 66 additions and 1 deletions
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5
src/mess/machine/sns_slot.c
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@ -671,6 +671,11 @@ bool base_sns_cart_slot_device::call_load()
if (software_entry() == NULL)
setup_addon_from_fullpath();
// in carts with an add-on CPU having internal dump, this speeds up access to the internal rom
// by installing read_bank in address space and mapping m_bios there
m_cart->speedup_addon_bios_access();
setup_nvram();
if (m_cart->get_nvram_size() || m_cart->get_rtc_ram_size())

1
src/mess/machine/sns_slot.h
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@ -115,6 +115,7 @@ public:
virtual DECLARE_WRITE8_MEMBER(write_ram) { UINT32 mask = m_nvram_size - 1; m_nvram[offset & mask] = data; return; } // NVRAM access
virtual DECLARE_READ8_MEMBER(chip_read) { return 0xff; }
virtual DECLARE_WRITE8_MEMBER(chip_write) {}
virtual void speedup_addon_bios_access() {};
void rom_alloc(running_machine &machine, UINT32 size);
void nvram_alloc(running_machine &machine, UINT32 size);

49
src/mess/machine/sns_upd.c
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@ -76,17 +76,22 @@ sns_rom_seta11dsp_device::sns_rom_seta11dsp_device(const machine_config &mconfig
void sns_rom20_necdsp_device::device_start()
{
m_dsp_prg = auto_alloc_array(machine(), UINT32, 0x2000/4);
m_dsp_data = auto_alloc_array(machine(), UINT16, 0x800/2);
}
void sns_rom21_necdsp_device::device_start()
{
m_dsp_prg = auto_alloc_array(machine(), UINT32, 0x2000/4);
m_dsp_data = auto_alloc_array(machine(), UINT16, 0x800/2);
}
void sns_rom_setadsp_device::device_start()
{
m_dsp_prg = auto_alloc_array(machine(), UINT32, 0x10000/4);
m_dsp_data = auto_alloc_array(machine(), UINT16, 0x1000/2);
}
/*-------------------------------------------------
mapper specific handlers
-------------------------------------------------*/
@ -348,6 +353,48 @@ machine_config_constructor sns_rom_seta11dsp_device::device_mconfig_additions()
}
// To make faster DSP access to its internal rom, let's install read banks and map m_bios there with correct byte order
void sns_rom20_necdsp_device::speedup_addon_bios_access()
{
m_upd7725->space(AS_PROGRAM).install_read_bank(0x0000, 0x07ff, "dsp_prg");
m_upd7725->space(AS_DATA).install_read_bank(0x0000, 0x03ff, "dsp_data");
membank("dsp_prg")->set_base(m_dsp_prg);
membank("dsp_data")->set_base(m_dsp_data);
// copy data in the correct format
for (int x = 0; x < 0x800; x++)
m_dsp_prg[x] = (m_bios[x * 4] << 24) | (m_bios[x * 4 + 1] << 16) | (m_bios[x * 4 + 2] << 8) | 0x00;
for (int x = 0; x < 0x400; x++)
m_dsp_data[x] = (m_bios[0x2000 + x * 2] << 8) | m_bios[0x2000 + x * 2 + 1];
}
void sns_rom21_necdsp_device::speedup_addon_bios_access()
{
m_upd7725->space(AS_PROGRAM).install_read_bank(0x0000, 0x07ff, "dsp_prg");
m_upd7725->space(AS_DATA).install_read_bank(0x0000, 0x03ff, "dsp_data");
membank("dsp_prg")->set_base(m_dsp_prg);
membank("dsp_data")->set_base(m_dsp_data);
// copy data in the correct format
for (int x = 0; x < 0x800; x++)
m_dsp_prg[x] = (m_bios[x * 4] << 24) | (m_bios[x * 4 + 1] << 16) | (m_bios[x * 4 + 2] << 8) | 0x00;
for (int x = 0; x < 0x400; x++)
m_dsp_data[x] = (m_bios[0x2000 + x * 2] << 8) | m_bios[0x2000 + x * 2 + 1];
}
void sns_rom_setadsp_device::speedup_addon_bios_access()
{
m_upd96050->space(AS_PROGRAM).install_read_bank(0x0000, 0x3fff, "dsp_prg");
m_upd96050->space(AS_DATA).install_read_bank(0x0000, 0x07ff, "dsp_data");
membank("dsp_prg")->set_base(m_dsp_prg);
membank("dsp_data")->set_base(m_dsp_data);
// copy data in the correct format
for (int x = 0; x < 0x3fff; x++)
m_dsp_prg[x] = (m_bios[x * 4] << 24) | (m_bios[x * 4 + 1] << 16) | (m_bios[x * 4 + 2] << 8) | 0x00;
for (int x = 0; x < 0x07ff; x++)
m_dsp_data[x] = (m_bios[0x10000 + x * 2] << 8) | m_bios[0x10000 + x * 2 + 1];
}
// Legacy versions including DSP dump roms, in order to support faulty dumps missing DSP data...

12
src/mess/machine/sns_upd.h
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@ -19,6 +19,7 @@ public:
virtual void device_start();
virtual void device_config_complete() { m_shortname = "sns_rom_necdsp"; }
virtual machine_config_constructor device_mconfig_additions() const;
virtual void speedup_addon_bios_access();
required_device<upd7725_device> m_upd7725;
@ -28,6 +29,9 @@ public:
virtual DECLARE_READ32_MEMBER(necdsp_prg_r);
virtual DECLARE_READ16_MEMBER(necdsp_data_r);
UINT32 *m_dsp_prg;
UINT16 *m_dsp_data;
};
// ======================> sns_rom21_necdsp_device
@ -43,6 +47,7 @@ public:
virtual void device_start();
virtual void device_config_complete() { m_shortname = "sns_rom21_necdsp"; }
virtual machine_config_constructor device_mconfig_additions() const;
virtual void speedup_addon_bios_access();
required_device<upd7725_device> m_upd7725;
@ -52,6 +57,9 @@ public:
virtual DECLARE_READ32_MEMBER(necdsp_prg_r);
virtual DECLARE_READ16_MEMBER(necdsp_data_r);
UINT32 *m_dsp_prg;
UINT16 *m_dsp_data;
};
// ======================> sns_rom_setadsp_device
@ -65,6 +73,7 @@ public:
// device-level overrides
virtual void device_start();
virtual void device_config_complete() { m_shortname = "sns_rom_setadsp"; }
virtual void speedup_addon_bios_access();
required_device<upd96050_device> m_upd96050;
@ -74,6 +83,9 @@ public:
virtual DECLARE_READ32_MEMBER(setadsp_prg_r);
virtual DECLARE_READ16_MEMBER(setadsp_data_r);
UINT32 *m_dsp_prg;
UINT16 *m_dsp_data;
};
// ======================> sns_rom_seta10dsp_device