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risc2500: added preliminary sound

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This commit is contained in:
hap 2016-11-03 21:13:05 +01:00
parent dbb95a051b
commit fa15cad309
2 changed files with 19 additions and 4 deletions
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19
src/mame/drivers/risc2500.cpp
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@ -5,7 +5,8 @@
Saitek RISC 2500
TODO:
- sound
- Sound is too short and high pitch, better when you underclock the cpu.
Is cpu cycle timing wrong? or internal divider?
******************************************************************************/
@ -14,6 +15,8 @@
#include "cpu/arm/arm.h"
#include "machine/ram.h"
#include "machine/nvram.h"
#include "sound/dac.h"
#include "sound/volt_reg.h"
#include "risc2500.lh"
@ -26,6 +29,7 @@ public:
m_maincpu(*this, "maincpu"),
m_ram(*this, "ram"),
m_nvram(*this, "nvram"),
m_dac(*this, "dac"),
m_inputs(*this, "P%u", 0)
{ }
@ -44,6 +48,7 @@ private:
required_device<cpu_device> m_maincpu;
required_device<ram_device> m_ram;
required_device<nvram_device> m_nvram;
required_device<dac_byte_interface> m_dac;
required_ioport_array<8> m_inputs;
uint32_t m_p1000;
@ -237,7 +242,9 @@ WRITE32_MEMBER(risc2500_state::p1000_w)
{
memset(m_vram, 0, sizeof(m_vram));
}
m_dac->write(data >> 28 & 3); // Speaker
m_p1000 = data;
}
@ -300,6 +307,12 @@ static MACHINE_CONFIG_START( risc2500, risc2500_state )
MCFG_RAM_EXTRA_OPTIONS("128K, 256K, 512K, 1M, 2M")
MCFG_NVRAM_ADD_NO_FILL("nvram")
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("dac", DAC_2BIT_BINARY_WEIGHTED_ONES_COMPLEMENT, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.25) // unknown DAC
MCFG_DEVICE_ADD("vref", VOLTAGE_REGULATOR, 0) MCFG_VOLTAGE_REGULATOR_OUTPUT(5.0)
MCFG_SOUND_ROUTE_EX(0, "dac", 1.0, DAC_VREF_POS_INPUT) MCFG_SOUND_ROUTE_EX(0, "dac", -1.0, DAC_VREF_NEG_INPUT)
MACHINE_CONFIG_END
@ -312,4 +325,4 @@ ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
CONS( 1992, risc, 0, 0, risc2500, risc2500, driver_device, 0, "Saitek", "RISC 2500", MACHINE_NOT_WORKING | MACHINE_NO_SOUND | MACHINE_CLICKABLE_ARTWORK )
CONS( 1992, risc, 0, 0, risc2500, risc2500, driver_device, 0, "Saitek", "RISC 2500", MACHINE_NOT_WORKING | MACHINE_CLICKABLE_ARTWORK )

4
src/mame/mame.lst
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@ -20423,7 +20423,6 @@ megaiv // 1989 Mephisto Mega IV Schachcomputer
milano // 1989 Mephisto Milano Schachcomputer
monteciv // 1990 Mephisto Monte Carlo IV LE Schachcomputer
polgar // 1986 Mephisto Polgar Schachcomputer
risc // Saitek 2500 14MHZ (skeleton)
sexpertb // 1988 Novag Expert B Chess Computer
sexpertc // 1989 Novag Super Expert C Chess Computer
sfortea // 1987 Novag Super Forte A Chess Computer
@ -31538,6 +31537,9 @@ rex6000 //
@source:rgum.cpp
rgum //
@source:risc2500.cpp
risc //
@source:riscpc.cpp
a7000 // 1995 Acorn Archimedes 7000
a7000p // 1997 Acorn Archimedes 7000+