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sn76496: remove u8106 alias

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This commit is contained in:
hap 2020-09-02 11:01:22 +02:00
parent a7ec473a8c
commit a1a7f9fa35
3 changed files with 9 additions and 22 deletions
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6
src/devices/sound/sn76496.cpp
View File

@ -178,11 +178,6 @@ sn76496_device::sn76496_device(const machine_config &mconfig, const char *tag, d
{
}
u8106_device::u8106_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: sn76496_base_device(mconfig, U8106, tag, 0x4000, 0x01, 0x02, true, false, 8, false, true, owner, clock)
{
}
y2404_device::y2404_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: sn76496_base_device(mconfig, Y2404, tag, 0x10000, 0x04, 0x08, false, false, 8, false, true, owner, clock)
{
@ -477,7 +472,6 @@ void sn76496_base_device::register_for_save_states()
}
DEFINE_DEVICE_TYPE(SN76496, sn76496_device, "sn76496", "SN76496")
DEFINE_DEVICE_TYPE(U8106, u8106_device, "u8106", "U8106")
DEFINE_DEVICE_TYPE(Y2404, y2404_device, "y2404", "Y2404")
DEFINE_DEVICE_TYPE(SN76489, sn76489_device, "sn76489", "SN76489")
DEFINE_DEVICE_TYPE(SN76489A, sn76489a_device, "sn76489a", "SN76489A")

8
src/devices/sound/sn76496.h
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@ -7,7 +7,6 @@
DECLARE_DEVICE_TYPE(SN76496, sn76496_device)
DECLARE_DEVICE_TYPE(U8106, u8106_device)
DECLARE_DEVICE_TYPE(Y2404, y2404_device)
DECLARE_DEVICE_TYPE(SN76489, sn76489_device)
DECLARE_DEVICE_TYPE(SN76489A, sn76489a_device)
@ -87,13 +86,6 @@ public:
sn76496_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
};
// U8106 not verified yet. todo: verify; (a custom marked sn76489? only used on mr. do and maybe other universal games)
class u8106_device : public sn76496_base_device
{
public:
u8106_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
};
// Y2404 not verified yet. todo: verify; (don't be fooled by the Y, it's a TI chip, not Yamaha)
class y2404_device : public sn76496_base_device
{

17
src/mame/drivers/mrdo.cpp
View File

@ -5,8 +5,6 @@
Mr Do!
driver by Nicola Salmoria
Updated 02/2010 with proper XTAL values thanks to Oliver_A
PCB Model: 8201
Main Clock: XTAL = 8.2 MHz
Video clock: XTAL = 19.6 MHz
@ -18,6 +16,10 @@ VBlank duration: 1/VSYNC * (70/262) = 4457 us
The manual for this model clearly shows above values in 'Misc' parts listings.
There's a chance that certain bootlegs might have the different 8/20 MHz XTALS.
Sound chips have custom label "8106", the original label was scratched off.
They are presumedly SN76489. Note that Lady Bug's PCB S/N is also 8106 and
has the same sound chips.
***************************************************************************/
#include "emu.h"
@ -56,8 +58,8 @@ void mrdo_state::main_map(address_map &map)
map(0x8800, 0x8fff).ram().w(FUNC(mrdo_state::mrdo_fgvideoram_w)).share("fgvideoram");
map(0x9000, 0x90ff).writeonly().share("spriteram");
map(0x9800, 0x9800).w(FUNC(mrdo_state::mrdo_flipscreen_w)); // screen flip + playfield priority
map(0x9801, 0x9801).w("u8106_1", FUNC(u8106_device::write));
map(0x9802, 0x9802).w("u8106_2", FUNC(u8106_device::write));
map(0x9801, 0x9801).w("sn1", FUNC(sn76489_device::write));
map(0x9802, 0x9802).w("sn2", FUNC(sn76489_device::write));
map(0x9803, 0x9803).r(FUNC(mrdo_state::mrdo_SECRE_r));
map(0xa000, 0xa000).portr("P1");
map(0xa001, 0xa001).portr("P2");
@ -177,7 +179,7 @@ GFXDECODE_END
void mrdo_state::mrdo(machine_config &config)
{
// Basic machine hardware
Z80(config, m_maincpu, MAIN_CLOCK/2); // Verified
Z80(config, m_maincpu, MAIN_CLOCK/2); // Verified
m_maincpu->set_addrmap(AS_PROGRAM, &mrdo_state::main_map);
m_maincpu->set_vblank_int("screen", FUNC(mrdo_state::irq0_line_hold));
@ -193,9 +195,8 @@ void mrdo_state::mrdo(machine_config &config)
// Sound hardware
SPEAKER(config, "mono").front_center();
U8106(config, "u8106_1", MAIN_CLOCK/2).add_route(ALL_OUTPUTS, "mono", 0.50); // sn76489-equivalent?, Verified
U8106(config, "u8106_2", MAIN_CLOCK/2).add_route(ALL_OUTPUTS, "mono", 0.50); // sn76489-equivalent?, Verified
SN76489(config, "sn1", MAIN_CLOCK/2).add_route(ALL_OUTPUTS, "mono", 0.50); // Verified
SN76489(config, "sn2", MAIN_CLOCK/2).add_route(ALL_OUTPUTS, "mono", 0.50); // Verified
}
void mrdo_state::mrlo(machine_config &config)