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added ds8874 device

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This commit is contained in:
hap 2021-02-07 17:12:06 +01:00
parent f102bc364c
commit ad11e2d46e
6 changed files with 180 additions and 12 deletions
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12
scripts/src/machine.lua
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@ -1210,6 +1210,18 @@ if (MACHINES["DS75161A"]~=null) then
}
end
---------------------------------------------------
--
--@src/devices/machine/ds8874.h,MACHINES["DS8874"] = true
---------------------------------------------------
if (MACHINES["DS8874"]~=null) then
files {
MAME_DIR .. "src/devices/machine/ds8874.cpp",
MAME_DIR .. "src/devices/machine/ds8874.h",
}
end
---------------------------------------------------
--
--@src/devices/machine/e0516.h,MACHINES["E0516"] = true

1
scripts/target/mame/arcade.lua
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@ -487,6 +487,7 @@ MACHINES["DS2401"] = true
MACHINES["DS2404"] = true
MACHINES["DS75160A"] = true
MACHINES["DS75161A"] = true
--MACHINES["DS8874"] = true
MACHINES["E0516"] = true
MACHINES["E05A03"] = true
MACHINES["E05A30"] = true

1
scripts/target/mame/mess.lua
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@ -509,6 +509,7 @@ MACHINES["DS2401"] = true
MACHINES["DS2404"] = true
MACHINES["DS75160A"] = true
MACHINES["DS75161A"] = true
MACHINES["DS8874"] = true
MACHINES["E0516"] = true
MACHINES["E05A03"] = true
MACHINES["E05A30"] = true

84
src/devices/machine/ds8874.cpp Normal file
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@ -0,0 +1,84 @@
// license:BSD-3-Clause
// copyright-holders:hap
/*
National Semiconductor DS8874 9-Digit Shift Input LED Driver
It's basically a 9-bit generic shifter, outputs are active-low.
Only one output is active at a time.
TODO:
- add 1-bit callbacks/read functions if necessary
- datasheet info is very sparse, so implementation may have errors
- low battery pin
*/
#include "emu.h"
#include "machine/ds8874.h"
DEFINE_DEVICE_TYPE(DS8874, ds8874_device, "ds8874", "DS8874 LED Driver")
//-------------------------------------------------
// constructor
//-------------------------------------------------
ds8874_device::ds8874_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) :
device_t(mconfig, DS8874, tag, owner, clock),
m_write_output(*this)
{ }
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void ds8874_device::device_start()
{
// resolve callbacks
m_write_output.resolve_safe();
// register for savestates
save_item(NAME(m_data));
save_item(NAME(m_cp));
save_item(NAME(m_shift));
}
//-------------------------------------------------
// handlers
//-------------------------------------------------
void ds8874_device::refresh_output()
{
m_write_output(m_shift);
}
WRITE_LINE_MEMBER(ds8874_device::data_w)
{
state = (state) ? 1 : 0;
// reset shift register at falling edge
if (!state && m_data)
{
m_shift = 0x1fe;
refresh_output();
}
m_data = state;
}
WRITE_LINE_MEMBER(ds8874_device::cp_w)
{
state = (state) ? 1 : 0;
// clock shift register at any edge
if (state != m_cp && m_shift != 0xff)
{
m_shift = (m_shift << 1 & 0x1ff) | 1;
refresh_output();
}
m_cp = state;
}

61
src/devices/machine/ds8874.h Normal file
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@ -0,0 +1,61 @@
// license:BSD-3-Clause
// copyright-holders:hap
/*
National Semiconductor DS8874 9-Digit Shift Input LED Driver
*/
#ifndef MAME_MACHINE_DS8874_H
#define MAME_MACHINE_DS8874_H
#pragma once
// pinout reference
/*
_______
CP 1 |* | 14 Vcc
_DATA 2 | | 13 LOW BATT OUT
OUT 1 3 | | 12 OUT 9
OUT 2 4 |DS8874N| 11 OUT 8
OUT 3 5 | | 10 OUT 7
OUT 4 6 | | 9 OUT 6
GND 7 |_______| 8 OUT 5
CP = CLOCK PULSE
*/
class ds8874_device : public device_t
{
public:
ds8874_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 0);
// configuration helpers
auto write_output() { return m_write_output.bind(); } // OUT pins
DECLARE_WRITE_LINE_MEMBER(data_w);
DECLARE_WRITE_LINE_MEMBER(cp_w);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override { refresh_output(); }
private:
void refresh_output();
int m_data = 0;
int m_cp = 0;
u16 m_shift = 0xff;
// callbacks
devcb_write16 m_write_output;
};
DECLARE_DEVICE_TYPE(DS8874, ds8874_device)
#endif // MAME_MACHINE_DS8874_H

33
src/mame/drivers/hh_tms1k.cpp
View File

@ -158,15 +158,17 @@
#include "emu.h"
#include "includes/hh_tms1k.h"
#include "machine/tms1024.h"
#include "machine/clock.h"
#include "machine/ds8874.h"
#include "machine/timer.h"
#include "machine/tms1024.h"
#include "sound/beep.h"
#include "sound/s14001a.h"
#include "sound/sn76477.h"
#include "video/hlcd0515.h"
#include "bus/generic/carts.h"
#include "bus/generic/slot.h"
#include "softlist.h"
#include "screen.h"
#include "speaker.h"
@ -2779,9 +2781,13 @@ class cnfball_state : public hh_tms1k_state
{
public:
cnfball_state(const machine_config &mconfig, device_type type, const char *tag) :
hh_tms1k_state(mconfig, type, tag)
hh_tms1k_state(mconfig, type, tag),
m_ds8874(*this, "ds8874")
{ }
required_device<ds8874_device> m_ds8874;
void ds8874_output_w(u16 data);
void update_display();
void write_r(u16 data);
void write_o(u16 data);
@ -2793,7 +2799,13 @@ public:
void cnfball_state::update_display()
{
m_display->matrix(m_grid, m_o | (m_r << 6 & 0x700));
m_display->matrix(~m_grid, m_o | (m_r << 6 & 0x700));
}
void cnfball_state::ds8874_output_w(u16 data)
{
m_grid = data;
update_display();
}
void cnfball_state::write_r(u16 data)
@ -2805,14 +2817,10 @@ void cnfball_state::write_r(u16 data)
// R9,R10: input mux
m_inp_mux = data >> 9 & 3;
// R0: DS8874N CP: clock pulse edge-triggered
// note: DS8874N CP goes back to K8 too, game relies on it
if ((data ^ m_r) & 1)
m_grid = m_grid << 1 & 0x1ff;
// R1: DS8874N _DATA: reset shift register
if (~data & 2)
m_grid = 1;
// R0: DS8874N CP (note: it goes back to K8 too, game relies on it)
// R1: DS8874N _DATA
m_ds8874->cp_w(BIT(data, 0));
m_ds8874->data_w(BIT(data, 1));
// R2-R4: led data
m_r = data;
@ -2863,7 +2871,8 @@ void cnfball_state::cnfball(machine_config &config)
m_maincpu->o().set(FUNC(cnfball_state::write_o));
/* video hardware */
PWM_DISPLAY(config, m_display).set_size(10, 8+3);
DS8874(config, m_ds8874).write_output().set(FUNC(cnfball_state::ds8874_output_w));
PWM_DISPLAY(config, m_display).set_size(9, 8+3);
m_display->set_segmask(0xc3, 0x7f);
m_display->set_segmask(0x38, 0xff); // only the middle 3 7segs have DP
m_display->set_bri_levels(0.01, 0.1); // player led is brighter