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author Joakim Larsson Edstrom <joakimlarsson42@gmail.com>2017-07-08 00:14:06 +0200
committer Joakim Larsson Edstrom <joakimlarsson42@gmail.com>2017-07-08 00:14:06 +0200
commit4af3d0ac83b3b46b7044cd75cbaef161d9a03a0f (patch)
tree656e956b136a05714924e05db5719156f33bd2e4
parentd7452d300a7ef70e9049f3c0721dad94a96827cd (diff)
mc14411: NEW DEVICE Motorola MC14411 Bit Rate Generator
-rw-r--r--scripts/src/machine.lua12
-rw-r--r--scripts/target/mame/arcade.lua1
-rw-r--r--scripts/target/mame/mess.lua1
-rw-r--r--src/devices/machine/mc14411.cpp217
-rw-r--r--src/devices/machine/mc14411.h160
5 files changed, 391 insertions, 0 deletions
diff --git a/scripts/src/machine.lua b/scripts/src/machine.lua
index c1cc2afe1dc..db1feb75e54 100644
--- a/scripts/src/machine.lua
+++ b/scripts/src/machine.lua
@@ -1576,6 +1576,18 @@ end
---------------------------------------------------
--
+--@src/devices/machine/mc14411.h,MACHINES["MC14411"] = true
+---------------------------------------------------
+
+if (MACHINES["MC14411"]~=null) then
+ files {
+ MAME_DIR .. "src/devices/machine/mc14411.cpp",
+ MAME_DIR .. "src/devices/machine/mc14411.h",
+ }
+end
+
+---------------------------------------------------
+--
--@src/devices/machine/mc2661.h,MACHINES["MC2661"] = true
---------------------------------------------------
diff --git a/scripts/target/mame/arcade.lua b/scripts/target/mame/arcade.lua
index 05d5fbf5a62..dad0a154fec 100644
--- a/scripts/target/mame/arcade.lua
+++ b/scripts/target/mame/arcade.lua
@@ -472,6 +472,7 @@ MACHINES["MB87078"] = true
--MACHINES["MB8795"] = true
MACHINES["MB89352"] = true
MACHINES["MB89371"] = true
+--MACHINES["MC14411"] = true
MACHINES["MC146818"] = true
MACHINES["MC2661"] = true
MACHINES["MC6843"] = true
diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index 74c73c806b5..0aa1e20b0d3 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -461,6 +461,7 @@ MACHINES["MB87078"] = true
MACHINES["MB8795"] = true
MACHINES["MB89352"] = true
MACHINES["MB89371"] = true
+MACHINES["MC14411"] = true
MACHINES["MC146818"] = true
MACHINES["MC2661"] = true
MACHINES["MC6843"] = true
diff --git a/src/devices/machine/mc14411.cpp b/src/devices/machine/mc14411.cpp
new file mode 100644
index 00000000000..9433f36ed71
--- /dev/null
+++ b/src/devices/machine/mc14411.cpp
@@ -0,0 +1,217 @@
+// license:BSD-3-Clause
+// copyright-holders:Joakim Larsson Edstrom
+/*********************************************************************
+
+ mc14411.cpp
+
+ Motorola Bit Rate Generator
+
+ This device assumed a fixed rate clock/crystal and does not support
+ changing it through pin 21. All other features are implemented.
+
+*********************************************************************/
+
+#include "emu.h"
+#include "mc14411.h"
+
+/***************************************************************************
+ MACROS
+***************************************************************************/
+
+//#define LOG_GENERAL (1U << 0) // Already defined in logmacro.h
+#define LOG_SETUP (1U << 1)
+
+//#define VERBOSE (LOG_GENERAL|LOG_SETUP)
+//#define LOG_OUTPUT_FUNC printf
+
+#include "logmacro.h"
+
+//#define LOG(...) LOGMASKED(LOG_GENERAL, __VA_ARGS__) // Already defined in logmacro.h
+#define LOGSETUP(...) LOGMASKED(LOG_SETUP, __VA_ARGS__)
+
+#ifdef _MSC_VER
+#define FUNCNAME __func__
+#define LLFORMAT "%I64d"
+#else
+#define FUNCNAME __PRETTY_FUNCTION__
+#define LLFORMAT "%lld"
+#endif
+
+/***************************************************************************
+ LOCAL VARIABLES
+***************************************************************************/
+// 0/0 0/1 1/0 1/1 RSB/RSA
+// X1 X8 X16 X64
+const int mc14411_device::counter_divider[16][4] = {
+ { 192, 24, 12, 3 }, // F1
+ { 256, 32, 16, 4 }, // F2
+ { 384, 48, 24, 6 }, // F3
+ { 512, 64, 32, 8 }, // F4
+ { 768, 96, 48, 12 }, // F5
+ { 1024, 128, 64, 16 }, // F6
+ { 1536, 192, 96, 24 }, // F7
+ { 3072, 384, 192, 48 }, // F8
+ { 6144, 768, 384, 96 }, // F9
+ { 9216, 1152, 576, 144 }, // F10
+ { 12288, 1536, 768, 192 }, // F11
+ { 13696, 1712, 856, 214 }, // F12
+ { 16768, 2096, 1048, 262 }, // F13
+ { 24576, 3072, 1536, 384 }, // F14
+ { 2, 2, 2, 2 }, // F15
+ { 1, 1, 1, 1 } // F16
+};
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+// device type definition
+DEFINE_DEVICE_TYPE(MC14411, mc14411_device, "mc14411", "MC14411 BRG")
+
+/***************************************************************************
+ LIVE DEVICE
+***************************************************************************/
+mc14411_device::mc14411_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+ : mc14411_device(mconfig, MC14411, tag, owner, clock)
+{
+}
+
+mc14411_device::mc14411_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
+ : device_t(mconfig, type, tag, owner, clock)
+ , m_out_fx_cbs{*this, *this, *this, *this, *this, *this, *this, *this, *this, *this, *this, *this, *this, *this, *this, *this }
+ , m_divider(0)
+ , m_reset(CLEAR_LINE)
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+void mc14411_device::device_start()
+{
+ LOGSETUP("%s\n", FUNCNAME);
+
+ memset(m_fx_timer, '\0', sizeof(m_fx_timer));
+ for (int i = F1; i <= F16; i++)
+ {
+ m_out_fx_cbs[i].resolve();
+ if (!m_out_fx_cbs[i].isnull()) m_fx_timer[i] = timer_alloc(i);
+ }
+
+ save_item(NAME(m_divider));
+ save_item(NAME(m_reset));
+
+ m_reset_timer = timer_alloc(TIMER_ID_RESET);
+
+}
+
+//------------------------------------------------------------------------
+// device_reset - is called by the mame framework or by the owning device
+// driver or by ASSERTING the reset line through set_reset_line
+//------------------------------------------------------------------------
+void mc14411_device::device_reset()
+{
+ LOGSETUP("%s\n", FUNCNAME);
+
+ for (int i = F1; i <= F16; i++)
+ {
+ if (!m_out_fx_cbs[i].isnull())
+ {
+ // Reset line according to datasheet and remember it for transitions to come
+ (m_out_fx_cbs[i])(m_fx_state[i] = (i < F15 ? 0 : 1));
+
+ // Arm the timer based on the selected divider and the crystal value
+ double hz = clock()/counter_divider[i][m_divider] * 2; // 2 flanks per cycle
+ m_fx_timer[i]->adjust(attotime::from_hz(hz), i, attotime::from_hz(hz));
+ LOGSETUP(" - arming timer for F%d at %fHz\n", i + 1, hz);
+ }
+ }
+
+ if (m_reset == ASSERT_LINE)
+ {
+ m_reset_timer->adjust(attotime::from_nsec((double)900), TIMER_ID_RESET, attotime::from_nsec((double)900));
+ }
+}
+
+//-------------------------------------------------
+// device_timer - handler timer events
+//-------------------------------------------------
+void mc14411_device::device_timer (emu_timer &timer, device_timer_id id, int32_t param, void *ptr)
+{
+ switch(id)
+ {
+ case F1:
+ case F2:
+ case F3:
+ case F4:
+ case F5:
+ case F6:
+ case F7:
+ case F8:
+ case F9:
+ case F10:
+ case F11:
+ case F12:
+ case F13:
+ case F14:
+ case F15:
+ case F16:
+ (m_out_fx_cbs[id])(m_fx_state[id]++ & 1);
+ break;
+ case TIMER_ID_RESET:
+ // NOTE: This check could be triggered by either faulty hardware design or non accurate emulation so is just informative if the reset line is handled
+ // explicitelly instead of relying on calling device_reset
+ if (!(m_reset == ASSERT_LINE))
+ {
+ LOG("Reset pulse is too short, should be 900nS minimum");
+ logerror("Reset pulse is too short, should be 900nS minimum");
+ }
+ break;
+ default:
+ LOG("Unhandled Timer ID %d\n", id);
+ break;
+ }
+}
+
+//--------------------------------------------------------
+// rate_select_w - implements the RSA and RSB input pins
+// TODO: Needs to check real device behaviour how changing
+// divider at run time affects wave forms
+//--------------------------------------------------------
+WRITE8_MEMBER( mc14411_device::rate_select_w)
+{
+ LOGSETUP("%s %02x\n", FUNCNAME, data);
+
+ m_divider = data & 3;
+
+ for (int i = F1; i <= F16; i++)
+ {
+ if (!m_out_fx_cbs[i].isnull())
+ {
+ // Re-arm the timer based on the new selected divider and the crystal value
+ double hz = clock()/counter_divider[i][m_divider] * 2; // 2 flanks per cycle
+ m_fx_timer[i]->adjust(attotime::from_hz(hz), i, attotime::from_hz(hz));
+ LOGSETUP(" - Re-arming timer for F%d at %fHz\n", i + 1, hz);
+ }
+ }
+}
+
+//------------------------------------------------
+// reset_w - implements software controlled reset
+//------------------------------------------------
+WRITE_LINE_MEMBER( mc14411_device::reset_w)
+{
+ LOGSETUP("%s %02x\n", FUNCNAME, state);
+
+ m_reset = state;
+
+ if (m_reset == ASSERT_LINE)
+ {
+ LOGSETUP(" - Asserting reset\n");
+ device_reset();
+ }
+ else
+ {
+ LOGSETUP(" - Clearing reset\n");
+ }
+}
diff --git a/src/devices/machine/mc14411.h b/src/devices/machine/mc14411.h
new file mode 100644
index 00000000000..d5d6f29d662
--- /dev/null
+++ b/src/devices/machine/mc14411.h
@@ -0,0 +1,160 @@
+// license:BSD-3-Clause
+// copyright-holders:Joakim Larsson Edstrom
+/**********************************************************************
+*
+* Motorola MC14411 - bit rate generator. It utilizes a frequency divider
+* network to provide a wide range of output frequencies. A crystal controlled
+* oscillator is the clock source for the network. A 2 bit adress is used to
+* select one of four multiple output clock rates.
+*
+* - Single 5V sower supply
+* - Internal Oscillator Crystal Controlled for stability (1.8432 MHz)
+* - Sixteen Different Output Clock Rates
+* - 50% Output Duty Cycle
+* - Programmable Time Bases for one of four Multiple Output Rates
+* - Buffered Output compatible with low power TTL
+* - Noice immunity = 45% of VDD Typlical
+* - Diode protection on All Inputs
+* - External Clock may be applied to pin 21
+* - Internal pullup on reset input
+* _____ _____
+* F1 1 |* \_/ | 24 VDD
+* F3 2 | | 23 Rate Select A
+* F5 3 | | 22 Rate Select B
+* F7 4 | | 21 Xtal In
+* F8 5 | | 20 Xtal Out
+* F10 6 | | 19 F16
+* F9 7 | MC14411 | 18 F15
+* F11 8 | | 17 F2
+* F14 9 | | 16 F4
+* Reset* 10 | | 15 F6
+* Not Used 11 | | 14 F12
+* VSS 12 |_____________| 13 F13
+*
+*
+* +----------+-------Output Rates (Hz)-------+
+* | Output | Rate Select B and A pins |
+* | Number | X64 11| X16 10| X8 01 | X1 00 |
+* |----------+-------------------------------+
+* | Fl | 614.4k| 153.6k| 76.8k| 9600 |
+* | F2 | 46O.8k| 115.2k| 57.6k| 7200 |
+* | F3 | 3O7.2k| 76.8k| 38.4k| 4800 |
+* | F4 | 23O.4k| 57.6k| 28.8k| 3600 |
+* | F5 | 153.6k| 38.4k| 19.2k| 2400 |
+* | F6 | 115.2k| 28.8k| 14.4k| 1800 |
+* | F7 | 76.8k| 19.2k| 9600 | 1200 |
+* | FS | 38.4k| 9600 | 4800 | 600 |
+* | F9 | 19.2k| 4800 | 2400 | 300 |
+* | F1O | 12.8k| 3200 | 1600 | 200 |
+* | Fll | 9600 | 2400 | 1200 | 150 |
+* | F12 | 8613.2| 2153.3| 1076.6| 134.5|
+* | F13 | 7035.5| 1758.8| 879.4| 109.9|
+* | F14 | 4800 | 1200 | 600 | 75 |
+* | F15 | 921.6k| 921.6k| 921.6k| 921.6k|
+* | F16 | 1.843M| 1.843M| 1.843M| 1.843M|
+* +------------------------------------------+
+* - F16 is a buffered oscillator output
+*
+* The device is designed to work with 1.843MHz crystal so it is assumed that
+* an external clock source attached to pin 21 is also fixed thus not need to
+* interface through a callback interface.
+**********************************************************************/
+
+#ifndef MAME_MACHINE_MC14411_H
+#define MAME_MACHINE_MC14411_H
+
+#pragma once
+
+//**************************************************************************
+// DEVICE CONFIGURATION MACROS
+//**************************************************************************
+#define MCFG_MC14411_ADD(_tag, _clock) MCFG_DEVICE_ADD(_tag, MC14411, _clock)
+
+#define MCFG_MC14411_F1_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 0, DEVCB_##_devcb);
+#define MCFG_MC14411_F2_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 1, DEVCB_##_devcb);
+#define MCFG_MC14411_F3_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 2, DEVCB_##_devcb);
+#define MCFG_MC14411_F4_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 3, DEVCB_##_devcb);
+#define MCFG_MC14411_F5_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 4, DEVCB_##_devcb);
+#define MCFG_MC14411_F6_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 5, DEVCB_##_devcb);
+#define MCFG_MC14411_F7_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 6, DEVCB_##_devcb);
+#define MCFG_MC14411_F8_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 7, DEVCB_##_devcb);
+#define MCFG_MC14411_F9_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 8, DEVCB_##_devcb);
+#define MCFG_MC14411_F10_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 9, DEVCB_##_devcb);
+#define MCFG_MC14411_F11_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 10, DEVCB_##_devcb);
+#define MCFG_MC14411_F12_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 11, DEVCB_##_devcb);
+#define MCFG_MC14411_F13_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 12, DEVCB_##_devcb);
+#define MCFG_MC14411_F14_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 13, DEVCB_##_devcb);
+#define MCFG_MC14411_F15_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 14, DEVCB_##_devcb);
+#define MCFG_MC14411_F16_CB(_devcb) devcb = &mc14411_device::set_out_fx_cb(*device, 15, DEVCB_##_devcb);
+
+#define MCFG_MC14411_RSA 0x01
+#define MCFG_MC14411_RSB 0x02
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+class mc14411_device : public device_t
+{
+public:
+ // construction/destruction
+ mc14411_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+ template <class Object> static devcb_base &set_out_fx_cb(device_t &device, int index, Object &&cb) { return downcast<mc14411_device &>(device).m_out_fx_cbs[index].set_callback(std::forward<Object>(cb)); }
+
+ DECLARE_WRITE_LINE_MEMBER(reset_w);
+ DECLARE_WRITE8_MEMBER(rate_select_w);
+
+protected:
+ mc14411_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
+
+ // device-level overrides
+ virtual void device_start() override;
+ virtual void device_reset() override;
+ virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
+
+private:
+ // timers
+ enum // indexes
+ {
+ F1 = 0,
+ F2 = 1,
+ F3 = 2,
+ F4 = 3,
+ F5 = 4,
+ F6 = 5,
+ F7 = 6,
+ F8 = 7,
+ F9 = 8,
+ F10 = 9,
+ F11 = 10,
+ F12 = 11,
+ F13 = 12,
+ F14 = 13,
+ F15 = 14,
+ F16 = 15
+ };
+
+ emu_timer *m_fx_timer[16];
+
+ enum
+ {
+ TIMER_ID_RESET = 16
+ };
+ emu_timer *m_reset_timer;
+
+ // F1-F16 Output line states
+ uint32_t m_fx_state[16];
+
+ // divider matrix
+ static const int counter_divider[16][4];
+
+ devcb_write_line m_out_fx_cbs[16];
+
+ uint32_t m_divider; // main divider to use, 0-3 column index into counter_divider
+ uint32_t m_reset; // Reset line state
+};
+
+// device type definition
+DECLARE_DEVICE_TYPE(MC14411, mc14411_device)
+
+#endif // MAME_MACHINE_MC14411_H