mirror of
https://github.com/holub/mame
synced 2025-04-21 07:52:35 +03:00
com8116: Add several clock rate/divisor table variant types
This commit is contained in:
AJR
parent
9512e9be9b
commit
b9ec50f4fc
@ -9,7 +9,9 @@
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#include "emu.h"
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#include "com8116.h"
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//#define VERBOSE 1
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#define LOG_SELECTED (1 << 0)
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#define LOG_TABLE (1 << 1)
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//#define VERBOSE (LOG_TABLE)
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#include "logmacro.h"
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@ -20,6 +22,9 @@
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// device type definition
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DEFINE_DEVICE_TYPE(COM8116, com8116_device, "com8116", "COM8116 Dual BRG")
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DEFINE_DEVICE_TYPE(COM8116_003, com8116_003_device, "com8116_003", "COM8116-003 Dual BRG")
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DEFINE_DEVICE_TYPE(COM5016_5, com5016_5_device, "com5016_5", "COM5016-5 Dual BRG")
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DEFINE_DEVICE_TYPE(COM5016_013, com5016_013_device, "com5016_013", "COM5016-013 Dual BRG")
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// Parts with T after the number do not have an internal oscillator and require an external clock source
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// The SMC/COM 5xxx parts are all dual 5v/12v parts, while the 8xxx parts are 5v only
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@ -29,53 +34,53 @@ DEFINE_DEVICE_TYPE(COM8116, com8116_device, "com8116", "COM8116 Dual BRG")
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// and Motorola K1135A/B (K1135B outputs undivided 5.0688 MHz on pin 1)
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// SMC/COM8156(T) is the same chip but clocked twice as fast and 32x clocks per baud instead of 16x
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// baud rates are 50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2000, 2400, 3600, 4800, 7200, 9600, 19200
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const int com8116_device::divisors_16X_5_0688MHz[] =
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const int com8116_device::divisors_16X_5_0688MHz[16] =
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{ 6336, 4224, 2880, 2355, 2112, 1056, 528, 264, 176, 158, 132, 88, 66, 44, 33, 16 };
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// SMC/COM8116-003
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// from http://www.vintagecomputer.net/fjkraan/comp/divcomp/doc/SMC_BaudGen.pdf page 283 (pdf page 20)
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// baud rates are 50, 75, 110, 134.5, 150, 200, 300, 600, 1200, 1800, 2000, 2400, 3600, 4800, 9600, 19200
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// SMC/COM8116T-020 should have similar output rates, but clock is unknown and probably different
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const int com8116_device::divisors_16X_6_01835MHz[] =
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const int com8116_device::divisors_16X_6_01835MHz[16] =
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{ 7523, 5015, 3420, 2797, 2508, 1881, 1254, 627, 313, 209, 188, 157, 104, 78, 39, 20 };
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// SMC/COM5016(T)-5 and WD WD-1943-05; Synertek SY2661-1 and 2 are NOT the same as this despite using same clock speed, see below
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// SMC/COM8156(T)-5 is the same chip but clocked twice as fast and 32x clocks per baud instead of 16x
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// Motorola K1135C is similar, with undivided 4.9152 MHz on pin 1
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// baud rates are 50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2000, 2400, 3600, 4800, 7200, 9600, 19200
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const int com8116_device::divisors_16X_4_9152MHz[] =
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const int com8116_device::divisors_16X_4_9152MHz[16] =
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{ 6144, 4096, 2793, 2284, 2048, 1024, 512, 256, 171, 154, 128, 85, 64, 43, 32, 16 };
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// SMC/COM5016(T)-6 and WD WD-1943-06
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// baud rates are 50, 75, 110, 134.5, 150, 200, 300, 600, 1200, 1800, 2400, 3600, 4800, 7200, 9600, 19200
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const int com8116_device::divisors_32X_5_0688MHz[] =
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const int com8116_device::divisors_32X_5_0688MHz[16] =
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{ 3168, 2112, 1440, 1177, 1056, 792, 528, 264, 132, 88, 66, 44, 33, 22, 16, 8 };
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// SMC/COM5016(T)-013 (from http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/terminal/vt100/EK-VT100-TM-003_VT100_Technical_Manual_Jul82.pdf page 4-27 (pdf page 78))
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// and from http://www.vintagecomputer.net/fjkraan/comp/divcomp/doc/SMC_BaudGen.pdf page 283 (pdf page 20)
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// SMC/COM5106-013A is the same chip clocked twice as fast, but with 32x clocks per baud instead of 16x
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// baud rates are 50, 75, 110, 134.5, 150, 200, 300, 600, 1200, 1800, 2000, 2400, 3600, 4800, 9600, 19200
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const int com8116_device::divisors_16X_2_7648MHz[] =
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const int com8116_device::divisors_16X_2_7648MHz[16] =
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{ 3456, 2304, 1571, 1285, 1152, 864, 576, 288, 144, 96, 86, 72, 48, 36, 18, 9 };
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// SMC/COM5026(T)-030 (non-standard serial rates, from http://bitsavers.informatik.uni-stuttgart.de/pdf/standardMicrosystems/_dataBooks/1979_StandardMicrosystems.pdf page 135)
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const int com8116_device::divisors_16X_5_0688MHz_030[] =
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const int com8116_device::divisors_16X_5_0688MHz_030[16] =
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{ 731, 733, 735, 737, 741, 743, 745, 751, 6970, 5569, 5433, 4752, 4269, 1920, 1584, 301 };
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// SMC/COM5036(T)-080 (from http://bitsavers.informatik.uni-stuttgart.de/pdf/standardMicrosystems/_dataBooks/1979_StandardMicrosystems.pdf page 135)
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const int com8116_device::divisors_16X_4_6080MHz[] =
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const int com8116_device::divisors_16X_4_6080MHz[16] =
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{ 5760, 3840, 2618, 2141, 1920, 960, 480, 240, 160, 144, 120, 80, 60, 40, 30, 15 };
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// COM8046 combines the -6 and STD tables into one device as a 32-entry table
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// Synertek SY2661-1 (from http://bitsavers.informatik.uni-stuttgart.de/pdf/synertek/_dataBooks/Synertek_1981-1982_Data_Catalog.pdf page 3-40 (pdf page 139))
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// baud rates are 50, 75, 110, 134.5, 150, 200, 300, 600, 1050, 1200, 1800, 2000, 2400, 4800, 9600, 19200
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const int com8116_device::divisors_16X_4_9152MHz_SY2661_1[] =
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const int com8116_device::divisors_16X_4_9152MHz_SY2661_1[16] =
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{ 6144, 4096, 2793, 2284, 2048, 1536, 1024, 512, 292, 256, 171, 154, 128, 64, 32, 16 };
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// Synertek SY2661-2 (from http://bitsavers.informatik.uni-stuttgart.de/pdf/synertek/_dataBooks/Synertek_1981-1982_Data_Catalog.pdf page 3-40 (pdf page 139))
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// baud rates are 45.5, 50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2000, 2400, 4800, 9600, 19200, 38400
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const int com8116_device::divisors_16X_4_9152MHz_SY2661_2[] =
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const int com8116_device::divisors_16X_4_9152MHz_SY2661_2[16] =
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{ 6752, 6144, 4096, 2793, 2284, 2048, 1024, 512, 256, 171, 154, 128, 64, 32, 16, 8 };
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//**************************************************************************
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@ -86,11 +91,32 @@ const int com8116_device::divisors_16X_4_9152MHz_SY2661_2[] =
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// com8116_device - constructor
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//-------------------------------------------------
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com8116_device::com8116_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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device_t(mconfig, COM8116, tag, owner, clock),
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com8116_device::com8116_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock, const int *divisors) :
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device_t(mconfig, type, tag, owner, clock),
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m_fx4_handler(*this),
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m_fr_handler(*this),
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m_ft_handler(*this)
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m_ft_handler(*this),
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m_divisors(divisors)
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{
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}
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com8116_device::com8116_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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com8116_device(mconfig, COM8116, tag, owner, clock, divisors_16X_5_0688MHz)
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{
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}
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com8116_003_device::com8116_003_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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com8116_device(mconfig, COM8116_003, tag, owner, clock, divisors_16X_6_01835MHz)
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{
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}
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com5016_5_device::com5016_5_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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com8116_device(mconfig, COM5016_5, tag, owner, clock, divisors_16X_4_9152MHz)
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{
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}
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com5016_013_device::com5016_013_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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com8116_device(mconfig, COM5016_013, tag, owner, clock, divisors_16X_2_7648MHz)
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{
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}
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@ -112,8 +138,8 @@ void com8116_device::device_start()
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m_fr_timer = timer_alloc(TIMER_FR);
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m_ft_timer = timer_alloc(TIMER_FT);
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m_fr_divisors = divisors_16X_5_0688MHz;
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m_ft_divisors = divisors_16X_5_0688MHz;
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for (int i = 0; i < 16; i++)
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LOGMASKED(LOG_TABLE, "Output Frequency %01X: 16X %f Hz\n", i, double(clock()) / m_divisors[i] / 16.0);
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// register for state saving
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save_item(NAME(m_fx4));
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@ -167,9 +193,9 @@ void com8116_device::device_timer(emu_timer &timer, device_timer_id id, int para
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void com8116_device::str_w(uint8_t data)
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{
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int fr_divider = data & 0x0f;
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int fr_clock = clock() / m_fr_divisors[fr_divider];
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int fr_clock = clock() / m_divisors[fr_divider];
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LOG("COM8116 Receiver Divisor Select %01x: %u (%u Hz)\n", data & 0x0f, m_fr_divisors[fr_divider], fr_clock);
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LOGMASKED(LOG_SELECTED, "Receiver Divisor Select %01X: %u (%u Hz)\n", data & 0x0f, m_divisors[fr_divider], fr_clock);
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m_fr_timer->adjust(attotime::from_nsec(3500), 0, attotime::from_hz(fr_clock * 2));
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}
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@ -187,9 +213,9 @@ WRITE8_MEMBER( com8116_device::str_w )
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void com8116_device::stt_w(uint8_t data)
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{
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int ft_divider = data & 0x0f;
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int ft_clock = clock() / m_ft_divisors[ft_divider];
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int ft_clock = clock() / m_divisors[ft_divider];
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LOG("COM8116 Transmitter Divisor Select %01x: %u (%u Hz)\n", data & 0x0f, m_ft_divisors[ft_divider], ft_clock);
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LOGMASKED(LOG_SELECTED, "Transmitter Divisor Select %01X: %u (%u Hz)\n", data & 0x0f, m_divisors[ft_divider], ft_clock);
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m_ft_timer->adjust(attotime::from_nsec(3500), 0, attotime::from_hz(ft_clock * 2));
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}
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@ -65,15 +65,17 @@ public:
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DECLARE_WRITE8_MEMBER( stt_w );
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protected:
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static const int divisors_16X_5_0688MHz[];
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static const int divisors_16X_6_01835MHz[];
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static const int divisors_16X_4_9152MHz[];
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static const int divisors_32X_5_0688MHz[];
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static const int divisors_16X_2_7648MHz[];
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static const int divisors_16X_5_0688MHz_030[];
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static const int divisors_16X_4_6080MHz[];
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static const int divisors_16X_4_9152MHz_SY2661_1[];
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static const int divisors_16X_4_9152MHz_SY2661_2[];
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com8116_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock, const int *divisors);
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static const int divisors_16X_5_0688MHz[16];
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static const int divisors_16X_6_01835MHz[16];
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static const int divisors_16X_4_9152MHz[16];
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static const int divisors_32X_5_0688MHz[16];
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static const int divisors_16X_2_7648MHz[16];
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static const int divisors_16X_5_0688MHz_030[16];
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static const int divisors_16X_4_6080MHz[16];
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static const int divisors_16X_4_9152MHz_SY2661_1[16];
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static const int divisors_16X_4_9152MHz_SY2661_2[16];
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// device-level overrides
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virtual void device_start() override;
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@ -96,8 +98,7 @@ private:
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int m_fr;
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int m_ft;
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const int *m_fr_divisors;
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const int *m_ft_divisors;
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const int *const m_divisors;
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// timers
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emu_timer *m_fx4_timer;
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@ -106,7 +107,40 @@ private:
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};
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// ======================> com8116_003_device
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class com8116_003_device : public com8116_device
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{
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public:
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// construction/destruction
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com8116_003_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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};
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// ======================> com5016_5_device
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class com5016_5_device : public com8116_device
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{
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public:
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// construction/destruction
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com5016_5_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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};
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// ======================> com5016_013_device
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class com5016_013_device : public com8116_device
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{
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public:
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// construction/destruction
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com5016_013_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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};
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// device type definition
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DECLARE_DEVICE_TYPE(COM8116, com8116_device)
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DECLARE_DEVICE_TYPE(COM8116_003, com8116_003_device)
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DECLARE_DEVICE_TYPE(COM5016_5, com5016_5_device)
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DECLARE_DEVICE_TYPE(COM5016_013, com5016_013_device)
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#endif // MAME_MACHINE_COM8116_H
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@ -19,7 +19,7 @@ the PCB, which go so far as to include the standard 8224 clock generator.
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#include "emu.h"
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#include "cpu/z80/z80.h"
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#include "machine/ay31015.h"
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//#include "machine/com8116.h"
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#include "machine/com8116.h"
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#include "video/tms9927.h"
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#include "screen.h"
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@ -32,6 +32,7 @@ public:
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: driver_device(mconfig, type, tag)
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, m_maincpu(*this, "maincpu")
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, m_uart(*this, "uart")
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, m_dbrg(*this, "dbrg")
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, m_p_chargen(*this, "chargen")
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{ }
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@ -65,6 +66,7 @@ private:
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required_device<cpu_device> m_maincpu;
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required_device<ay31015_device> m_uart;
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required_device<com8116_device> m_dbrg;
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required_region_ptr<u8> m_p_chargen;
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};
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@ -88,7 +90,6 @@ WRITE8_MEMBER(ampex_state::write_5840)
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READ8_MEMBER(ampex_state::read_5841)
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{
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logerror("%s: Read from 5841\n", machine().describe_context());
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u8 result = m_uart->get_output_pin(AY31015_DAV) << 3;
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result |= m_uart->get_output_pin(AY31015_OR) << 4;
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result |= m_uart->get_output_pin(AY31015_PE) << 5;
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@ -212,6 +213,8 @@ MACHINE_CONFIG_START(ampex_state::ampex)
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MCFG_DEVICE_ADD("uart", AY31015, 0) // COM8017, actually
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MCFG_AY31015_STATUS_CHANGED_CB(WRITE8(ampex_state, uart_status_update))
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MCFG_DEVICE_ADD("dbrg", COM5016_5, XTAL(4'915'200))
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MACHINE_CONFIG_END
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ROM_START( dialog80 )
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@ -34,7 +34,6 @@
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#define RS232_TAG "rs232"
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#define COM5016T_TAG "com5016t"
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class vt100_state : public driver_device
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{
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@ -44,8 +43,7 @@ public:
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m_maincpu(*this, "maincpu"),
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m_crtc(*this, "vt100_video"),
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m_keyboard(*this, "keyboard"),
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m_uart(*this, "i8251"),
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m_dbrg(*this, COM5016T_TAG),
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m_dbrg(*this, "dbrg"),
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m_nvr(*this, "nvr"),
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m_p_ram(*this, "p_ram")
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{
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@ -54,7 +52,6 @@ public:
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required_device<cpu_device> m_maincpu;
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required_device<vt100_video_device> m_crtc;
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required_device<vt100_keyboard_device> m_keyboard;
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required_device<i8251_device> m_uart;
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required_device<com8116_device> m_dbrg;
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required_device<er1400_device> m_nvr;
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DECLARE_READ8_MEMBER(vt100_flags_r);
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@ -160,8 +157,8 @@ static ADDRESS_MAP_START(vt100_io, AS_IO, 8, vt100_state)
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ADDRESS_MAP_UNMAP_HIGH
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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// 0x00, 0x01 PUSART (Intel 8251)
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AM_RANGE (0x00, 0x00) AM_DEVREADWRITE("i8251", i8251_device, data_r, data_w)
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AM_RANGE (0x01, 0x01) AM_DEVREADWRITE("i8251", i8251_device, status_r, control_w)
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AM_RANGE (0x00, 0x00) AM_DEVREADWRITE("pusart", i8251_device, data_r, data_w)
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AM_RANGE (0x01, 0x01) AM_DEVREADWRITE("pusart", i8251_device, status_r, control_w)
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// 0x02 Baud rate generator
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AM_RANGE (0x02, 0x02) AM_WRITE(vt100_baud_rate_w)
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// 0x22 Modem buffer
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@ -259,7 +256,7 @@ GFXDECODE_END
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MACHINE_CONFIG_START(vt100_state::vt100)
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu",I8080, XTAL(24'883'200) / 9)
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MCFG_CPU_ADD("maincpu", I8080, XTAL(24'883'200) / 9)
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MCFG_CPU_PROGRAM_MAP(vt100_mem)
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MCFG_CPU_IO_MAP(vt100_io)
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MCFG_CPU_IRQ_ACKNOWLEDGE_DRIVER(vt100_state,vt100_irq_callback)
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@ -283,18 +280,18 @@ MACHINE_CONFIG_START(vt100_state::vt100)
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MCFG_VT_VIDEO_VERT_FREQ_INTR_CALLBACK(WRITELINE(vt100_state, vert_freq_intr_w))
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MCFG_VT_VIDEO_LBA7_CALLBACK(DEVWRITELINE("nvr", er1400_device, clock_w))
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MCFG_DEVICE_ADD("i8251", I8251, 0) // 2.7648Mhz phi-clock (not used for tx clock or rx clock?)
|
||||
MCFG_DEVICE_ADD("pusart", I8251, XTAL(24'883'200) / 9)
|
||||
MCFG_I8251_TXD_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_txd))
|
||||
MCFG_I8251_DTR_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_dtr))
|
||||
MCFG_I8251_RTS_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_rts))
|
||||
|
||||
MCFG_RS232_PORT_ADD(RS232_TAG, default_rs232_devices, nullptr)
|
||||
MCFG_RS232_RXD_HANDLER(DEVWRITELINE("i8251", i8251_device, write_rxd))
|
||||
MCFG_RS232_DSR_HANDLER(DEVWRITELINE("i8251", i8251_device, write_dsr))
|
||||
MCFG_RS232_RXD_HANDLER(DEVWRITELINE("pusart", i8251_device, write_rxd))
|
||||
MCFG_RS232_DSR_HANDLER(DEVWRITELINE("pusart", i8251_device, write_dsr))
|
||||
|
||||
MCFG_DEVICE_ADD(COM5016T_TAG, COM8116, 5068800/*XTAL(24'883'200) / 9*/) // COM5016T-013, 2.7648Mhz Clock, currently hacked wrongly
|
||||
MCFG_COM8116_FR_HANDLER(DEVWRITELINE("i8251", i8251_device, write_rxc))
|
||||
MCFG_COM8116_FT_HANDLER(DEVWRITELINE("i8251", i8251_device, write_txc))
|
||||
MCFG_DEVICE_ADD("dbrg", COM5016_013, XTAL(24'883'200) / 9) // COM5016T-013, 2.7648Mhz Clock
|
||||
MCFG_COM8116_FR_HANDLER(DEVWRITELINE("pusart", i8251_device, write_rxc))
|
||||
MCFG_COM8116_FT_HANDLER(DEVWRITELINE("pusart", i8251_device, write_txc))
|
||||
|
||||
MCFG_DEVICE_ADD("nvr", ER1400, 0)
|
||||
|
||||
@ -313,6 +310,13 @@ MACHINE_CONFIG_DERIVED(vt100_state::vt102, vt100)
|
||||
MCFG_CPU_PROGRAM_MAP(vt100_mem)
|
||||
MCFG_CPU_IO_MAP(vt100_io)
|
||||
MCFG_CPU_IRQ_ACKNOWLEDGE_DRIVER(vt100_state,vt100_irq_callback)
|
||||
|
||||
MCFG_DEVICE_MODIFY("pusart")
|
||||
MCFG_DEVICE_CLOCK(XTAL(24'073'400) / 8)
|
||||
|
||||
MCFG_DEVICE_REPLACE("dbrg", COM8116_003, XTAL(24'073'400) / 4)
|
||||
MCFG_COM8116_FR_HANDLER(DEVWRITELINE("pusart", i8251_device, write_rxc))
|
||||
MCFG_COM8116_FT_HANDLER(DEVWRITELINE("pusart", i8251_device, write_txc))
|
||||
MACHINE_CONFIG_END
|
||||
|
||||
/* VT1xx models:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user