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author AJR <ajrhacker@users.noreply.github.com>2018-02-12 00:10:12 -0500
committer AJR <ajrhacker@users.noreply.github.com>2018-02-12 00:11:39 -0500
commitb9ec50f4fca9cfbf75ec434edaf05e00bb86f6a0 (patch)
treeae9c7175f57f08c42fc5895f5242da53bd20b046 /src/devices/machine/com8116.cpp
parent9512e9be9b5847609b194a658ca35cf6827b710f (diff)
com8116: Add several clock rate/divisor table variant types
Diffstat (limited to 'src/devices/machine/com8116.cpp')
-rw-r--r--src/devices/machine/com8116.cpp64
1 files changed, 45 insertions, 19 deletions
diff --git a/src/devices/machine/com8116.cpp b/src/devices/machine/com8116.cpp
index 1569e83176a..9c23104f414 100644
--- a/src/devices/machine/com8116.cpp
+++ b/src/devices/machine/com8116.cpp
@@ -9,7 +9,9 @@
#include "emu.h"
#include "com8116.h"
-//#define VERBOSE 1
+#define LOG_SELECTED (1 << 0)
+#define LOG_TABLE (1 << 1)
+//#define VERBOSE (LOG_TABLE)
#include "logmacro.h"
@@ -20,6 +22,9 @@
// device type definition
DEFINE_DEVICE_TYPE(COM8116, com8116_device, "com8116", "COM8116 Dual BRG")
+DEFINE_DEVICE_TYPE(COM8116_003, com8116_003_device, "com8116_003", "COM8116-003 Dual BRG")
+DEFINE_DEVICE_TYPE(COM5016_5, com5016_5_device, "com5016_5", "COM5016-5 Dual BRG")
+DEFINE_DEVICE_TYPE(COM5016_013, com5016_013_device, "com5016_013", "COM5016-013 Dual BRG")
// Parts with T after the number do not have an internal oscillator and require an external clock source
// The SMC/COM 5xxx parts are all dual 5v/12v parts, while the 8xxx parts are 5v only
@@ -29,53 +34,53 @@ DEFINE_DEVICE_TYPE(COM8116, com8116_device, "com8116", "COM8116 Dual BRG")
// and Motorola K1135A/B (K1135B outputs undivided 5.0688 MHz on pin 1)
// SMC/COM8156(T) is the same chip but clocked twice as fast and 32x clocks per baud instead of 16x
// baud rates are 50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2000, 2400, 3600, 4800, 7200, 9600, 19200
-const int com8116_device::divisors_16X_5_0688MHz[] =
+const int com8116_device::divisors_16X_5_0688MHz[16] =
{ 6336, 4224, 2880, 2355, 2112, 1056, 528, 264, 176, 158, 132, 88, 66, 44, 33, 16 };
// SMC/COM8116-003
// from http://www.vintagecomputer.net/fjkraan/comp/divcomp/doc/SMC_BaudGen.pdf page 283 (pdf page 20)
// baud rates are 50, 75, 110, 134.5, 150, 200, 300, 600, 1200, 1800, 2000, 2400, 3600, 4800, 9600, 19200
// SMC/COM8116T-020 should have similar output rates, but clock is unknown and probably different
-const int com8116_device::divisors_16X_6_01835MHz[] =
+const int com8116_device::divisors_16X_6_01835MHz[16] =
{ 7523, 5015, 3420, 2797, 2508, 1881, 1254, 627, 313, 209, 188, 157, 104, 78, 39, 20 };
// 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
// SMC/COM8156(T)-5 is the same chip but clocked twice as fast and 32x clocks per baud instead of 16x
// Motorola K1135C is similar, with undivided 4.9152 MHz on pin 1
// baud rates are 50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2000, 2400, 3600, 4800, 7200, 9600, 19200
-const int com8116_device::divisors_16X_4_9152MHz[] =
+const int com8116_device::divisors_16X_4_9152MHz[16] =
{ 6144, 4096, 2793, 2284, 2048, 1024, 512, 256, 171, 154, 128, 85, 64, 43, 32, 16 };
// SMC/COM5016(T)-6 and WD WD-1943-06
// baud rates are 50, 75, 110, 134.5, 150, 200, 300, 600, 1200, 1800, 2400, 3600, 4800, 7200, 9600, 19200
-const int com8116_device::divisors_32X_5_0688MHz[] =
+const int com8116_device::divisors_32X_5_0688MHz[16] =
{ 3168, 2112, 1440, 1177, 1056, 792, 528, 264, 132, 88, 66, 44, 33, 22, 16, 8 };
// 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))
// and from http://www.vintagecomputer.net/fjkraan/comp/divcomp/doc/SMC_BaudGen.pdf page 283 (pdf page 20)
// SMC/COM5106-013A is the same chip clocked twice as fast, but with 32x clocks per baud instead of 16x
// baud rates are 50, 75, 110, 134.5, 150, 200, 300, 600, 1200, 1800, 2000, 2400, 3600, 4800, 9600, 19200
-const int com8116_device::divisors_16X_2_7648MHz[] =
+const int com8116_device::divisors_16X_2_7648MHz[16] =
{ 3456, 2304, 1571, 1285, 1152, 864, 576, 288, 144, 96, 86, 72, 48, 36, 18, 9 };
// SMC/COM5026(T)-030 (non-standard serial rates, from http://bitsavers.informatik.uni-stuttgart.de/pdf/standardMicrosystems/_dataBooks/1979_StandardMicrosystems.pdf page 135)
-const int com8116_device::divisors_16X_5_0688MHz_030[] =
+const int com8116_device::divisors_16X_5_0688MHz_030[16] =
{ 731, 733, 735, 737, 741, 743, 745, 751, 6970, 5569, 5433, 4752, 4269, 1920, 1584, 301 };
// SMC/COM5036(T)-080 (from http://bitsavers.informatik.uni-stuttgart.de/pdf/standardMicrosystems/_dataBooks/1979_StandardMicrosystems.pdf page 135)
-const int com8116_device::divisors_16X_4_6080MHz[] =
+const int com8116_device::divisors_16X_4_6080MHz[16] =
{ 5760, 3840, 2618, 2141, 1920, 960, 480, 240, 160, 144, 120, 80, 60, 40, 30, 15 };
// COM8046 combines the -6 and STD tables into one device as a 32-entry table
// 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))
// baud rates are 50, 75, 110, 134.5, 150, 200, 300, 600, 1050, 1200, 1800, 2000, 2400, 4800, 9600, 19200
-const int com8116_device::divisors_16X_4_9152MHz_SY2661_1[] =
+const int com8116_device::divisors_16X_4_9152MHz_SY2661_1[16] =
{ 6144, 4096, 2793, 2284, 2048, 1536, 1024, 512, 292, 256, 171, 154, 128, 64, 32, 16 };
// 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))
// baud rates are 45.5, 50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2000, 2400, 4800, 9600, 19200, 38400
-const int com8116_device::divisors_16X_4_9152MHz_SY2661_2[] =
+const int com8116_device::divisors_16X_4_9152MHz_SY2661_2[16] =
{ 6752, 6144, 4096, 2793, 2284, 2048, 1024, 512, 256, 171, 154, 128, 64, 32, 16, 8 };
//**************************************************************************
@@ -86,11 +91,32 @@ const int com8116_device::divisors_16X_4_9152MHz_SY2661_2[] =
// com8116_device - constructor
//-------------------------------------------------
-com8116_device::com8116_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
- device_t(mconfig, COM8116, tag, owner, clock),
+com8116_device::com8116_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock, const int *divisors) :
+ device_t(mconfig, type, tag, owner, clock),
m_fx4_handler(*this),
m_fr_handler(*this),
- m_ft_handler(*this)
+ m_ft_handler(*this),
+ m_divisors(divisors)
+{
+}
+
+com8116_device::com8116_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+ com8116_device(mconfig, COM8116, tag, owner, clock, divisors_16X_5_0688MHz)
+{
+}
+
+com8116_003_device::com8116_003_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+ com8116_device(mconfig, COM8116_003, tag, owner, clock, divisors_16X_6_01835MHz)
+{
+}
+
+com5016_5_device::com5016_5_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+ com8116_device(mconfig, COM5016_5, tag, owner, clock, divisors_16X_4_9152MHz)
+{
+}
+
+com5016_013_device::com5016_013_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+ com8116_device(mconfig, COM5016_013, tag, owner, clock, divisors_16X_2_7648MHz)
{
}
@@ -112,8 +138,8 @@ void com8116_device::device_start()
m_fr_timer = timer_alloc(TIMER_FR);
m_ft_timer = timer_alloc(TIMER_FT);
- m_fr_divisors = divisors_16X_5_0688MHz;
- m_ft_divisors = divisors_16X_5_0688MHz;
+ for (int i = 0; i < 16; i++)
+ LOGMASKED(LOG_TABLE, "Output Frequency %01X: 16X %f Hz\n", i, double(clock()) / m_divisors[i] / 16.0);
// register for state saving
save_item(NAME(m_fx4));
@@ -167,9 +193,9 @@ void com8116_device::device_timer(emu_timer &timer, device_timer_id id, int para
void com8116_device::str_w(uint8_t data)
{
int fr_divider = data & 0x0f;
- int fr_clock = clock() / m_fr_divisors[fr_divider];
+ int fr_clock = clock() / m_divisors[fr_divider];
- LOG("COM8116 Receiver Divisor Select %01x: %u (%u Hz)\n", data & 0x0f, m_fr_divisors[fr_divider], fr_clock);
+ LOGMASKED(LOG_SELECTED, "Receiver Divisor Select %01X: %u (%u Hz)\n", data & 0x0f, m_divisors[fr_divider], fr_clock);
m_fr_timer->adjust(attotime::from_nsec(3500), 0, attotime::from_hz(fr_clock * 2));
}
@@ -187,9 +213,9 @@ WRITE8_MEMBER( com8116_device::str_w )
void com8116_device::stt_w(uint8_t data)
{
int ft_divider = data & 0x0f;
- int ft_clock = clock() / m_ft_divisors[ft_divider];
+ int ft_clock = clock() / m_divisors[ft_divider];
- LOG("COM8116 Transmitter Divisor Select %01x: %u (%u Hz)\n", data & 0x0f, m_ft_divisors[ft_divider], ft_clock);
+ LOGMASKED(LOG_SELECTED, "Transmitter Divisor Select %01X: %u (%u Hz)\n", data & 0x0f, m_divisors[ft_divider], ft_clock);
m_ft_timer->adjust(attotime::from_nsec(3500), 0, attotime::from_hz(ft_clock * 2));
}