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Diffstat (limited to 'src/devices/machine/z80scc.cpp')
-rw-r--r--src/devices/machine/z80scc.cpp472
1 files changed, 319 insertions, 153 deletions
diff --git a/src/devices/machine/z80scc.cpp b/src/devices/machine/z80scc.cpp
index ebdef5e346b..af412fec149 100644
--- a/src/devices/machine/z80scc.cpp
+++ b/src/devices/machine/z80scc.cpp
@@ -90,8 +90,9 @@ DONE (x) (p=partly) NMOS CMOS ESCC EMSCC
#define LOG_DCD (1U << 8)
#define LOG_SYNC (1U << 9)
-//#define VERBOSE (LOG_INT|LOG_READ|LOG_SETUP|LOG_TX|LOG_CMD)
-//#define LOG_OUTPUT_FUNC printf
+//#define VERBOSE (LOG_TX)
+//#define LOG_OUTPUT_STREAM std::cout
+
#include "logmacro.h"
#define LOGSETUP(...) LOGMASKED(LOG_SETUP, __VA_ARGS__)
@@ -111,10 +112,8 @@ DONE (x) (p=partly) NMOS CMOS ESCC EMSCC
#ifdef _MSC_VER
#define FUNCNAME __func__
-#define LLFORMAT "%I64d"
#else
#define FUNCNAME __PRETTY_FUNCTION__
-#define LLFORMAT "%lld"
#endif
/* LOCAL _BRG is set in z80scc.h, local timer based BRG is not complete and will be removed if not needed for synchrounous mode */
@@ -129,6 +128,231 @@ DONE (x) (p=partly) NMOS CMOS ESCC EMSCC
#define CHANA_TAG "cha"
#define CHANB_TAG "chb"
+enum : uint8_t
+{
+ RR0_RX_CHAR_AVAILABLE = 0x01,
+ RR0_ZC = 0x02,
+ RR0_TX_BUFFER_EMPTY = 0x04,
+ RR0_DCD = 0x08,
+ RR0_SYNC_HUNT = 0x10,
+ RR0_CTS = 0x20,
+ RR0_TX_UNDERRUN = 0x40,
+ RR0_BREAK_ABORT = 0x80
+};
+
+enum : uint8_t
+{
+ RR1_ALL_SENT = 0x01,
+ RR1_RESIDUE_CODE_MASK = 0x0e,
+ RR1_PARITY_ERROR = 0x10,
+ RR1_RX_OVERRUN_ERROR = 0x20,
+ RR1_CRC_FRAMING_ERROR = 0x40,
+ RR1_END_OF_FRAME = 0x80
+};
+
+enum : uint8_t
+{
+ RR3_CHANB_EXT_IP = 0x01, // SCC IP pending registers
+ RR3_CHANB_TX_IP = 0x02, // only read in Channel A (for both channels)
+ RR3_CHANB_RX_IP = 0x04, // channel B return all zero
+ RR3_CHANA_EXT_IP = 0x08,
+ RR3_CHANA_TX_IP = 0x10,
+ RR3_CHANA_RX_IP = 0x20
+};
+
+// Universal Bus WR0 commands for 85X30
+enum : uint8_t
+{
+ WR0_REGISTER_MASK = 0x07,
+ WR0_COMMAND_MASK = 0x38, // COMMANDS
+ WR0_NULL = 0x00, // 0 0 0
+ WR0_POINT_HIGH = 0x08, // 0 0 1
+ WR0_RESET_EXT_STATUS = 0x10, // 0 1 0
+ WR0_SEND_ABORT = 0x18, // 0 1 1
+ WR0_ENABLE_INT_NEXT_RX = 0x20, // 1 0 0
+ WR0_RESET_TX_INT = 0x28, // 1 0 1
+ WR0_ERROR_RESET = 0x30, // 1 1 0
+ WR0_RESET_HIGHEST_IUS = 0x38, // 1 1 1
+ WR0_CRC_RESET_CODE_MASK = 0xc0, // RESET
+ WR0_CRC_RESET_NULL = 0x00, // 0 0
+ WR0_CRC_RESET_RX = 0x40, // 0 1
+ WR0_CRC_RESET_TX = 0x80, // 1 0
+ WR0_CRC_RESET_TX_UNDERRUN = 0xc0 // 1 1
+};
+
+enum : uint8_t // ZBUS WR0 commands or 80X30
+{
+ WR0_Z_COMMAND_MASK = 0x38, // COMMANDS
+ WR0_Z_NULL_1 = 0x00, // 0 0 0
+ WR0_Z_NULL_2 = 0x08, // 0 0 1
+ WR0_Z_RESET_EXT_STATUS = 0x10, // 0 1 0
+ WR0_Z_SEND_ABORT = 0x18, // 0 1 1
+ WR0_Z_ENABLE_INT_NEXT_RX = 0x20, // 1 0 0
+ WR0_Z_RESET_TX_INT = 0x28, // 1 0 1
+ WR0_Z_ERROR_RESET = 0x30, // 1 1 0
+ WR0_Z_RESET_HIGHEST_IUS = 0x38, // 1 1 1
+ WR0_Z_SHIFT_MASK = 0x03, // SHIFT mode SDLC chan B
+ WR0_Z_SEL_SHFT_LEFT = 0x02, // 1 0
+ WR0_Z_SEL_SHFT_RIGHT = 0x03 // 1 1
+};
+
+enum : uint8_t
+{
+ WR1_EXT_INT_ENABLE = 0x01,
+ WR1_TX_INT_ENABLE = 0x02,
+ WR1_PARITY_IS_SPEC_COND = 0x04,
+ WR1_RX_INT_MODE_MASK = 0x18,
+ WR1_RX_INT_DISABLE = 0x00,
+ WR1_RX_INT_FIRST = 0x08,
+ WR1_RX_INT_ALL = 0x10,
+ WR1_RX_INT_PARITY = 0x18,
+ WR1_WREQ_ON_RX_TX = 0x20,
+ WR1_WREQ_FUNCTION = 0x40,
+ WR1_WREQ_ENABLE = 0x80
+};
+
+enum : uint8_t
+{
+ WR3_RX_ENABLE = 0x01,
+ WR3_SYNC_CHAR_LOAD_INHIBIT = 0x02,
+ WR3_ADDRESS_SEARCH_MODE = 0x04,
+ WR3_RX_CRC_ENABLE = 0x08,
+ WR3_ENTER_HUNT_MODE = 0x10,
+ WR3_AUTO_ENABLES = 0x20,
+ WR3_RX_WORD_LENGTH_MASK = 0xc0,
+ WR3_RX_WORD_LENGTH_5 = 0x00,
+ WR3_RX_WORD_LENGTH_7 = 0x40,
+ WR3_RX_WORD_LENGTH_6 = 0x80,
+ WR3_RX_WORD_LENGTH_8 = 0xc0
+};
+
+enum : uint8_t
+{
+ WR4_PARITY_ENABLE = 0x01,
+ WR4_PARITY_EVEN = 0x02,
+ WR4_STOP_BITS_MASK = 0x0c,
+ WR4_STOP_BITS_1 = 0x04,
+ WR4_STOP_BITS_1_5 = 0x08,
+ WR4_STOP_BITS_2 = 0x0c,
+ WR4_SYNC_MODE_MASK = 0x30,
+ WR4_SYNC_MODE_8_BIT = 0x00,
+ WR4_SYNC_MODE_16_BIT = 0x10,
+ WR4_BIT4 = 0x10,
+ WR4_SYNC_MODE_SDLC = 0x20,
+ WR4_BIT5 = 0x20,
+ WR4_SYNC_MODE_EXT = 0x30,
+ WR4_CLOCK_RATE_MASK = 0xc0,
+ WR4_CLOCK_RATE_X1 = 0x00,
+ WR4_CLOCK_RATE_X16 = 0x40,
+ WR4_CLOCK_RATE_X32 = 0x80,
+ WR4_CLOCK_RATE_X64 = 0xc0
+};
+
+enum : uint8_t
+{
+ WR5_TX_CRC_ENABLE = 0x01,
+ WR5_RTS = 0x02,
+ WR5_CRC16 = 0x04,
+ WR5_TX_ENABLE = 0x08,
+ WR5_SEND_BREAK = 0x10,
+ WR5_TX_WORD_LENGTH_MASK = 0x60,
+ WR5_TX_WORD_LENGTH_5 = 0x00,
+ WR5_TX_WORD_LENGTH_6 = 0x40,
+ WR5_TX_WORD_LENGTH_7 = 0x20,
+ WR5_TX_WORD_LENGTH_8 = 0x60,
+ WR5_DTR = 0x80
+};
+
+enum : uint8_t
+{
+ WR7P_TX_FIFO_EMPTY = 0x04
+};
+
+enum : uint8_t
+{
+ WR9_CMD_MASK = 0xC0,
+ WR9_CMD_NORESET = 0x00,
+ WR9_CMD_CHNB_RESET = 0x40,
+ WR9_CMD_CHNA_RESET = 0x80,
+ WR9_CMD_HW_RESET = 0xC0,
+ WR9_BIT_VIS = 0x01,
+ WR9_BIT_NV = 0x02,
+ WR9_BIT_DLC = 0x04,
+ WR9_BIT_MIE = 0x08,
+ WR9_BIT_SHSL = 0x10,
+ WR9_BIT_IACK = 0x20
+};
+
+enum : uint8_t
+{
+ WR10_8_6_BIT_SYNC = 0x01,
+ WR10_LOOP_MODE = 0x02,
+ WR10_ABORT_FLAG_UNDERRUN = 0x04,
+ WR10_MARK_FLAG_IDLE = 0x08,
+ WR10_GO_ACTIVE_ON_POLL = 0x10,
+ WR10_ENCODING_MASK = 0x60,
+ WR10_NRZ_ENCODING = 0x00,
+ WR10_NRZI_ENCODING = 0x20,
+ WR10_BIT5 = 0x20,
+ WR10_FM1_ENCODING = 0x40,
+ WR10_BIT6 = 0x40,
+ WR10_FM0_ENCODING = 0x60,
+ WR10_CRC_PRESET = 0x80
+};
+
+enum : uint8_t
+{
+ WR11_RCVCLK_TYPE = 0x80,
+ WR11_RCVCLK_SRC_MASK = 0x60, // RCV CLOCK
+ WR11_RCVCLK_SRC_RTXC = 0x00, // 0 0
+ WR11_RCVCLK_SRC_TRXC = 0x20, // 0 1
+ WR11_RCVCLK_SRC_BR = 0x40, // 1 0
+ WR11_RCVCLK_SRC_DPLL = 0x60, // 1 1
+ WR11_TRACLK_SRC_MASK = 0x18, // TRA CLOCK
+ WR11_TRACLK_SRC_RTXC = 0x00, // 0 0
+ WR11_TRACLK_SRC_TRXC = 0x08, // 0 1
+ WR11_TRACLK_SRC_BR = 0x10, // 1 0
+ WR11_TRACLK_SRC_DPLL = 0x18, // 1 1
+ WR11_TRXC_DIRECTION = 0x04,
+ WR11_TRXSRC_SRC_MASK = 0x03, // TRXX CLOCK
+ WR11_TRXSRC_SRC_XTAL = 0x00, // 0 0
+ WR11_TRXSRC_SRC_TRA = 0x01, // 0 1
+ WR11_TRXSRC_SRC_BR = 0x02, // 1 0
+ WR11_TRXSRC_SRC_DPLL = 0x03 // 1 1
+};
+
+enum : uint8_t
+{
+ WR14_DPLL_CMD_MASK = 0xe0, // Command
+ WR14_CMD_NULL = 0x00, // 0 0 0
+ WR14_CMD_ESM = 0x20, // 0 0 1
+ WR14_CMD_RMC = 0x40, // 0 1 0
+ WR14_CMD_DISABLE_DPLL = 0x60, // 0 1 1
+ WR14_CMD_SS_BRG = 0x80, // 1 0 0
+ WR14_CMD_SS_RTXC = 0xa0, // 1 0 1
+ WR14_CMD_SET_FM = 0xc0, // 1 1 0
+ WR14_CMD_SET_NRZI = 0xe0, // 1 1 1
+ WR14_BRG_ENABLE = 0x01,
+ WR14_BRG_SOURCE = 0x02,
+ WR14_DTR_REQ_FUNC = 0x04,
+ WR14_AUTO_ECHO = 0x08,
+ WR14_LOCAL_LOOPBACK = 0x10
+};
+
+enum : uint8_t
+{
+ WR15_WR7PRIME = 0x01,
+ WR15_ZEROCOUNT = 0x02,
+ WR15_STATUS_FIFO = 0x04,
+ WR15_DCD = 0x08,
+ WR15_SYNC = 0x10,
+ WR15_CTS = 0x20,
+ WR15_TX_EOM = 0x40,
+ WR15_BREAK_ABORT = 0x80
+};
+
+
+
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
@@ -157,10 +381,24 @@ MACHINE_CONFIG_END
// LIVE DEVICE
//**************************************************************************
+inline void z80scc_channel::out_txd_cb(int state)
+{
+ m_uart->m_out_txd_cb[m_index](state);
+}
+
+inline void z80scc_channel::out_rts_cb(int state)
+{
+ m_uart->m_out_rts_cb[m_index](state);
+}
+
+inline void z80scc_channel::out_dtr_cb(int state)
+{
+ m_uart->m_out_dtr_cb[m_index](state);
+}
+
//-------------------------------------------------
// z80scc_device - constructor
//-------------------------------------------------
-
z80scc_device::z80scc_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock, uint32_t variant)
: device_t(mconfig, type, tag, owner, clock),
device_z80daisy_interface(mconfig, *this),
@@ -170,21 +408,14 @@ z80scc_device::z80scc_device(const machine_config &mconfig, device_type type, co
m_txca(0),
m_rxcb(0),
m_txcb(0),
- m_out_txda_cb(*this),
- m_out_dtra_cb(*this),
- m_out_rtsa_cb(*this),
- m_out_wreqa_cb(*this),
- m_out_synca_cb(*this),
- m_out_txdb_cb(*this),
- m_out_dtrb_cb(*this),
- m_out_rtsb_cb(*this),
- m_out_wreqb_cb(*this),
- m_out_syncb_cb(*this),
+ m_out_txd_cb{ { *this }, { *this } },
+ m_out_dtr_cb{ { *this }, { *this } },
+ m_out_rts_cb{ { *this }, { *this } },
+ m_out_wreq_cb{ { *this }, { *this } },
+ m_out_sync_cb{ { *this }, { *this } },
+ m_out_rxdrq_cb{ { *this }, { *this } },
+ m_out_txdrq_cb{ { *this }, { *this } },
m_out_int_cb(*this),
- m_out_rxdrqa_cb(*this),
- m_out_txdrqa_cb(*this),
- m_out_rxdrqb_cb(*this),
- m_out_txdrqb_cb(*this),
m_variant(variant),
m_wr0_ptrbits(0),
m_cputag(nullptr)
@@ -239,28 +470,36 @@ scc8523l_device::scc8523l_device(const machine_config &mconfig, const char *tag,
}
//-------------------------------------------------
-// device_start - device-specific startup
+// device_resolve_objects - device-specific setup
//-------------------------------------------------
-
-void z80scc_device::device_start()
+void z80scc_device::device_resolve_objects()
{
- LOGSETUP("%s\n", FUNCNAME);
+ LOG("%s\n", FUNCNAME);
+
// resolve callbacks
- m_out_txda_cb.resolve_safe();
- m_out_dtra_cb.resolve_safe();
- m_out_rtsa_cb.resolve_safe();
- m_out_wreqa_cb.resolve_safe();
- m_out_synca_cb.resolve_safe();
- m_out_txdb_cb.resolve_safe();
- m_out_dtrb_cb.resolve_safe();
- m_out_rtsb_cb.resolve_safe();
- m_out_wreqb_cb.resolve_safe();
- m_out_syncb_cb.resolve_safe();
+ m_out_txd_cb[CHANNEL_A].resolve_safe();
+ m_out_dtr_cb[CHANNEL_A].resolve_safe();
+ m_out_rts_cb[CHANNEL_A].resolve_safe();
+ m_out_wreq_cb[CHANNEL_A].resolve_safe();
+ m_out_sync_cb[CHANNEL_A].resolve_safe();
+ m_out_txd_cb[CHANNEL_B].resolve_safe();
+ m_out_dtr_cb[CHANNEL_B].resolve_safe();
+ m_out_rts_cb[CHANNEL_B].resolve_safe();
+ m_out_wreq_cb[CHANNEL_B].resolve_safe();
+ m_out_sync_cb[CHANNEL_B].resolve_safe();
+ m_out_rxdrq_cb[CHANNEL_A].resolve_safe();
+ m_out_txdrq_cb[CHANNEL_A].resolve_safe();
+ m_out_rxdrq_cb[CHANNEL_B].resolve_safe();
+ m_out_txdrq_cb[CHANNEL_B].resolve_safe();
m_out_int_cb.resolve_safe();
- m_out_rxdrqa_cb.resolve_safe();
- m_out_txdrqa_cb.resolve_safe();
- m_out_rxdrqb_cb.resolve_safe();
- m_out_txdrqb_cb.resolve_safe();
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+void z80scc_device::device_start()
+{
+ LOG("%s", FUNCNAME);
// state saving
save_item(NAME(m_int_state));
@@ -274,16 +513,15 @@ void z80scc_device::device_start()
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
-
void z80scc_device::device_reset()
{
- LOGSETUP("%s %s \n",tag(), FUNCNAME);
+ LOG("%s %s \n",tag(), FUNCNAME);
// Do channel reset on both channels
m_chanA->reset();
m_chanB->reset();
- // Fix hardware reset values for registers where it differs from channel reset values
+ // Hardware reset values for registers where it differs from channel reset values
m_wr9 &= 0x3c;
m_wr9 |= 0xc0;
m_chanA->m_wr10 = 0x00;
@@ -358,7 +596,7 @@ int z80scc_device::z80daisy_irq_state()
}
// Last chance to keep the control of the interrupt line
- state |= (m_wr9 & z80scc_channel::WR9_BIT_DLC) ? Z80_DAISY_IEO : 0;
+ state |= (m_wr9 & WR9_BIT_DLC) ? Z80_DAISY_IEO : 0;
LOGINT("- Interrupt State %u\n", state);
@@ -383,7 +621,7 @@ int z80scc_device::z80daisy_irq_ack()
elem = Z80_DAISY_IEO; // Set IUS bit (called IEO in z80 daisy lingo)
check_interrupts();
LOGINT(" - Found an INT request, ");
- if (m_wr9 & z80scc_channel::WR9_BIT_VIS)
+ if (m_wr9 & WR9_BIT_VIS)
{
LOGINT("but WR9 D1 set to use autovector, returning the default vector\n");
break;
@@ -429,7 +667,6 @@ void z80scc_device::z80daisy_irq_reti()
//-------------------------------------------------
// check_interrupts -
//-------------------------------------------------
-
void z80scc_device::check_interrupts()
{
int state = (z80daisy_irq_state() & Z80_DAISY_INT) ? ASSERT_LINE : CLEAR_LINE;
@@ -441,7 +678,6 @@ void z80scc_device::check_interrupts()
//-------------------------------------------------
// reset_interrupts -
//-------------------------------------------------
-
void z80scc_device::reset_interrupts()
{
LOGINT("%s %s \n",tag(), FUNCNAME);
@@ -476,7 +712,7 @@ uint8_t z80scc_device::modify_vector(uint8_t vec, int i, uint8_t src)
src |= (i == CHANNEL_A ? 0x04 : 0x00 );
// Modify vector according to Hi/lo bit of WR9
- if (m_wr9 & z80scc_channel::WR9_BIT_SHSL) // Affect V4-V6
+ if (m_wr9 & WR9_BIT_SHSL) // Affect V4-V6
{
vec &= 0x8f;
vec |= src << 4;
@@ -518,7 +754,7 @@ void z80scc_device::trigger_interrupt(int index, int type)
LOGINT("%s %s:%c %02x \n",FUNCNAME, tag(), 'A' + index, type);
/* The Master Interrupt Enable (MIE) bit, WR9 D3, must be set to enable the SCC to generate interrupts.*/
- if (!(m_wr9 & z80scc_channel::WR9_BIT_MIE))
+ if (!(m_wr9 & WR9_BIT_MIE))
{
LOGINT("Master Interrupt Enable is not set, blocking attempt to interrupt\n");
return;
@@ -532,7 +768,7 @@ void z80scc_device::trigger_interrupt(int index, int type)
return;
}
// Vector modification requested?
- if (m_wr9 & z80scc_channel::WR9_BIT_VIS)
+ if (m_wr9 & WR9_BIT_VIS)
{
vector = modify_vector(vector, index, source);
}
@@ -597,7 +833,6 @@ int z80scc_device::update_extint(int index)
//-------------------------------------------------
// m1_r - interrupt acknowledge
//-------------------------------------------------
-
int z80scc_device::m1_r()
{
return z80daisy_irq_ack();
@@ -622,8 +857,8 @@ READ8_MEMBER( z80scc_device::zbus_r )
switch ((m_chanB->m_wr0) & 7)
{
- case z80scc_channel::WR0_Z_SEL_SHFT_LEFT: ba = offset & 0x01; reg = (offset >> 1) & 0x0f; break; /* Shift Left mode */
- case z80scc_channel::WR0_Z_SEL_SHFT_RIGHT: ba = offset & 0x10; reg = (offset >> 1) & 0x0f; break; /* Shift Right mode */
+ case WR0_Z_SEL_SHFT_LEFT: ba = offset & 0x01; reg = (offset >> 1) & 0x0f; break; /* Shift Left mode */
+ case WR0_Z_SEL_SHFT_RIGHT: ba = offset & 0x10; reg = (offset >> 1) & 0x0f; break; /* Shift Right mode */
default:
logerror("Malformed Z-bus SCC read: offset %02x WR0 bits %02x\n", offset, m_chanB->m_wr0);
LOG("Malformed Z-bus SCC read: offset %02x WR0 bits %02x\n", offset, m_chanB->m_wr0);
@@ -655,8 +890,8 @@ WRITE8_MEMBER( z80scc_device::zbus_w )
switch ((m_chanB->m_wr0) & 7)
{
- case z80scc_channel::WR0_Z_SEL_SHFT_LEFT: ba = offset & 0x01; reg = (offset >> 1) & 0x0f; break; /* Shift Left mode */
- case z80scc_channel::WR0_Z_SEL_SHFT_RIGHT: ba = offset & 0x10; reg = (offset >> 1) & 0x0f; break; /* Shift Right mode */
+ case WR0_Z_SEL_SHFT_LEFT: ba = offset & 0x01; reg = (offset >> 1) & 0x0f; break; /* Shift Left mode */
+ case WR0_Z_SEL_SHFT_RIGHT: ba = offset & 0x10; reg = (offset >> 1) & 0x0f; break; /* Shift Right mode */
default:
logerror("Malformed Z-bus SCC write: offset %02x WR0 bits %02x\n", offset, m_chanB->m_wr0);
LOG("Malformed Z-bus SCC write: offset %02x WR0 bits %02x\n", offset, m_chanB->m_wr0);
@@ -760,7 +995,6 @@ WRITE8_MEMBER( z80scc_device::cd_ba_w )
//-------------------------------------------------
// ba_cd_r - Universal Bus read
//-------------------------------------------------
-
READ8_MEMBER( z80scc_device::ba_cd_r )
{
int ba = BIT(offset, 1);
@@ -782,7 +1016,6 @@ READ8_MEMBER( z80scc_device::ba_cd_r )
//-------------------------------------------------
// ba_cd_w - Universal Bus write
//-------------------------------------------------
-
WRITE8_MEMBER( z80scc_device::ba_cd_w )
{
int ba = BIT(offset, 1);
@@ -807,7 +1040,6 @@ WRITE8_MEMBER( z80scc_device::ba_cd_w )
//-------------------------------------------------
// ba_cd_inv_r - Universal Bus read
//-------------------------------------------------
-
READ8_MEMBER( z80scc_device::ba_cd_inv_r )
{
int ba = BIT(offset, 1);
@@ -829,7 +1061,6 @@ READ8_MEMBER( z80scc_device::ba_cd_inv_r )
//-------------------------------------------------
// ba_cd_inv_w - Universal Bus read
//-------------------------------------------------
-
WRITE8_MEMBER( z80scc_device::ba_cd_inv_w )
{
int ba = BIT(offset, 1);
@@ -858,7 +1089,6 @@ WRITE8_MEMBER( z80scc_device::ba_cd_inv_w )
//-------------------------------------------------
// SCC_channel - constructor
//-------------------------------------------------
-
z80scc_channel::z80scc_channel(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, Z80SCC_CHANNEL, tag, owner, clock),
device_serial_interface(mconfig, *this),
@@ -906,7 +1136,6 @@ z80scc_channel::z80scc_channel(const machine_config &mconfig, const char *tag, d
//-------------------------------------------------
// start - channel startup
//-------------------------------------------------
-
void z80scc_channel::device_start()
{
LOGSETUP("%s\n", FUNCNAME);
@@ -987,7 +1216,6 @@ void z80scc_channel::device_start()
//-------------------------------------------------
// reset - reset channel status
//-------------------------------------------------
-
void z80scc_channel::device_reset()
{
LOGSETUP("%s\n", FUNCNAME);
@@ -1003,7 +1231,7 @@ void z80scc_channel::device_reset()
m_wr4 = 0x04;
m_wr5 = 0x00;
if (m_uart->m_variant & (z80scc_device::TYPE_SCC85C30 | z80scc_device::SET_ESCC))
- m_wr7 = 0x20;
+ m_wr7 = 0x20;
// WR9,WR10,WR11 and WR14 has a different hard reset (see z80scc_device::device_reset()) values
m_uart->m_wr9 &= 0xdf;
m_wr10 &= 0x60;
@@ -1020,9 +1248,8 @@ void z80scc_channel::device_reset()
m_rr10 &= 0x40;
// reset external lines
- set_rts(m_wr5 & WR5_RTS ? 0 : 1);
- set_dtr(m_wr14 & WR14_DTR_REQ_FUNC ? 0 : (m_wr5 & WR5_DTR ? 0 : 1));
-
+ out_rts_cb(m_rts = m_wr5 & WR5_RTS ? 0 : 1);
+ out_dtr_cb(m_dtr = m_wr14 & WR14_DTR_REQ_FUNC ? 0 : (m_wr5 & WR5_DTR ? 0 : 1));
// reset interrupts
if (m_index == z80scc_device::CHANNEL_A)
{
@@ -1067,50 +1294,38 @@ void z80scc_channel::device_timer(emu_timer &timer, device_timer_id id, int para
//-------------------------------------------------
// tra_callback -
//-------------------------------------------------
-
void z80scc_channel::tra_callback()
{
if (!(m_wr5 & WR5_TX_ENABLE))
{
- LOG(LLFORMAT " %s() \"%s \"Channel %c transmit mark 1 m_wr5:%02x\n", machine().firstcpu->total_cycles(), FUNCNAME, owner()->tag(), 'A' + m_index, m_wr5);
+ LOGTX("%s \"%s \"Channel %c transmit mark 1 m_wr5:%02x\n", FUNCNAME, owner()->tag(), 'A' + m_index, m_wr5);
// transmit mark
- if (m_index == z80scc_device::CHANNEL_A)
- m_uart->m_out_txda_cb(1);
- else
- m_uart->m_out_txdb_cb(1);
+ out_txd_cb(1);
}
else if (m_wr5 & WR5_SEND_BREAK)
{
- LOG(LLFORMAT " %s() \"%s \"Channel %c send break 1 m_wr5:%02x\n", machine().firstcpu->total_cycles(), FUNCNAME, owner()->tag(), 'A' + m_index, m_wr5);
+ LOGTX("%s \"%s \"Channel %c send break 1 m_wr5:%02x\n", FUNCNAME, owner()->tag(), 'A' + m_index, m_wr5);
// transmit break
- if (m_index == z80scc_device::CHANNEL_A)
- m_uart->m_out_txda_cb(0);
- else
- m_uart->m_out_txdb_cb(0);
+ out_txd_cb(0);
}
else if (!is_transmit_register_empty())
{
int db = transmit_register_get_data_bit();
- LOG(LLFORMAT " %s() \"%s \"Channel %c transmit data bit %d m_wr5:%02x\n", machine().firstcpu->total_cycles(), FUNCNAME, owner()->tag(), 'A' + m_index, db, m_wr5);
+ LOGTX("%s \"%s \"Channel %c transmit data bit %d m_wr5:%02x\n", FUNCNAME, owner()->tag(), 'A' + m_index, db, m_wr5);
// transmit data
- if (m_index == z80scc_device::CHANNEL_A)
- m_uart->m_out_txda_cb(db);
- else
- m_uart->m_out_txdb_cb(db);
+ out_txd_cb(db);
}
else
{
- LOG(LLFORMAT " %s() \"%s \"Channel %c Failed to transmit m_wr5:%02x\n", machine().firstcpu->total_cycles(), FUNCNAME, owner()->tag(), 'A' + m_index, m_wr5);
+ LOGTX("%s \"%s \"Channel %c Failed to transmit m_wr5:%02x\n", FUNCNAME, owner()->tag(), 'A' + m_index, m_wr5);
logerror("%s \"%s \"Channel %c Failed to transmit\n", FUNCNAME, owner()->tag(), 'A' + m_index);
}
}
-
//-------------------------------------------------
// tra_complete -
//-------------------------------------------------
-
void z80scc_channel::tra_complete()
{
// Delayed baudrate change according to SCC specs
@@ -1118,7 +1333,7 @@ void z80scc_channel::tra_complete()
{
m_delayed_tx_brg_change = 0;
set_tra_rate(m_brg_rate);
- LOG("Delayed Init - Baud Rate Generator: %d mode: %dx\n", m_brg_rate, get_clock_mode() );
+ LOGTX("Delayed Init - Baud Rate Generator: %d mode: %dx\n", m_brg_rate, get_clock_mode() );
}
if ((m_wr5 & WR5_TX_ENABLE) && !(m_wr5 & WR5_SEND_BREAK))
@@ -1126,7 +1341,7 @@ void z80scc_channel::tra_complete()
if ( (m_rr0 & RR0_TX_BUFFER_EMPTY) == 0 || // Takes care of the NMOS/CMOS 1 slot TX FIFO
m_tx_fifo_rp != m_tx_fifo_wp) // or there are more characters to send in a longer FIFO.
{
- LOGTX(" %s() %s %c done sending, loading data from fifo:%02x '%c'\n", FUNCNAME, owner()->tag(), 'A' + m_index,
+ LOGTX("%s %s %c done sending, loading data from fifo:%02x '%c'\n", FUNCNAME, owner()->tag(), 'A' + m_index,
m_tx_data_fifo[m_tx_fifo_rp], isascii(m_tx_data_fifo[m_tx_fifo_rp]) ? m_tx_data_fifo[m_tx_fifo_rp] : ' ');
transmit_register_setup(m_tx_data_fifo[m_tx_fifo_rp]); // Reload the shift register
m_tx_fifo_rp_step();
@@ -1134,7 +1349,7 @@ void z80scc_channel::tra_complete()
}
else
{
- LOGTX(" %s() %s %c done sending, setting all sent bit\n", FUNCNAME, owner()->tag(), 'A' + m_index);
+ LOGTX("%s %s %c done sending, setting all sent bit\n", FUNCNAME, owner()->tag(), 'A' + m_index);
m_rr1 |= RR1_ALL_SENT;
// when the RTS bit is reset, the _RTS output goes high after the transmitter empties
@@ -1163,21 +1378,15 @@ void z80scc_channel::tra_complete()
}
else if (m_wr5 & WR5_SEND_BREAK)
{
- LOG(LLFORMAT " %s() \"%s \"Channel %c Transmit Break 0 m_wr5:%02x\n", machine().firstcpu->total_cycles(), FUNCNAME, owner()->tag(), 'A' + m_index, m_wr5);
+ LOG("%s \"%s \"Channel %c Transmit Break 0 m_wr5:%02x\n", FUNCNAME, owner()->tag(), 'A' + m_index, m_wr5);
// transmit break
- if (m_index == z80scc_device::CHANNEL_A)
- m_uart->m_out_txda_cb(0);
- else
- m_uart->m_out_txdb_cb(0);
+ out_txd_cb(0);
}
else
{
- LOG(LLFORMAT " %s() \"%s \"Channel %c Transmit Mark 1 m_wr5:%02x\n", machine().firstcpu->total_cycles(), FUNCNAME, owner()->tag(), 'A' + m_index, m_wr5);
+ LOG("%s \"%s \"Channel %c Transmit Mark 1 m_wr5:%02x\n", FUNCNAME, owner()->tag(), 'A' + m_index, m_wr5);
// transmit mark
- if (m_index == z80scc_device::CHANNEL_A)
- m_uart->m_out_txda_cb(1);
- else
- m_uart->m_out_txdb_cb(1);
+ out_txd_cb(1);
}
}
@@ -1185,18 +1394,17 @@ void z80scc_channel::tra_complete()
//-------------------------------------------------
// rcv_callback -
//-------------------------------------------------
-
void z80scc_channel::rcv_callback()
{
if (m_wr3 & WR3_RX_ENABLE)
{
- LOG(LLFORMAT " %s() \"%s \"Channel %c receive data bit %d m_wr3:%02x\n", machine().firstcpu->total_cycles(), FUNCNAME, owner()->tag(), 'A' + m_index, m_rxd, m_wr3);
+ LOG("%s \"%s \"Channel %c receive data bit %d m_wr3:%02x\n", FUNCNAME, owner()->tag(), 'A' + m_index, m_rxd, m_wr3);
receive_register_update_bit(m_rxd);
}
#if 1
else
{
- LOG(LLFORMAT " %s() \"%s \"Channel %c Received Data Bit but receiver is disabled\n", machine().firstcpu->total_cycles(), FUNCNAME, owner()->tag(), 'A' + m_index);
+ LOG("%s \"%s \"Channel %c Received Data Bit but receiver is disabled\n", FUNCNAME, owner()->tag(), 'A' + m_index);
logerror("%s \"%s \"Channel %c Received data dit but receiver is disabled\n", FUNCNAME, owner()->tag(), 'A' + m_index);
}
#endif
@@ -1206,14 +1414,13 @@ void z80scc_channel::rcv_callback()
//-------------------------------------------------
// rcv_complete -
//-------------------------------------------------
-
void z80scc_channel::rcv_complete()
{
uint8_t data;
receive_register_extract();
data = get_received_char();
- LOG(LLFORMAT " %s() \"%s \"Channel %c Received Data %c\n", machine().firstcpu->total_cycles(), FUNCNAME, owner()->tag(), 'A' + m_index, data);
+ LOG("%s \"%s \"Channel %c Received Data %c\n", FUNCNAME, owner()->tag(), 'A' + m_index, data);
receive_data(data);
#if START_BIT_HUNT
m_rcv_mode = RCV_SEEKING;
@@ -1224,7 +1431,6 @@ void z80scc_channel::rcv_complete()
//-------------------------------------------------
// get_clock_mode - get clock divisor
//-------------------------------------------------
-
int z80scc_channel::get_clock_mode()
{
int clocks = 1;
@@ -1254,10 +1460,7 @@ TODO:
void z80scc_channel::set_rts(int state)
{
LOG("%s(%d) \"%s\": %c \n", FUNCNAME, state, owner()->tag(), 'A' + m_index);
- if (m_index == z80scc_device::CHANNEL_A)
- m_uart->m_out_rtsa_cb(state);
- else
- m_uart->m_out_rtsb_cb(state);
+ out_rts_cb(state);
}
void z80scc_channel::update_rts()
@@ -1282,7 +1485,6 @@ void z80scc_channel::update_rts()
//-------------------------------------------------
// get_stop_bits - get number of stop bits
//-------------------------------------------------
-
device_serial_interface::stop_bits_t z80scc_channel::get_stop_bits()
{
switch (m_wr4 & WR4_STOP_BITS_MASK)
@@ -1299,7 +1501,6 @@ device_serial_interface::stop_bits_t z80scc_channel::get_stop_bits()
//-------------------------------------------------
// get_rx_word_length - get receive word length
//-------------------------------------------------
-
int z80scc_channel::get_rx_word_length()
{
int bits = 5;
@@ -1319,7 +1520,6 @@ int z80scc_channel::get_rx_word_length()
//-------------------------------------------------
// get_tx_word_length - get transmit word length
//-------------------------------------------------
-
int z80scc_channel::get_tx_word_length()
{
int bits = 5;
@@ -1482,7 +1682,7 @@ uint8_t z80scc_channel::do_sccreg_rr7()
LOGR("%s\n", FUNCNAME);
if (!(m_uart->m_variant & (z80scc_device::SET_NMOS)))
{
- logerror(" %s() not implemented feature\n", FUNCNAME);
+ logerror("%s not implemented feature\n", FUNCNAME);
return 0;
}
return m_rr3;
@@ -1513,7 +1713,7 @@ uint8_t z80scc_channel::do_sccreg_rr9()
uint8_t z80scc_channel::do_sccreg_rr10()
{
LOGR("%s\n", FUNCNAME);
- logerror("%s() not implemented feature\n", FUNCNAME);
+ logerror("%s not implemented feature\n", FUNCNAME);
return m_rr10;
}
@@ -1606,7 +1806,7 @@ uint8_t z80scc_channel::scc_register_read( uint8_t reg)
{
case REG_RR0_STATUS: data = do_sccreg_rr0(); break; // TODO: verify handling of SCC specific bits: D6 and D1
case REG_RR1_SPEC_RCV_COND: data = do_sccreg_rr1(); break;
- case REG_RR2_INTERRUPT_VECT: data = do_sccreg_rr2(); break; // Channel dependent and SCC specific handling compared to SIO
+ case REG_RR2_INTERRUPT_VECT: data = do_sccreg_rr2(); break;
/* registers 3-7 are specific to SCC. TODO: Check variant and log/stop misuse */
case REG_RR3_INTERUPPT_PEND: data = wreg ? m_wr3 : do_sccreg_rr3(); break;
case REG_RR4_WR4_OR_RR0: data = wreg ? m_wr4 : do_sccreg_rr4(); break;
@@ -1623,7 +1823,7 @@ uint8_t z80scc_channel::scc_register_read( uint8_t reg)
case REG_RR14_WR7_OR_R10: data = do_sccreg_rr14(); break;
case REG_RR15_WR15_EXT_STAT: data = do_sccreg_rr15(); break;
default:
- logerror(" \"%s\" %s: %c : Unsupported RRx register:%02x\n", owner()->tag(), FUNCNAME, 'A' + m_index, reg);
+ logerror(" \"%s\"%s: %c : Unsupported RRx register:%02x\n", owner()->tag(), FUNCNAME, 'A' + m_index, reg);
}
return data;
}
@@ -1791,7 +1991,7 @@ void z80scc_channel::do_sccreg_wr0(uint8_t data)
void z80scc_channel::do_sccreg_wr1(uint8_t data)
{
LOG("%s(%02x) \"%s\": %c : %s - %02x\n", FUNCNAME, data, owner()->tag(), 'A' + m_index, FUNCNAME, data);
- /* TODO: Sort out SCC specific behaviours from legacy SIO behaviours:
+ /* TODO: Sort out SCC specific behaviours from legacy SIO behaviours inherited from z80dart.cpp:
- Channel B only bits vs
- Parity Is Special Condition, bit2 */
m_wr1 = data;
@@ -1927,7 +2127,7 @@ void z80scc_channel::do_sccreg_wr7(uint8_t data)
/* WR8 is the transmit buffer register */
void z80scc_channel::do_sccreg_wr8(uint8_t data)
{
- LOG("%s(%02x) \"%s\": %c : Transmit Buffer write %02x\n", FUNCNAME, data, owner()->tag(), 'A' + m_index, data);
+ LOGTX("%s(%02x) \"%s\": %c : Transmit Buffer write %02x\n", FUNCNAME, data, owner()->tag(), 'A' + m_index, data);
data_write(data);
}
@@ -2257,7 +2457,6 @@ with 0 before accessing WR0 or RR0.*/
//-------------------------------------------------
// control_write - write control register
//-------------------------------------------------
-
void z80scc_channel::control_write(uint8_t data)
{
uint8_t reg = m_uart->m_wr0_ptrbits; //m_wr0;
@@ -2286,7 +2485,6 @@ void z80scc_channel::control_write(uint8_t data)
//-------------------------------------------------
// data_read - read data register from fifo
//-------------------------------------------------
-
uint8_t z80scc_channel::data_read()
{
uint8_t data = 0;
@@ -2383,7 +2581,7 @@ WRITE8_MEMBER (z80scc_device::db_w) { m_chanB->data_write(data); }
void z80scc_channel::data_write(uint8_t data)
{
/* Tx FIFO is full or...? */
- LOGTX("%s \"%s\": %c : Data Register Write: %02d '%c'\n", FUNCNAME, owner()->tag(), 'A' + m_index, data, isprint(data) ? data : ' ');
+ LOG("%s \"%s\": %c : Data Register Write: %02d '%c'\n", FUNCNAME, owner()->tag(), 'A' + m_index, data, isprint(data) ? data : ' ');
if ( !(m_rr0 & RR0_TX_BUFFER_EMPTY) && // NMOS/CMOS 1 slot "FIFO" is controlled by the TBE bit instead of fifo logic
( (m_tx_fifo_wp + 1 == m_tx_fifo_rp) || ( (m_tx_fifo_wp + 1 == m_tx_fifo_sz) && (m_tx_fifo_rp == 0) )))
@@ -2469,7 +2667,6 @@ void z80scc_channel::data_write(uint8_t data)
//-------------------------------------------------
// receive_data - put received data word into fifo
//-------------------------------------------------
-
void z80scc_channel::receive_data(uint8_t data)
{
LOGRCV("\"%s\": %c : Received Data Byte '%c'/%02x put into FIFO\n", owner()->tag(), 'A' + m_index, isprint(data) ? data : ' ', data);
@@ -2522,10 +2719,9 @@ void z80scc_channel::receive_data(uint8_t data)
//-------------------------------------------------
// cts_w - clear to send handler
//-------------------------------------------------
-
WRITE_LINE_MEMBER( z80scc_channel::cts_w )
{
- LOG("\"%s\" %s: %c : CTS %u\n", owner()->tag(), FUNCNAME, 'A' + m_index, state);
+ LOG("\"%s\"%s: %c : CTS %u\n", owner()->tag(), FUNCNAME, 'A' + m_index, state);
if ((m_rr0 & RR0_CTS) != (state ? RR0_CTS : 0)) // SCC change detection logic
{
@@ -2603,31 +2799,6 @@ WRITE_LINE_MEMBER( z80scc_channel::dcd_w )
WRITE_LINE_MEMBER( z80scc_channel::ri_w )
{
LOGINT("\"%s\": %c : RI %u - not implemented\n", owner()->tag(), 'A' + m_index, state);
-
-#if 0 // TODO: This code is inherited from another device driver and not correct for SCC
- if (m_ri != state)
- {
- // set ring indicator state
- m_ri = state;
-
- if (!m_rx_rr0_latch)
- {
- if (m_ri)
- m_rr0 |= RR0_RI;
- else
- m_rr0 &= ~RR0_RI;
-
- if (m_wr1 & WR1_EXT_INT_ENABLE)
- {
- // trigger interrupt
- m_uart->trigger_interrupt(m_index, INT_EXTERNAL);
-
- // latch read register 0
- m_rx_rr0_latch = 1;
- }
- }
- }
-#endif
}
//-------------------------------------------------
@@ -2782,7 +2953,7 @@ void z80scc_channel::update_serial()
parity = PARITY_NONE;
}
- LOG(" %s() \"%s \"Channel %c setting data frame %d+%d%c%d\n", FUNCNAME, owner()->tag(), 'A' + m_index, 1,
+ LOG("%s \"%s \"Channel %c setting data frame %d+%d%c%d\n", FUNCNAME, owner()->tag(), 'A' + m_index, 1,
data_bit_count, parity == PARITY_NONE ? 'N' : parity == PARITY_EVEN ? 'E' : 'O', (stop_bits + 1) / 2);
set_data_frame(1, data_bit_count, parity, stop_bits);
@@ -2841,10 +3012,7 @@ void z80scc_channel::set_dtr(int state)
LOG("%s(%d)\n", FUNCNAME, state);
m_dtr = state;
- if (m_index == z80scc_device::CHANNEL_A)
- m_uart->m_out_dtra_cb(m_dtr);
- else
- m_uart->m_out_dtrb_cb(m_dtr);
+ out_dtr_cb(m_dtr);
}
//-------------------------------------------------
@@ -2893,8 +3061,6 @@ void z80scc_channel::check_waitrequest()
if (m_wr1 & WR1_WREQ_FUNCTION)
{
// assert /W//REQ if transmit buffer is empty, clear if it's not
- int state = (m_rr0 & RR0_TX_BUFFER_EMPTY) ? ASSERT_LINE : CLEAR_LINE;
-
- (m_index ? m_uart->m_out_wreqb_cb : m_uart->m_out_wreqa_cb)(state);
+ m_uart->m_out_wreq_cb[m_index]((m_rr0 & RR0_TX_BUFFER_EMPTY) ? ASSERT_LINE : CLEAR_LINE);
}
}