diff options
Diffstat (limited to 'src/devices/bus/hp_dio/hp98644.cpp')
-rw-r--r-- | src/devices/bus/hp_dio/hp98644.cpp | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/src/devices/bus/hp_dio/hp98644.cpp b/src/devices/bus/hp_dio/hp98644.cpp new file mode 100644 index 00000000000..7a99180afc4 --- /dev/null +++ b/src/devices/bus/hp_dio/hp98644.cpp @@ -0,0 +1,219 @@ +// license:BSD-3-Clause +// copyright-holders:Sven Schnelle +/*************************************************************************** + + HP98644 Asynchronous serial interface + +***************************************************************************/ + +#include "emu.h" +#include "hp98644.h" +#include "bus/rs232/rs232.h" + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +DEFINE_DEVICE_TYPE(HPDIO_98644, dio16_98644_device, "dio98644", "HP98644A Asynchronous Serial Interface") + + +//------------------------------------------------- +// device_add_mconfig - add device configuration +//------------------------------------------------- + +MACHINE_CONFIG_START( dio16_98644_device::device_add_mconfig ) + MCFG_DEVICE_ADD(INS8250_TAG, INS8250, XTAL(2'457'600)) + + MCFG_INS8250_OUT_TX_CB(DEVWRITELINE(RS232_TAG, rs232_port_device, write_txd)) + MCFG_INS8250_OUT_DTR_CB(DEVWRITELINE(RS232_TAG, rs232_port_device, write_dtr)) + MCFG_INS8250_OUT_RTS_CB(DEVWRITELINE(RS232_TAG, rs232_port_device, write_rts)) + + MCFG_RS232_PORT_ADD(RS232_TAG, default_rs232_devices, nullptr) + MCFG_RS232_RXD_HANDLER(DEVWRITELINE(INS8250_TAG, ins8250_uart_device, rx_w)) + MCFG_RS232_DCD_HANDLER(DEVWRITELINE(INS8250_TAG, ins8250_uart_device, dcd_w)) + MCFG_RS232_DSR_HANDLER(DEVWRITELINE(INS8250_TAG, ins8250_uart_device, dsr_w)) + MCFG_RS232_RI_HANDLER(DEVWRITELINE(INS8250_TAG, ins8250_uart_device, ri_w)) + MCFG_RS232_CTS_HANDLER(DEVWRITELINE(INS8250_TAG, ins8250_uart_device, cts_w)) +MACHINE_CONFIG_END + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// dio16_98644_device - constructor +//------------------------------------------------- + +dio16_98644_device::dio16_98644_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : + dio16_98644_device(mconfig, HPDIO_98644, tag, owner, clock) +{ +} + +dio16_98644_device::dio16_98644_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) : + device_t(mconfig, type, tag, owner, clock), + device_dio16_card_interface(mconfig, *this), + m_uart(*this, INS8250_TAG), + m_switches{*this, "switches"} +{ +} + + +#define REG_SWITCHES_REMOTE 0x01 +#define REG_SWITCHES_98626_EN 0x02 +#define REG_SWITCHES_MODEM_EN 0x04 + +#define REG_SWITCHES_SELECT_CODE_MASK 31 +#define REG_SWITCHES_SELECT_CODE_SHIFT 5 + +#define REG_SWITCHES_INT_LEVEL_MASK 3 +#define REG_SWITCHES_INT_LEVEL_SHIFT 3 + +static INPUT_PORTS_START(hp98644_port) + PORT_START("switches") + PORT_DIPNAME(REG_SWITCHES_REMOTE, 0x00, "Remote") + PORT_DIPSETTING(0x00, DEF_STR(Off)) + PORT_DIPSETTING(REG_SWITCHES_REMOTE, DEF_STR(On)) + + PORT_DIPNAME(REG_SWITCHES_98626_EN, 0x00, "98626 Emulation") + PORT_DIPSETTING(0x00, DEF_STR(Off)) + PORT_DIPSETTING(REG_SWITCHES_98626_EN, DEF_STR(On)) + + PORT_DIPNAME(REG_SWITCHES_MODEM_EN, 0x00, "Modem line enable") + PORT_DIPSETTING(0x00, DEF_STR(Off)) + PORT_DIPSETTING(REG_SWITCHES_MODEM_EN, DEF_STR(On)) + + PORT_DIPNAME(REG_SWITCHES_INT_LEVEL_MASK << REG_SWITCHES_INT_LEVEL_SHIFT, 0x00, "Interrupt level") + PORT_DIPSETTING(0 << REG_SWITCHES_INT_LEVEL_SHIFT, "3") + PORT_DIPSETTING(1 << REG_SWITCHES_INT_LEVEL_SHIFT, "4") + PORT_DIPSETTING(2 << REG_SWITCHES_INT_LEVEL_SHIFT, "5") + PORT_DIPSETTING(3 << REG_SWITCHES_INT_LEVEL_SHIFT, "6") + + PORT_DIPNAME(REG_SWITCHES_SELECT_CODE_MASK << REG_SWITCHES_SELECT_CODE_SHIFT, 0x09 << REG_SWITCHES_SELECT_CODE_SHIFT, "Select code") + PORT_DIPSETTING(0 << REG_SWITCHES_SELECT_CODE_SHIFT, "0") + PORT_DIPSETTING(1 << REG_SWITCHES_SELECT_CODE_SHIFT, "1") + PORT_DIPSETTING(2 << REG_SWITCHES_SELECT_CODE_SHIFT, "2") + PORT_DIPSETTING(3 << REG_SWITCHES_SELECT_CODE_SHIFT, "3") + PORT_DIPSETTING(4 << REG_SWITCHES_SELECT_CODE_SHIFT, "4") + PORT_DIPSETTING(5 << REG_SWITCHES_SELECT_CODE_SHIFT, "5") + PORT_DIPSETTING(6 << REG_SWITCHES_SELECT_CODE_SHIFT, "6") + PORT_DIPSETTING(7 << REG_SWITCHES_SELECT_CODE_SHIFT, "7") + PORT_DIPSETTING(8 << REG_SWITCHES_SELECT_CODE_SHIFT, "8") + PORT_DIPSETTING(9 << REG_SWITCHES_SELECT_CODE_SHIFT, "9") + PORT_DIPSETTING(10 << REG_SWITCHES_SELECT_CODE_SHIFT, "10") + PORT_DIPSETTING(11 << REG_SWITCHES_SELECT_CODE_SHIFT, "11") + PORT_DIPSETTING(12 << REG_SWITCHES_SELECT_CODE_SHIFT, "12") + PORT_DIPSETTING(13 << REG_SWITCHES_SELECT_CODE_SHIFT, "13") + PORT_DIPSETTING(14 << REG_SWITCHES_SELECT_CODE_SHIFT, "14") + PORT_DIPSETTING(15 << REG_SWITCHES_SELECT_CODE_SHIFT, "15") + PORT_DIPSETTING(16 << REG_SWITCHES_SELECT_CODE_SHIFT, "16") + PORT_DIPSETTING(17 << REG_SWITCHES_SELECT_CODE_SHIFT, "17") + PORT_DIPSETTING(18 << REG_SWITCHES_SELECT_CODE_SHIFT, "18") + PORT_DIPSETTING(19 << REG_SWITCHES_SELECT_CODE_SHIFT, "19") + PORT_DIPSETTING(20 << REG_SWITCHES_SELECT_CODE_SHIFT, "20") + PORT_DIPSETTING(21 << REG_SWITCHES_SELECT_CODE_SHIFT, "21") + PORT_DIPSETTING(22 << REG_SWITCHES_SELECT_CODE_SHIFT, "22") + PORT_DIPSETTING(23 << REG_SWITCHES_SELECT_CODE_SHIFT, "23") + PORT_DIPSETTING(24 << REG_SWITCHES_SELECT_CODE_SHIFT, "24") + PORT_DIPSETTING(25 << REG_SWITCHES_SELECT_CODE_SHIFT, "25") + PORT_DIPSETTING(26 << REG_SWITCHES_SELECT_CODE_SHIFT, "26") + PORT_DIPSETTING(27 << REG_SWITCHES_SELECT_CODE_SHIFT, "27") + PORT_DIPSETTING(28 << REG_SWITCHES_SELECT_CODE_SHIFT, "28") + PORT_DIPSETTING(29 << REG_SWITCHES_SELECT_CODE_SHIFT, "29") + PORT_DIPSETTING(30 << REG_SWITCHES_SELECT_CODE_SHIFT, "30") + PORT_DIPSETTING(31 << REG_SWITCHES_SELECT_CODE_SHIFT, "31") +INPUT_PORTS_END + +ioport_constructor dio16_98644_device::device_input_ports() const +{ + return INPUT_PORTS_NAME(hp98644_port); +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void dio16_98644_device::device_start() +{ + // set_nubus_device makes m_slot valid + set_dio_device(); +} + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void dio16_98644_device::device_reset() +{ + uint code = m_switches->read() >> REG_SWITCHES_SELECT_CODE_SHIFT; + code &= REG_SWITCHES_SELECT_CODE_MASK; + + m_dio->install_memory(0x600000 + (code * 0x10000), 0x6007ff + (code * 0x10000), read16_delegate(FUNC(dio16_98644_device::io_r), this), + write16_delegate(FUNC(dio16_98644_device::io_w), this)); +} + +READ16_MEMBER(dio16_98644_device::io_r) +{ + uint16_t ret = 0xffff; + + switch(offset) { + case 0: /* ID */ + ret = 0x02; + if (m_switches->read() & REG_SWITCHES_REMOTE) + ret |= 0x80; + if (m_switches->read() & REG_SWITCHES_98626_EN) + ret |= 0x40; + break; + + case 1: + ret = m_control | m_control << 8; + break; + + case 0x08: + case 0x09: + case 0x0a: + case 0x0b: + case 0x0c: + case 0x0d: + case 0x0e: + case 0x0f: + ret = m_uart->ins8250_r(space, offset & 0x07, mem_mask); + break; + } + + + if (m_loopback && offset == 8) { + ret = m_data; + } + return ret; +} + +WRITE16_MEMBER(dio16_98644_device::io_w) +{ + if (offset == 0x0c) + m_loopback = (data & 0x10) ? true : false; + + if (m_loopback && offset == 8) { + m_data = data; + return; + } + + switch(offset) { + case 0: + device_reset(); + break; + case 1: + m_control = data & 0x80; + break; + + case 0x08: + case 0x09: + case 0x0a: + case 0x0b: + case 0x0c: + case 0x0d: + case 0x0e: + case 0x0f: + m_uart->ins8250_w(space, offset & 0x07, data, mem_mask); + break; + } +} |