// license:BSD-3-Clause // copyright-holders:R. Belmont /*************************************************************************** Brigent BootBug card Debugger support card for creators of NuBus slot firmware and other early-boot/low-level software. Basically a serial card with an overachieving declaration ROM. ***************************************************************************/ #include "emu.h" #include "bootbug.h" #include "bus/rs232/rs232.h" #include "bus/rs232/terminal.h" #include "bus/rs232/null_modem.h" #include "screen.h" static void isa_com(device_slot_interface &device) { device.option_add("terminal", SERIAL_TERMINAL); device.option_add("null_modem", NULL_MODEM); } #define BOOTBUG_ROM_REGION "btbug_rom" ROM_START( bootbug ) ROM_REGION(0x10000, BOOTBUG_ROM_REGION, 0) ROM_DEFAULT_BIOS("bb15") ROM_SYSTEM_BIOS(0, "bb15", "BootBug v1.5") ROMX_LOAD( "bootbug1.5.bin", 0x000000, 0x010000, CRC(432badf0) SHA1(914ad4bb28946cac732cf8b178508b69e4c1aae2), ROM_BIOS(0)) ROM_SYSTEM_BIOS(1, "bb13", "BootBug v1.3") ROMX_LOAD( "bootbug1.3.bin", 0x000000, 0x010000, CRC(2902a234) SHA1(c783d19a5e4c536e58e1e7e201ec47e8fb78d435), ROM_BIOS(1)) ROM_END //************************************************************************** // GLOBAL VARIABLES //************************************************************************** DEFINE_DEVICE_TYPE(NUBUS_BOOTBUG, nubus_bootbug_device, "nb_btbug", "Brigent BootBug debugger card") //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void nubus_bootbug_device::device_add_mconfig(machine_config &config) { NS16450(config, m_uart, XTAL(1'843'200)); m_uart->out_tx_callback().set("serport0", FUNC(rs232_port_device::write_txd)); m_uart->out_dtr_callback().set("serport0", FUNC(rs232_port_device::write_dtr)); m_uart->out_rts_callback().set("serport0", FUNC(rs232_port_device::write_rts)); rs232_port_device &serport0(RS232_PORT(config, "serport0", isa_com, "terminal")); serport0.rxd_handler().set(m_uart, FUNC(ins8250_uart_device::rx_w)); serport0.dcd_handler().set(m_uart, FUNC(ins8250_uart_device::dcd_w)); serport0.dsr_handler().set(m_uart, FUNC(ins8250_uart_device::dsr_w)); serport0.ri_handler().set(m_uart, FUNC(ins8250_uart_device::ri_w)); serport0.cts_handler().set(m_uart, FUNC(ins8250_uart_device::cts_w)); } //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- const tiny_rom_entry *nubus_bootbug_device::device_rom_region() const { return ROM_NAME( bootbug ); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // nubus_bootbug_device - constructor //------------------------------------------------- nubus_bootbug_device::nubus_bootbug_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock) : nubus_bootbug_device(mconfig, NUBUS_BOOTBUG, tag, owner, clock) { } nubus_bootbug_device::nubus_bootbug_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, const XTAL &clock) : device_t(mconfig, type, tag, owner, clock), device_nubus_card_interface(mconfig, *this), m_uart(*this, "uart_0") { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void nubus_bootbug_device::device_start() { uint32_t slotspace; install_declaration_rom(BOOTBUG_ROM_REGION); slotspace = get_slotspace(); nubus().install_device(slotspace, slotspace+0xff, read32sm_delegate(*this, FUNC(nubus_bootbug_device::dev_r)), write32sm_delegate(*this, FUNC(nubus_bootbug_device::dev_w))); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void nubus_bootbug_device::device_reset() { } void nubus_bootbug_device::dev_w(offs_t offset, uint32_t data) { m_uart->ins8250_w(offset, data & 0xff); } uint32_t nubus_bootbug_device::dev_r(offs_t offset) { return m_uart->ins8250_r(offset); }