// 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(1)) ROM_SYSTEM_BIOS(1, "bb13", "BootBug v1.3") ROMX_LOAD( "bootbug1.3.bin", 0x000000, 0x010000, CRC(2902a234) SHA1(c783d19a5e4c536e58e1e7e201ec47e8fb78d435), ROM_BIOS(2)) ROM_END //************************************************************************** // GLOBAL VARIABLES //************************************************************************** DEFINE_DEVICE_TYPE(NUBUS_BOOTBUG, nubus_bootbug_device, "nb_btbug", "Brigent BootBug debugger card") //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- MACHINE_CONFIG_START(nubus_bootbug_device::device_add_mconfig) MCFG_DEVICE_ADD( "uart_0", NS16450, XTAL(1'843'200) ) MCFG_INS8250_OUT_TX_CB(WRITELINE("serport0", rs232_port_device, write_txd)) MCFG_INS8250_OUT_DTR_CB(WRITELINE("serport0", rs232_port_device, write_dtr)) MCFG_INS8250_OUT_RTS_CB(WRITELINE("serport0", rs232_port_device, write_rts)) MCFG_DEVICE_ADD( "serport0", RS232_PORT, isa_com, "terminal" ) MCFG_RS232_RXD_HANDLER(WRITELINE("uart_0", ins8250_uart_device, rx_w)) MCFG_RS232_DCD_HANDLER(WRITELINE("uart_0", ins8250_uart_device, dcd_w)) MCFG_RS232_DSR_HANDLER(WRITELINE("uart_0", ins8250_uart_device, dsr_w)) MCFG_RS232_RI_HANDLER(WRITELINE("uart_0", ins8250_uart_device, ri_w)) MCFG_RS232_CTS_HANDLER(WRITELINE("uart_0", ins8250_uart_device, cts_w)) MACHINE_CONFIG_END //------------------------------------------------- // 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, uint32_t 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, uint32_t 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(this, BOOTBUG_ROM_REGION); slotspace = get_slotspace(); nubus().install_device(slotspace, slotspace+0xff, read32_delegate(FUNC(nubus_bootbug_device::dev_r), this), write32_delegate(FUNC(nubus_bootbug_device::dev_w), this)); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void nubus_bootbug_device::device_reset() { } WRITE32_MEMBER( nubus_bootbug_device::dev_w ) { m_uart->ins8250_w(space, offset, data & 0xff); } READ32_MEMBER( nubus_bootbug_device::dev_r ) { return m_uart->ins8250_r(space, offset); }