diff options
Diffstat (limited to 'src/devices/bus/nubus/bootbug.cpp')
-rw-r--r-- | src/devices/bus/nubus/bootbug.cpp | 98 |
1 files changed, 37 insertions, 61 deletions
diff --git a/src/devices/bus/nubus/bootbug.cpp b/src/devices/bus/nubus/bootbug.cpp index 24763b64dc2..4d7b568b19c 100644 --- a/src/devices/bus/nubus/bootbug.cpp +++ b/src/devices/bus/nubus/bootbug.cpp @@ -5,18 +5,42 @@ Brigent BootBug card Debugger support card for creators of NuBus slot firmware and other - early-boot/low-level software. + early-boot/low-level software. Actually has many of the features + of MacsBug including A6 stack tracing. Absolutely not PowerMac compatible + though, unlike MacsBug. - Basically a serial card with an overachieving declaration ROM. + Basically an 8250 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" +#include "machine/ins8250.h" + +namespace { +class nubus_bootbug_device : public device_t, + public device_nubus_card_interface +{ +public: + nubus_bootbug_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); + +protected: + required_device<ns16450_device> m_uart; + + // device-level overrides + virtual void device_start() override ATTR_COLD; + + // optional information overrides + virtual void device_add_mconfig(machine_config &config) override ATTR_COLD; + virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD; + +private: + void card_map(address_map &map); +}; static void isa_com(device_slot_interface &device) { @@ -24,10 +48,8 @@ static void isa_com(device_slot_interface &device) device.option_add("null_modem", NULL_MODEM); } -#define BOOTBUG_ROM_REGION "btbug_rom" - ROM_START( bootbug ) - ROM_REGION(0x10000, BOOTBUG_ROM_REGION, 0) + ROM_REGION(0x10000, "declrom", 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)) @@ -35,17 +57,6 @@ ROM_START( bootbug ) 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)); @@ -61,64 +72,29 @@ void nubus_bootbug_device::device_add_mconfig(machine_config &config) 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, 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), +nubus_bootbug_device::nubus_bootbug_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : + device_t(mconfig, NUBUS_BOOTBUG, 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() +void nubus_bootbug_device::card_map(address_map &map) { - 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)); + map(0x00'0000, 0x00'00ff).rw(m_uart, FUNC(ns16450_device::ins8250_r), FUNC(ns16450_device::ins8250_w)).umask32(0x000000ff); } -//------------------------------------------------- -// device_reset - device-specific reset -//------------------------------------------------- - -void nubus_bootbug_device::device_reset() +void nubus_bootbug_device::device_start() { + install_declaration_rom("declrom"); + nubus().install_map(*this, &nubus_bootbug_device::card_map); } -WRITE32_MEMBER( nubus_bootbug_device::dev_w ) -{ - m_uart->ins8250_w(offset, data & 0xff); -} +} // anonymous namespace -READ32_MEMBER( nubus_bootbug_device::dev_r ) -{ - return m_uart->ins8250_r(offset); -} +DEFINE_DEVICE_TYPE_PRIVATE(NUBUS_BOOTBUG, device_nubus_card_interface, nubus_bootbug_device, "nb_btbug", "Brigent BootBug debugger card") |