diff options
Diffstat (limited to 'src/mame/drivers/telex277d.cpp')
-rw-r--r-- | src/mame/drivers/telex277d.cpp | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/mame/drivers/telex277d.cpp b/src/mame/drivers/telex277d.cpp new file mode 100644 index 00000000000..4c4b01864fa --- /dev/null +++ b/src/mame/drivers/telex277d.cpp @@ -0,0 +1,72 @@ +// license:BSD-3-Clause +// copyright-holders:AJR +/************************************************************************************************************ + + Skeleton driver for Telex 277/D IBM 3277-compatible coaxial terminal. + +************************************************************************************************************/ + +#include "emu.h" +#include "cpu/i8085/i8085.h" +#include "machine/i8155.h" + +class telex277d_state : public driver_device +{ +public: + telex277d_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag) + , m_maincpu(*this, "maincpu") + , m_chargen(*this, "chargen") + { + } + + void telex277d(machine_config &config); + +private: + void mem_map(address_map &map); + void io_map(address_map &map); + + required_device<cpu_device> m_maincpu; + required_region_ptr<u8> m_chargen; +}; + + +void telex277d_state::mem_map(address_map &map) +{ + map(0x0000, 0x1fff).rom().region("program", 0); + map(0x4000, 0x47ff).ram(); + map(0x8000, 0x80ff).rw("ramio", FUNC(i8155_device::memory_r), FUNC(i8155_device::memory_w)); +} + +void telex277d_state::io_map(address_map &map) +{ + map(0x80, 0x87).rw("ramio", FUNC(i8155_device::io_r), FUNC(i8155_device::io_w)); +} + + +static INPUT_PORTS_START(telex277d) +INPUT_PORTS_END + + +void telex277d_state::telex277d(machine_config &config) +{ + I8085A(config, m_maincpu, 6.144_MHz_XTAL); + m_maincpu->set_addrmap(AS_PROGRAM, &telex277d_state::mem_map); + m_maincpu->set_addrmap(AS_IO, &telex277d_state::io_map); + + I8155(config, "ramio", 6.144_MHz_XTAL / 2); +} + + +ROM_START(telex277d) // D8085A, P8155. bank of 8 dips between these 2 chips. Xtals on cpu board = 6.144,14.286MHz; Xtal on video board = 16.414 + ROM_REGION(0x2000, "program", 0) + ROM_LOAD("15834.bin", 0x0000, 0x0800, CRC(364602ed) SHA1(574b1052ab000cfb9e7f194454de65f5255c250e)) + ROM_LOAD("15835.bin", 0x0800, 0x0800, CRC(b587d005) SHA1(de38b1dcbb871dc5f7dcbc177dfcbc25ecc743c4)) + ROM_LOAD("15836.bin", 0x1000, 0x0800, CRC(33a7179f) SHA1(c4b2a8f9d2b3e2f97c7d9b5458cad314fc8c79c1)) + ROM_LOAD("15837.bin", 0x1800, 0x0800, CRC(6d726662) SHA1(cff3ea2f06b802b94acfb780014d0e389cb61c42)) + + ROM_REGION(0x0400, "chargen", 0) + ROM_LOAD("15181_font.bin", 0x0000, 0x0400, CRC(2a7abd0b) SHA1(4456723c59307671dd0615723e6439f6532df531)) +ROM_END + +COMP(1979, telex277d, 0, 0, telex277d, telex277d, telex277d_state, empty_init, "Telex Computer Products", "Telex 277-D Display Terminal (Model 2)", MACHINE_IS_SKELETON) |