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Diffstat (limited to 'src/mame/drivers/wy30p.cpp')
-rw-r--r-- | src/mame/drivers/wy30p.cpp | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/mame/drivers/wy30p.cpp b/src/mame/drivers/wy30p.cpp new file mode 100644 index 00000000000..dfdf3f45873 --- /dev/null +++ b/src/mame/drivers/wy30p.cpp @@ -0,0 +1,128 @@ +// license:BSD-3-Clause +// copyright-holders:AJR +/******************************************************************************* + + Skeleton driver for Wyse WY-30+ terminal. + + This low-end video terminal is the successor to the WY-30, whose control + board features an entirely different hardware configuration. + +*******************************************************************************/ + +#include "emu.h" +#include "cpu/mcs51/mcs51.h" +#include "machine/eepromser.h" +#include "screen.h" + +class wy30p_state : public driver_device +{ +public: + wy30p_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag) + , m_eeprom(*this, "eeprom") + , m_screen(*this, "screen") + { + } + + void wy30p(machine_config &config); + +protected: + virtual void machine_start() override; + virtual void driver_start() override; + +private: + u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); + + u8 p3_r(); + u8 de00_r(); + + void prog_map(address_map &map); + void ext_map(address_map &map); + + required_device<eeprom_serial_er5911_device> m_eeprom; + required_device<screen_device> m_screen; +}; + + +void wy30p_state::machine_start() +{ +} + +u32 wy30p_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) +{ + return 0; +} + +u8 wy30p_state::p3_r() +{ + return 0xdf | (m_eeprom->do_read() << 5); +} + +u8 wy30p_state::de00_r() +{ + return m_screen->vblank() << 7; // probably not correct +} + +void wy30p_state::prog_map(address_map &map) +{ + map(0x0000, 0x3fff).mirror(0xc000).rom().region("program", 0); +} + +void wy30p_state::ext_map(address_map &map) +{ + map(0x0000, 0x1fff).ram(); + map(0xa000, 0xa7ff).ram(); + map(0xde00, 0xde00).mirror(0xff).r(FUNC(wy30p_state::de00_r)); +} + + +static INPUT_PORTS_START(wy30p) +INPUT_PORTS_END + + +void wy30p_state::wy30p(machine_config &config) +{ + i8031_device &maincpu(I8031(config, "maincpu", 7.3728_MHz_XTAL)); + maincpu.set_addrmap(AS_PROGRAM, &wy30p_state::prog_map); + maincpu.set_addrmap(AS_IO, &wy30p_state::ext_map); + maincpu.port_in_cb<3>().set(FUNC(wy30p_state::p3_r)); + maincpu.port_out_cb<3>().set(m_eeprom, FUNC(eeprom_serial_er5911_device::cs_write)).bit(3); + maincpu.port_out_cb<3>().append(m_eeprom, FUNC(eeprom_serial_er5911_device::clk_write)).bit(4); + maincpu.port_out_cb<3>().append(m_eeprom, FUNC(eeprom_serial_er5911_device::di_write)).bit(5); + + EEPROM_ER5911_8BIT(config, m_eeprom); + + SCREEN(config, m_screen, SCREEN_TYPE_RASTER); + m_screen->set_raw(31.2795_MHz_XTAL * 2 / 3, 1050, 0, 800, 331, 0, 300); // divider and dimensions guessed + m_screen->set_screen_update(FUNC(wy30p_state::screen_update)); +} + + +// PCB: "© 1989 990710-01 REV.B1" +// CPU: Intel P8031AH +// Program EPROM: 250971-02 (M27128MFI) "© WYSE TECH 92' REV.A" +// Nonvolatile memory: CSI CAT59C11P +// RAM: TC5565APL-12, HY6116AP-15 +// QFP gate array: 211019-02 (Oki M76V020) "© WYSE,1989" +// Jumper near gate array: "FONT SIZE" = "8Kx8" or "2Kx8" (J3) +// XTALs: 31.2795 (dot clock?), 7.3728 (for CPU) +// DB-25 connectors: "MDM" & "AUX" +ROM_START(wy30p) + ROM_REGION(0x4000, "program", 0) + ROM_LOAD("250971-02.u4", 0x0000, 0x4000, CRC(3666549c) SHA1(23c432da2083df4b355daf566dd6514d1f9a7690)) +ROM_END + +void wy30p_state::driver_start() +{ + uint8_t *rom = memregion("program")->base(); + for (offs_t base = 0x0000; base < 0x4000; base += 0x2000) + { + std::vector<uint8_t> orig(&rom[base], &rom[base + 0x2000]); + + // Line swaps can be confusing... + for (offs_t offset = 0; offset < 0x2000; offset++) + rom[base | offset] = bitswap<8>(orig[bitswap<13>(offset, 8, 5, 0, 4, 3, 9, 7, 10, 11, 12, 2, 6, 1)], 3, 4, 5, 6, 7, 2, 1, 0); + } +} + +COMP(1992, wy30p, 0, 0, wy30p, wy30p, wy30p_state, empty_init, "Wyse Technology", "WY-30+ (v1.8)", MACHINE_IS_SKELETON) |