From 471781f99ae8242319beb474649dd4afefa5e3f7 Mon Sep 17 00:00:00 2001 From: Nigel Barnes Date: Thu, 27 Aug 2020 19:46:01 +0100 Subject: bus/bbc/userport: Added the Sprow LCD Display. --- scripts/src/bus.lua | 2 + src/devices/bus/bbc/userport/lcd.cpp | 112 ++++++++++++++++++++++++++++++ src/devices/bus/bbc/userport/lcd.h | 56 +++++++++++++++ src/devices/bus/bbc/userport/userport.cpp | 2 + 4 files changed, 172 insertions(+) create mode 100644 src/devices/bus/bbc/userport/lcd.cpp create mode 100644 src/devices/bus/bbc/userport/lcd.h diff --git a/scripts/src/bus.lua b/scripts/src/bus.lua index 8dfc690cbf1..4dc6609e9ed 100644 --- a/scripts/src/bus.lua +++ b/scripts/src/bus.lua @@ -595,6 +595,8 @@ if (BUSES["BBC_USERPORT"]~=null) then MAME_DIR .. "src/devices/bus/bbc/userport/userport.h", MAME_DIR .. "src/devices/bus/bbc/userport/beebspch.cpp", MAME_DIR .. "src/devices/bus/bbc/userport/beebspch.h", + MAME_DIR .. "src/devices/bus/bbc/userport/lcd.cpp", + MAME_DIR .. "src/devices/bus/bbc/userport/lcd.h", MAME_DIR .. "src/devices/bus/bbc/userport/palext.cpp", MAME_DIR .. "src/devices/bus/bbc/userport/palext.h", MAME_DIR .. "src/devices/bus/bbc/userport/pointer.cpp", diff --git a/src/devices/bus/bbc/userport/lcd.cpp b/src/devices/bus/bbc/userport/lcd.cpp new file mode 100644 index 00000000000..cdc70bc35fe --- /dev/null +++ b/src/devices/bus/bbc/userport/lcd.cpp @@ -0,0 +1,112 @@ +// license:BSD-3-Clause +// copyright-holders:Nigel Barnes +/********************************************************************** + + Sprow LCD Display + + http://www.sprow.co.uk/bbc/buildit.htm#Lcddisplay + +**********************************************************************/ + + +#include "emu.h" +#include "lcd.h" +#include "screen.h" + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +DEFINE_DEVICE_TYPE(BBC_LCD, bbc_lcd_device, "bbc_lcd", "Sprow LCD Display") + + +//------------------------------------------------- +// device_add_mconfig - add device configuration +//------------------------------------------------- + +void bbc_lcd_device::device_add_mconfig(machine_config &config) +{ + auto &screen = SCREEN(config, "screen", SCREEN_TYPE_LCD); + screen.set_refresh_hz(50); + screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); + screen.set_size(120, 36); + screen.set_visarea_full(); + screen.set_screen_update(m_lcdc, FUNC(hd44780_device::screen_update)); + screen.set_palette("palette"); + + PALETTE(config, "palette", FUNC(bbc_lcd_device::lcd_palette), 3); + + HD44780(config, m_lcdc); + m_lcdc->set_lcd_size(4, 20); + m_lcdc->set_pixel_update_cb(FUNC(bbc_lcd_device::lcd_pixel_update)); +} + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// bbc_lcd_device - constructor +//------------------------------------------------- + +bbc_lcd_device::bbc_lcd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) + : device_t(mconfig, BBC_LCD, tag, owner, clock) + , device_bbc_userport_interface(mconfig, *this) + , m_lcdc(*this, "lcdc") +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void bbc_lcd_device::device_start() +{ +} + + +//************************************************************************** +// IMPLEMENTATION +//************************************************************************** + +HD44780_PIXEL_UPDATE(bbc_lcd_device::lcd_pixel_update) +{ + // char size is 5x8 + if (x > 4 || y > 7) + return; + + if (pos < 40) + { + if (pos >= 20) + { + line += 2; + pos -= 20; + } + + if (line < 4) + bitmap.pix16(line * (8 + 1) + y, pos * 6 + x) = state ? 1 : 2; + } +} + +void bbc_lcd_device::lcd_palette(palette_device &palette) const +{ + palette.set_pen_color(0, rgb_t(138, 146, 148)); // background + palette.set_pen_color(1, rgb_t( 92, 83, 88)); // lcd pixel on + palette.set_pen_color(2, rgb_t(131, 136, 139)); // lcd pixel off +} + +uint8_t bbc_lcd_device::pb_r() +{ + return m_lcdc->db_r() >> 1; +} + +void bbc_lcd_device::pb_w(uint8_t data) +{ + m_lcdc->rs_w(BIT(data, 0)); + m_lcdc->rw_w(BIT(data, 1)); + m_lcdc->e_w(BIT(data, 2)); + m_lcdc->db_w(data << 1); +} diff --git a/src/devices/bus/bbc/userport/lcd.h b/src/devices/bus/bbc/userport/lcd.h new file mode 100644 index 00000000000..c4aecfbd00e --- /dev/null +++ b/src/devices/bus/bbc/userport/lcd.h @@ -0,0 +1,56 @@ +// license:BSD-3-Clause +// copyright-holders:Nigel Barnes +/********************************************************************** + + Sprow LCD Display + +**********************************************************************/ + +#ifndef MAME_BUS_BBC_USERPORT_LCD_H +#define MAME_BUS_BBC_USERPORT_LCD_H + +#pragma once + +#include "userport.h" +#include "video/hd44780.h" +#include "emupal.h" + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> bbc_lcd_device + +class bbc_lcd_device : + public device_t, + public device_bbc_userport_interface +{ +public: + // construction/destruction + bbc_lcd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + +protected: + // device-level overrides + virtual void device_start() override; + + // optional information overrides + virtual void device_add_mconfig(machine_config &config) override; + + virtual uint8_t pb_r() override; + virtual void pb_w(uint8_t data) override; + +private: + required_device m_lcdc; + + HD44780_PIXEL_UPDATE(lcd_pixel_update); + + void lcd_palette(palette_device &palette) const; +}; + + +// device type definition +DECLARE_DEVICE_TYPE(BBC_LCD, bbc_lcd_device) + + +#endif // MAME_BUS_BBC_USERPORT_LCD_H diff --git a/src/devices/bus/bbc/userport/userport.cpp b/src/devices/bus/bbc/userport/userport.cpp index b16b6433f9f..d312cc10d50 100644 --- a/src/devices/bus/bbc/userport/userport.cpp +++ b/src/devices/bus/bbc/userport/userport.cpp @@ -109,6 +109,7 @@ void bbc_userport_slot_device::pb_w(uint8_t data) #include "beebspch.h" //#include "digitiser.h" //#include "ev1.h" +#include "lcd.h" #include "palext.h" #include "pointer.h" #include "usersplit.h" @@ -127,6 +128,7 @@ void bbc_userport_devices(device_slot_interface &device) device.option_add("cpalette", BBC_CPALETTE); /* Clwyd Technics Colour Palette */ //device.option_add("ev1", BBC_EV1); /* Micro-Robotics EV1 */ //device.option_add("hobbit", BBC_HOBBIT); /* Hobbit Floppy Tape System (Ikon) */ + device.option_add("lcd", BBC_LCD); /* Sprow LCD Display */ device.option_add("m512mouse", BBC_M512MOUSE); /* Acorn Mouse (provided with Master 512) */ device.option_add("tracker", BBC_TRACKER); /* Marconi RB2 Tracker Ball / Acorn Tracker Ball */ device.option_add("usersplit", BBC_USERSPLIT); /*User Port Splitter (Watford Electronics) */ -- cgit v1.2.3