From 436525a8c79c94053c0c8a43b4be4553917c628a Mon Sep 17 00:00:00 2001 From: arbee Date: Tue, 4 Jan 2022 21:26:58 -0500 Subject: apple2: Added support for the ProDOS ROM Drive card. [R. Belmont] --- scripts/src/bus.lua | 2 + src/devices/bus/a2bus/cards.cpp | 3 + src/devices/bus/a2bus/prodosromdrive.cpp | 119 +++++++++++++++++++++++++++++++ src/devices/bus/a2bus/prodosromdrive.h | 21 ++++++ 4 files changed, 145 insertions(+) create mode 100644 src/devices/bus/a2bus/prodosromdrive.cpp create mode 100644 src/devices/bus/a2bus/prodosromdrive.h diff --git a/scripts/src/bus.lua b/scripts/src/bus.lua index b1e52de2c49..be1805ba9b8 100644 --- a/scripts/src/bus.lua +++ b/scripts/src/bus.lua @@ -2587,6 +2587,8 @@ if (BUSES["A2BUS"]~=null) then MAME_DIR .. "src/devices/bus/a2bus/nippelclock.h", MAME_DIR .. "src/devices/bus/a2bus/pc_xporter.cpp", MAME_DIR .. "src/devices/bus/a2bus/pc_xporter.h", + MAME_DIR .. "src/devices/bus/a2bus/prodosromdrive.cpp", + MAME_DIR .. "src/devices/bus/a2bus/prodosromdrive.h", MAME_DIR .. "src/devices/bus/a2bus/q68.cpp", MAME_DIR .. "src/devices/bus/a2bus/q68.h", MAME_DIR .. "src/devices/bus/a2bus/ramcard128k.cpp", diff --git a/src/devices/bus/a2bus/cards.cpp b/src/devices/bus/a2bus/cards.cpp index 92f33192fc7..b376c9a2fd1 100644 --- a/src/devices/bus/a2bus/cards.cpp +++ b/src/devices/bus/a2bus/cards.cpp @@ -47,6 +47,7 @@ #include "bus/a2bus/grappler.h" #include "bus/a2bus/laser128.h" #include "bus/a2bus/mouse.h" +#include "bus/a2bus/prodosromdrive.h" #include "bus/a2bus/ramcard128k.h" #include "bus/a2bus/ramcard16k.h" #include "bus/a2bus/ssbapple.h" @@ -215,6 +216,7 @@ void apple2e_cards(device_slot_interface &device) device.option_add("q68plus", A2BUS_Q68PLUS); // Stellation Q68 Plus 68000 card device.option_add("a2sd", A2BUS_A2SD); // Florian Reitz AppleIISD device.option_add("grafex", A2BUS_GRAFEX); // Grafex card (uPD7220 graphics) + device.option_add("pdromdrive", A2BUS_PRODOSROMDRIVE); // ProDOS ROM Drive } void apple2gs_cards(device_slot_interface &device) @@ -285,6 +287,7 @@ void apple2gs_cards(device_slot_interface &device) device.option_add("q68", A2BUS_Q68); // Stellation Q68 68000 card device.option_add("q68plus", A2BUS_Q68PLUS); // Stellation Q68 Plus 68000 card device.option_add("grafex", A2BUS_GRAFEX); // Grafex card (uPD7220 graphics) + device.option_add("pdromdrive", A2BUS_PRODOSROMDRIVE); // ProDOS ROM Drive } void apple3_cards(device_slot_interface &device) diff --git a/src/devices/bus/a2bus/prodosromdrive.cpp b/src/devices/bus/a2bus/prodosromdrive.cpp new file mode 100644 index 00000000000..e574c6c8c13 --- /dev/null +++ b/src/devices/bus/a2bus/prodosromdrive.cpp @@ -0,0 +1,119 @@ +// license:BSD-3-Clause +// copyright-holders:R. Belmont +/********************************************************************* + + prodosromdrive.cpp + + Implementation of the ProDOS ROM Drive card + + This is a hobbyist board which provides a minimal SmartPort API + interface to boot from a 1 MiB disk image stored in a 27C080 or + compatible EPROM. + + Board and firmware by Terence J. Boldt + http://apple2.ca/ + https://github.com/tjboldt/ProDOS-ROM-Drive + + The firmware requires a IIe or better, and some of the games + included require a 65C02 (enhanced IIe). + +*********************************************************************/ + +#include "emu.h" +#include "prodosromdrive.h" + +namespace { + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +class a2bus_pdromdrive_device : public device_t, + public device_a2bus_card_interface +{ +public: + // construction/destruction + a2bus_pdromdrive_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + +protected: + a2bus_pdromdrive_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); + + virtual void device_start() override; + virtual const tiny_rom_entry *device_rom_region() const override; + + // overrides of standard a2bus slot functions + virtual uint8_t read_c0nx(uint8_t offset) override; + virtual void write_c0nx(uint8_t offset, uint8_t data) override; + virtual uint8_t read_cnxx(uint8_t offset) override; + +private: + required_region_ptr m_rom; + + u16 m_latch; +}; + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +a2bus_pdromdrive_device::a2bus_pdromdrive_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : + a2bus_pdromdrive_device(mconfig, A2BUS_PRODOSROMDRIVE, tag, owner, clock) +{ +} + +a2bus_pdromdrive_device::a2bus_pdromdrive_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_a2bus_card_interface(mconfig, *this), + m_rom(*this, "romdrive") +{ +} + +void a2bus_pdromdrive_device::device_start() +{ + save_item(NAME(m_latch)); +} + +ROM_START( pdromdrive ) + ROM_REGION(0x100000, "romdrive", 0) + ROM_LOAD( "gameswithfirmware.bin", 0x000000, 0x100000, CRC(a1efd23b) SHA1(f0733b7a68126adc5247a1008de2ea4f65ad645a) ) +ROM_END + +const tiny_rom_entry *a2bus_pdromdrive_device::device_rom_region() const +{ + return ROM_NAME(pdromdrive); +} + +uint8_t a2bus_pdromdrive_device::read_c0nx(uint8_t offset) +{ + return m_rom[(m_latch << 4) | (offset & 0xf)]; +} + +void a2bus_pdromdrive_device::write_c0nx(uint8_t offset, uint8_t data) +{ + switch (offset) + { + case 0: + m_latch &= 0xff00; + m_latch |= data; + break; + + case 1: + m_latch &= 0x00ff; + m_latch |= (data << 8); + break; + } +} + +uint8_t a2bus_pdromdrive_device::read_cnxx(uint8_t offset) +{ + return m_rom[offset + 0x300]; +} + +} // anonymous namespace + + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +DEFINE_DEVICE_TYPE_PRIVATE(A2BUS_PRODOSROMDRIVE, device_a2bus_card_interface, a2bus_pdromdrive_device, "a2pdromdr", "ProDOS ROM Drive") diff --git a/src/devices/bus/a2bus/prodosromdrive.h b/src/devices/bus/a2bus/prodosromdrive.h new file mode 100644 index 00000000000..d283053a39d --- /dev/null +++ b/src/devices/bus/a2bus/prodosromdrive.h @@ -0,0 +1,21 @@ +// license:BSD-3-Clause +// copyright-holders:R. Belmont +/********************************************************************* + + prodosromdrive.h + + Implementation of the ProDOS ROM Drive card + +*********************************************************************/ + +#ifndef MAME_BUS_A2BUS_PRODOSROMDRIVE_H +#define MAME_BUS_A2BUS_PRODOSROMDRIVE_H + +#pragma once + +#include "a2bus.h" + +// device type definition +DECLARE_DEVICE_TYPE(A2BUS_PRODOSROMDRIVE, device_a2bus_card_interface) + +#endif // MAME_BUS_A2BUS_PRODOSROMDRIVE_H -- cgit v1.2.3