mirror of
https://github.com/holub/mame
synced 2025-04-16 13:34:55 +03:00
spectrum: implemented Swift Disc and Swift Disc II interfaces
This commit is contained in:
MetalliC
parent
34c03bbb02
commit
896a982d1b
@ -3788,6 +3788,8 @@ if (BUSES["SPECTRUM"]~=null) then
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MAME_DIR .. "src/devices/bus/spectrum/protek.h",
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MAME_DIR .. "src/devices/bus/spectrum/sdi.cpp",
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MAME_DIR .. "src/devices/bus/spectrum/sdi.h",
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MAME_DIR .. "src/devices/bus/spectrum/sixword.cpp",
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MAME_DIR .. "src/devices/bus/spectrum/sixword.h",
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MAME_DIR .. "src/devices/bus/spectrum/speccydos.cpp",
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MAME_DIR .. "src/devices/bus/spectrum/speccydos.h",
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MAME_DIR .. "src/devices/bus/spectrum/specdrum.cpp",
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@ -1733,6 +1733,18 @@ if (FORMATS["SVI_DSK"]~=null or _OPTIONS["with-tools"]) then
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}
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end
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--------------------------------------------------
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--
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--@src/lib/formats/swd_dsk.h,FORMATS["SWD_DSK"] = true
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--------------------------------------------------
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if (FORMATS["SWD_DSK"]~=null or _OPTIONS["with-tools"]) then
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files {
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MAME_DIR.. "src/lib/formats/swd_dsk.cpp",
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MAME_DIR.. "src/lib/formats/swd_dsk.h",
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}
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end
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--------------------------------------------------
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--
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--@src/lib/formats/tandy2k_dsk.h,FORMATS["TANDY2K_DSK"] = true
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@ -1085,6 +1085,7 @@ FORMATS["SPC1000_CAS"] = true
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FORMATS["ST_DSK"] = true
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FORMATS["SVI_CAS"] = true
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FORMATS["SVI_DSK"] = true
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FORMATS["SWD_DSK"] = true
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FORMATS["TANDY2K_DSK"] = true
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FORMATS["THOM_CAS"] = true
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FORMATS["THOM_DSK"] = true
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@ -172,6 +172,7 @@ void spectrum_expansion_slot_device::mreq_w(offs_t offset, uint8_t data)
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#include "logitek.h"
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#include "protek.h"
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#include "sdi.h"
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#include "sixword.h"
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#include "specdrum.h"
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#include "speccydos.h"
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#include "uslot.h"
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@ -210,6 +211,8 @@ void spectrum_expansion_devices(device_slot_interface &device)
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device.option_add("sdi", SPECTRUM_SDI);
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device.option_add("speccydos", SPECTRUM_SPECCYDOS);
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device.option_add("specdrum", SPECTRUM_SPECDRUM);
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device.option_add("swiftdisc", SPECTRUM_SWIFTDISC);
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device.option_add("swiftdisc2", SPECTRUM_SWIFTDISC2);
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device.option_add("uslot", SPECTRUM_USLOT);
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device.option_add("usource", SPECTRUM_USOURCE);
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device.option_add("uspeech", SPECTRUM_USPEECH);
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@ -232,6 +235,8 @@ void spec128_expansion_devices(device_slot_interface &device)
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device.option_add("protek", SPECTRUM_PROTEK);
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device.option_add("speccydos", SPECTRUM_SPECCYDOS);
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device.option_add("specdrum", SPECTRUM_SPECDRUM);
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device.option_add("swiftdisc", SPECTRUM_SWIFTDISC);
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device.option_add("swiftdisc2", SPECTRUM_SWIFTDISC2);
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device.option_add("wafadrive", SPECTRUM_WAFA);
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}
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504
src/devices/bus/spectrum/sixword.cpp
Normal file
504
src/devices/bus/spectrum/sixword.cpp
Normal file
@ -0,0 +1,504 @@
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// license:BSD-3-Clause
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// copyright-holders:MetalliC
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/*********************************************************************
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Swift Disc
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(c) 1987 SIXWORD ltd (UK)
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WD1770-based floppy drive interface with 8KB RAM and 16KB ROM, serial printer interface, joystick port and "interrupt" button,
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supports up to 4x 3'5 (normally) or 5"25 drives, 640KB per disk, compatible with ZX Spectrum 128, was positioned as luxury device.
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For additional charge was available ZX Interface 1 microdrive emulator software (currently missing).
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How to use:
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Press "Interrupt" button and you'll get into console where you may type commands, like:
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C[AT] [drive] - list disk contents, drive 0-3
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F[ORMAT] diskname - format disk
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S[AVE] filename - save snapshot to disk
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L[OAD] filename - load snapshot from disk
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A[LTER] address data - change value in RAM
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Q[UIT] - return to BASIC/game
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* - reset
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Starting form Swift Disc O/S V2 most of commands may be called from BASIC using syntax like "COMMAND %drive;"filename"", for example:
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CAT %0
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LOAD %0;"game"
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and so on, plus additional commands for sequential file access.
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Manual: https://k1.spdns.de/Vintage/Sinclair/82/Peripherals/Disc%20Interfaces/SixWord%20Swift%20Disc%20Interface/Swift%20Disc%20Operating%20Manual.pdf
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Swift Disc II
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(c) 1989 SIXWORD ltd (UK)
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Same as above but extended to 32KB ROM, most of discrete ICs replaced with PALs, smaller form factor.
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It seems RAM was planned to be extended to 16KB, but 2nd RAM IC is not populated on known devices.
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Was available in several favours - with or without printer port, various number of supported drives, etc.
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Dumped v4.2 firmware supports 2 disk drives, but hardware still supports up to 4x.
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Notes / TODOs:
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- serial printer interface not hooked
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*********************************************************************/
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#include "emu.h"
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#include "sixword.h"
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/***************************************************************************
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DEVICE DEFINITIONS
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***************************************************************************/
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DEFINE_DEVICE_TYPE(SPECTRUM_SWIFTDISC, spectrum_swiftdisc_device, "spectrum_swiftdisc", "Swift Disc Interface")
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DEFINE_DEVICE_TYPE(SPECTRUM_SWIFTDISC2, spectrum_swiftdisc2_device, "spectrum_swiftdisc2", "Swift Disc II Interface")
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//-------------------------------------------------
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// INPUT_PORTS
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//-------------------------------------------------
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INPUT_PORTS_START(swiftdisc)
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PORT_START("BUTTON")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_BUTTON1) PORT_NAME("Interrupt Button") PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHANGED_MEMBER(DEVICE_SELF, spectrum_swiftdisc_device, nmi_button, 0)
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PORT_START("JOY")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT) PORT_8WAY
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT) PORT_8WAY
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN) PORT_8WAY
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP) PORT_8WAY
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_BUTTON1)
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PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED)
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INPUT_PORTS_END
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//-------------------------------------------------
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// input_ports - device-specific input ports
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//-------------------------------------------------
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ioport_constructor spectrum_swiftdisc_device::device_input_ports() const
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{
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return INPUT_PORTS_NAME(swiftdisc);
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}
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//-------------------------------------------------
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// SLOT_INTERFACE( floppies )
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//-------------------------------------------------
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static void swiftdisc_floppies(device_slot_interface &device)
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{
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device.option_add("35dd", FLOPPY_35_DD);
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device.option_add("525qd", FLOPPY_525_QD);
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}
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//-------------------------------------------------
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// floppy_format_type floppy_formats
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//-------------------------------------------------
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FLOPPY_FORMATS_MEMBER(spectrum_swiftdisc_device::floppy_formats)
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FLOPPY_SWD_FORMAT
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FLOPPY_FORMATS_END
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//-------------------------------------------------
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// ROM( swiftdisc )
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//-------------------------------------------------
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ROM_START(swiftdisc)
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ROM_REGION(0x4000, "rom", 0)
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ROM_DEFAULT_BIOS("v34")
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// v2.3 known to exists, not dumped
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ROM_SYSTEM_BIOS(0, "v24", "v2.4")
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ROMX_LOAD("24.ic8", 0x0000, 0x4000, CRC(547f660a) SHA1(73a1b96271760fb0edfc1302368372501455bbfc), ROM_BIOS(0))
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ROM_SYSTEM_BIOS(1, "v34", "v3.4")
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ROMX_LOAD("34.ic8", 0x0000, 0x4000, CRC(f7092c0c) SHA1(5afe0364afedc83c03995d44914fe7f207fb5c28), ROM_BIOS(1))
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ROM_END
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ROM_START(swiftdisc2)
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ROM_REGION(0x8000, "rom", 0)
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ROM_DEFAULT_BIOS("v42")
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ROM_SYSTEM_BIOS(0, "v42", "v4.2")
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ROMX_LOAD("42.bin", 0x0000, 0x8000, CRC(a6fde15b) SHA1(496be6f655974b6162ff430b6ba0c7002164b736), ROM_BIOS(0))
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ROM_REGION(260, "pals", 0)
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ROM_LOAD("dec1_pal16l8.bin", 0, 260, BAD_DUMP CRC(1433067c) SHA1(a0cf09a86a0d7a71332005bbb04d27d3aa45291c)) // one of logic equations clearly wrong
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ROM_LOAD("dec2_pal16l8.bin", 0, 260, CRC(4d088879) SHA1(d1d60b38068d457db25f5df304a705999f285fd9))
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ROM_LOAD("dec3_pal16l8.bin", 0, 260, CRC(8306722c) SHA1(2ad28d44bc33a50ed5f93f2520f25100dd36841d))
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ROM_END
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//-------------------------------------------------
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// device_add_mconfig - add device configuration
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//-------------------------------------------------
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void spectrum_swiftdisc_device::device_add_mconfig(machine_config &config)
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{
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WD1770(config, m_fdc, 8_MHz_XTAL);
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m_fdc->intrq_wr_callback().set(DEVICE_SELF_OWNER, FUNC(spectrum_expansion_slot_device::nmi_w));
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m_fdc->drq_wr_callback().set(DEVICE_SELF_OWNER, FUNC(spectrum_expansion_slot_device::nmi_w));
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FLOPPY_CONNECTOR(config, "fdc:0", swiftdisc_floppies, "35dd", spectrum_swiftdisc_device::floppy_formats).enable_sound(true);
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FLOPPY_CONNECTOR(config, "fdc:1", swiftdisc_floppies, "35dd", spectrum_swiftdisc_device::floppy_formats).enable_sound(true);
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FLOPPY_CONNECTOR(config, "fdc:2", swiftdisc_floppies, nullptr, spectrum_swiftdisc_device::floppy_formats).enable_sound(true);
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FLOPPY_CONNECTOR(config, "fdc:3", swiftdisc_floppies, nullptr, spectrum_swiftdisc_device::floppy_formats).enable_sound(true);
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// passthru
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SPECTRUM_EXPANSION_SLOT(config, m_exp, spectrum_expansion_devices, nullptr);
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m_exp->irq_handler().set(DEVICE_SELF_OWNER, FUNC(spectrum_expansion_slot_device::irq_w));
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m_exp->nmi_handler().set(DEVICE_SELF_OWNER, FUNC(spectrum_expansion_slot_device::nmi_w));
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}
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const tiny_rom_entry *spectrum_swiftdisc_device::device_rom_region() const
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{
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return ROM_NAME(swiftdisc);
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}
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const tiny_rom_entry *spectrum_swiftdisc2_device::device_rom_region() const
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{
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return ROM_NAME(swiftdisc2);
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// spectrum_swiftdisc_device - constructor
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//-------------------------------------------------
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spectrum_swiftdisc_device::spectrum_swiftdisc_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, type, tag, owner, clock)
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, device_spectrum_expansion_interface(mconfig, *this)
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, m_rom(*this, "rom")
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, m_fdc(*this, "fdc")
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, m_floppy(*this, "fdc:%u", 0)
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, m_exp(*this, "exp")
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, m_joy(*this, "JOY")
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{
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}
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spectrum_swiftdisc_device::spectrum_swiftdisc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: spectrum_swiftdisc_device(mconfig, SPECTRUM_SWIFTDISC, tag, owner, clock)
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{
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}
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spectrum_swiftdisc2_device::spectrum_swiftdisc2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: spectrum_swiftdisc_device(mconfig, SPECTRUM_SWIFTDISC2, tag, owner, clock)
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void spectrum_swiftdisc_device::device_start()
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{
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memset(m_ram, 0, sizeof(m_ram));
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save_item(NAME(m_romcs));
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save_item(NAME(m_ram));
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save_item(NAME(m_rombank));
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save_item(NAME(m_control));
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}
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void spectrum_swiftdisc2_device::device_start()
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{
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spectrum_swiftdisc_device::device_start();
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save_item(NAME(m_rambank));
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void spectrum_swiftdisc_device::device_reset()
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{
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m_romcs = 0;
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m_rombank = 0;
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m_control = 0;
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}
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void spectrum_swiftdisc2_device::device_reset()
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{
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spectrum_swiftdisc_device::device_reset();
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m_rambank = 0;
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}
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//**************************************************************************
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// IMPLEMENTATION (swiftdisc)
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//**************************************************************************
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READ_LINE_MEMBER(spectrum_swiftdisc_device::romcs)
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{
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return m_romcs | m_exp->romcs();
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}
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void spectrum_swiftdisc_device::post_opcode_fetch(offs_t offset)
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{
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m_exp->post_opcode_fetch(offset);
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if (!machine().side_effects_disabled())
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{
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switch (offset)
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{
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case 0x000b:
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m_romcs = !m_romcs;
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break;
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case 0x0066:
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if (m_rombank & 0x1000)
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m_romcs = !m_romcs;
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break;
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}
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}
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}
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uint8_t spectrum_swiftdisc_device::mreq_r(offs_t offset)
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{
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u8 data = 0xff;
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if (m_romcs)
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{
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switch (offset & 0xf000)
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{
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case 0x0000:
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data = m_rom->base()[m_rombank + offset];
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break;
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case 0x1000:
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case 0x2000:
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data = m_ram[offset - 0x1000];
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break;
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case 0x3000:
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if (!BIT(offset, 3))
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data = m_fdc->read(offset & 3);
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else
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data = 0; // D0 - DTR input, D1 - RX input
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break;
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}
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}
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if (m_exp->romcs())
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data &= m_exp->mreq_r(offset);
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return data;
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}
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void spectrum_swiftdisc_device::mreq_w(offs_t offset, uint8_t data)
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{
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if (m_romcs)
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{
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switch (offset & 0xf000)
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{
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case 0x0000:
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if (BIT(offset, 3))
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m_rombank ^= 0x1000;
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else
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{
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floppy_image_device* floppy = nullptr;
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for (int i = 3; i >= 0; i--)
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{
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floppy_image_device* fl = m_floppy[i]->get_device();
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if (fl)
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{
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fl->ss_w(BIT(data, 4));
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if (BIT(data, i))
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floppy = fl;
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}
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}
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m_fdc->set_floppy(floppy);
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m_rombank &= ~0x2000;
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m_rombank |= BIT(data, 5) << 13;
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m_control = data;
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// D3 - /TX output
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}
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break;
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case 0x1000:
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case 0x2000:
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m_ram[offset - 0x1000] = data;
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break;
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case 0x3000:
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if (!BIT(offset, 3))
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m_fdc->write(offset & 3, data);
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break;
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}
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}
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m_exp->mreq_w(offset, data);
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}
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uint8_t spectrum_swiftdisc_device::iorq_r(offs_t offset)
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{
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uint8_t data = m_exp->iorq_r(offset);
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if (!BIT(offset, 5))
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data = m_joy->read();
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return data;
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}
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//**************************************************************************
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// IMPLEMENTATION (swiftdisc2)
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//**************************************************************************
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void spectrum_swiftdisc2_device::post_opcode_fetch(offs_t offset)
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{
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m_exp->post_opcode_fetch(offset);
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if (!machine().side_effects_disabled())
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{
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switch (offset)
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{
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case 0x000b:
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m_romcs = !m_romcs;
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break;
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case 0x0066:
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if (m_rombank & 0x1000)
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m_romcs = !m_romcs;
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break;
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case 0x1709:
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if (BIT(m_control,2))
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m_romcs = !m_romcs;
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break;
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}
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}
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}
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uint8_t spectrum_swiftdisc2_device::mreq_r(offs_t offset)
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{
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u8 data = 0xff;
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if (m_romcs)
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{
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switch (offset & 0xf000)
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{
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case 0x0000:
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data = m_rom->base()[m_rombank + offset];
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break;
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||||
case 0x1000:
|
||||
case 0x2000:
|
||||
if (!m_rambank)
|
||||
data = m_ram[offset - 0x1000];
|
||||
else
|
||||
{
|
||||
data = 0xff; // 2nd RAM IC not populated
|
||||
logerror("Swift2 RAM2 read %04x\n", offset);
|
||||
}
|
||||
break;
|
||||
case 0x3000:
|
||||
if (!BIT(offset, 4))
|
||||
data = m_fdc->read(offset & 3);
|
||||
else
|
||||
data &= ~1; // D0 - nc, but seems was planned to do something, leftover from prev version ?
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (m_exp->romcs())
|
||||
data &= m_exp->mreq_r(offset);
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
void spectrum_swiftdisc2_device::mreq_w(offs_t offset, uint8_t data)
|
||||
{
|
||||
if (m_romcs)
|
||||
{
|
||||
switch (offset & 0xf000)
|
||||
{
|
||||
case 0x0000:
|
||||
if (BIT(offset, 8))
|
||||
m_rambank = !m_rambank;
|
||||
break;
|
||||
case 0x1000:
|
||||
case 0x2000:
|
||||
if (!m_rambank)
|
||||
m_ram[offset - 0x1000] = data;
|
||||
else
|
||||
{
|
||||
// 2nd RAM IC not populated
|
||||
logerror("Swift2 RAM2 write %04x %02x\n", offset, data);
|
||||
}
|
||||
break;
|
||||
case 0x3000:
|
||||
if ((offset & 0x890) == 0)
|
||||
m_fdc->write(offset & 3, data);
|
||||
|
||||
if (BIT(offset, 4))
|
||||
control_w(data);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
m_exp->mreq_w(offset, data);
|
||||
}
|
||||
|
||||
uint8_t spectrum_swiftdisc2_device::iorq_r(offs_t offset)
|
||||
{
|
||||
uint8_t data = m_exp->iorq_r(offset);
|
||||
|
||||
if (m_romcs && (offset & 0xf890) == 0x3000)
|
||||
data &= ~1; // IO port mirror
|
||||
|
||||
if (!BIT(offset, 5) && !BIT(m_control, 3))
|
||||
data = m_joy->read();
|
||||
|
||||
if (BIT(m_control, 2))
|
||||
{
|
||||
if (!BIT(offset, 3))
|
||||
{
|
||||
data |= 0x80; // D7 - /serial input
|
||||
}
|
||||
if (!BIT(offset, 4))
|
||||
{
|
||||
data &= ~0x0f;
|
||||
data |= 3;
|
||||
data |= 8; // D3 - /serial input
|
||||
}
|
||||
}
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
void spectrum_swiftdisc2_device::iorq_w(offs_t offset, uint8_t data)
|
||||
{
|
||||
if (m_romcs && (offset & 0xf890) == 0x3000)
|
||||
control_w(data);
|
||||
|
||||
if (BIT(m_control, 2))
|
||||
{
|
||||
if (!BIT(offset, 3))
|
||||
{
|
||||
// D0 - /serial output
|
||||
}
|
||||
if (!BIT(offset, 4))
|
||||
{
|
||||
// D0 - 0=reset above latch
|
||||
// D4 - /serial output
|
||||
}
|
||||
}
|
||||
|
||||
m_exp->iorq_w(offset, data);
|
||||
}
|
||||
|
||||
void spectrum_swiftdisc2_device::control_w(uint8_t data)
|
||||
{
|
||||
floppy_image_device* floppy = nullptr;
|
||||
for (int i = 3; i >= 0; i--)
|
||||
{
|
||||
floppy_image_device* fl = m_floppy[i]->get_device();
|
||||
if (fl)
|
||||
{
|
||||
fl->ss_w(BIT(data, 4));
|
||||
if (!BIT(data, i))
|
||||
floppy = fl;
|
||||
}
|
||||
}
|
||||
m_fdc->set_floppy(floppy);
|
||||
|
||||
m_rombank &= ~0x6000;
|
||||
m_rombank |= BIT(data, 5) << 13;
|
||||
m_rombank |= BIT(data, 6) << 14;
|
||||
|
||||
if (BIT(data, 7) && !BIT(m_control, 7)) // swap bank at 0->1
|
||||
m_rombank ^= 0x1000;
|
||||
m_control = data;
|
||||
}
|
||||
96
src/devices/bus/spectrum/sixword.h
Normal file
96
src/devices/bus/spectrum/sixword.h
Normal file
@ -0,0 +1,96 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:MetalliC
|
||||
/*********************************************************************
|
||||
|
||||
SIXWORD Swift Disc Interface
|
||||
|
||||
*********************************************************************/
|
||||
#ifndef MAME_BUS_SPECTRUM_SIXWORD_H
|
||||
#define MAME_BUS_SPECTRUM_SIXWORD_H
|
||||
|
||||
#include "exp.h"
|
||||
#include "softlist.h"
|
||||
#include "imagedev/floppy.h"
|
||||
#include "machine/wd_fdc.h"
|
||||
#include "formats/swd_dsk.h"
|
||||
|
||||
//**************************************************************************
|
||||
// TYPE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
class spectrum_swiftdisc_device :
|
||||
public device_t,
|
||||
public device_spectrum_expansion_interface
|
||||
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
spectrum_swiftdisc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
DECLARE_FLOPPY_FORMATS(floppy_formats);
|
||||
DECLARE_INPUT_CHANGED_MEMBER(nmi_button) { m_rombank |= newval << 12; m_slot->nmi_w(newval ? ASSERT_LINE : CLEAR_LINE); };
|
||||
|
||||
protected:
|
||||
spectrum_swiftdisc_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
// device-level overrides
|
||||
virtual void device_start() override;
|
||||
virtual void device_reset() override;
|
||||
|
||||
// optional information overrides
|
||||
virtual ioport_constructor device_input_ports() const override;
|
||||
|
||||
virtual void device_add_mconfig(machine_config &config) override;
|
||||
virtual const tiny_rom_entry *device_rom_region() const override;
|
||||
|
||||
virtual void post_opcode_fetch(offs_t offset) override;
|
||||
virtual uint8_t mreq_r(offs_t offset) override;
|
||||
virtual void mreq_w(offs_t offset, uint8_t data) override;
|
||||
virtual uint8_t iorq_r(offs_t offset) override;
|
||||
virtual DECLARE_READ_LINE_MEMBER(romcs) override;
|
||||
|
||||
required_memory_region m_rom;
|
||||
required_device<wd_fdc_device_base> m_fdc;
|
||||
required_device_array<floppy_connector, 4> m_floppy;
|
||||
required_device<spectrum_expansion_slot_device> m_exp;
|
||||
required_ioport m_joy;
|
||||
|
||||
int m_romcs;
|
||||
u8 m_ram[0x2000];
|
||||
u16 m_rombank;
|
||||
u8 m_control;
|
||||
};
|
||||
|
||||
class spectrum_swiftdisc2_device :
|
||||
public spectrum_swiftdisc_device
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
spectrum_swiftdisc2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
protected:
|
||||
// device-level overrides
|
||||
virtual void device_start() override;
|
||||
virtual void device_reset() override;
|
||||
|
||||
virtual const tiny_rom_entry *device_rom_region() const override;
|
||||
|
||||
virtual void post_opcode_fetch(offs_t offset) override;
|
||||
virtual uint8_t mreq_r(offs_t offset) override;
|
||||
virtual void mreq_w(offs_t offset, uint8_t data) override;
|
||||
virtual uint8_t iorq_r(offs_t offset) override;
|
||||
virtual void iorq_w(offs_t offset, uint8_t data) override;
|
||||
|
||||
void control_w(uint8_t data);
|
||||
|
||||
int m_rambank;
|
||||
};
|
||||
|
||||
|
||||
|
||||
// device type definition
|
||||
DECLARE_DEVICE_TYPE(SPECTRUM_SWIFTDISC, spectrum_swiftdisc_device)
|
||||
DECLARE_DEVICE_TYPE(SPECTRUM_SWIFTDISC2, spectrum_swiftdisc2_device)
|
||||
|
||||
|
||||
#endif // MAME_BUS_SPECTRUM_SIXWORD_H
|
||||
52
src/lib/formats/swd_dsk.cpp
Normal file
52
src/lib/formats/swd_dsk.cpp
Normal file
@ -0,0 +1,52 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:MetalliC
|
||||
/*********************************************************************
|
||||
|
||||
formats/swd_dsk.c
|
||||
|
||||
Swift Disc disk images
|
||||
|
||||
*********************************************************************/
|
||||
|
||||
#include <cassert>
|
||||
|
||||
#include "formats/swd_dsk.h"
|
||||
|
||||
swd_format::swd_format() : wd177x_format(formats)
|
||||
{
|
||||
}
|
||||
|
||||
const char *swd_format::name() const
|
||||
{
|
||||
return "swd";
|
||||
}
|
||||
|
||||
const char *swd_format::description() const
|
||||
{
|
||||
return "SWD floppy disk image";
|
||||
}
|
||||
|
||||
const char *swd_format::extensions() const
|
||||
{
|
||||
return "swd";
|
||||
}
|
||||
|
||||
int swd_format::get_image_offset(const format &f, int head, int track)
|
||||
{
|
||||
return (f.track_count * head + track) * compute_track_size(f);
|
||||
}
|
||||
|
||||
const swd_format::format swd_format::formats[] = {
|
||||
// note: original formatted disks use side# 1/2 instead of usual 0/1
|
||||
{ // 3'5 640K 80 track double sided double density
|
||||
floppy_image::FF_35, floppy_image::DSDD, floppy_image::MFM,
|
||||
2000, 16, 80, 2, 256, {}, 1, {}, 60, 22, 56
|
||||
},
|
||||
{ // 5"25 640K 80 track double sided double density
|
||||
floppy_image::FF_525, floppy_image::DSQD, floppy_image::MFM,
|
||||
2000, 16, 80, 2, 256, {}, 1, {}, 60, 22, 56
|
||||
},
|
||||
{}
|
||||
};
|
||||
|
||||
const floppy_format_type FLOPPY_SWD_FORMAT = &floppy_image_format_creator<swd_format>;
|
||||
32
src/lib/formats/swd_dsk.h
Normal file
32
src/lib/formats/swd_dsk.h
Normal file
@ -0,0 +1,32 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:MetalliC
|
||||
/*********************************************************************
|
||||
|
||||
formats/swd_dsk.h
|
||||
|
||||
Swift Disc disk images
|
||||
|
||||
*********************************************************************/
|
||||
#ifndef MAME_FORMATS_SWD_DSK_H
|
||||
#define MAME_FORMATS_SWD_DSK_H
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "wd177x_dsk.h"
|
||||
|
||||
class swd_format : public wd177x_format {
|
||||
public:
|
||||
swd_format();
|
||||
|
||||
virtual const char *name() const override;
|
||||
virtual const char *description() const override;
|
||||
virtual const char *extensions() const override;
|
||||
|
||||
private:
|
||||
static const format formats[];
|
||||
virtual int get_image_offset(const format &f, int head, int track) override;
|
||||
};
|
||||
|
||||
extern const floppy_format_type FLOPPY_SWD_FORMAT;
|
||||
|
||||
#endif // MAME_FORMATS_SWD_DSK_H
|
||||
Loading…
Reference in New Issue
Block a user