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https://github.com/holub/mame
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Spectrum betadisk stuff (#5564)
* spectrum bus : rename beta.cpp to beta128.cpp as the original beta is somewhat different (nw) * (nw) * start making a device for the actual original beta disk interfaces (nw) * flesh out beta stuff a bit (nw)
This commit is contained in:
David Haywood
MetalliC
parent
a1b1b325b1
commit
b77d8ecb03
@ -3471,6 +3471,8 @@ if (BUSES["SPECTRUM"]~=null) then
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MAME_DIR .. "src/devices/bus/spectrum/exp.h",
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MAME_DIR .. "src/devices/bus/spectrum/beta.cpp",
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MAME_DIR .. "src/devices/bus/spectrum/beta.h",
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MAME_DIR .. "src/devices/bus/spectrum/beta128.cpp",
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MAME_DIR .. "src/devices/bus/spectrum/beta128.h",
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MAME_DIR .. "src/devices/bus/spectrum/intf1.cpp",
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MAME_DIR .. "src/devices/bus/spectrum/intf1.h",
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MAME_DIR .. "src/devices/bus/spectrum/intf2.cpp",
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@ -1,8 +1,67 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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// copyright-holders:Nigel Barnes, David Haywood
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/*********************************************************************
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Technology Research Beta 128 Disk interface
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Technology Research Beta Disk interface & clones
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these are designed for the 48k Spectrum models
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There are multiple versions of this
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'hand made' PCB with V2 ROM:
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- possible prototype / low production run
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- 4k ROM
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- FORMAT, COPY etc. must be loaded from a disk to be used
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- disks are password protected
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- uses 1771 disk controller
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https://www.youtube.com/watch?v=gSJIuZjbFYs
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Original Beta Disk release with V3 ROM:
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- same features as above
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- uses a 1793 controller
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Re-release dubbed "Beta Disk plus" with V4 ROM:
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- many operations moved into a larger capacity (8k) ROM rather
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than requiring a utility disk
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- uses a 1793 controller
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- adds 'magic button' to dump the running state of the machine
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to disk
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- disk password system removed
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Many clones exist, some specific to the various Spectrum clones.
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(not yet added)
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Original Beta Disk (V3) clones
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- Sandy FDD2 SP-DOS
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- AC DOS P.Z.APINA
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Beta Disk plus (V4) clones
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- CAS DOS Cheyenne Advanced System
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- CBI-95
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- SYNCHRON IDS91
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- SYNCHRON IDS2001ne
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- ARCADE AR-20
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- Vision Desktop Betadisk
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Some units also exist that allow population of both V3 and V4
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ROM types with a switch (unofficial, for compatibility?)
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---
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NOTE:
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ROMs really need verifying, real dumps appear to be bitswapped
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on original boards, so we're using those ones where possible,
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however sizes are unconfirmed (some sources state that the data
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is duplicated across the 16k in ROM, others state it just mirrors
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in memory) and some might be modified or bad.
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beta128.cpp could be modified to expand on this, as it builds
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on the features of the betaplus, but for now I've kept them
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separate as the enable / disable mechanisms are different and
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remaining mappings of devices unconfirmed
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These devices are not currently working as the disable logic is
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not understood.
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*********************************************************************/
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@ -14,32 +73,9 @@
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DEVICE DEFINITIONS
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***************************************************************************/
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DEFINE_DEVICE_TYPE(SPECTRUM_BETA128, spectrum_beta128_device, "spectrum_beta128", "TR Beta 128 Disk Interface")
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//-------------------------------------------------
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// INPUT_PORTS( beta128 )
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//-------------------------------------------------
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INPUT_PORTS_START(beta128)
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PORT_START("BUTTON")
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PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_NAME("Magic Button") PORT_CODE(KEYCODE_F12) PORT_CHANGED_MEMBER(DEVICE_SELF, spectrum_beta128_device, magic_button, 0)
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PORT_START("SWITCH")
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PORT_CONFNAME(0x03, 0x01, "System Switch") //PORT_CHANGED_MEMBER(DEVICE_SELF, spectrum_beta128_device, switch_changed, 0)
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PORT_CONFSETTING(0x00, "Off (128)")
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PORT_CONFSETTING(0x01, "Normal (auto-boot)")
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//PORT_CONFSETTING(0x02, "Reset") // TODO: implement RESET callback
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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_beta128_device::device_input_ports() const
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{
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return INPUT_PORTS_NAME(beta128);
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}
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DEFINE_DEVICE_TYPE(SPECTRUM_BETAV2, spectrum_betav2_device, "spectrum_betav2", "TR Beta Disk Interface (older, FD1771 based)")
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DEFINE_DEVICE_TYPE(SPECTRUM_BETAV3, spectrum_betav3_device, "spectrum_betav3", "TR Beta Disk Interface (newer, FD1793 based)")
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DEFINE_DEVICE_TYPE(SPECTRUM_BETAPLUS, spectrum_betaplus_device, "spectrum_betaplus", "TR Beta Disk Plus Interface")
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//-------------------------------------------------
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// SLOT_INTERFACE( beta_floppies )
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@ -54,7 +90,7 @@ static void beta_floppies(device_slot_interface &device)
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// floppy_format_type floppy_formats
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//-------------------------------------------------
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FLOPPY_FORMATS_MEMBER(spectrum_beta128_device::floppy_formats)
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FLOPPY_FORMATS_MEMBER(spectrum_betav2_device::floppy_formats)
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FLOPPY_TRD_FORMAT
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FLOPPY_FORMATS_END
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@ -62,28 +98,69 @@ FLOPPY_FORMATS_END
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// ROM( beta )
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//-------------------------------------------------
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ROM_START(beta128)
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ROM_START(betav2)
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ROM_REGION(0x4000, "rom", 0)
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ROM_DEFAULT_BIOS("trd504")
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ROM_SYSTEM_BIOS(0, "trd501", "TR-DOS v5.01")
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ROMX_LOAD("trd501.rom", 0x0000, 0x4000, CRC(3e3cdd4c) SHA1(8303ba0cc79daa6c04cd1e6ce27e8b6886a3f0de), ROM_BIOS(0))
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ROM_SYSTEM_BIOS(1, "trd503", "TR-DOS v5.03")
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ROMX_LOAD("trd503.rom", 0x0000, 0x4000, CRC(10751aba) SHA1(21695e3f2a8f796386ce66eea8a246b0ac44810c), ROM_BIOS(1))
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ROM_SYSTEM_BIOS(2, "trd504", "TR-DOS v5.04")
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ROMX_LOAD("trd504.rom", 0x0000, 0x4000, CRC(ba310874) SHA1(05e55e37df8eee6c68601ba9cf6c92195852ce3f), ROM_BIOS(2))
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ROM_DEFAULT_BIOS("trd20")
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ROM_SYSTEM_BIOS(0, "trd20", "TR-DOS v2.0")
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ROMX_LOAD("trd20.bin", 0x0000, 0x1000, CRC(dd269fb2) SHA1(ab394a19461f314fffd592645a273b85e76fadec), ROM_BIOS(0))
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ROM_RELOAD(0x1000,0x1000)
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ROM_RELOAD(0x2000,0x1000)
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ROM_RELOAD(0x3000,0x1000)
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ROM_END
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// there is an alt set CRC(48f9149f) SHA1(52774757096fdc93ea94c55306481f6f41204e96) with differences at 30e, 3cd, 404, 7bd, it appears to be a bad dump
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// 30c : call $2acd call $6acd
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// 3cc : ld hl, $5b00 ld hl, $5b01
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// 402 : call $2acd call $6bcd
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// 7bd : ld ($5d02), hl inc hl, ld (bc),a, ld e,l
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// the Profisoft version appears to be different code, maybe based on a different revision or even modified hw?
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ROM_START(betav3)
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ROM_REGION(0x4000, "rom", 0)
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ROM_DEFAULT_BIOS("trd30")
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ROM_SYSTEM_BIOS(0, "trd30", "TR-DOS v3.0 (set 1)")
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ROMX_LOAD("trd30.bin", 0x0000, 0x1000, CRC(c814179d) SHA1(b617ab59639beaa7b5d8e5b4e4a543a8eb0217c8), ROM_BIOS(0))
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ROM_RELOAD(0x1000,0x1000)
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ROM_RELOAD(0x2000,0x1000)
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ROM_RELOAD(0x3000,0x1000)
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// ROM_SYSTEM_BIOS(1, "trd30a", "TR-DOS v3.0 (set 2)")
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// ROMX_LOAD("trd30_alt.bin", 0x0000, 0x1000, CRC(48f9149f) SHA1(52774757096fdc93ea94c55306481f6f41204e96), ROM_BIOS(1))
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// ROM_RELOAD(0x1000,0x1000)
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// ROM_RELOAD(0x2000,0x1000)
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// ROM_RELOAD(0x3000,0x1000)
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ROM_SYSTEM_BIOS(1, "trd30p", "TR-DOS v3.0 (set 2, Profisoft)") // is this a clone device?
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ROMX_LOAD("trd30ps.bin", 0x0000, 0x1000, CRC(b0f175a3) SHA1(ac95bb4d89072224deef58a1655e8029f811a7fa), ROM_BIOS(1))
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ROM_RELOAD(0x1000,0x1000)
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ROM_RELOAD(0x2000,0x1000)
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ROM_RELOAD(0x3000,0x1000)
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ROM_END
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// some sources indicate these should be 16kb roms with both halves duplicated, others suggest the same but with the first byte being 0x00 instead (maybe an issue with the dumping)
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// there are also some '412' unscrambled dumps with most of the data in the mirror regions as 0xff (maybe official, maybe from clone devices that should be treated separately?)
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ROM_START(betaplus)
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ROM_REGION(0x4000, "rom", 0)
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ROM_DEFAULT_BIOS("trd409")
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ROM_SYSTEM_BIOS(0, "trd409", "TR-DOS v4.09")
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ROMX_LOAD("trd409.bin", 0x0000, 0x2000, CRC(18365bdc) SHA1(a0e7c80905423c54bd497575026ea8821061175a), ROM_BIOS(0))
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ROM_RELOAD(0x2000,0x2000)
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ROM_SYSTEM_BIOS(1, "trd411", "TR-DOS v4.11")
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ROMX_LOAD("trd411.bin", 0x0000, 0x2000, CRC(26902902) SHA1(cb90fc31bf62d5968730db23a600344338e31e7e), ROM_BIOS(1))
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ROM_RELOAD(0x2000,0x2000)
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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_beta128_device::device_add_mconfig(machine_config &config)
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void spectrum_betav2_device::device_add_mconfig_base(machine_config& config)
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{
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FD1793(config, m_fdc, 4_MHz_XTAL / 4);
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FLOPPY_CONNECTOR(config, "fdc:0", beta_floppies, "525qd", spectrum_beta128_device::floppy_formats).enable_sound(true);
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FLOPPY_CONNECTOR(config, "fdc:1", beta_floppies, "525qd", spectrum_beta128_device::floppy_formats).enable_sound(true);
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FLOPPY_CONNECTOR(config, "fdc:2", beta_floppies, nullptr, spectrum_beta128_device::floppy_formats).enable_sound(true);
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FLOPPY_CONNECTOR(config, "fdc:3", beta_floppies, nullptr, spectrum_beta128_device::floppy_formats).enable_sound(true);
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FLOPPY_CONNECTOR(config, "fdc:0", beta_floppies, "525qd", spectrum_betav2_device::floppy_formats).enable_sound(true);
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FLOPPY_CONNECTOR(config, "fdc:1", beta_floppies, "525qd", spectrum_betav2_device::floppy_formats).enable_sound(true);
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FLOPPY_CONNECTOR(config, "fdc:2", beta_floppies, nullptr, spectrum_betav2_device::floppy_formats).enable_sound(true);
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FLOPPY_CONNECTOR(config, "fdc:3", beta_floppies, nullptr, spectrum_betav2_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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@ -91,9 +168,31 @@ void spectrum_beta128_device::device_add_mconfig(machine_config &config)
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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_beta128_device::device_rom_region() const
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void spectrum_betav2_device::device_add_mconfig(machine_config &config)
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{
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return ROM_NAME(beta128);
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FD1771(config, m_fdc, 4_MHz_XTAL / 4);
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device_add_mconfig_base(config);
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}
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void spectrum_betav3_device::device_add_mconfig(machine_config& config)
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{
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FD1793(config, m_fdc, 4_MHz_XTAL / 4);
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device_add_mconfig_base(config);
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}
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const tiny_rom_entry *spectrum_betav2_device::device_rom_region() const
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{
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return ROM_NAME(betav2);
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}
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const tiny_rom_entry *spectrum_betav3_device::device_rom_region() const
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{
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return ROM_NAME(betav3);
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}
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const tiny_rom_entry *spectrum_betaplus_device::device_rom_region() const
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{
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return ROM_NAME(betaplus);
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}
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@ -102,69 +201,104 @@ const tiny_rom_entry *spectrum_beta128_device::device_rom_region() const
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//**************************************************************************
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//-------------------------------------------------
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// spectrum_beta128_device - constructor
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// spectrum_betav2_device - constructor
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//-------------------------------------------------
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spectrum_beta128_device::spectrum_beta128_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, SPECTRUM_BETA128, tag, owner, clock)
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spectrum_betav2_device::spectrum_betav2_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_switch(*this, "SWITCH")
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{
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}
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spectrum_betav2_device::spectrum_betav2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: spectrum_betav2_device(mconfig, SPECTRUM_BETAV2, tag, owner, clock)
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{
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}
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spectrum_betav3_device::spectrum_betav3_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
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: spectrum_betav2_device(mconfig, type, tag, owner, clock)
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{
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}
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spectrum_betav3_device::spectrum_betav3_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: spectrum_betav3_device(mconfig, SPECTRUM_BETAV3, tag, owner, clock)
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{
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}
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spectrum_betaplus_device::spectrum_betaplus_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
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: spectrum_betav3_device(mconfig, type, tag, owner, clock)
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{
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}
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spectrum_betaplus_device::spectrum_betaplus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: spectrum_betaplus_device(mconfig, SPECTRUM_BETAPLUS, 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_beta128_device::device_start()
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void spectrum_betav2_device::device_start()
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{
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save_item(NAME(m_romcs));
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#if 0 // we do this in realtime instead
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for (int i = 0; i < m_rom->bytes(); i++)
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{
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uint8_t* rom = m_rom->base();
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rom[i] = bitswap<8>(rom[i],0,6,5,4,3,2,1,7);
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}
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#endif
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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_beta128_device::device_reset()
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void spectrum_betav2_device::device_reset()
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{
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// Page in the ROM if auto-boot is selected
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if (m_switch->read() == 0x01)
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m_romcs = 1;
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else
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m_romcs = 0;
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// always paged in on boot? (no mode switch like beta128)
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m_romcs = 1;
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}
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//**************************************************************************
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// IMPLEMENTATION
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//**************************************************************************
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READ_LINE_MEMBER(spectrum_beta128_device::romcs)
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READ_LINE_MEMBER(spectrum_betav2_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_beta128_device::opcode_fetch(offs_t offset)
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void spectrum_betav2_device::opcode_fetch(offs_t offset)
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{
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m_exp->opcode_fetch(offset);
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if (!machine().side_effects_disabled())
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{
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if ((offset == 0x0066) || (offset & 0xff00) == 0x3d00)
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if ((offset & 0xff00) == 0x3c00)
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m_romcs = 1;
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else if (offset >= 0x4000)
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m_romcs = 0;
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// how does the ROM get disabled on these older beta units
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// there are no RETs that end up in RAM as with the 128
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// so it looks like jumps to the 0xxx and 1xxx regions, but
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// that doesn't work?
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}
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}
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uint8_t spectrum_beta128_device::iorq_r(offs_t offset)
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uint8_t spectrum_betav2_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 0 // this is the Beta 128 logic, it may or may not be the same here
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if (m_romcs)
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{
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switch (offset & 0xff)
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@ -180,11 +314,14 @@ uint8_t spectrum_beta128_device::iorq_r(offs_t offset)
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break;
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}
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}
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#endif
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return data;
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}
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void spectrum_beta128_device::iorq_w(offs_t offset, uint8_t data)
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void spectrum_betav2_device::iorq_w(offs_t offset, uint8_t data)
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{
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#if 0 // this is the Beta 128 logic, it may or may not be the same here
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if (m_romcs)
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{
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switch (offset & 0xff)
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@ -219,16 +356,18 @@ void spectrum_beta128_device::iorq_w(offs_t offset, uint8_t data)
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break;
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}
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}
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#endif
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m_exp->iorq_w(offset, data);
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}
|
||||
|
||||
uint8_t spectrum_beta128_device::mreq_r(offs_t offset)
|
||||
uint8_t spectrum_betav2_device::mreq_r(offs_t offset)
|
||||
{
|
||||
uint8_t data = 0xff;
|
||||
|
||||
if (m_romcs)
|
||||
{
|
||||
data = m_rom->base()[offset & 0x3fff];
|
||||
data = bitswap<8>(data,0,6,5,4,3,2,1,7); // proper dumps have bits 0 and 7 swapped?
|
||||
}
|
||||
|
||||
if (m_exp->romcs())
|
||||
@ -237,17 +376,30 @@ uint8_t spectrum_beta128_device::mreq_r(offs_t offset)
|
||||
return data;
|
||||
}
|
||||
|
||||
void spectrum_beta128_device::mreq_w(offs_t offset, uint8_t data)
|
||||
void spectrum_betav2_device::mreq_w(offs_t offset, uint8_t data)
|
||||
{
|
||||
if (m_exp->romcs())
|
||||
m_exp->mreq_w(offset, data);
|
||||
}
|
||||
|
||||
INPUT_CHANGED_MEMBER(spectrum_beta128_device::magic_button)
|
||||
// Betaplus has a 'magic button' for dumping RAM
|
||||
|
||||
INPUT_PORTS_START(betaplus)
|
||||
PORT_START("BUTTON") // don't use F12, it clashes with the 'exit from debugger' button
|
||||
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_NAME("Magic Button") PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHANGED_MEMBER(DEVICE_SELF, spectrum_betaplus_device, magic_button, 0)
|
||||
INPUT_PORTS_END
|
||||
|
||||
ioport_constructor spectrum_betaplus_device::device_input_ports() const
|
||||
{
|
||||
return INPUT_PORTS_NAME(betaplus);
|
||||
}
|
||||
|
||||
INPUT_CHANGED_MEMBER(spectrum_betaplus_device::magic_button)
|
||||
{
|
||||
if (newval && !oldval)
|
||||
{
|
||||
m_slot->nmi_w(ASSERT_LINE);
|
||||
m_romcs = 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
|
||||
@ -1,12 +1,12 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:Nigel Barnes
|
||||
// copyright-holders:Nigel Barnes, David Haywood
|
||||
/*********************************************************************
|
||||
|
||||
Technology Research Beta 128 Disk interface
|
||||
Technology Research Beta Disk interface
|
||||
|
||||
*********************************************************************/
|
||||
#ifndef MAME_BUS_SPECTRUM_BETA_H
|
||||
#define MAME_BUS_SPECTRUM_BETA_H
|
||||
#ifndef MAME_BUS_SPECTRUM_BETAV2_H
|
||||
#define MAME_BUS_SPECTRUM_BETAV2_H
|
||||
|
||||
#include "exp.h"
|
||||
#include "softlist.h"
|
||||
@ -18,17 +18,17 @@
|
||||
// TYPE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
class spectrum_beta128_device :
|
||||
class spectrum_betav2_device :
|
||||
public device_t,
|
||||
public device_spectrum_expansion_interface
|
||||
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
spectrum_beta128_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
spectrum_betav2_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
|
||||
spectrum_betav2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
DECLARE_FLOPPY_FORMATS(floppy_formats);
|
||||
DECLARE_INPUT_CHANGED_MEMBER(magic_button);
|
||||
|
||||
protected:
|
||||
// device-level overrides
|
||||
@ -36,9 +36,9 @@ protected:
|
||||
virtual void device_reset() override;
|
||||
|
||||
// optional information overrides
|
||||
void device_add_mconfig_base(machine_config& config);
|
||||
virtual void device_add_mconfig(machine_config &config) override;
|
||||
virtual const tiny_rom_entry *device_rom_region() const override;
|
||||
virtual ioport_constructor device_input_ports() const override;
|
||||
|
||||
virtual void opcode_fetch(offs_t offset) override;
|
||||
virtual uint8_t mreq_r(offs_t offset) override;
|
||||
@ -48,17 +48,47 @@ protected:
|
||||
virtual DECLARE_READ_LINE_MEMBER(romcs) override;
|
||||
|
||||
required_memory_region m_rom;
|
||||
required_device<fd1793_device> m_fdc;
|
||||
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_switch;
|
||||
|
||||
int m_romcs;
|
||||
};
|
||||
|
||||
class spectrum_betav3_device :
|
||||
public spectrum_betav2_device
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
spectrum_betav3_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
|
||||
spectrum_betav3_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
protected:
|
||||
virtual void device_add_mconfig(machine_config &config) override;
|
||||
virtual const tiny_rom_entry *device_rom_region() const override;
|
||||
|
||||
};
|
||||
|
||||
class spectrum_betaplus_device :
|
||||
public spectrum_betav3_device
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
spectrum_betaplus_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
|
||||
spectrum_betaplus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
DECLARE_INPUT_CHANGED_MEMBER(magic_button);
|
||||
|
||||
protected:
|
||||
virtual const tiny_rom_entry *device_rom_region() const override;
|
||||
virtual ioport_constructor device_input_ports() const override;
|
||||
|
||||
};
|
||||
|
||||
// device type definition
|
||||
DECLARE_DEVICE_TYPE(SPECTRUM_BETA128, spectrum_beta128_device)
|
||||
DECLARE_DEVICE_TYPE(SPECTRUM_BETAV2, spectrum_betav2_device)
|
||||
DECLARE_DEVICE_TYPE(SPECTRUM_BETAV3, spectrum_betav3_device)
|
||||
DECLARE_DEVICE_TYPE(SPECTRUM_BETAPLUS, spectrum_betaplus_device)
|
||||
|
||||
|
||||
#endif // MAME_BUS_SPECTRUM_BETA_H
|
||||
#endif // MAME_BUS_SPECTRUM_BETAV2_H
|
||||
|
||||
284
src/devices/bus/spectrum/beta128.cpp
Normal file
284
src/devices/bus/spectrum/beta128.cpp
Normal file
@ -0,0 +1,284 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:Nigel Barnes
|
||||
/*********************************************************************
|
||||
|
||||
Technology Research Beta 128 Disk interface
|
||||
|
||||
This hardware type runs TR-DOS 5.xx (official) and newer
|
||||
unofficial updates. It was designed to work properly with
|
||||
the 128k machines that had issues with the original Beta Disk
|
||||
due to changes in the 128k ROM structure etc. (enable address
|
||||
is moved from 3cxx to 3dxx for example)
|
||||
|
||||
Issues:
|
||||
|
||||
Using the FD1793 device a 'CAT' operation in the 'spectrum' driver
|
||||
will always report 'No Disk' but using the Soviet clone KR1818VG93
|
||||
it properly gives the disk catalogue. Despite this files can still
|
||||
be loaded from disk.
|
||||
|
||||
The 128k Spectrum drivers have a similar issues, although even if
|
||||
you replace the controller doing a 'CAT' operation seems to have
|
||||
an adverse effect on the system memory setup as things become
|
||||
corrupt (LOADing or MERGEing a program afterwards can cause a reset)
|
||||
|
||||
Neither of these issues occur in other Spectrum emulators using
|
||||
the same ROMs and floppy images.
|
||||
|
||||
TODO:
|
||||
|
||||
there were many unofficial ROMs available for this, make them
|
||||
available for use.
|
||||
|
||||
*********************************************************************/
|
||||
|
||||
#include "emu.h"
|
||||
#include "beta128.h"
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
DEVICE DEFINITIONS
|
||||
***************************************************************************/
|
||||
|
||||
DEFINE_DEVICE_TYPE(SPECTRUM_BETA128, spectrum_beta128_device, "spectrum_beta128", "TR Beta 128 Disk Interface")
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// INPUT_PORTS( beta128 )
|
||||
//-------------------------------------------------
|
||||
|
||||
INPUT_PORTS_START(beta128)
|
||||
PORT_START("BUTTON") // don't use F12, it clashes with the 'exit from debugger' button
|
||||
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_NAME("Magic Button") PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHANGED_MEMBER(DEVICE_SELF, spectrum_beta128_device, magic_button, 0)
|
||||
|
||||
PORT_START("SWITCH")
|
||||
PORT_CONFNAME(0x03, 0x01, "System Switch") //PORT_CHANGED_MEMBER(DEVICE_SELF, spectrum_beta128_device, switch_changed, 0)
|
||||
PORT_CONFSETTING(0x00, "Off (128)")
|
||||
PORT_CONFSETTING(0x01, "Normal (auto-boot)")
|
||||
//PORT_CONFSETTING(0x02, "Reset") // TODO: implement RESET callback
|
||||
INPUT_PORTS_END
|
||||
|
||||
//-------------------------------------------------
|
||||
// input_ports - device-specific input ports
|
||||
//-------------------------------------------------
|
||||
|
||||
ioport_constructor spectrum_beta128_device::device_input_ports() const
|
||||
{
|
||||
return INPUT_PORTS_NAME(beta128);
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// SLOT_INTERFACE( beta_floppies )
|
||||
//-------------------------------------------------
|
||||
|
||||
static void beta_floppies(device_slot_interface &device)
|
||||
{
|
||||
device.option_add("525qd", FLOPPY_525_QD);
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// floppy_format_type floppy_formats
|
||||
//-------------------------------------------------
|
||||
|
||||
FLOPPY_FORMATS_MEMBER(spectrum_beta128_device::floppy_formats)
|
||||
FLOPPY_TRD_FORMAT
|
||||
FLOPPY_FORMATS_END
|
||||
|
||||
//-------------------------------------------------
|
||||
// ROM( beta )
|
||||
//-------------------------------------------------
|
||||
|
||||
ROM_START(beta128)
|
||||
ROM_REGION(0x4000, "rom", 0)
|
||||
ROM_DEFAULT_BIOS("trd504")
|
||||
ROM_SYSTEM_BIOS(0, "trd501", "TR-DOS v5.01")
|
||||
ROMX_LOAD("trd501.rom", 0x0000, 0x4000, CRC(3e3cdd4c) SHA1(8303ba0cc79daa6c04cd1e6ce27e8b6886a3f0de), ROM_BIOS(0))
|
||||
ROM_SYSTEM_BIOS(1, "trd503", "TR-DOS v5.03")
|
||||
ROMX_LOAD("trd503.rom", 0x0000, 0x4000, CRC(10751aba) SHA1(21695e3f2a8f796386ce66eea8a246b0ac44810c), ROM_BIOS(1))
|
||||
ROM_SYSTEM_BIOS(2, "trd504", "TR-DOS v5.04")
|
||||
ROMX_LOAD("trd504.rom", 0x0000, 0x4000, CRC(ba310874) SHA1(05e55e37df8eee6c68601ba9cf6c92195852ce3f), ROM_BIOS(2))
|
||||
ROM_END
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_add_mconfig - add device configuration
|
||||
//-------------------------------------------------
|
||||
|
||||
void spectrum_beta128_device::device_add_mconfig(machine_config &config)
|
||||
{
|
||||
FD1793(config, m_fdc, 4_MHz_XTAL / 4);
|
||||
//KR1818VG93(config, m_fdc, 4_MHz_XTAL / 4);
|
||||
|
||||
FLOPPY_CONNECTOR(config, "fdc:0", beta_floppies, "525qd", spectrum_beta128_device::floppy_formats).enable_sound(true);
|
||||
FLOPPY_CONNECTOR(config, "fdc:1", beta_floppies, "525qd", spectrum_beta128_device::floppy_formats).enable_sound(true);
|
||||
FLOPPY_CONNECTOR(config, "fdc:2", beta_floppies, nullptr, spectrum_beta128_device::floppy_formats).enable_sound(true);
|
||||
FLOPPY_CONNECTOR(config, "fdc:3", beta_floppies, nullptr, spectrum_beta128_device::floppy_formats).enable_sound(true);
|
||||
|
||||
// passthru
|
||||
SPECTRUM_EXPANSION_SLOT(config, m_exp, spectrum_expansion_devices, nullptr);
|
||||
m_exp->irq_handler().set(DEVICE_SELF_OWNER, FUNC(spectrum_expansion_slot_device::irq_w));
|
||||
m_exp->nmi_handler().set(DEVICE_SELF_OWNER, FUNC(spectrum_expansion_slot_device::nmi_w));
|
||||
}
|
||||
|
||||
const tiny_rom_entry *spectrum_beta128_device::device_rom_region() const
|
||||
{
|
||||
return ROM_NAME(beta128);
|
||||
}
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// LIVE DEVICE
|
||||
//**************************************************************************
|
||||
|
||||
//-------------------------------------------------
|
||||
// spectrum_beta128_device - constructor
|
||||
//-------------------------------------------------
|
||||
|
||||
spectrum_beta128_device::spectrum_beta128_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
|
||||
: device_t(mconfig, SPECTRUM_BETA128, tag, owner, clock)
|
||||
, device_spectrum_expansion_interface(mconfig, *this)
|
||||
, m_rom(*this, "rom")
|
||||
, m_fdc(*this, "fdc")
|
||||
, m_floppy(*this, "fdc:%u", 0)
|
||||
, m_exp(*this, "exp")
|
||||
, m_switch(*this, "SWITCH")
|
||||
{
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_start - device-specific startup
|
||||
//-------------------------------------------------
|
||||
|
||||
void spectrum_beta128_device::device_start()
|
||||
{
|
||||
save_item(NAME(m_romcs));
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_reset - device-specific reset
|
||||
//-------------------------------------------------
|
||||
|
||||
void spectrum_beta128_device::device_reset()
|
||||
{
|
||||
// Page in the ROM if auto-boot is selected
|
||||
if (m_switch->read() == 0x01)
|
||||
m_romcs = 1;
|
||||
else
|
||||
m_romcs = 0;
|
||||
}
|
||||
|
||||
//**************************************************************************
|
||||
// IMPLEMENTATION
|
||||
//**************************************************************************
|
||||
|
||||
READ_LINE_MEMBER(spectrum_beta128_device::romcs)
|
||||
{
|
||||
return m_romcs | m_exp->romcs();
|
||||
}
|
||||
|
||||
|
||||
void spectrum_beta128_device::opcode_fetch(offs_t offset)
|
||||
{
|
||||
m_exp->opcode_fetch(offset);
|
||||
|
||||
if (!machine().side_effects_disabled())
|
||||
{
|
||||
if ((offset == 0x0066) || (offset & 0xff00) == 0x3d00)
|
||||
m_romcs = 1;
|
||||
else if (offset >= 0x4000)
|
||||
m_romcs = 0;
|
||||
}
|
||||
}
|
||||
|
||||
uint8_t spectrum_beta128_device::iorq_r(offs_t offset)
|
||||
{
|
||||
uint8_t data = m_exp->iorq_r(offset);
|
||||
|
||||
if (m_romcs)
|
||||
{
|
||||
switch (offset & 0xff)
|
||||
{
|
||||
case 0x1f: case 0x3f: case 0x5f: case 0x7f:
|
||||
data = m_fdc->read((offset >> 5) & 0x03);
|
||||
break;
|
||||
|
||||
case 0xff:
|
||||
data &= 0x3f; // actually open bus
|
||||
data |= m_fdc->drq_r() ? 0x40 : 0;
|
||||
data |= m_fdc->intrq_r() ? 0x80 : 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return data;
|
||||
}
|
||||
|
||||
void spectrum_beta128_device::iorq_w(offs_t offset, uint8_t data)
|
||||
{
|
||||
if (m_romcs)
|
||||
{
|
||||
switch (offset & 0xff)
|
||||
{
|
||||
case 0x1f: case 0x3f: case 0x5f: case 0x7f:
|
||||
m_fdc->write((offset >> 5) & 0x03, data);
|
||||
break;
|
||||
|
||||
case 0xff:
|
||||
floppy_image_device* floppy = m_floppy[data & 3]->get_device();
|
||||
|
||||
m_fdc->set_floppy(floppy);
|
||||
if (floppy)
|
||||
floppy->ss_w(BIT(data, 4) ? 0 : 1);
|
||||
m_fdc->dden_w(BIT(data, 6));
|
||||
|
||||
// bit 3 connected to pin 23 "HLT" of FDC and via diode to INDEX
|
||||
//m_fdc->hlt_w(BIT(data, 3)); // not handled in current wd_fdc
|
||||
|
||||
if (BIT(data, 2) == 0) // reset
|
||||
{
|
||||
m_fdc->reset();
|
||||
if (floppy)
|
||||
floppy->mon_w(ASSERT_LINE);
|
||||
}
|
||||
else
|
||||
{
|
||||
// TODO: implement correct motor control, FDD motor and RDY FDC pin controlled by HLD pin of FDC
|
||||
if (floppy)
|
||||
floppy->mon_w(CLEAR_LINE);
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
m_exp->iorq_w(offset, data);
|
||||
}
|
||||
|
||||
uint8_t spectrum_beta128_device::mreq_r(offs_t offset)
|
||||
{
|
||||
uint8_t data = 0xff;
|
||||
|
||||
if (m_romcs)
|
||||
{
|
||||
data = m_rom->base()[offset & 0x3fff];
|
||||
}
|
||||
|
||||
if (m_exp->romcs())
|
||||
data &= m_exp->mreq_r(offset);
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
void spectrum_beta128_device::mreq_w(offs_t offset, uint8_t data)
|
||||
{
|
||||
if (m_exp->romcs())
|
||||
m_exp->mreq_w(offset, data);
|
||||
}
|
||||
|
||||
INPUT_CHANGED_MEMBER(spectrum_beta128_device::magic_button)
|
||||
{
|
||||
if (newval && !oldval)
|
||||
{
|
||||
m_slot->nmi_w(ASSERT_LINE);
|
||||
}
|
||||
else
|
||||
{
|
||||
m_slot->nmi_w(CLEAR_LINE);
|
||||
}
|
||||
}
|
||||
64
src/devices/bus/spectrum/beta128.h
Normal file
64
src/devices/bus/spectrum/beta128.h
Normal file
@ -0,0 +1,64 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:Nigel Barnes
|
||||
/*********************************************************************
|
||||
|
||||
Technology Research Beta 128 Disk interface
|
||||
|
||||
*********************************************************************/
|
||||
#ifndef MAME_BUS_SPECTRUM_BETA128_H
|
||||
#define MAME_BUS_SPECTRUM_BETA128_H
|
||||
|
||||
#include "exp.h"
|
||||
#include "softlist.h"
|
||||
#include "imagedev/floppy.h"
|
||||
#include "machine/wd_fdc.h"
|
||||
#include "formats/trd_dsk.h"
|
||||
|
||||
//**************************************************************************
|
||||
// TYPE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
class spectrum_beta128_device :
|
||||
public device_t,
|
||||
public device_spectrum_expansion_interface
|
||||
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
spectrum_beta128_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
DECLARE_FLOPPY_FORMATS(floppy_formats);
|
||||
DECLARE_INPUT_CHANGED_MEMBER(magic_button);
|
||||
|
||||
protected:
|
||||
// device-level overrides
|
||||
virtual void device_start() override;
|
||||
virtual void device_reset() override;
|
||||
|
||||
// optional information overrides
|
||||
virtual void device_add_mconfig(machine_config &config) override;
|
||||
virtual const tiny_rom_entry *device_rom_region() const override;
|
||||
virtual ioport_constructor device_input_ports() const override;
|
||||
|
||||
virtual void 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;
|
||||
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_switch;
|
||||
|
||||
int m_romcs;
|
||||
};
|
||||
|
||||
|
||||
// device type definition
|
||||
DECLARE_DEVICE_TYPE(SPECTRUM_BETA128, spectrum_beta128_device)
|
||||
|
||||
|
||||
#endif // MAME_BUS_SPECTRUM_BETA128_H
|
||||
@ -169,6 +169,7 @@ void spectrum_expansion_slot_device::mreq_w(offs_t offset, uint8_t data)
|
||||
|
||||
// slot devices
|
||||
#include "beta.h"
|
||||
#include "beta128.h"
|
||||
//#include "disciple.h"
|
||||
#include "intf1.h"
|
||||
#include "intf2.h"
|
||||
@ -189,6 +190,9 @@ void spectrum_expansion_slot_device::mreq_w(offs_t offset, uint8_t data)
|
||||
|
||||
void spectrum_expansion_devices(device_slot_interface &device)
|
||||
{
|
||||
device.option_add("betav2", SPECTRUM_BETAV2);
|
||||
device.option_add("betav3", SPECTRUM_BETAV3);
|
||||
device.option_add("betaplus", SPECTRUM_BETAPLUS);
|
||||
device.option_add("beta128", SPECTRUM_BETA128);
|
||||
//device.option_add("disciple", SPECTRUM_DISCIPLE);
|
||||
device.option_add("intf1", SPECTRUM_INTF1);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user