mirror of
https://github.com/holub/mame
synced 2025-04-25 09:50:04 +03:00
New NOT WORKING machine
======================= BT Merlin M2105 [Nigel Barnes]
This commit is contained in:
Nigel Barnes
parent
4345b83f37
commit
e7b79b1b52
@ -570,6 +570,8 @@ if (BUSES["ECONET"]~=null) then
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MAME_DIR .. "src/devices/bus/econet/econet.h",
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MAME_DIR .. "src/devices/bus/econet/e01.cpp",
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MAME_DIR .. "src/devices/bus/econet/e01.h",
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MAME_DIR .. "src/devices/bus/econet/ebridge.cpp",
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MAME_DIR .. "src/devices/bus/econet/ebridge.h",
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}
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end
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@ -583,6 +585,8 @@ if (BUSES["ELECTRON"]~=null) then
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files {
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MAME_DIR .. "src/devices/bus/electron/exp.cpp",
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MAME_DIR .. "src/devices/bus/electron/exp.h",
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MAME_DIR .. "src/devices/bus/electron/m2105.cpp",
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MAME_DIR .. "src/devices/bus/electron/m2105.h",
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}
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end
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@ -32,7 +32,7 @@ device_electron_expansion_interface::device_electron_expansion_interface(const m
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//-------------------------------------------------
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// ~device_electron_expansion_card_interface - destructor
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// ~device_electron_expansion_interface - destructor
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//-------------------------------------------------
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device_electron_expansion_interface::~device_electron_expansion_interface()
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@ -49,8 +49,22 @@ device_electron_expansion_interface::~device_electron_expansion_interface()
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//-------------------------------------------------
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electron_expansion_slot_device::electron_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
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device_t(mconfig, ELECTRON_EXPANSION_SLOT, "Expansion port", tag, owner, clock, "electron_expansion_slot", __FILE__),
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device_slot_interface(mconfig, *this)
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device_t(mconfig, ELECTRON_EXPANSION_SLOT, "Acorn Electron Expansion port", tag, owner, clock, "electron_expansion_slot", __FILE__),
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device_slot_interface(mconfig, *this),
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m_io(nullptr),
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m_card(nullptr),
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m_irq_handler(*this),
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m_nmi_handler(*this),
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m_reset_handler(*this)
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{
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}
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//-------------------------------------------------
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// expansion_slot_device - destructor
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//-------------------------------------------------
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electron_expansion_slot_device::~electron_expansion_slot_device()
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{
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}
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@ -61,10 +75,12 @@ electron_expansion_slot_device::electron_expansion_slot_device(const machine_con
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void electron_expansion_slot_device::device_start()
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{
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m_card = dynamic_cast<device_electron_expansion_interface *>(get_card_device());
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// resolve callbacks
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m_irq_handler.resolve_safe();
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m_nmi_handler.resolve_safe();
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m_reset_handler.resolve_safe();
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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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@ -77,6 +93,15 @@ void electron_expansion_slot_device::device_reset()
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}
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}
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//-------------------------------------------------
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// set_io_space - set address space we are attached to
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//-------------------------------------------------
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void electron_expansion_slot_device::set_io_space(address_space *io)
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{
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m_io = io;
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}
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//-------------------------------------------------
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// SLOT_INTERFACE( electron_expansion_devices )
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@ -90,7 +115,7 @@ void electron_expansion_slot_device::device_reset()
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//#include "aplus5.h"
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//#include "slogger.h"
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//#include "fbjoy.h"
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//#include "m2105.h"
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#include "m2105.h"
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SLOT_INTERFACE_START( electron_expansion_devices )
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@ -100,5 +125,5 @@ SLOT_INTERFACE_START( electron_expansion_devices )
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//SLOT_INTERFACE("aplus5", ELECTRON_APLUS5)
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//SLOT_INTERFACE("slogger", ELECTRON_SLOGGER)
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//SLOT_INTERFACE("fbjoy", ELECTRON_FBJOY)
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//SLOT_INTERFACE("m2105", ELECTRON_M2105)
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SLOT_INTERFACE("m2105", ELECTRON_M2105)
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SLOT_INTERFACE_END
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@ -8,78 +8,78 @@
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Pinout:
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18V AC 2 1 18V AC
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AC RETURN 4 3 AC RETURN
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-5V 6 5 -5V
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0V 8 7 0V
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+5V 10 9 +5V
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16MHz 12 11 SOUND O/P
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PHI OUT 14 13 13 IN
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NMI 16 15 RST
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R/W 18 17 IRQ
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D6 20 19 D7
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D4 22 21 D5
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D2 24 23 D3
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D0 26 25 D1
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NC 28 27 RDY
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SLOT 30 29 SLOT
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A14 32 31 A15
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A12 34 33 A13
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A10 36 35 A11
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A0 38 37 A9
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A2 40 39 A1
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A4 42 41 A3
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A6 44 43 A5
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A8 46 45 A7
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0V 48 47 0V
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+5V 50 49 +5V
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18V AC 2 1 18V AC
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AC RETURN 4 3 AC RETURN
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-5V 6 5 -5V
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0V 8 7 0V
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+5V 10 9 +5V
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16MHz 12 11 SOUND O/P
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PHI OUT 14 13 /13 IN
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NMI 16 15 RST
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R/W 18 17 IRQ
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D6 20 19 D7
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D4 22 21 D5
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D2 24 23 D3
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D0 26 25 D1
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NC 28 27 RDY
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SLOT 30 29 SLOT
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A14 32 31 A15
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A12 34 33 A13
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A10 36 35 A11
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A0 38 37 A9
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A2 40 39 A1
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A4 42 41 A3
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A6 44 43 A5
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A8 46 45 A7
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0V 48 47 0V
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+5V 50 49 +5V
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Signal Definitions:
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18V AC (pins 1,2) - These lines are connected directly to the output from the Electron mains power
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18V AC (pins 1,2) - These lines are connected directly to the output from the Electron mains power
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AC RETURNS (pins 3,4) - adaptor. A total of 6W may be drawn from these lines as long as no power is
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taken from +5V (pins 9,10,49,50). For safety reasons these lines must never
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be used as an AC input to the Electron.
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-5V (pins 5,6) - A -5V supply from the Electron. Up to 20mA (total) may safely be drawn
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from this line by expansion modules.
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0V (pins 7,8,47,48) - Ground. Expansion modules with their own power supply must have the 0V
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lines commoned with the Electron.
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taken from +5V (pins 9,10,49,50). For safety reasons these lines must never
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be used as an AC input to the Electron.
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-5V (pins 5,6) - A -5V supply from the Electron. Up to 20mA (total) may safely be drawn
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from this line by expansion modules.
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0V (pins 7,8,47,48) - Ground. Expansion modules with their own power supply must have the 0V
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lines commoned with the Electron.
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+5V (pins 9,10,49,50) - A +5V supply from the Electron. Up to 500mA (total) may safely be drawn
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from this line by expansion modules as long as no power is taken from 18V
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AC (pins 1,2,3,4).
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SOUND O/P (pin 11) - Sound output. A 3V peak to peak source via a 1K series resistor from the
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Electron ULA.
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16 MHz (pin 12) - 16 Megahertz from the Electron main oscillator. This output may be used
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for clock generation within an expansion module.
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/13 IN (pin 13) - 16 Megahertz divided by 13. This output may be used for baud rate
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generation. If divided by 1024 it will give approximately 1200Hz.
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PHI OUT (pin 14) - The 6502 input clock. The low time is nominally 250ns. The high time may
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be 250ns (2MHz operation when reading ROMs) or 750ns or 1250ns
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(stretched clock for a 1MHz access, the length depending on the phase of the
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2MHz clock) or up to 40us (if in modes 0-3)
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RST (pin 15) - Reset (active low). This is an OUTPUT ONLY for the system reset line. It
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may be used to initialise expansion modules on power up and when the
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BREAK key is pressed.
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NMI (pin 16) - Non-Maskable Interrupt (negative edge triggered). This is the system NMI
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line which is open collector (wire-OR) and may be asserted by an expansion
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module. The pull-up resistor on this line inside the ULA is 3k3. Care must
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be taken to avoid masking other interrupts by holding the line low. Using
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NMI on the Electron requires knowledge of operating system protocols.
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IRQ (pin 17) - Interrupt Request (active low). This is the system IRQ line which is open
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collector (wire-OR) and may be asserted by an expansion module. The pull-
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up resistor on this line inside the ULA is 3k3. It is essential for the correct
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operation of the machine that interrupts to not occur until the software is
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capable of dealing with them. Interrupts on the Electron expansion bus should
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therefore be disabled on power-up and reset. Significant use of interrupt
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service time may affect other machine functions, eg the real time clock.
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R/W (pin 18) - The system read/write line from the 6502.
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D7-D0 (pins 19-26) - Bi-directional data bus. The direction of data is determined by R/W.
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RDY (pin 27) - 6502 ready line (active low). May be asserted by an expansion module to
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stop the processor when reading slow memory. This line works on read only
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(R/W=1).
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(pin 28) - No connection
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(pins 29,30) - Polarising key connector.
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A0-A15 (pins 31-46) - 6502 address bus.
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from this line by expansion modules as long as no power is taken from 18V
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AC (pins 1,2,3,4).
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SOUND O/P (pin 11) - Sound output. A 3V peak to peak source via a 1K series resistor from the
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Electron ULA.
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16 MHz (pin 12) - 16 Megahertz from the Electron main oscillator. This output may be used
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for clock generation within an expansion module.
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/13 IN (pin 13) - 16 Megahertz divided by 13. This output may be used for baud rate
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generation. If divided by 1024 it will give approximately 1200Hz.
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PHI OUT (pin 14) - The 6502 input clock. The low time is nominally 250ns. The high time may
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be 250ns (2MHz operation when reading ROMs) or 750ns or 1250ns
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(stretched clock for a 1MHz access, the length depending on the phase of the
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2MHz clock) or up to 40us (if in modes 0-3)
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RST (pin 15) - Reset (active low). This is an OUTPUT ONLY for the system reset line. It
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may be used to initialise expansion modules on power up and when the
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BREAK key is pressed.
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NMI (pin 16) - Non-Maskable Interrupt (negative edge triggered). This is the system NMI
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line which is open collector (wire-OR) and may be asserted by an expansion
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module. The pull-up resistor on this line inside the ULA is 3k3. Care must
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be taken to avoid masking other interrupts by holding the line low. Using
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NMI on the Electron requires knowledge of operating system protocols.
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IRQ (pin 17) - Interrupt Request (active low). This is the system IRQ line which is open
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collector (wire-OR) and may be asserted by an expansion module. The pull-
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up resistor on this line inside the ULA is 3k3. It is essential for the correct
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operation of the machine that interrupts to not occur until the software is
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capable of dealing with them. Interrupts on the Electron expansion bus should
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therefore be disabled on power-up and reset. Significant use of interrupt
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service time may affect other machine functions, eg the real time clock.
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R/W (pin 18) - The system read/write line from the 6502.
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D7-D0 (pins 19-26) - Bi-directional data bus. The direction of data is determined by R/W.
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RDY (pin 27) - 6502 ready line (active low). May be asserted by an expansion module to
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stop the processor when reading slow memory. This line works on read only
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(R/W=1).
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(pin 28) - No connection
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(pins 29,30) - Polarising key connector.
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A0-A15 (pins 31-46) - 6502 address bus.
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**********************************************************************/
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@ -106,8 +106,20 @@ AC RETURNS (pins 3,4) - adaptor. A total of 6W may be drawn from these lines as
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MCFG_DEVICE_ADD(_tag, ELECTRON_EXPANSION_SLOT, 0) \
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MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false)
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#define MCFG_ELECTRON_PASSTHRU_EXPANSION_SLOT_ADD() \
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MCFG_ELECTRON_EXPANSION_SLOT_ADD(ELECTRON_EXPANSION_SLOT_TAG, 0, electron_expansion_devices, nullptr)
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#define MCFG_ELECTRON_PASSTHRU_EXPANSION_SLOT_ADD(_def_slot) \
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MCFG_ELECTRON_EXPANSION_SLOT_ADD(ELECTRON_EXPANSION_SLOT_TAG, electron_expansion_devices, _def_slot) \
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MCFG_ELECTRON_EXPANSION_SLOT_IRQ_HANDLER(DEVWRITELINE(DEVICE_SELF_OWNER, electron_expansion_slot_device, irq_w)) \
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MCFG_ELECTRON_EXPANSION_SLOT_NMI_HANDLER(DEVWRITELINE(DEVICE_SELF_OWNER, electron_expansion_slot_device, nmi_w)) \
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MCFG_ELECTRON_EXPANSION_SLOT_RES_HANDLER(DEVWRITELINE(DEVICE_SELF_OWNER, electron_expansion_slot_device, reset_w))
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#define MCFG_ELECTRON_EXPANSION_SLOT_IRQ_HANDLER(_devcb) \
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devcb = &electron_expansion_slot_device::set_irq_handler(*device, DEVCB_##_devcb);
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#define MCFG_ELECTRON_EXPANSION_SLOT_NMI_HANDLER(_devcb) \
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devcb = &electron_expansion_slot_device::set_nmi_handler(*device, DEVCB_##_devcb);
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#define MCFG_ELECTRON_EXPANSION_SLOT_RES_HANDLER(_devcb) \
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devcb = &electron_expansion_slot_device::set_reset_handler(*device, DEVCB_##_devcb);
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//**************************************************************************
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@ -118,13 +130,30 @@ AC RETURNS (pins 3,4) - adaptor. A total of 6W may be drawn from these lines as
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class device_electron_expansion_interface;
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class electron_expansion_slot_device : public device_t,
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public device_slot_interface
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class electron_expansion_slot_device : public device_t, public device_slot_interface
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{
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public:
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// construction/destruction
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electron_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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virtual ~electron_expansion_slot_device() {}
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virtual ~electron_expansion_slot_device();
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void set_io_space(address_space *io);
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// callbacks
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template<class _Object> static devcb_base &set_irq_handler(device_t &device, _Object object)
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{ return downcast<electron_expansion_slot_device &>(device).m_irq_handler.set_callback(object); }
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template<class _Object> static devcb_base &set_nmi_handler(device_t &device, _Object object)
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{ return downcast<electron_expansion_slot_device &>(device).m_nmi_handler.set_callback(object); }
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template<class _Object> static devcb_base &set_reset_handler(device_t &device, _Object object)
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{ return downcast<electron_expansion_slot_device &>(device).m_reset_handler.set_callback(object); }
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DECLARE_WRITE_LINE_MEMBER( irq_w ) { m_irq_handler(state); }
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DECLARE_WRITE_LINE_MEMBER( nmi_w ) { m_nmi_handler(state); }
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DECLARE_WRITE_LINE_MEMBER( reset_w ) { m_reset_handler(state); }
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address_space *m_io;
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protected:
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// device-level overrides
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@ -132,10 +161,15 @@ protected:
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virtual void device_reset() override;
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device_electron_expansion_interface *m_card;
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private:
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devcb_write_line m_irq_handler;
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devcb_write_line m_nmi_handler;
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devcb_write_line m_reset_handler;
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};
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// ======================> device_electron_expansion_card_interface
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// ======================> device_electron_expansion_interface
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class device_electron_expansion_interface : public device_slot_card_interface
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{
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154
src/devices/bus/electron/m2105.cpp
Normal file
154
src/devices/bus/electron/m2105.cpp
Normal file
@ -0,0 +1,154 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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/**********************************************************************
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BT Merlin M2105
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**********************************************************************/
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#include "m2105.h"
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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const device_type ELECTRON_M2105 = &device_creator<electron_m2105_device>;
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//-------------------------------------------------
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// ROM( m2105 )
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//-------------------------------------------------
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ROM_START( m2105 )
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ROM_REGION(0x40000, "exp_rom", 0)
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ROM_DEFAULT_BIOS("350")
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ROM_SYSTEM_BIOS(0, "350", "v3.50")
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ROMX_LOAD("ic22-sm-35l-1.ic22", 0x30000, 0x4000, CRC(e8f8a639) SHA1(eb7fa1e884be9c072ae0c1e598507b802422127f), ROM_BIOS(1))
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ROMX_LOAD("ic23-sm-35l-1.ic23", 0x34000, 0x4000, CRC(b1bb1d83) SHA1(07ca3a93744519b8d03bbf1c3c3537c0a0a3c6fe), ROM_BIOS(1))
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ROMX_LOAD("sk01-pc-35l-1.ic24", 0x38000, 0x4000, CRC(54fd4c09) SHA1(9588296306581580ba223cf6bce4be61476f14c4), ROM_BIOS(1))
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ROMX_LOAD("sk02-pc-35l-1.ic24", 0x3c000, 0x4000, CRC(c08de988) SHA1(86f2da5f8e9a5301ad40360e286f841f42e94a99), ROM_BIOS(1))
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ROM_SYSTEM_BIOS(1, "340", "v3.40")
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ROMX_LOAD("ic22-sm-34l-1.ic22", 0x30000, 0x4000, CRC(b514b15f) SHA1(a9c6c20b5a4f860b000511dde2f54497bcdd97b0), ROM_BIOS(2))
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ROMX_LOAD("ic23-sm-34l-1.ic23", 0x34000, 0x4000, CRC(18875889) SHA1(d1a7dd87c4d99869a1961becec5e9d567d8fad53), ROM_BIOS(2))
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ROMX_LOAD("sk01-pc-34l-1.ic24", 0x38000, 0x4000, CRC(a8796c9e) SHA1(29bc01b8f7617b252e4b243d13b1bbd3cd32cc3b), ROM_BIOS(2))
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ROMX_LOAD("sk02-pc-34l-1.ic24", 0x3c000, 0x4000, CRC(fa74063c) SHA1(cdc31c606e69e7a6d221b7340a310d475d487fc9), ROM_BIOS(2))
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ROM_SYSTEM_BIOS(2, "207", "v2.07")
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ROMX_LOAD("ic22-sm-207l-1.ic22", 0x30000, 0x4000, CRC(0c431547) SHA1(13d2eab49b9c79f507b7dd8436d1e56cf43be412), ROM_BIOS(3))
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ROMX_LOAD("ic23-sm-207l-1.ic23", 0x34000, 0x4000, CRC(15044d49) SHA1(e75fe4321579a9027527a0e256050d1444b3fe82), ROM_BIOS(3))
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ROMX_LOAD("sk01-pc-207l-1.ic24", 0x38000, 0x4000, CRC(0850bcea) SHA1(270e7a31e69e1454cfb70ced23a50f5d97efe4d5), ROM_BIOS(3))
|
||||
ROMX_LOAD("sk02-pc-207l-1.ic24", 0x3c000, 0x4000, CRC(d8b9143f) SHA1(4e132c7a6dae4caf7203139b51882706d508c449), ROM_BIOS(3))
|
||||
|
||||
ROM_REGION(0x8000, "vsm", 0) /* system speech PHROM */
|
||||
ROM_LOAD("phroma.bin", 0x0000, 0x4000, CRC(98e1bf9e) SHA1(b369809275cb67dfd8a749265e91adb2d2558ae6))
|
||||
ROM_END
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// ADDRESS_MAP( m2105 )
|
||||
//-------------------------------------------------
|
||||
|
||||
//static ADDRESS_MAP_START( m2105_mem, AS_IO, 8, electron_m2105_device )
|
||||
// AM_RANGE(0x30000, 0x3ffff) AM_MIRROR(0x4000) AM_ROM AM_REGION("m2105_rom", 0)
|
||||
//ADDRESS_MAP_END
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// MACHINE_DRIVER( m2105 )
|
||||
//-------------------------------------------------
|
||||
|
||||
static MACHINE_CONFIG_FRAGMENT( m2105 )
|
||||
/* sound hardware */
|
||||
MCFG_SPEAKER_STANDARD_MONO("mono")
|
||||
|
||||
/* system via */
|
||||
MCFG_DEVICE_ADD("via6522_0", VIA6522, 1000000)
|
||||
/*MCFG_VIA6522_READPA_HANDLER(READ8(electron_m2105_device, m2105_via_system_read_porta))
|
||||
MCFG_VIA6522_READPB_HANDLER(READ8(electron_m2105_device, m2105_via_system_read_portb))
|
||||
MCFG_VIA6522_WRITEPA_HANDLER(WRITE8(electron_m2105_device, m2105_via_system_write_porta))
|
||||
MCFG_VIA6522_WRITEPB_HANDLER(WRITE8(electron_m2105_device, m2105_via_system_write_portb))
|
||||
MCFG_VIA6522_IRQ_HANDLER(WRITELINE(electron_m2105_device, m2105_via_system_irq_w))*/
|
||||
|
||||
/* user via */
|
||||
MCFG_DEVICE_ADD("via6522_1", VIA6522, 1000000)
|
||||
//MCFG_VIA6522_READPB_HANDLER(READ8(electron_m2105_device, m2105_via_user_read_portb))
|
||||
MCFG_VIA6522_WRITEPA_HANDLER(DEVWRITE8("cent_data_out", output_latch_device, write))
|
||||
//MCFG_VIA6522_WRITEPB_HANDLER(WRITE8(electron_m2105_device, m2105_via_user_write_portb))
|
||||
MCFG_VIA6522_CA2_HANDLER(DEVWRITELINE("centronics", centronics_device, write_strobe))
|
||||
//MCFG_VIA6522_IRQ_HANDLER(WRITELINE(electron_m2105_device, m2105_via_user_irq_w))
|
||||
|
||||
/* speech hardware */
|
||||
MCFG_DEVICE_ADD("vsm", SPEECHROM, 0)
|
||||
MCFG_SOUND_ADD("tms5220", TMS5220, 640000)
|
||||
MCFG_TMS52XX_SPEECHROM("vsm")
|
||||
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
|
||||
|
||||
/* duart */
|
||||
MCFG_MC68681_ADD("sc2681", XTAL_3_6864MHz)
|
||||
//MCFG_MC68681_IRQ_CALLBACK(DEVWRITELINE("maincpu", i80186_cpu_device, int0_w))
|
||||
//MCFG_MC68681_A_TX_CALLBACK(DEVWRITELINE("rs232_1", rs232_port_device, write_txd))
|
||||
//MCFG_MC68681_B_TX_CALLBACK(DEVWRITELINE("rs232_2", rs232_port_device, write_txd))
|
||||
//MCFG_MC68681_OUTPORT_CALLBACK(WRITE8(electron_m2105_device, sio_out_w))
|
||||
|
||||
//MCFG_RS232_PORT_ADD("rs232_1", default_rs232_devices, "terminal")
|
||||
//MCFG_RS232_RXD_HANDLER(DEVWRITELINE("sc2681", mc68681_device, rx_a_w))
|
||||
//MCFG_RS232_PORT_ADD("rs232_2", default_rs232_devices, nullptr)
|
||||
//MCFG_RS232_RXD_HANDLER(DEVWRITELINE("sc2681", mc68681_device, rx_b_w))
|
||||
|
||||
/* printer */
|
||||
MCFG_CENTRONICS_ADD("centronics", centronics_devices, "printer")
|
||||
MCFG_CENTRONICS_ACK_HANDLER(DEVWRITELINE("via6522_1", via6522_device, write_ca1)) MCFG_DEVCB_INVERT /* ack seems to be inverted? */
|
||||
MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics")
|
||||
MACHINE_CONFIG_END
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// machine_config_additions - device-specific
|
||||
// machine configurations
|
||||
//-------------------------------------------------
|
||||
|
||||
machine_config_constructor electron_m2105_device::device_mconfig_additions() const
|
||||
{
|
||||
return MACHINE_CONFIG_NAME( m2105 );
|
||||
}
|
||||
|
||||
const rom_entry *electron_m2105_device::device_rom_region() const
|
||||
{
|
||||
return ROM_NAME( m2105 );
|
||||
}
|
||||
|
||||
//**************************************************************************
|
||||
// LIVE DEVICE
|
||||
//**************************************************************************
|
||||
|
||||
//-------------------------------------------------
|
||||
// electron_m2105_device - constructor
|
||||
//-------------------------------------------------
|
||||
|
||||
electron_m2105_device::electron_m2105_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
|
||||
: device_t(mconfig, ELECTRON_M2105, "BT Merlin M2105", tag, owner, clock, "electron_m2105", __FILE__),
|
||||
device_electron_expansion_interface(mconfig, *this),
|
||||
m_exp_rom(*this, "exp_rom"),
|
||||
m_via6522_0(*this, "via6522_0"),
|
||||
m_via6522_1(*this, "via6522_1"),
|
||||
m_tms(*this, "tms5220"),
|
||||
m_centronics(*this, "centronics")
|
||||
{
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_start - device-specific startup
|
||||
//-------------------------------------------------
|
||||
|
||||
void electron_m2105_device::device_start()
|
||||
{
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_reset - device-specific reset
|
||||
//-------------------------------------------------
|
||||
|
||||
void electron_m2105_device::device_reset()
|
||||
{
|
||||
}
|
||||
55
src/devices/bus/electron/m2105.h
Normal file
55
src/devices/bus/electron/m2105.h
Normal file
@ -0,0 +1,55 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:Nigel Barnes
|
||||
/**********************************************************************
|
||||
|
||||
BT Merlin M2105
|
||||
|
||||
**********************************************************************/
|
||||
|
||||
|
||||
#ifndef __ELECTRON_M2105__
|
||||
#define __ELECTRON_M2105__
|
||||
|
||||
#include "emu.h"
|
||||
#include "exp.h"
|
||||
#include "machine/6522via.h"
|
||||
#include "machine/mc68681.h"
|
||||
#include "sound/tms5220.h"
|
||||
#include "bus/centronics/ctronics.h"
|
||||
#include "bus/rs232/rs232.h"
|
||||
|
||||
//**************************************************************************
|
||||
// TYPE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
class electron_m2105_device:
|
||||
public device_t,
|
||||
public device_electron_expansion_interface
|
||||
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
electron_m2105_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
|
||||
|
||||
// optional information overrides
|
||||
virtual machine_config_constructor device_mconfig_additions() const override;
|
||||
virtual const rom_entry *device_rom_region() const override;
|
||||
|
||||
protected:
|
||||
virtual void device_start() override;
|
||||
virtual void device_reset() override;
|
||||
|
||||
private:
|
||||
required_memory_region m_exp_rom;
|
||||
required_device<via6522_device> m_via6522_0;
|
||||
required_device<via6522_device> m_via6522_1;
|
||||
required_device<tms5220_device> m_tms;
|
||||
required_device<centronics_device> m_centronics;
|
||||
};
|
||||
|
||||
|
||||
// device type definition
|
||||
extern const device_type ELECTRON_M2105;
|
||||
|
||||
|
||||
#endif /* __ELECTRON_M2105__ */
|
||||
@ -54,7 +54,6 @@ that can be done through BASIC programs seem to behave properly (most of the tim
|
||||
|
||||
Incomplete:
|
||||
- Sound (sound is too high?)
|
||||
- Graphics (seems to be wrong for several games)
|
||||
- 1 MHz bus is not emulated
|
||||
- Bus claiming by ULA is not implemented
|
||||
- Currently the cartridge support always loads the upper rom in page 12
|
||||
@ -223,12 +222,28 @@ static MACHINE_CONFIG_START( electron, electron_state )
|
||||
MCFG_GENERIC_CARTSLOT_ADD("cartslot", generic_plain_slot, "electron_cart")
|
||||
MCFG_GENERIC_LOAD(electron_state, electron_cart)
|
||||
|
||||
/* expansion ports */
|
||||
/* expansion port */
|
||||
MCFG_ELECTRON_EXPANSION_SLOT_ADD("exp", electron_expansion_devices, nullptr)
|
||||
MCFG_ELECTRON_EXPANSION_SLOT_IRQ_HANDLER(INPUTLINE("maincpu", M6502_IRQ_LINE))
|
||||
MCFG_ELECTRON_EXPANSION_SLOT_NMI_HANDLER(INPUTLINE("maincpu", M6502_NMI_LINE))
|
||||
MCFG_ELECTRON_EXPANSION_SLOT_RES_HANDLER(INPUTLINE("maincpu", INPUT_LINE_RESET))
|
||||
|
||||
/* software lists */
|
||||
MCFG_SOFTWARE_LIST_ADD("cass_list","electron_cass")
|
||||
MCFG_SOFTWARE_LIST_ADD("cart_list","electron_cart")
|
||||
MCFG_SOFTWARE_LIST_ADD("cass_list", "electron_cass")
|
||||
MCFG_SOFTWARE_LIST_ADD("cart_list", "electron_cart")
|
||||
MACHINE_CONFIG_END
|
||||
|
||||
|
||||
static MACHINE_CONFIG_DERIVED( btm2105, electron )
|
||||
MCFG_SCREEN_MODIFY("screen")
|
||||
MCFG_SCREEN_COLOR(rgb_t::amber)
|
||||
|
||||
/* expansion port */
|
||||
MCFG_DEVICE_MODIFY("exp")
|
||||
MCFG_DEVICE_SLOT_INTERFACE(electron_expansion_devices, "m2105", true)
|
||||
|
||||
/* software lists */
|
||||
MCFG_SOFTWARE_LIST_REMOVE("cass_list")
|
||||
MACHINE_CONFIG_END
|
||||
|
||||
|
||||
@ -236,27 +251,31 @@ MACHINE_CONFIG_END
|
||||
ROM_START(electron)
|
||||
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
|
||||
ROM_REGION( 0x44000, "user1", 0 ) /* OS Rom */
|
||||
ROM_LOAD( "os.rom", 0x40000, 0x4000, CRC(bf63fb1f) SHA1(a48b8fa0cfb09140e808ac8a187316c605a0b32e) ) /* Os rom */
|
||||
/* 00000 0 available for cartridges */
|
||||
/* 04000 1 available for cartridges */
|
||||
/* 08000 2 available for cartridges */
|
||||
/* 0c000 3 available for cartridges */
|
||||
/* 10000 4 available for cartridges */
|
||||
/* 14000 5 available for cartridges */
|
||||
/* 18000 6 available for cartridges */
|
||||
/* 1c000 7 available for cartridges */
|
||||
/* 20000 8 keyboard */
|
||||
/* 24000 9 keyboard mirror */
|
||||
/* 28000 10 Basic rom */
|
||||
ROM_LOAD( "basic.rom", 0x28000, 0x4000, CRC(79434781) SHA1(4a7393f3a45ea309f744441c16723e2ef447a281) )
|
||||
/* 2c000 11 Basic rom mirror */
|
||||
ROM_COPY( "user1", 0x28000, 0x2c000, 0x4000 )
|
||||
/* 30000 12 available for cartridges with a language ROM */
|
||||
/* 34000 13 available for cartridges with a language ROM */
|
||||
/* 38000 14 available for cartridges with a language ROM */
|
||||
/* 3c000 15 available for cartridges with a language ROM */
|
||||
ROM_LOAD( "os.rom", 0x40000, 0x4000, CRC(bf63fb1f) SHA1(a48b8fa0cfb09140e808ac8a187316c605a0b32e) ) /* OS rom */
|
||||
/* 00000 0 Second external socket on the expansion module (SK2) */
|
||||
/* 04000 1 Second external socket on the expansion module (SK2) */
|
||||
/* 08000 2 First external socket on the expansion module (SK1) */
|
||||
/* 0c000 3 First external socket on the expansion module (SK1) */
|
||||
/* 10000 4 Disc */
|
||||
/* 14000 5 USER applications */
|
||||
/* 18000 6 USER applications */
|
||||
/* 1c000 7 Modem interface ROM */
|
||||
/* 20000 8 Keyboard */
|
||||
/* 24000 9 Keyboard mirror */
|
||||
/* 28000 10 BASIC rom */
|
||||
/* 2c000 11 BASIC rom mirror */
|
||||
/* 30000 12 Expansion module operating system */
|
||||
/* 34000 13 High priority slot in expansion module */
|
||||
/* 38000 14 ECONET */
|
||||
/* 3c000 15 Reserved */
|
||||
ROM_LOAD("basic.rom", 0x28000, 0x4000, CRC(79434781) SHA1(4a7393f3a45ea309f744441c16723e2ef447a281))
|
||||
ROM_COPY("user1", 0x28000, 0x2c000, 0x4000)
|
||||
ROM_END
|
||||
|
||||
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME */
|
||||
COMP ( 1983, electron, 0, 0, electron, electron, driver_device, 0, "Acorn", "Acorn Electron", MACHINE_IMPERFECT_SOUND | MACHINE_IMPERFECT_GRAPHICS )
|
||||
//COMP ( 1985, btm2501, electron, 0, electron, electron, driver_device, 0, "British Telecom Business Systems", "Merlin M2501", MACHINE_NOT_WORKING )
|
||||
|
||||
#define rom_btm2105 rom_electron
|
||||
|
||||
|
||||
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
|
||||
COMP ( 1983, electron, 0, 0, electron, electron, driver_device, 0, "Acorn", "Acorn Electron", MACHINE_IMPERFECT_SOUND | MACHINE_IMPERFECT_GRAPHICS )
|
||||
COMP ( 1985, btm2105, electron, 0, btm2105, electron, driver_device, 0, "British Telecom Business Systems", "BT Merlin M2105", MACHINE_NOT_WORKING )
|
||||
|
||||
@ -76,6 +76,7 @@ public:
|
||||
m_beeper(*this, "beeper"),
|
||||
m_cart(*this, "cartslot"),
|
||||
m_keybd(*this, "LINE")
|
||||
m_exp(*this, "exp")
|
||||
{ }
|
||||
|
||||
ULA m_ula;
|
||||
@ -105,6 +106,7 @@ public:
|
||||
required_device<beep_device> m_beeper;
|
||||
required_device<generic_slot_device> m_cart;
|
||||
required_ioport_array<14> m_keybd;
|
||||
required_device<electron_expansion_slot_device> m_exp;
|
||||
inline UINT8 read_vram( UINT16 addr );
|
||||
inline void electron_plot_pixel(bitmap_ind16 &bitmap, int x, int y, UINT32 color);
|
||||
void electron_interrupt_handler(int mode, int interrupt);
|
||||
|
||||
@ -366,10 +366,37 @@ void electron_state::machine_start()
|
||||
else
|
||||
lo_rom = memregion("user1")->base();
|
||||
|
||||
membank("bank2")->configure_entries(0, 1, lo_rom, 0x4000);
|
||||
membank("bank2")->configure_entries(1, 11, memregion("user1")->base() + 0x04000, 0x4000);
|
||||
membank("bank2")->configure_entries(12, 1, up_rom, 0x4000);
|
||||
membank("bank2")->configure_entries(13, 3, memregion("user1")->base() + 0x34000, 0x4000);
|
||||
membank("bank2")->configure_entries(0, 1, lo_rom, 0x4000);
|
||||
membank("bank2")->configure_entries(1, 1, up_rom, 0x4000);
|
||||
|
||||
for (int page = 2; page < 16; page++)
|
||||
membank("bank2")->configure_entries(page, 1, memregion("user1")->base() + page * 0x4000, 0x4000);
|
||||
|
||||
/* enumerate expansion ROMs */
|
||||
electron_expansion_slot_device* exp_port = m_exp;
|
||||
|
||||
while (exp_port != nullptr)
|
||||
{
|
||||
device_t* temp;
|
||||
|
||||
temp = dynamic_cast<device_t*>(exp_port->get_card_device());
|
||||
if (temp != nullptr)
|
||||
{
|
||||
for (int page = 4; page < 16; page++)
|
||||
{
|
||||
memory_region *temp_region = temp->memregion("exp_rom");
|
||||
if (temp_region != nullptr && temp_region->base() != nullptr && temp_region->base()[page * 0x4000 + 0x06] != 0x00)
|
||||
{
|
||||
membank("bank2")->configure_entries(page, 1, temp_region->base() + page * 0x4000, 0x4000);
|
||||
}
|
||||
exp_port = temp->subdevice<electron_expansion_slot_device>("exp");
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
exp_port = nullptr;
|
||||
}
|
||||
}
|
||||
|
||||
m_ula.interrupt_status = 0x82;
|
||||
m_ula.interrupt_control = 0x00;
|
||||
|
||||
@ -11741,6 +11741,7 @@ avenger // (c) 1975 Electra
|
||||
|
||||
@source:electron.cpp
|
||||
electron // 1983 Acorn Electron
|
||||
btm2105 // 1985 BT Merlin M2105
|
||||
|
||||
@source:elekscmp.cpp
|
||||
elekscmp //
|
||||
|
||||
Loading…
Reference in New Issue
Block a user