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intellec4: add high-speed paper tape reader card (installed in slot j7 by default, select with J command for loading BNPF/HEX)

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This commit is contained in:
Vas Crabb 2017-07-13 03:28:04 +10:00
parent 080f48d522
commit f1b30abacf
5 changed files with 139 additions and 6 deletions
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2
scripts/src/bus.lua
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@ -869,6 +869,8 @@ if (BUSES["INTELLEC4"]~=null) then
files {
MAME_DIR .. "src/devices/bus/intellec4/intellec4.cpp",
MAME_DIR .. "src/devices/bus/intellec4/intellec4.h",
MAME_DIR .. "src/devices/bus/intellec4/tapereader.cpp",
MAME_DIR .. "src/devices/bus/intellec4/tapereader.h",
}
end

3
src/devices/bus/intellec4/intellec4.cpp
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@ -248,5 +248,8 @@ void device_univ_card_interface::set_bus(univ_bus_device &bus)
#include "tapereader.h"
SLOT_INTERFACE_START(intellec4_univ_cards)
SLOT_INTERFACE("ptreader", INTELLEC4_TAPE_READER)
SLOT_INTERFACE_END

70
src/devices/bus/intellec4/tapereader.cpp Normal file
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@ -0,0 +1,70 @@
// license:BSD-3-Clause
// copyright-holders:Vas Crabb
#include "emu.h"
#include "tapereader.h"
DEFINE_DEVICE_TYPE_NS(INTELLEC4_TAPE_READER, bus::intellec4, tape_reader_device, "intlc4ptr", "INTELLEC 4 paper tape reader")
namespace bus { namespace intellec4 {
tape_reader_device::tape_reader_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock)
: device_t(mconfig, INTELLEC4_TAPE_READER, tag, owner, clock)
, device_univ_card_interface(mconfig, *this)
, device_image_interface(mconfig, *this)
, m_data(0xffU)
, m_ready(false)
, m_advance(false)
{
}
image_init_result tape_reader_device::call_load()
{
m_data = 0x00U;
m_ready = false;
return image_init_result::PASS;
}
void tape_reader_device::call_unload()
{
m_data = 0xffU;
m_ready = false;
}
void tape_reader_device::device_start()
{
save_item(NAME(m_data));
save_item(NAME(m_ready));
save_item(NAME(m_advance));
rom_ports_space().install_read_handler(0x0040U, 0x004fU, read8_delegate(FUNC(tape_reader_device::rom4_in), this));
rom_ports_space().install_read_handler(0x0060U, 0x006fU, read8_delegate(FUNC(tape_reader_device::rom6_in), this));
rom_ports_space().install_read_handler(0x0070U, 0x007fU, read8_delegate(FUNC(tape_reader_device::rom7_in), this));
rom_ports_space().install_write_handler(0x0040U, 0x004fU, write8_delegate(FUNC(tape_reader_device::rom4_out), this));
}
DECLARE_WRITE_LINE_MEMBER(tape_reader_device::advance)
{
// this is edge-sensitive - CPU sends the narrowest pulse it can
if (!m_advance && !bool(state))
{
// FIXME: it probably shouldn't be quite this fast
if (is_loaded() && fread(&m_data, 1U))
{
m_ready = true;
}
else
{
m_data = 0xffU;
m_ready = false;
}
}
m_advance = !bool(state);
}
} } // namespace bus::intellec4

54
src/devices/bus/intellec4/tapereader.h Normal file
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@ -0,0 +1,54 @@
// license:BSD-3-Clause
// copyright-holders:Vas Crabb
/*
High-speed paper tape reader
The monitor PROM has support for loading BNPF or Intel HEX from this
device (use J command to select it), but it doesn't appear in any
catalogues or manuals I've seen.
*/
#ifndef MAME_BUS_INTELLEC4_TAPEREADER_H
#define MAME_BUS_INTELLEC4_TAPEREADER_H
#pragma once
#include "intellec4.h"
namespace bus { namespace intellec4 {
class tape_reader_device : public device_t, public device_univ_card_interface, public device_image_interface
{
public:
tape_reader_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock);
virtual image_init_result call_load() override;
virtual void call_unload() override;
virtual iodevice_t image_type() const override { return IO_PUNCHTAPE; }
virtual bool is_readable() const override { return true; }
virtual bool is_writeable() const override { return false; }
virtual bool is_creatable() const override { return false; }
virtual bool must_be_loaded() const override { return false; }
virtual bool is_reset_on_load() const override { return false; }
virtual char const *file_extensions() const override { return "bnpf,hex,lst,txt"; }
protected:
virtual void device_start() override;
private:
DECLARE_READ8_MEMBER(rom4_in) { return m_ready ? 0x07U : 0x0fU; }
DECLARE_READ8_MEMBER(rom6_in) { return ~m_data & 0x0fU; }
DECLARE_READ8_MEMBER(rom7_in) { return (~m_data >> 4) & 0x0fU; }
DECLARE_WRITE8_MEMBER(rom4_out) { advance(BIT(data, 3)); }
DECLARE_WRITE_LINE_MEMBER(advance);
u8 m_data;
bool m_ready;
bool m_advance;
};
} } // namespace bus::intellec4
DECLARE_DEVICE_TYPE_NS(INTELLEC4_TAPE_READER, bus::intellec4, tape_reader_device)
#endif // MAME_BUS_INTELLEC4_TAPEREADER_H

16
src/mame/drivers/intellec4.cpp
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@ -39,7 +39,6 @@
TODO:
* Default terminal serial settings
* Universal slot cards
* Image device for paper tape reader?
* Expose general-purpose I/O?
*/
#include "emu.h"
@ -232,7 +231,7 @@ ADDRESS_MAP_START(intellec4_program_banks, mcs40_cpu_device_base::AS_ROM, 8, int
ADDRESS_MAP_END
ADDRESS_MAP_START(intellec4_rom_port_banks, mcs40_cpu_device_base::AS_ROM_PORTS, 8, intellec4_state)
ADDRESS_MAP_UNMAP_LOW
ADDRESS_MAP_UNMAP_HIGH
// 0x0000...0x07ff MON
AM_RANGE(0x0000, 0x000f) AM_MIRROR(0x1f00) AM_READWRITE(rom0_in, rom0_out)
@ -265,7 +264,7 @@ ADDRESS_MAP_START(intellec4_ram_memory, mcs40_cpu_device_base::AS_RAM_MEMORY, 8,
ADDRESS_MAP_END
ADDRESS_MAP_START(intellec4_rom_ports, mcs40_cpu_device_base::AS_ROM_PORTS, 8, intellec4_state)
ADDRESS_MAP_UNMAP_LOW
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x07ff) AM_DEVICE("rpbank", address_map_bank_device, amap8)
ADDRESS_MAP_END
@ -316,7 +315,7 @@ MACHINE_CONFIG_START(intellec4)
MCFG_INTELLEC4_UNIV_BUS_RAM_PORTS_SPACE("maincpu", mcs40_cpu_device_base::AS_RAM_PORTS)
MCFG_INTELLEC4_UNIV_BUS_RESET_4002_CB(WRITELINE(intellec4_state, bus_reset_4002))
MCFG_INTELLEC4_UNIV_BUS_USER_RESET_CB(WRITELINE(intellec4_state, bus_user_reset))
MCFG_INTELLEC4_UNIV_SLOT_ADD("bus", "j7", 518000. / 7, intellec4_univ_cards, nullptr)
MCFG_INTELLEC4_UNIV_SLOT_ADD("bus", "j7", 518000. / 7, intellec4_univ_cards, "ptreader")
MCFG_INTELLEC4_UNIV_SLOT_ADD("bus", "j8", 518000. / 7, intellec4_univ_cards, nullptr)
MCFG_INTELLEC4_UNIV_SLOT_ADD("bus", "j9", 518000. / 7, intellec4_univ_cards, nullptr)
MCFG_INTELLEC4_UNIV_SLOT_ADD("bus", "j10", 518000. / 7, intellec4_univ_cards, nullptr)
@ -500,7 +499,7 @@ WRITE8_MEMBER(intellec4_state::pm_write)
READ8_MEMBER(intellec4_state::rom0_in)
{
// bit 0 of this port is ANDed with the TTY input
return m_tty->rxd_r() ? 0x00U : 0x01U;
return m_tty->rxd_r() ? 0x0eU : 0x0fU;
}
READ8_MEMBER(intellec4_state::rom2_in)
@ -1045,7 +1044,7 @@ private:
// current state of signals from bus
bool m_bus_test = false;
// current state of front panel switches
// current state of front panel switches
bool m_sw_hold = false;
};
@ -1443,6 +1442,11 @@ ROM_END
} // anonymous namespace
/***********************************************************************
Machine definitions
***********************************************************************/
// YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS
COMP( 1973?, intlc44, 0, 0, mod4, mod4, mod4_state, 0, "Intel", "INTELLEC 4/MOD 4", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW | MACHINE_CLICKABLE_ARTWORK | MACHINE_SUPPORTS_SAVE )
COMP( 1974?, intlc440, 0, 0, mod40, mod40, mod40_state, 0, "Intel", "INTELLEC 4/MOD 40", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW | MACHINE_CLICKABLE_ARTWORK | MACHINE_SUPPORTS_SAVE )