diff options
Diffstat (limited to 'src/mame/drivers/d6809.cpp')
-rw-r--r-- | src/mame/drivers/d6809.cpp | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/src/mame/drivers/d6809.cpp b/src/mame/drivers/d6809.cpp deleted file mode 100644 index acb5a161501..00000000000 --- a/src/mame/drivers/d6809.cpp +++ /dev/null @@ -1,226 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Robbbert -/******************************************************************************* - -Dunfield 6809 Portable - -2009-05-12 Skeleton driver. -2011-09-21 connected to terminal, notes added [Robbbert] - -Chips used (planned?): -- 6809E CPU -- 6845 CRTC -- 6840 CTC -- 6551 ACIA Console -- 6551 ACIA Aux -- 6850 ACIA Unknown purpose -- uPD765 FDC -- 2764 8K ROM for CPU -- 2732 4K ROM for Chargen (not dumped) -- 6x 6264 RAM -- 3x 5516 RAM -- XTALs: 14.745MHz, 16MHz - -So much for the official documentation. - -In practice, it reads/writes to a terminal, and doesn't use most of the other -devices. - -'maincpu' (F9DD): unmapped program memory write to 00F0 = 05 & FF -'maincpu' (F9E3): unmapped program memory read from 0001 & FF <----- these 2 are CLR 0001 -'maincpu' (F9E3): unmapped program memory write to 0001 = 00 & FF -'maincpu' (F9E6): unmapped program memory read from 0005 & FF <----- these 2 are CLR 0005 -'maincpu' (F9E6): unmapped program memory write to 0005 = 00 & FF -'maincpu' (F9E9): unmapped program memory write to 0002 = 0B & FF <-- these 2 are STD 0002 -'maincpu' (F9E9): unmapped program memory write to 0003 = 1E & FF -'maincpu' (F9EC): unmapped program memory write to 0006 = 0B & FF <-- these 2 are STD 0006 -'maincpu' (F9EC): unmapped program memory write to 0007 = 1E & FF -'maincpu' (FA4D): unmapped program memory write to 00F2 = 00 & FF <-- the remainder seems to be disk related -'maincpu' (FA52): unmapped program memory write to 00F3 = 00 & FF -'maincpu' (FA57): unmapped program memory write to 00F4 = 00 & FF -'maincpu' (FA5C): unmapped program memory write to 00F5 = 00 & FF -'maincpu' (FA61): unmapped program memory write to 00F6 = 02 & FF -'maincpu' (FA66): unmapped program memory write to 00F7 = 09 & FF -'maincpu' (FA6B): unmapped program memory write to 00F0 = 01 & FF -'maincpu' (FA6E): unmapped program memory read from 00F0 & FF -'maincpu' (FA4D): unmapped program memory write to 00F2 = 00 & FF -'maincpu' (FA52): unmapped program memory write to 00F3 = 00 & FF -'maincpu' (FA57): unmapped program memory write to 00F4 = 00 & FF -'maincpu' (FA5C): unmapped program memory write to 00F5 = 00 & FF -'maincpu' (FA61): unmapped program memory write to 00F6 = 02 & FF -'maincpu' (FA66): unmapped program memory write to 00F7 = 09 & FF -'maincpu' (FA6B): unmapped program memory write to 00F0 = 01 & FF -'maincpu' (FA6E): unmapped program memory read from 00F0 & FF -'maincpu' (FA4D): unmapped program memory write to 00F2 = 00 & FF -'maincpu' (FA52): unmapped program memory write to 00F3 = 00 & FF -'maincpu' (FA57): unmapped program memory write to 00F4 = 00 & FF -'maincpu' (FA5C): unmapped program memory write to 00F5 = 00 & FF -'maincpu' (FA61): unmapped program memory write to 00F6 = 02 & FF -'maincpu' (FA66): unmapped program memory write to 00F7 = 09 & FF -'maincpu' (FA6B): unmapped program memory write to 00F0 = 01 & FF -'maincpu' (FA6E): unmapped program memory read from 00F0 & FF -'maincpu' (FA41): unmapped program memory write to 00F2 = 00 & FF -'maincpu' (FA46): unmapped program memory write to 00F0 = 04 & FF -'maincpu' (FA82): unmapped program memory read from 00F0 & FF -'maincpu' (FA4D): unmapped program memory write to 00F2 = 00 & FF -'maincpu' (FA52): unmapped program memory write to 00F3 = 00 & FF -'maincpu' (FA57): unmapped program memory write to 00F4 = 00 & FF -'maincpu' (FA5C): unmapped program memory write to 00F5 = 00 & FF -'maincpu' (FA61): unmapped program memory write to 00F6 = 02 & FF -'maincpu' (FA66): unmapped program memory write to 00F7 = 09 & FF -'maincpu' (FA6B): unmapped program memory write to 00F0 = 01 & FF -'maincpu' (FA6E): unmapped program memory read from 00F0 & FF -'maincpu' (FA4D): unmapped program memory write to 00F2 = 00 & FF -'maincpu' (FA52): unmapped program memory write to 00F3 = 00 & FF -'maincpu' (FA57): unmapped program memory write to 00F4 = 00 & FF -'maincpu' (FA5C): unmapped program memory write to 00F5 = 00 & FF -'maincpu' (FA61): unmapped program memory write to 00F6 = 02 & FF -'maincpu' (FA66): unmapped program memory write to 00F7 = 09 & FF -'maincpu' (FA6B): unmapped program memory write to 00F0 = 01 & FF -'maincpu' (FA6E): unmapped program memory read from 00F0 & FF <-- now it gives up & prints an error - - -Layout of devices differences: - Schematic Actual -6551 1 0000 0000 -6551 2 0100 0004 -Disk status 0400 00F0 -Disk commands 0401 00F0-00F7 -Parallel terminal not there 00FF -CE on UPD765 0400 0200 -TC on UPD765 0500 0300 - -Also, pins 16,17,18 on the UPD765 are incorrect in the schematic. - - -ToDo: -- Need better documentation -- Need a boot disk image - -**********************************************************************************/ - -#include "emu.h" -#include "cpu/m6809/m6809.h" -#include "imagedev/floppy.h" -#include "machine/mos6551.h" -#include "machine/upd765.h" -#include "machine/terminal.h" - - -class d6809_state : public driver_device -{ -public: - d6809_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag) - , m_maincpu(*this, "maincpu") - , m_terminal(*this, "terminal") - , m_fdc(*this, "fdc") - , m_floppy0(*this, "fdc:0") - { } - - void d6809(machine_config &config); - -private: - u8 term_r(); - void term_w(u8 data); - void kbd_put(u8 data); - - void mem_map(address_map &map); - - u8 m_term_data; - void machine_start() override; - void machine_reset() override; - required_device<cpu_device> m_maincpu; - required_device<generic_terminal_device> m_terminal; - required_device<upd765a_device> m_fdc; - required_device<floppy_connector> m_floppy0; -}; - -u8 d6809_state::term_r() -{ - u8 ret = m_term_data; - m_term_data = 0; - return ret; -} - -void d6809_state::term_w(u8 data) -{ - if ((data > 0) && (data < 0x80)) - m_terminal->write(data); -} - -void d6809_state::mem_map(address_map &map) -{ - map.unmap_value_high(); - // 00-FF is for various devices. - map(0x0000, 0x0003).rw("acia1", FUNC(mos6551_device::read), FUNC(mos6551_device::write)); - map(0x0004, 0x0007).rw("acia2", FUNC(mos6551_device::read), FUNC(mos6551_device::write)); - map(0x00f0, 0x00f7).ram(); // for now - //map(0x00f0, 0x00f0).r(m_fdc, FUNC(upd765a_device::msr_r)); - map(0x00ff, 0x00ff).rw(FUNC(d6809_state::term_r), FUNC(d6809_state::term_w)); - map(0x0200, 0x0201).mirror(0xfe).m(m_fdc, FUNC(upd765a_device::map)); - map(0x0300, 0x0300).mirror(0xff).lw8(NAME([this] (u8 data){ m_fdc->tc_w(1); m_fdc->tc_w(0); })); - map(0x1000, 0xdfff).ram(); - map(0xe000, 0xffff).rom().region("roms", 0); -} - - -/* Input ports */ -static INPUT_PORTS_START( d6809 ) -INPUT_PORTS_END - - -void d6809_state::kbd_put(u8 data) -{ - m_term_data = data; -} - -void d6809_state::machine_start() -{ - save_item(NAME(m_term_data)); -} - -void d6809_state::machine_reset() -{ - m_fdc->set_ready_line_connected(1); - m_fdc->set_unscaled_clock(8_MHz_XTAL / 2); // 4MHz for minifloppy - floppy_image_device *floppy = m_floppy0->get_device(); - m_fdc->set_floppy(floppy); - floppy->mon_w(0); -} - -static void floppies(device_slot_interface &device) -{ - device.option_add("525qd", FLOPPY_525_QD); -} - - -void d6809_state::d6809(machine_config &config) -{ - /* basic machine hardware */ - MC6809E(config, m_maincpu, XTAL(14'745'600) / 8); // MC68B09EP - m_maincpu->set_addrmap(AS_PROGRAM, &d6809_state::mem_map); - - MOS6551(config, "acia1", XTAL(14'745'600) / 8); // uses Q clock - MOS6551(config, "acia2", XTAL(14'745'600) / 8); // uses Q clock - - /* video hardware */ - GENERIC_TERMINAL(config, m_terminal, 0); - m_terminal->set_keyboard_callback(FUNC(d6809_state::kbd_put)); - - // Floppy - UPD765A(config, m_fdc, 8'000'000, true, true); - //m_fdc->drq_wr_callback().set(m_fdc, FUNC(upd765a_device::dack_w)); // pin not emulated - FLOPPY_CONNECTOR(config, "fdc:0", floppies, "525qd", floppy_image_device::default_mfm_floppy_formats).enable_sound(true); -} - -/* ROM definition */ -ROM_START( d6809 ) - ROM_REGION( 0x2000, "roms", 0 ) - ROM_LOAD( "d6809.rom", 0x0000, 0x2000, CRC(2ceb40b8) SHA1(780111541234b4f0f781a118d955df61daa56e7e)) -ROM_END - -/* Driver */ - -// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS -COMP( 1983, d6809, 0, 0, d6809, d6809, d6809_state, empty_init, "Dunfield", "6809 Portable", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE ) |