summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/chaos.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/mame/drivers/chaos.cpp')
-rw-r--r--src/mame/drivers/chaos.cpp191
1 files changed, 0 insertions, 191 deletions
diff --git a/src/mame/drivers/chaos.cpp b/src/mame/drivers/chaos.cpp
deleted file mode 100644
index 4b8f58c1752..00000000000
--- a/src/mame/drivers/chaos.cpp
+++ /dev/null
@@ -1,191 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Miodrag Milanovic, Robbbert
-/***************************************************************************
-
- Chaos2
-
- 2010-04-08 Skeleton driver.
- 2012-05-19 Connected to a terminal, system is usable [Robbbert]
-
- This is a homebrew system: http://koo.corpus.cam.ac.uk/chaos/
-
- There are no schematics or manuals, so the results might not be
- totally accurate.
-
- With the DOS config switch turned off, the only accepted input
- is a line starting with '&'. The actual commands are unknown.
-
- With DOS enabled, a large number of commands become available.
- These are:
- access, ask, ascdis, bpclr, bpset, close, control, copy, devfive, dir,
- end, exec, execute, fill, find, goto, if, input, let, list, load, lowercase,
- memdis, memset, open, port, read, reboot, runhex, run, save, type, typesl,
- verify.
- An example is: memdis 0 8 (memory dump starting at 0, show 8 lines)
- Don't try 'fill' - it fills all memory with zeroes, crashing the system.
-
- ToDo:
- - Connect up floppy disk (WD1771 fdc, 5.25", single density,
- no other info available)
-
-****************************************************************************/
-
-#include "emu.h"
-#include "cpu/s2650/s2650.h"
-#include "machine/terminal.h"
-
-
-namespace {
-
-class chaos_state : public driver_device
-{
-public:
- chaos_state(const machine_config &mconfig, device_type type, const char *tag)
- : driver_device(mconfig, type, tag)
- , m_terminal(*this, "terminal")
- , m_p_ram(*this, "ram")
- , m_maincpu(*this, "maincpu")
- { }
-
- void chaos(machine_config &config);
-
-protected:
- virtual void machine_reset() override;
- virtual void machine_start() override;
-
-private:
- u8 port1e_r();
- void port1f_w(u8 data);
- u8 port90_r();
- u8 port91_r();
- void kbd_put(u8 data);
- void data_map(address_map &map);
- void io_map(address_map &map);
- void mem_map(address_map &map);
- u8 m_term_data;
- required_device<generic_terminal_device> m_terminal;
- required_shared_ptr<u8> m_p_ram;
- required_device<cpu_device> m_maincpu;
-};
-
-
-void chaos_state::mem_map(address_map &map)
-{
- map.unmap_value_high();
- map(0x0000, 0x7fff).ram().share("ram");
-}
-
-void chaos_state::io_map(address_map &map)
-{
- map.unmap_value_high();
- map(0x1e, 0x1e).r(FUNC(chaos_state::port1e_r));
- map(0x1f, 0x1f).rw(FUNC(chaos_state::port90_r), FUNC(chaos_state::port1f_w));
- map(0x90, 0x90).r(FUNC(chaos_state::port90_r));
- map(0x91, 0x91).r(FUNC(chaos_state::port91_r));
- map(0x92, 0x92).w(m_terminal, FUNC(generic_terminal_device::write));
-}
-
-void chaos_state::data_map(address_map &map)
-{
- map(S2650_DATA_PORT, S2650_DATA_PORT).noprw(); // stops error log filling up while using debug
-}
-
-/* Input ports */
-static INPUT_PORTS_START( chaos )
- PORT_START("CONFIG")
- PORT_CONFNAME( 0x01, 0x00, "Enable DOS")
- PORT_CONFSETTING( 0x01, DEF_STR(No))
- PORT_CONFSETTING( 0x00, DEF_STR(Yes))
-INPUT_PORTS_END
-
-
-// Port 1E - Bit 0 indicates key pressed, Bit 1 indicates ok to output
-
-u8 chaos_state::port1e_r()
-{
- return (m_term_data) ? 1 : 0;
-}
-
-void chaos_state::port1f_w(u8 data)
-{
- // make the output readable on our terminal
- if (data == 0x09)
- return;
- else
- if (!data)
- data = 0x24;
-
- m_terminal->write(data);
-
- if (data == 0x0d)
- m_terminal->write(0x0a);
-}
-
-u8 chaos_state::port90_r()
-{
- u8 ret = m_term_data;
- m_term_data = 0;
- return ret;
-}
-
-// Status port
-// Bit 0 = L use ports 1E & 1F; H use ports 90 & 92
-// Bit 3 = key pressed
-// Bit 7 = ok to output
-
-u8 chaos_state::port91_r()
-{
- u8 ret = 0x80 | ioport("CONFIG")->read();
- ret |= (m_term_data) ? 8 : 0;
- return ret;
-}
-
-void chaos_state::kbd_put(u8 data)
-{
- m_term_data = data;
-}
-
-void chaos_state::machine_start()
-{
- save_item(NAME(m_term_data));
-
- m_term_data = 0;
-}
-
-void chaos_state::machine_reset()
-{
- // copy the roms into ram
- u8* ROM = memregion("roms")->base();
- memcpy(m_p_ram, ROM, 0x3000);
- memcpy(m_p_ram+0x7000, ROM+0x3000, 0x1000);
-}
-
-void chaos_state::chaos(machine_config &config)
-{
- /* basic machine hardware */
- S2650(config, m_maincpu, XTAL(1'000'000));
- m_maincpu->set_addrmap(AS_PROGRAM, &chaos_state::mem_map);
- m_maincpu->set_addrmap(AS_IO, &chaos_state::io_map);
- m_maincpu->set_addrmap(AS_DATA, &chaos_state::data_map);
-
- /* video hardware */
- GENERIC_TERMINAL(config, m_terminal, 0);
- m_terminal->set_keyboard_callback(FUNC(chaos_state::kbd_put));
-}
-
-/* ROM definition */
-ROM_START( chaos )
- ROM_REGION( 0x4000, "roms", 0 )
- ROM_LOAD( "chaos.001", 0x0000, 0x1000, CRC(3b433e72) SHA1(5b487337d71253d0e64e123f405da9eaf20e87ac))
- ROM_LOAD( "chaos.002", 0x1000, 0x1000, CRC(8b0b487f) SHA1(0d167cf3004a81c87446f2f1464e3debfa7284fe))
- ROM_LOAD( "chaos.003", 0x2000, 0x1000, CRC(5880db81) SHA1(29b8f1b03c83953f66464ad1fbbfe2e019637ce1))
- ROM_LOAD( "chaos.004", 0x3000, 0x1000, CRC(5d6839d6) SHA1(237f52f0780ac2e29d57bf06d0f7a982eb523084))
-ROM_END
-
-} // Anonymous namespace
-
-
-/* Driver */
-
-// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
-COMP( 1983, chaos, 0, 0, chaos, chaos, chaos_state, empty_init, "David Greaves", "Chaos 2", MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )