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-rw-r--r--src/mame/drivers/mcb216.c161
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diff --git a/src/mame/drivers/mcb216.c b/src/mame/drivers/mcb216.c
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+// license:BSD-3-Clause
+// copyright-holders:Robbbert
+/***************************************************************************
+
+ 2013-12-01 Driver for Cromemco MCB-216 SCC (Single Card Computer),
+ and also the earlier CB-308.
+
+ The driver is working, just missing some hardware info (see ToDo).
+
+ TODO:
+ - Find out cpu clock speed
+ - Find out what UART type is used
+
+ Memory allocation
+ - 0000 to 0FFF - standard roms
+ - 1000 to 1FFF - optional roms or ram (expect roms)
+ - 2000 to 23FF - standard ram
+ - 2400 to FFFF - optional whatever the user wants (expect ram)
+
+ MCB-216:
+ Press Enter twice. You will see the Basic OK prompt. To get into the
+ monitor, use the QUIT command, and to return use the B command.
+
+ The mcb216 can use an optional floppy-disk-drive unit. The only other
+ storage is paper-tape, which is expected to be attached to the terminal.
+
+ CB-308:
+ Press Enter twice. You will see the Monitor logo. To get into the BASIC,
+ enter GE400. To return to the monitor, use the QUIT command followed by
+ pressing Enter twice. All monitor commands must be in uppercase. The
+ only storage is paper-tape.
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "machine/terminal.h"
+
+#define TERMINAL_TAG "terminal"
+
+class mcb216_state : public driver_device
+{
+public:
+ mcb216_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_terminal(*this, TERMINAL_TAG)
+ {
+ }
+
+ DECLARE_WRITE8_MEMBER(kbd_put);
+ DECLARE_READ8_MEMBER(keyin_r);
+ DECLARE_READ8_MEMBER(status_r);
+ DECLARE_MACHINE_RESET(mcb216);
+ DECLARE_MACHINE_RESET(cb308);
+
+private:
+ UINT8 m_term_data;
+ required_device<cpu_device> m_maincpu;
+ required_device<generic_terminal_device> m_terminal;
+};
+
+static ADDRESS_MAP_START(mcb216_mem, AS_PROGRAM, 8, mcb216_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x0fff) AM_ROM AM_REGION("roms", 0)
+ AM_RANGE(0x2000, 0x23ff) AM_RAM
+ AM_RANGE(0x2400, 0xffff) AM_RAM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(mcb216_io, AS_IO, 8, mcb216_state)
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ AM_RANGE(0x00, 0x00) AM_READ(status_r)
+ AM_RANGE(0x01, 0x01) AM_READ(keyin_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(cb308_mem, AS_PROGRAM, 8, mcb216_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x1fff) AM_RAM
+ AM_RANGE(0xe000, 0xefff) AM_ROM AM_REGION("roms", 0)
+ADDRESS_MAP_END
+
+
+/* Input ports */
+static INPUT_PORTS_START( mcb216 )
+INPUT_PORTS_END
+
+
+READ8_MEMBER( mcb216_state::keyin_r )
+{
+ UINT8 ret = m_term_data;
+ m_term_data = 0;
+ return ret;
+}
+
+// 0x40 - a keystroke is available
+// 0x80 - ok to send to terminal
+READ8_MEMBER( mcb216_state::status_r )
+{
+ return (m_term_data) ? 0xc0 : 0x80;
+}
+
+WRITE8_MEMBER( mcb216_state::kbd_put )
+{
+ m_term_data = data;
+}
+
+MACHINE_RESET_MEMBER( mcb216_state, mcb216 )
+{
+ m_term_data = 0;
+}
+
+MACHINE_RESET_MEMBER( mcb216_state, cb308 )
+{
+ m_term_data = 0;
+ m_maincpu->set_state_int(Z80_PC, 0xe000);
+}
+
+static MACHINE_CONFIG_START( mcb216, mcb216_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", Z80, 4000000)
+ MCFG_CPU_PROGRAM_MAP(mcb216_mem)
+ MCFG_CPU_IO_MAP(mcb216_io)
+ MCFG_MACHINE_RESET_OVERRIDE(mcb216_state, mcb216)
+
+ /* video hardware */
+ MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0)
+ MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(mcb216_state, kbd_put))
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_START( cb308, mcb216_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", Z80, 4000000)
+ MCFG_CPU_PROGRAM_MAP(cb308_mem)
+ MCFG_CPU_IO_MAP(mcb216_io)
+ MCFG_MACHINE_RESET_OVERRIDE(mcb216_state, cb308)
+
+ /* video hardware */
+ MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0)
+ MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(mcb216_state, kbd_put))
+MACHINE_CONFIG_END
+
+/* ROM definition */
+ROM_START( mcb216 )
+ ROM_REGION(0x1000, "roms", 0)
+ ROM_LOAD( "mcb216r0", 0x0000, 0x0800, CRC(86d20cea) SHA1(9fb8fdbcb8d31bd3304a0b3339c7f423188e9d37) )
+ ROM_LOAD( "mcb216r1", 0x0800, 0x0800, CRC(68a25b2c) SHA1(3eadd4a5d65726f767742deb4b51a97df813f37d) )
+ROM_END
+
+ROM_START( cb308 )
+ ROM_REGION(0x1000, "roms", 0)
+ ROM_LOAD( "cb308r0", 0x0000, 0x0400, CRC(62f50531) SHA1(3071e2ab7fc6b2ca889e4fb5cf7cc9ee8fbe53d3) )
+ ROM_LOAD( "cb308r1", 0x0400, 0x0400, CRC(03191ac1) SHA1(84665dfc797c9f51bb659291b18399986ed846fb) )
+ ROM_LOAD( "cb308r2", 0x0800, 0x0400, CRC(695ea521) SHA1(efe36a712e2a038ee804e556c5ebe05443cf798e) )
+ ROM_LOAD( "cb308r3", 0x0c00, 0x0400, CRC(e3e4a778) SHA1(a7c14458f8636d860ae25b10387fa6f7f2ef6ef9) )
+ROM_END
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
+COMP( 1979, mcb216, 0, 0, mcb216, mcb216, driver_device, 0, "Cromemco", "MCB-216", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )
+COMP( 1977, cb308, mcb216, 0, cb308, mcb216, driver_device, 0, "Cromemco", "CB-308", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )