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Diffstat (limited to 'src/mame/drivers/ccs300.c')
-rw-r--r-- | src/mame/drivers/ccs300.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/src/mame/drivers/ccs300.c b/src/mame/drivers/ccs300.c new file mode 100644 index 00000000000..a0842350bd2 --- /dev/null +++ b/src/mame/drivers/ccs300.c @@ -0,0 +1,142 @@ +// license:BSD-3-Clause +// copyright-holders:Robbbert +/*************************************************************************** + + CCS Model 300 + + 2009-12-11 Skeleton driver. + +It requires a floppy disk to boot from. + +There's no info available on this system, however the bankswitching +appears to be the same as their other systems. + +Early on, it does a read from port F2. If bit 3 is low, the system becomes +a Model 400. + +Since IM2 is used, it is assumed there are Z80 peripherals on board. +There's unknown usage of ports 11 thru 1B, 34, and F0 thru F2. + +****************************************************************************/ + +#include "emu.h" +#include "cpu/z80/z80.h" +#include "machine/terminal.h" + +#define TERMINAL_TAG "terminal" + +class ccs300_state : public driver_device +{ +public: + ccs300_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_DRIVER_INIT(ccs300); + DECLARE_MACHINE_RESET(ccs300); + DECLARE_READ8_MEMBER(port10_r); + DECLARE_READ8_MEMBER(port11_r); + DECLARE_WRITE8_MEMBER(port10_w); + DECLARE_WRITE8_MEMBER(port40_w); + DECLARE_WRITE8_MEMBER(kbd_put); +private: + UINT8 m_term_data; + required_device<cpu_device> m_maincpu; + required_device<generic_terminal_device> m_terminal; +}; + +static ADDRESS_MAP_START(ccs300_mem, AS_PROGRAM, 8, ccs300_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x0000, 0x07ff) AM_READ_BANK("bankr0") AM_WRITE_BANK("bankw0") + AM_RANGE(0x0800, 0xffff) AM_RAM +ADDRESS_MAP_END + +static ADDRESS_MAP_START( ccs300_io, AS_IO, 8, ccs300_state) + ADDRESS_MAP_UNMAP_HIGH + ADDRESS_MAP_GLOBAL_MASK(0xff) + AM_RANGE(0x10, 0x10) AM_READWRITE(port10_r,port10_w) + AM_RANGE(0x11, 0x11) AM_READ(port11_r) + AM_RANGE(0x40, 0x40) AM_WRITE(port40_w) +ADDRESS_MAP_END + +/* Input ports */ +static INPUT_PORTS_START( ccs300 ) +INPUT_PORTS_END + +//************************************* +// +// Keyboard +// +//************************************* +READ8_MEMBER( ccs300_state::port10_r ) +{ + UINT8 ret = m_term_data; + m_term_data = 0; + return ret; +} + +READ8_MEMBER( ccs300_state::port11_r ) +{ + return (m_term_data) ? 5 : 4; +} + +WRITE8_MEMBER( ccs300_state::port10_w ) +{ + m_terminal->write(space, 0, data & 0x7f); +} + +WRITE8_MEMBER( ccs300_state::kbd_put ) +{ + m_term_data = data; +} + +//************************************* +// +// Machine +// +//************************************* +WRITE8_MEMBER( ccs300_state::port40_w ) +{ + membank("bankr0")->set_entry( (data) ? 1 : 0); +} + +MACHINE_RESET_MEMBER( ccs300_state, ccs300 ) +{ + membank("bankr0")->set_entry(0); // point at rom + membank("bankw0")->set_entry(0); // always write to ram +} + +DRIVER_INIT_MEMBER( ccs300_state, ccs300 ) +{ + UINT8 *main = memregion("maincpu")->base(); + + membank("bankr0")->configure_entry(1, &main[0x0000]); + membank("bankr0")->configure_entry(0, &main[0x10000]); + membank("bankw0")->configure_entry(0, &main[0x0000]); +} + +static MACHINE_CONFIG_START( ccs300, ccs300_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz) + MCFG_CPU_PROGRAM_MAP(ccs300_mem) + MCFG_CPU_IO_MAP(ccs300_io) + MCFG_MACHINE_RESET_OVERRIDE(ccs300_state, ccs300) + + /* video hardware */ + MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0) + MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(ccs300_state, kbd_put)) +MACHINE_CONFIG_END + +/* ROM definition */ +ROM_START( ccs300 ) + ROM_REGION( 0x10800, "maincpu", ROMREGION_ERASEFF ) + ROM_LOAD( "ccs300.rom", 0x10000, 0x0800, CRC(6cf22e31) SHA1(9aa3327cd8c23d0eab82cb6519891aff13ebe1d0)) +ROM_END + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ +COMP( 19??, ccs300, ccs2810, 0, ccs300, ccs300, ccs300_state, ccs300, "California Computer Systems", "CCS Model 300", MACHINE_IS_SKELETON ) |