diff options
Diffstat (limited to 'src/mame/drivers/m6805evs.c')
-rw-r--r-- | src/mame/drivers/m6805evs.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/mame/drivers/m6805evs.c b/src/mame/drivers/m6805evs.c new file mode 100644 index 00000000000..91400aa4a6d --- /dev/null +++ b/src/mame/drivers/m6805evs.c @@ -0,0 +1,80 @@ +// license:BSD-3-Clause +// copyright-holders:Robbbert +/****************************************************************************************************** + +Motorola M68HC05EVS evaluation system + +Chips: +Main board: XC68HC26P, R65C52P2, MS62256l-70PC, MS6264L-70PC, eprom. Xtal = 3.6864MHz +Emulator board: MC68C705P9CP, undumped 28-pin prom. Xtal = 4MHz + +R65C52 = Dual ACIA with inbuilt baud rate divider, uses 8 addresses, uses the 3.6864MHz crystal +XC68HC26P = PPI (3 ports), uses 8 addresses. + +2014-01-12 Skeleton driver + +The rom is larger than the available address space, but not all of it is programmed. The code +ranges are 800-18FF,1FF0-1FFF. There must be a banking scheme in use. + +Memory map guess +000-07F Stack (and user ram?) +080-0FF RAM (or devices?) +100-FFF ROM + +ToDo: +- Everything + +******************************************************************************************************/ + +#include "emu.h" +#include "cpu/m6805/m6805.h" + + +class m6805evs_state : public driver_device +{ +public: + m6805evs_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag) + , m_maincpu(*this, "maincpu") + { } + +private: + required_device<cpu_device> m_maincpu; + virtual void machine_reset(); +}; + + +static ADDRESS_MAP_START( m6805evs_mem, AS_PROGRAM, 8, m6805evs_state ) + AM_RANGE(0x0000, 0x00ff) AM_RAM + AM_RANGE(0x0100, 0x07ff) AM_ROM AM_REGION("roms", 0x1100) + AM_RANGE(0x0800, 0x0fef) AM_ROM AM_REGION("roms", 0x0800) + AM_RANGE(0x0ff0, 0x0fff) AM_ROM AM_REGION("roms", 0x1ff0) +ADDRESS_MAP_END + +static INPUT_PORTS_START( m6805evs ) +INPUT_PORTS_END + +void m6805evs_state::machine_reset() +{ +} + +static MACHINE_CONFIG_START( m6805evs, m6805evs_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", M68705, XTAL_4MHz) + MCFG_CPU_PROGRAM_MAP(m6805evs_mem) +MACHINE_CONFIG_END + +ROM_START(m6805evs) + ROM_REGION(0x2000, "roms", 0) + ROM_LOAD( "evsbug12.bin", 0x0000, 0x2000, CRC(8b581aef) SHA1(eacf425cc8a042085ccc4097cc61570b633b1e38) ) +ROM_END + + +/*************************************************************************** + + Game driver(s) + +***************************************************************************/ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME */ +COMP( 1990, m6805evs, 0, 0, m6805evs, m6805evs, driver_device, 0, "Motorola", "M68HC05EVS", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW ) |