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(MESS) ccs : Last part (nw)

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Robbbert 2013-09-10 09:08:11 +00:00
parent 9112614335
commit eaf58835d5
1 changed files with 64 additions and 33 deletions
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97
src/mess/drivers/ccs300.c
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@ -6,6 +6,15 @@
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"
@ -18,24 +27,46 @@ 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_ccs_ram(*this, "ccs_ram")
, 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);
required_shared_ptr<UINT8> m_ccs_ram;
private:
UINT8 m_term_data;
virtual void machine_reset();
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;
@ -53,32 +84,6 @@ WRITE8_MEMBER( ccs300_state::port10_w )
m_terminal->write(space, 0, data & 0x7f);
}
static ADDRESS_MAP_START(ccs300_mem, AS_PROGRAM, 8, ccs300_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0xefff) AM_RAM AM_SHARE("ccs_ram")
AM_RANGE(0xf000, 0xf7ff) AM_ROM AM_REGION("user1", 0xf000)
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)
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( ccs300 )
INPUT_PORTS_END
void ccs300_state::machine_reset()
{
UINT8* user1 = memregion("user1")->base();
memcpy((UINT8*)m_ccs_ram, user1, 0x0800);
// this should be rom/ram banking
}
WRITE8_MEMBER( ccs300_state::kbd_put )
{
m_term_data = data;
@ -89,11 +94,37 @@ static GENERIC_TERMINAL_INTERFACE( terminal_intf )
DEVCB_DRIVER_MEMBER(ccs300_state, kbd_put)
};
//*************************************
//
// 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_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf)
@ -101,11 +132,11 @@ MACHINE_CONFIG_END
/* ROM definition */
ROM_START( ccs300 )
ROM_REGION( 0x10000, "user1", ROMREGION_ERASEFF )
ROM_LOAD( "ccs300.rom", 0x0000, 0x0800, CRC(6cf22e31) SHA1(9aa3327cd8c23d0eab82cb6519891aff13ebe1d0))
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, driver_device, 0, "California Computer Systems", "CCS Model 300", GAME_IS_SKELETON )
/* 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", GAME_IS_SKELETON )