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/***************************************************************************
CCS Model 2810
11/12/2009 Skeleton driver.
02/06/2011 Connected to a terminal
Press Enter to start the system.
All commands are in uppercase.
A Assign logical device
Dn,n Dump memory
E Punch End-of-File to paper tape
F Fill
G Go
H Hex arithmetic
I In
L Punch Leader to paper tape
M Move
O Out
Q Query logical devices
R Read a file from paper tape
S Edit memory
T Test memory
V Verify (compare 2 blocks of memory)
W Write a file to paper tape
X Examine Registers
Y Set Baud rate of i8250
Z Zleep (lock terminal). Press control+G twice to unlock.
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/ins8250.h"
#include "machine/terminal.h"
class ccs2810_state : public driver_device
{
public:
ccs2810_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)
{ }
required_device<cpu_device> m_maincpu;
required_device<generic_terminal_device> m_terminal;
DECLARE_READ8_MEMBER( ccs2810_20_r );
DECLARE_READ8_MEMBER( ccs2810_25_r );
DECLARE_READ8_MEMBER( ccs2810_26_r );
DECLARE_WRITE8_MEMBER( ccs2810_20_w );
DECLARE_WRITE8_MEMBER( kbd_put );
UINT8 m_term_data;
UINT8 m_26_count;
virtual void machine_reset();
};
READ8_MEMBER( ccs2810_state::ccs2810_20_r )
{
UINT8 ret = m_term_data;
m_term_data = 0;
return ret;
}
READ8_MEMBER( ccs2810_state::ccs2810_25_r )
{
return (m_term_data) ? 0x21 : 0x20;
}
READ8_MEMBER( ccs2810_state::ccs2810_26_r )
{
if (m_26_count) m_26_count--;
return m_26_count;
}
WRITE8_MEMBER( ccs2810_state::ccs2810_20_w )
{
m_terminal->write(space, 0, data & 0x7f);
}
static ADDRESS_MAP_START(ccs2810_mem, AS_PROGRAM, 8, ccs2810_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0xefff) AM_RAM
AM_RANGE(0xf000, 0xf7ff) AM_ROM
ADDRESS_MAP_END
static ADDRESS_MAP_START(ccs2810_io, AS_IO, 8, ccs2810_state)
ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x20, 0x20) AM_READWRITE(ccs2810_20_r,ccs2810_20_w)
AM_RANGE(0x25, 0x25) AM_READ(ccs2810_25_r)
AM_RANGE(0x26, 0x26) AM_READ(ccs2810_26_r)
//AM_RANGE(0x20, 0x27) AM_DEVREADWRITE_LEGACY("ins8250", ins8250_r, ins8250_w )
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( ccs2810 )
INPUT_PORTS_END
WRITE8_MEMBER( ccs2810_state::kbd_put )
{
m_term_data = data;
}
static GENERIC_TERMINAL_INTERFACE( terminal_intf )
{
DEVCB_DRIVER_MEMBER(ccs2810_state, kbd_put)
};
void ccs2810_state::machine_reset()
{
m_maincpu->set_state_int(Z80_PC, 0xf000);
m_26_count = 0x41;
}
static const ins8250_interface ccs2810_com_interface =
{
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL
};
static MACHINE_CONFIG_START( ccs2810, ccs2810_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz)
MCFG_CPU_PROGRAM_MAP(ccs2810_mem)
MCFG_CPU_IO_MAP(ccs2810_io)
MCFG_INS8250_ADD( "ins8250", ccs2810_com_interface, XTAL_1_8432MHz )
/* video hardware */
MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf)
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( ccs2810 )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "ccs2810_u8.bin", 0xf000, 0x0800, CRC(0c3054ea) SHA1(c554b7c44a61af13decb2785f3c9b33c6fc2bfce))
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 1980, ccs2810, 0, 0, ccs2810, ccs2810, driver_device, 0, "California Computer Systems", "CCS Model 2810", GAME_NO_SOUND_HW)
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