/***************************************************************************
Besta-88 and Besta-90 engineering workstations.
Derived (OEMd?) from Force Computers' SYS68K series.
****************************************************************************/
#include "emu.h"
#include "cpu/m68000/m68000.h"
#include "machine/terminal.h"
#if 0
#include "machine/68561mpcc.h"
#endif
#define VERBOSE_DBG 1 /* general debug messages */
#define DBG_LOG(N,M,A) \
do { \
if(VERBOSE_DBG>=N) \
{ \
if( M ) \
logerror("%11.6f: %-24s",machine().time().as_double(),(char*)M ); \
logerror A; \
} \
} while (0)
#define TERMINAL_TAG "terminal"
class besta_state : public driver_device
{
public:
besta_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),
m_p_ram(*this, "p_ram")
{
}
DECLARE_READ8_MEMBER( mpcc_reg_r );
DECLARE_WRITE8_MEMBER( mpcc_reg_w );
DECLARE_WRITE8_MEMBER( kbd_put );
UINT8 m_term_data;
UINT8 m_mpcc_regs[32];
required_device<cpu_device> m_maincpu;
virtual void machine_reset();
required_device<generic_terminal_device> m_terminal;
required_shared_ptr<UINT32> m_p_ram;
};
#if 1
READ8_MEMBER( besta_state::mpcc_reg_r )
{
UINT8 ret;
if (!(offset == 0 && !m_mpcc_regs[0])) {
DBG_LOG(1,"mpcc_reg_r",("(%d) = %02X at %s\n", offset,
(offset > 31 ? -1 : m_mpcc_regs[offset]), machine().describe_context()));
}
switch (offset) {
case 0: /* r_stat aka ... */
return (m_term_data) ? 0x80 : 0;
case 2: /* r_data aka ... */
ret = m_term_data;
m_term_data = 0;
return ret;
default:
return m_mpcc_regs[offset];
}
}
WRITE8_MEMBER( besta_state::mpcc_reg_w )
{
device_t *devconf = machine().device(TERMINAL_TAG);
DBG_LOG(1,"mpcc_reg_w",("(%d) <- %02X at %s\n", offset, data, machine().describe_context()));
switch (offset) {
case 2:
m_term_data = data;
case 10:
dynamic_cast<generic_terminal_device *>(devconf)->write(*machine().memory().first_space(), 0, data);
default:
m_mpcc_regs[offset] = data; break;
}
}
WRITE8_MEMBER( besta_state::kbd_put )
{
mpcc_reg_w(space, (offs_t)2, data, mem_mask);
}
#endif
static ADDRESS_MAP_START(besta_mem, AS_PROGRAM, 32, besta_state)
AM_RANGE(0x00000000, 0x001fffff) AM_RAM AM_SHARE("p_ram") // local bus DRAM, 4MB
// AM_RANGE(0x08010000, 0x08011fff) AM_RAM // unknown -- accessed by cp31dssp
AM_RANGE(0xff000000, 0xff00ffff) AM_ROM AM_REGION("user1",0) // actual mapping is up to 0xff03ffff
AM_RANGE(0xff040000, 0xff07ffff) AM_RAM // onboard SRAM
// 68561 MPCC (console)
// AM_RANGE(0xff800000, 0xff80001f) AM_DEVREADWRITE8("mpcc", mpcc68561_t, reg_r, reg_w, 0xffffffff)
AM_RANGE(0xff800000, 0xff80001f) AM_READWRITE8(mpcc_reg_r, mpcc_reg_w, 0xffffffff)
// AM_RANGE(0xff800200, 0xff800xxx) // 68230 PIT2
// AM_RANGE(0xff800400, 0xff800xxx) // ??? -- shows up in cp31dssp log
// AM_RANGE(0xff800800, 0xff800xxx) // BIM
// AM_RANGE(0xff800a00, 0xff800xxx) // 62421 RTC
// AM_RANGE(0xff800c00, 0xff800xxx) // 68230 PIT
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( besta )
INPUT_PORTS_END
void besta_state::machine_reset()
{
UINT8* user1 = memregion("user1")->base();
memcpy((UINT8*)m_p_ram.target(),user1,0x10000); // not really what happens but...
memset(m_mpcc_regs, sizeof(m_mpcc_regs), 0); // should initialize to defined values
m_mpcc_regs[8] = 0x80; // always ready to transmit
m_maincpu->reset();
}
/* CP31 processor board */
static MACHINE_CONFIG_START( besta, besta_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M68030, 2*16670000)
MCFG_CPU_PROGRAM_MAP(besta_mem)
#if 0
MCFG_DEVICE_ADD("mpcc", MPCC68561, XTAL_25MHz); // confirm internal oscillator frequency
#endif
MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0)
MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(besta_state, kbd_put))
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( besta88 )
ROM_REGION32_BE( 0x10000, "user1", ROMREGION_ERASEFF )
ROM_SYSTEM_BIOS(0, "cp31dbg", "CP31 Debug")
ROMX_LOAD( "cp31dbgboot.27c512", 0x0000, 0x10000, CRC(9bf057de) SHA1(b13cb16042e4c6ca63ae26058a78259c0849d0b6), ROM_BIOS(1))
ROM_SYSTEM_BIOS(1, "cp31dssp", "CP31 DSSP")
ROMX_LOAD( "cp31dsspboot.27c512", 0x0000, 0x10000, CRC(607a0a55) SHA1(c257a88672ab39d2f3fad681d22e062182b0236d), ROM_BIOS(2))
ROM_SYSTEM_BIOS(2, "cp31os9", "CP31 OS9")
ROMX_LOAD( "cp31os9.27c512", 0x0000, 0x10000, CRC(607a0a55) SHA1(c257a88672ab39d2f3fad681d22e062182b0236d), ROM_BIOS(3))
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 1988, besta88, 0, 0, besta, besta, driver_device, 0, "Sapsan", "Besta-88", GAME_NOT_WORKING | GAME_NO_SOUND)