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Diffstat (limited to 'src/mame/drivers/ccs300.cpp')
-rw-r--r--src/mame/drivers/ccs300.cpp101
1 files changed, 61 insertions, 40 deletions
diff --git a/src/mame/drivers/ccs300.cpp b/src/mame/drivers/ccs300.cpp
index 78f52e4f770..9e78f79ee9f 100644
--- a/src/mame/drivers/ccs300.cpp
+++ b/src/mame/drivers/ccs300.cpp
@@ -15,38 +15,36 @@ 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"
+#include "cpu/z80/z80daisy.h"
+#include "machine/z80ctc.h"
+#include "machine/z80pio.h"
+#include "machine/z80sio.h"
+#include "machine/clock.h"
+#include "bus/rs232/rs232.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)
- {
- }
+ : driver_device(mconfig, type, tag)
+ , m_maincpu(*this, "maincpu")
+ , m_sio(*this, "sio")
+ { }
+ DECLARE_WRITE_LINE_MEMBER(clock_tick);
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);
- void kbd_put(u8 data);
private:
- uint8_t m_term_data;
required_device<cpu_device> m_maincpu;
- required_device<generic_terminal_device> m_terminal;
+ required_device<z80sio_device> m_sio;
};
static ADDRESS_MAP_START(ccs300_mem, AS_PROGRAM, 8, ccs300_state)
@@ -58,41 +56,34 @@ 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(0x10, 0x13) AM_DEVREADWRITE("sio", z80sio_device, ba_cd_r, ba_cd_w)
+ AM_RANGE(0x14, 0x17) AM_DEVREADWRITE("pio", z80pio_device, read_alt, write_alt) // init bytes seem to be for a PIO
+ AM_RANGE(0x18, 0x1b) AM_DEVREADWRITE("ctc", z80ctc_device, read, write) // init bytes seem to be for a CTC
+ AM_RANGE(0x30, 0x33) // fdc?
+ AM_RANGE(0x34, 0x34) // motor control?
AM_RANGE(0x40, 0x40) AM_WRITE(port40_w)
+ AM_RANGE(0xf0, 0xf0) // unknown, long sequence of init bytes
+ AM_RANGE(0xf2, 0xf2) // dip or jumper?
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( ccs300 )
INPUT_PORTS_END
-//*************************************
-//
-// Keyboard
-//
-//*************************************
-READ8_MEMBER( ccs300_state::port10_r )
-{
- uint8_t ret = m_term_data;
- m_term_data = 0;
- return ret;
-}
-
-READ8_MEMBER( ccs300_state::port11_r )
+// source of baud frequency is unknown, so we invent a clock
+WRITE_LINE_MEMBER( ccs300_state::clock_tick )
{
- return (m_term_data) ? 5 : 4;
+ m_sio->txca_w(state);
+ m_sio->rxca_w(state);
}
-WRITE8_MEMBER( ccs300_state::port10_w )
+static const z80_daisy_config daisy_chain[] =
{
- m_terminal->write(space, 0, data & 0x7f);
-}
-
-void ccs300_state::kbd_put(u8 data)
-{
- m_term_data = data;
-}
+ { "ctc" },
+ { "sio" },
+ { "pio" },
+ { nullptr }
+};
//*************************************
//
@@ -119,16 +110,46 @@ DRIVER_INIT_MEMBER( ccs300_state, ccs300 )
membank("bankw0")->configure_entry(0, &main[0x0000]);
}
+// bit 7 needs to be stripped off, we do this by choosing 7 bits and even parity
+static DEVICE_INPUT_DEFAULTS_START( terminal )
+ DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_9600 )
+ DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_9600 )
+ DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 )
+ DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_7 )
+ DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_EVEN )
+ DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_2 )
+DEVICE_INPUT_DEFAULTS_END
+
static MACHINE_CONFIG_START( ccs300 )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz)
MCFG_CPU_PROGRAM_MAP(ccs300_mem)
MCFG_CPU_IO_MAP(ccs300_io)
+ MCFG_Z80_DAISY_CHAIN(daisy_chain)
+
MCFG_MACHINE_RESET_OVERRIDE(ccs300_state, ccs300)
/* video hardware */
- MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0)
- MCFG_GENERIC_TERMINAL_KEYBOARD_CB(PUT(ccs300_state, kbd_put))
+ MCFG_DEVICE_ADD("uart_clock", CLOCK, 153600)
+ MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(ccs300_state, clock_tick))
+
+ /* Devices */
+ MCFG_Z80SIO_ADD("sio", XTAL_4MHz, 0, 0, 0, 0)
+ MCFG_Z80SIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0))
+ MCFG_Z80SIO_OUT_TXDA_CB(DEVWRITELINE("rs232", rs232_port_device, write_txd))
+ MCFG_Z80SIO_OUT_DTRA_CB(DEVWRITELINE("rs232", rs232_port_device, write_dtr))
+ MCFG_Z80SIO_OUT_RTSA_CB(DEVWRITELINE("rs232", rs232_port_device, write_rts))
+
+ MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, "terminal")
+ MCFG_RS232_RXD_HANDLER(DEVWRITELINE("sio", z80sio_device, rxa_w))
+ MCFG_RS232_CTS_HANDLER(DEVWRITELINE("sio", z80sio_device, ctsa_w))
+ MCFG_DEVICE_CARD_DEVICE_INPUT_DEFAULTS("terminal", terminal) // must be exactly here
+
+ MCFG_DEVICE_ADD("ctc", Z80CTC, XTAL_4MHz)
+ MCFG_Z80CTC_INTR_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0))
+
+ MCFG_DEVICE_ADD("pio", Z80PIO, XTAL_4MHz)
+ MCFG_Z80PIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0))
MACHINE_CONFIG_END
/* ROM definition */