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SDK80: connected to terminal. It boots up to Basic.

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This commit is contained in:
Robbbert 2015-07-16 13:05:21 +10:00
parent af5046b39c
commit 5438e5454f
1 changed files with 57 additions and 15 deletions
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72
src/mess/drivers/sdk80.c
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@ -10,16 +10,27 @@ There is no speaker or storage facility in the standard kit.
Download the User Manual to get the operating procedures.
Monitor Commands:
D Display memory contents
G Go to address (execute program at address)
I Insert hex code
M Move blocks of memory
S Substitute memory locations
X Examine registers
Please note this rom set boots into BASIC, not monitor.
****************************************************************************/
#include "emu.h"
#include "cpu/i8085/i8085.h"
#include "machine/pit8253.h"
#include "machine/i8251.h"
#include "machine/i8255.h"
#include "machine/i8279.h"
#include "machine/ay31015.h"
#include "bus/rs232/rs232.h"
//#include "machine/pit8253.h"
//#include "machine/i8251.h"
//#include "machine/i8255.h"
//#include "machine/i8279.h"
//#include "machine/ay31015.h"
//#include "bus/rs232/rs232.h"
#include "machine/terminal.h"
class sdk80_state : public driver_device
@ -28,30 +39,53 @@ public:
sdk80_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_terminal(*this, "terminal")
{ }
DECLARE_WRITE8_MEMBER(scanlines_w);
DECLARE_WRITE8_MEMBER(digit_w);
DECLARE_READ8_MEMBER(kbd_r);
DECLARE_READ8_MEMBER(portec_r);
DECLARE_READ8_MEMBER(ported_r);
DECLARE_WRITE8_MEMBER(kbd_put);
UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
private:
UINT8 m_digit;
UINT8 m_term_data;
required_device<cpu_device> m_maincpu;
required_device<generic_terminal_device> m_terminal;
};
static ADDRESS_MAP_START(sdk80_mem, AS_PROGRAM, 8, sdk80_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x0fff) AM_ROM
AM_RANGE(0x3000, 0x3fff) AM_RAM
AM_RANGE(0x3c00, 0x3fff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START(sdk80_io, AS_IO, 8, sdk80_state)
ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0xec, 0xec) AM_READ(portec_r) AM_DEVWRITE("terminal", generic_terminal_device, write)
AM_RANGE(0xed, 0xed) AM_READ(ported_r)
//AM_RANGE(0xec, 0xec) AM_DEVREADWRITE("uart", i8251_device, data_r, data_w)
//AM_RANGE(0xed, 0xed) AM_DEVREADWRITE("uart", i8251_device, status_r, control_w)
ADDRESS_MAP_END
static INPUT_PORTS_START( sdk80 )
INPUT_PORTS_END
READ8_MEMBER( sdk80_state::portec_r )
{
UINT8 ret = m_term_data;
m_term_data = 0;
return ret;
}
READ8_MEMBER( sdk80_state::ported_r )
{
return (m_term_data) ? 3 : 1;
}
#if 0
/* Graphics Output */
const gfx_layout sdk80_charlayout =
@ -101,20 +135,25 @@ READ8_MEMBER( sdk80_state::kbd_r )
return data;
}
WRITE8_MEMBER( sdk80_state::kbd_put )
{
m_term_data = data;
}
static MACHINE_CONFIG_START( sdk80, sdk80_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", I8080A, 500000)
MCFG_CPU_PROGRAM_MAP(sdk80_mem)
MCFG_CPU_IO_MAP(sdk80_io)
MCFG_DEVICE_ADD("uart", I8251, 0)
MCFG_I8251_TXD_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_txd))
MCFG_I8251_DTR_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_dtr))
MCFG_I8251_RTS_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_rts))
// MCFG_DEVICE_ADD("uart", I8251, 0)
// MCFG_I8251_TXD_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_txd))
// MCFG_I8251_DTR_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_dtr))
// MCFG_I8251_RTS_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_rts))
MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, NULL)
MCFG_RS232_RXD_HANDLER(DEVWRITELINE("uart", i8251_device, write_rxd))
MCFG_RS232_DSR_HANDLER(DEVWRITELINE("uart", i8251_device, write_dsr))
// MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, "terminal")
// MCFG_RS232_RXD_HANDLER(DEVWRITELINE("uart", i8251_device, write_rxd))
// MCFG_RS232_DSR_HANDLER(DEVWRITELINE("uart", i8251_device, write_dsr))
// old references to other drivers have been left in
// MCFG_DEVICE_ADD("pit8253", PIT8253, 0)
@ -171,6 +210,9 @@ static MACHINE_CONFIG_START( sdk80, sdk80_state )
// MCFG_I8279_IN_RL_CB(READ8(sdk80_state, kbd_r)) // kbd RL lines
// MCFG_I8279_IN_SHIFT_CB(VCC) // Shift key
// MCFG_I8279_IN_CTRL_CB(VCC)
MCFG_DEVICE_ADD("terminal", GENERIC_TERMINAL, 0)
MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(sdk80_state, kbd_put))
MACHINE_CONFIG_END
/* ROM definition */
@ -187,4 +229,4 @@ ROM_START( sdk80 )
ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
COMP( 1975, sdk80, 0, 0, sdk80, sdk80, driver_device, 0, "Intel", "SDK-80", GAME_NO_SOUND_HW)
COMP( 1975, sdk80, 0, 0, sdk80, sdk80, driver_device, 0, "Intel", "SDK-80", GAME_NO_SOUND_HW | GAME_NOT_WORKING )