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(MESS) microdec : added notes

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This commit is contained in:
Robbbert 2013-09-05 11:41:09 +00:00
parent fd256d5d1e
commit c94cc23274
1 changed files with 26 additions and 17 deletions
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43
src/mess/drivers/microdec.c
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@ -2,7 +2,7 @@
Morrow Designs Micro Decision
10/12/2009 Skeleton driver.
2009-12-10 Skeleton driver.
****************************************************************************/
@ -16,30 +16,30 @@ class microdec_state : public driver_device
{
public:
microdec_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_terminal(*this, TERMINAL_TAG) ,
m_maincpu(*this, "maincpu") { }
: driver_device(mconfig, type, tag)
, m_terminal(*this, TERMINAL_TAG)
, m_maincpu(*this, "maincpu")
{ }
DECLARE_READ8_MEMBER(terminal_status_r);
DECLARE_READ8_MEMBER(terminal_r);
DECLARE_READ8_MEMBER(status_r);
DECLARE_READ8_MEMBER(keyin_r);
DECLARE_WRITE8_MEMBER(kbd_put);
private:
UINT8 m_term_data;
required_device<generic_terminal_device> m_terminal;
virtual void machine_reset();
virtual void machine_start();
void fdc_irq(bool state);
required_device<generic_terminal_device> m_terminal;
required_device<cpu_device> m_maincpu;
};
READ8_MEMBER( microdec_state::terminal_status_r )
READ8_MEMBER( microdec_state::status_r )
{
return (m_term_data) ? 3 : 1;
}
READ8_MEMBER( microdec_state::terminal_r )
READ8_MEMBER( microdec_state::keyin_r )
{
UINT8 ret = m_term_data;
m_term_data = 0;
@ -56,8 +56,18 @@ static ADDRESS_MAP_START(microdec_io, AS_IO, 8, microdec_state)
ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0xfa, 0xfb) AM_DEVICE("upd765", upd765a_device, map)
AM_RANGE(0xfc, 0xfc) AM_READ(terminal_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write)
AM_RANGE(0xfd, 0xfd) AM_READ(terminal_status_r)
AM_RANGE(0xfc, 0xfc) AM_READ(keyin_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write)
AM_RANGE(0xfd, 0xfd) AM_READ(status_r)
// AM_RANGE(0xf0, 0xf3) 8253 PIT (md3 only) used as a baud rate generator for serial ports
// AM_RANGE(0xf4, 0xf4) Centronics data
// AM_RANGE(0xf5, 0xf5) motor check (md1/2)
// AM_RANGE(0xf5, 0xf5) Centronics status (md3) read bit 3 (ack=1); read bit 4 (busy=1); write bit 7 (stb=0)
// AM_RANGE(0xf6, 0xf6) rom enable (w=enable; r=disable)
// AM_RANGE(0xf7, 0xf7) VFO Count set
// AM_RANGE(0xf8, 0xf8) Motor and SHift control
// AM_RANGE(0xfa, 0xfb) uPD765C fdc FA=status; FB=data
// AM_RANGE(0xfc, 0xfd) Serial Port 1 FC=data FD=status
// AM_RANGE(0xfe, 0xff) Serial Port 2 FE=data FF=status
ADDRESS_MAP_END
/* Input ports */
@ -98,7 +108,6 @@ static MACHINE_CONFIG_START( microdec, microdec_state )
MCFG_CPU_PROGRAM_MAP(microdec_mem)
MCFG_CPU_IO_MAP(microdec_io)
/* video hardware */
MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf)
@ -134,6 +143,6 @@ ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 1982, md2, 0, 0, microdec, microdec, driver_device, 0, "Morrow Designs", "Micro Decision MD-2",GAME_NOT_WORKING | GAME_NO_SOUND)
COMP( 1982, md3, md2, 0, microdec, microdec, driver_device, 0, "Morrow Designs", "Micro Decision MD-3",GAME_NOT_WORKING | GAME_NO_SOUND)
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
COMP( 1982, md2, 0, 0, microdec, microdec, driver_device, 0, "Morrow Designs", "Micro Decision MD-2", GAME_NOT_WORKING | GAME_NO_SOUND)
COMP( 1982, md3, md2, 0, microdec, microdec, driver_device, 0, "Morrow Designs", "Micro Decision MD-3", GAME_NOT_WORKING | GAME_NO_SOUND)