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https://github.com/holub/mame
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(MESS) Votrtnt: connected acia and rs232
This commit is contained in:
Robbbert
parent
e434c2ba8d
commit
2c64811116
@ -25,22 +25,17 @@
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*
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* ToDo:
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* - Votrax device needs considerable improvement in sound quality.
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* - Reconnect the ACIA when serial coms become viable in MESS.
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*
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*
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******************************************************************************/
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/* Core includes */
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#include "emu.h"
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#include "cpu/m6800/m6800.h"
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#include "votrtnt.lh"
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/* Components */
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#include "sound/votrax.h"
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#include "machine/6850acia.h"
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/* For testing */
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#include "machine/terminal.h"
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#include "machine/serial.h"
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#include "sound/votrax.h"
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#include "votrtnt.lh"
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class votrtnt_state : public driver_device
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@ -49,34 +44,14 @@ public:
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votrtnt_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag),
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m_maincpu(*this, "maincpu"),
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m_terminal(*this, TERMINAL_TAG),
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//m_acia(*this, "acia_0"),
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m_votrax(*this, "votrax")
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{ }
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required_device<cpu_device> m_maincpu;
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required_device<generic_terminal_device> m_terminal;
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//required_device<> m_acia;
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required_device<votrax_sc01_device> m_votrax;
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DECLARE_READ8_MEMBER(votrtnt_acia_status_r);
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DECLARE_READ8_MEMBER(votrtnt_acia_data_r);
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DECLARE_WRITE8_MEMBER(votrtnt_kbd_put);
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UINT8 m_term_data;
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UINT8 m_term_status;
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virtual void machine_reset();
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};
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READ8_MEMBER( votrtnt_state::votrtnt_acia_status_r )
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{
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return m_term_status;
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}
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READ8_MEMBER( votrtnt_state::votrtnt_acia_data_r )
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{
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m_term_status = 0xe2;
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return m_term_data;
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}
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/******************************************************************************
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Address Maps
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@ -86,10 +61,8 @@ static ADDRESS_MAP_START(6802_mem, AS_PROGRAM, 8, votrtnt_state)
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ADDRESS_MAP_UNMAP_HIGH
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ADDRESS_MAP_GLOBAL_MASK(0x6fff)
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AM_RANGE(0x0000, 0x03ff) AM_RAM AM_MIRROR(0xc00)/* RAM, 2114*2 (0x400 bytes) mirrored 4x */
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//AM_RANGE(0x2000, 0x2000) AM_NOP AM_MIRROR(0xffe)//AM_DEVREADWRITE("acia_0",aciastat_r,aciactrl_w)/* 6850 ACIA */
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//AM_RANGE(0x2001, 0x2001) AM_NOP AM_MIRROR(0xffe)//AM_DEVREADWRITE("acia_0",aciadata_r,aciadata_w)/* 6850 ACIA */
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AM_RANGE(0x2000, 0x2000) AM_MIRROR(0xffe) AM_READ(votrtnt_acia_status_r) AM_WRITENOP// temp testing
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AM_RANGE(0x2001, 0x2001) AM_MIRROR(0xffe) AM_READ(votrtnt_acia_data_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write) // temp testing
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AM_RANGE(0x2000, 0x2000) AM_MIRROR(0xffe) AM_DEVREADWRITE("acia", acia6850_device, status_read, control_write)
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AM_RANGE(0x2001, 0x2001) AM_MIRROR(0xffe) AM_DEVREADWRITE("acia", acia6850_device, data_read, data_write)
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AM_RANGE(0x4000, 0x5fff) AM_DEVWRITE("votrax", votrax_sc01_device, write) /* low 6 bits write to 6 bit input of sc-01-a; high 2 bits are ignored (but by adding a buffer chip could be made to control the inflection bits of the sc-01-a which are normally grounded on the tnt) */
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AM_RANGE(0x6000, 0x6fff) AM_ROM /* ROM in potted block */
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ADDRESS_MAP_END
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@ -101,7 +74,7 @@ ADDRESS_MAP_END
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static INPUT_PORTS_START(votrtnt)
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PORT_START("DSW1") /* not connected to cpu, each switch is connected directly to the output of a 4040 counter dividing the cpu m1? clock to feed the 6850 ACIA. Setting more than one switch on is a bad idea. see tnt_schematic.jpg */
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PORT_DIPNAME( 0xFF, 0x00, "Baud Rate" ) PORT_DIPLOCATION("SW1:1,2,3,4,5,6,7,8")
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PORT_DIPNAME( 0xFF, 0x80, "Baud Rate" ) PORT_DIPLOCATION("SW1:1,2,3,4,5,6,7,8")
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PORT_DIPSETTING( 0x01, "75" )
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PORT_DIPSETTING( 0x02, "150" )
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PORT_DIPSETTING( 0x04, "300" )
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@ -114,19 +87,27 @@ INPUT_PORTS_END
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void votrtnt_state::machine_reset()
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{
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m_term_data = 0;
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m_term_status = 0xe2;
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}
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WRITE8_MEMBER( votrtnt_state::votrtnt_kbd_put )
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static ACIA6850_INTERFACE( acia_intf )
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{
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m_term_data = data;
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m_term_status = 0xe3;
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}
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153600,
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153600,
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DEVCB_DEVICE_LINE_MEMBER("rs232", serial_port_device, rx),
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DEVCB_DEVICE_LINE_MEMBER("rs232", serial_port_device, tx),
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DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, cts_r),
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DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, rts_w),
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DEVCB_NULL,
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DEVCB_NULL
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};
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static GENERIC_TERMINAL_INTERFACE( votrtnt_terminal_intf )
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static const rs232_port_interface rs232_intf =
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{
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DEVCB_DRIVER_MEMBER(votrtnt_state, votrtnt_kbd_put)
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL
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};
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static struct votrax_sc01_interface votrtnt_votrax_interface =
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@ -147,14 +128,13 @@ static MACHINE_CONFIG_START( votrtnt, votrtnt_state )
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//MCFG_DEFAULT_LAYOUT(layout_votrtnt)
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/* serial hardware */
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//MCFG_ACIA6850_ADD("acia_0", acia_intf)
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MCFG_ACIA6850_ADD("acia", acia_intf)
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MCFG_RS232_PORT_ADD("rs232", rs232_intf, default_rs232_devices, "serial_terminal")
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/* sound hardware */
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MCFG_SPEAKER_STANDARD_MONO("mono")
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MCFG_VOTRAX_SC01_ADD("votrax", 1700000, votrtnt_votrax_interface ) /* 1.70 MHz? needs verify */
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
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MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, votrtnt_terminal_intf)
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MACHINE_CONFIG_END
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@ -169,26 +149,9 @@ ROM_START(votrtnt)
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ROM_END
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/******************************************************************************
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Stuff that belongs in machine/votrtnt.c
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******************************************************************************/
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/*
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static ACIA6850_INTERFACE( acia_intf )
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{
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9600, // rx clock, actually based on dipswitches
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9600, // tx clock, actually based on dipswitches
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DEVCB_NULL, // rx callback
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DEVCB_NULL, // tx callback
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL
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};*/
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/******************************************************************************
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Drivers
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******************************************************************************/
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/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
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COMP( 1980, votrtnt, 0, 0, votrtnt, votrtnt, driver_device, 0, "Votrax", "Type 'N Talk", GAME_NOT_WORKING )
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/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
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COMP( 1980, votrtnt, 0, 0, votrtnt, votrtnt, driver_device, 0, "Votrax", "Type 'N Talk", GAME_NOT_WORKING )
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