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r25405 Tuesday 24th September, 2013 at 12:42:08 UTC by Robbbert
(MESS) votrpss : connected devices (nw)
[src/mess/drivers]votrpss.c

trunk/src/mess/drivers/votrpss.c
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5353<kevtris> but that's everything you need
5454<LordNLptp> yeah
5555
56*  (driver structure copied from vtech1.c)
56
57Things to be looked at:
58- Serial doesn't work, so has been disabled.
59- Bottom 3 dips must be off/serial/off, or else nothing works.
60- No sound at all.
61- volume and pitch should be controlled by ppi outputs
62- pit to be hooked up
63- bit 0 of portc is not connected according to text above, but it
64  completely changes the irq operation.
65
5766******************************************************************************/
5867
5968/* Core includes */
6069#include "emu.h"
6170#include "cpu/z80/z80.h"
62#include "votrpss.lh"
71//#include "votrpss.lh"
6372
6473/* Components */
65//#include "sound/ay8910.h"
66//#include "sound/votrax.h"
67//#include "machine/i8255.h"
68//#include "machine/pit8253.h"
69//#include "machine/i8251.h"
74#include "sound/ay8910.h"
75#include "sound/votrax.h"
76#include "machine/i8255.h"
77#include "machine/pit8253.h"
78#include "machine/i8251.h"
79#include "machine/serial.h"
7080
7181/* For testing */
7282#include "machine/terminal.h"
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7686{
7787public:
7888   votrpss_state(const machine_config &mconfig, device_type type, const char *tag)
79      : driver_device(mconfig, type, tag),
80   m_maincpu(*this, "maincpu"),
81   m_terminal(*this, TERMINAL_TAG)
89      : driver_device(mconfig, type, tag)
90      , m_maincpu(*this, "maincpu")
91      , m_terminal(*this, TERMINAL_TAG)
92      , m_ppi(*this, "ppi")
93      , m_uart(*this, "uart")
8294   { }
8395
96   DECLARE_WRITE8_MEMBER(kbd_put);
97   DECLARE_READ8_MEMBER(ppi_pa_r);
98   DECLARE_READ8_MEMBER(ppi_pb_r);
99   DECLARE_READ8_MEMBER(ppi_pc_r);
100   DECLARE_WRITE8_MEMBER(ppi_pa_w);
101   DECLARE_WRITE8_MEMBER(ppi_pb_w);
102   DECLARE_WRITE8_MEMBER(ppi_pc_w);
103   TIMER_DEVICE_CALLBACK_MEMBER(irq_timer);
104   TIMER_DEVICE_CALLBACK_MEMBER(serial_tick);
105   IRQ_CALLBACK_MEMBER(irq_ack);
106private:
107   UINT8 m_term_data;
108   UINT8 m_porta;
109   UINT8 m_portb;
110   UINT8 m_portc;
111   virtual void machine_start();
84112   required_device<cpu_device> m_maincpu;
85113   required_device<generic_terminal_device> m_terminal;
86   DECLARE_READ8_MEMBER(votrpss_00_r);
87   DECLARE_READ8_MEMBER(votrpss_02_r);
88   DECLARE_READ8_MEMBER(votrpss_41_r);
89   DECLARE_WRITE8_MEMBER( votrpss_kbd_put );
90   UINT8 m_term_data;
91   UINT8 m_term_status;
114   required_device<i8255_device> m_ppi;
115   required_device<i8251_device> m_uart;
92116};
93117
94READ8_MEMBER( votrpss_state::votrpss_02_r )
95{
96   return m_term_status;
97}
98118
99READ8_MEMBER( votrpss_state::votrpss_00_r )
100{
101   m_term_status = 0;
102   return m_term_data;
103}
104
105READ8_MEMBER( votrpss_state::votrpss_41_r )
106{
107   return 1;
108}
109
110
111119/******************************************************************************
112120 Address Maps
113121******************************************************************************/
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124132
125133static ADDRESS_MAP_START(votrpss_io, AS_IO, 8, votrpss_state)
126134   ADDRESS_MAP_GLOBAL_MASK(0xff)
127   AM_RANGE(0x00, 0x00) AM_READ(votrpss_00_r)
128   AM_RANGE(0x01, 0x01) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write)
129   AM_RANGE(0x02, 0x02) AM_READ(votrpss_02_r)
130   AM_RANGE(0x41, 0x41) AM_READ(votrpss_41_r)
131   //AM_RANGE(0x00, 0xff) AM_NOP /* temporary */
132   //AM_RANGE(0x00, 0x03) AM_READWRITE(8255ppi_r, 8255ppi_w) AM_MIRROR (0x3c)
133   //AM_RANGE(0x40, 0x41) AM_READWRITE(i8251_r, i8251_w) AM_MIRROR (0x3e)
134   //AM_RANGE(0x80, 0x83) AM_READWRITE(pit8253_r, pit8253_w) AM_MIRROR (0x3c)
135   //AM_RANGE(0xc0, 0xc3) AM_DEVREADWRITE("ay1", ay8910_device, data_r, data_w) AM_MIRROR (0x3c)
135   AM_RANGE(0x00, 0x03) AM_MIRROR(0x3c) AM_DEVREADWRITE("ppi", i8255_device, read, write)
136   AM_RANGE(0x40, 0x40) AM_MIRROR(0x3e) AM_DEVREADWRITE("uart", i8251_device, data_r, data_w)
137   AM_RANGE(0x41, 0x41) AM_MIRROR(0x3e) AM_DEVREADWRITE("uart", i8251_device, status_r, control_w)
138   AM_RANGE(0x80, 0x83) AM_MIRROR(0x3c) AM_DEVREADWRITE("pit", pit8253_device, read, write)
139   AM_RANGE(0xc0, 0xc0) AM_MIRROR(0x3e) AM_DEVREADWRITE("ay", ay8910_device, data_r, address_w)
140   AM_RANGE(0xc1, 0xc1) AM_MIRROR(0x3e) AM_DEVREADWRITE("ay", ay8910_device, data_r, data_w)
136141ADDRESS_MAP_END
137142
138143
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168173   PORT_DIPSETTING(    0x80, DEF_STR ( On )  )
169174INPUT_PORTS_END
170175
171WRITE8_MEMBER( votrpss_state::votrpss_kbd_put )
176void votrpss_state::machine_start()
172177{
178   m_maincpu->set_irq_acknowledge_callback(device_irq_acknowledge_delegate(FUNC(votrpss_state::irq_ack),this));
179}
180
181TIMER_DEVICE_CALLBACK_MEMBER( votrpss_state::irq_timer )
182{
183   m_maincpu->set_input_line(0, ASSERT_LINE);
184}
185
186IRQ_CALLBACK_MEMBER( votrpss_state::irq_ack )
187{
188   m_maincpu->set_input_line(0, CLEAR_LINE);
189   return 0x38;
190}
191
192static const i8251_interface uart_intf =
193{
194   //DEVCB_DEVICE_LINE_MEMBER("rs232", serial_port_device, rx),
195   //DEVCB_DEVICE_LINE_MEMBER("rs232", serial_port_device, tx),
196   //DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, dsr_r),
197   //DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, dtr_w),
198   //DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, rts_w),
199   DEVCB_NULL,
200   DEVCB_NULL,
201   DEVCB_NULL,
202   DEVCB_NULL,
203   DEVCB_NULL,
204   DEVCB_NULL,
205   DEVCB_NULL,
206   DEVCB_NULL,
207   DEVCB_NULL
208};
209
210static const rs232_port_interface rs232_intf =
211{
212   DEVCB_NULL,
213   DEVCB_NULL,
214   DEVCB_NULL,
215   DEVCB_NULL,
216   DEVCB_NULL
217};
218
219static const struct pit8253_interface pit_intf =
220{
221   {
222      {
223         XTAL_8MHz,                /* Timer 0: baud rate gen for 8251 */
224         DEVCB_NULL,
225         DEVCB_NULL
226      }, {
227         XTAL_8MHz / 256,                /* Timer 1: Pitch */
228         DEVCB_NULL,
229         DEVCB_NULL
230      }, {
231         XTAL_8MHz / 4096,                /* Timer 2: Volume */
232         DEVCB_NULL,
233         DEVCB_NULL
234      }
235   }
236};
237
238READ8_MEMBER( votrpss_state::ppi_pa_r )
239{
240   UINT8 ret = m_term_data;
241   m_term_data = 0;
242   return ret;
243}
244
245READ8_MEMBER( votrpss_state::ppi_pb_r )
246{
247   return m_portb;
248}
249
250// Bit 0 controls what happens at interrupt time. See code around 518.
251READ8_MEMBER( votrpss_state::ppi_pc_r )
252{
253   UINT8 data = 0;
254
255   if (m_term_data)
256   {
257      m_ppi->pc4_w(0); // send a strobe pulse
258      data |= 0x20;
259   }
260
261   return (m_portc & 0xdb) | data;
262   //return data;
263}
264
265WRITE8_MEMBER( votrpss_state::ppi_pa_w )
266{
267   m_porta = data;
268}
269
270WRITE8_MEMBER( votrpss_state::ppi_pb_w )
271{
272   m_portb = data;
273   m_terminal->write(space, offset, data&0x7f);
274}
275
276WRITE8_MEMBER( votrpss_state::ppi_pc_w )
277{
278   m_portc = data;
279}
280
281static I8255_INTERFACE( ppi_intf )
282{
283   DEVCB_DRIVER_MEMBER(votrpss_state, ppi_pa_r),   // Port A read
284   DEVCB_DRIVER_MEMBER(votrpss_state, ppi_pa_w),   // Port A write
285   DEVCB_DRIVER_MEMBER(votrpss_state, ppi_pb_r),   // Port B read
286   DEVCB_DRIVER_MEMBER(votrpss_state, ppi_pb_w),   // Port B write
287   DEVCB_DRIVER_MEMBER(votrpss_state, ppi_pc_r),   // Port C read
288   DEVCB_DRIVER_MEMBER(votrpss_state, ppi_pc_w),   // Port C write
289};
290
291static const ay8910_interface ay8910_intf =
292{
293   AY8910_LEGACY_OUTPUT,   // flags
294   AY8910_DEFAULT_LOADS,   // channel load in ohms
295   DEVCB_NULL,        // port A read
296   DEVCB_INPUT_PORT("DSW1"),        // port B read
297   DEVCB_DEVICE_MEMBER("votrax", votrax_sc01_device, write),     // port A write
298   DEVCB_NULL      // port B write
299};
300
301static struct votrax_sc01_interface votrax_interface =
302{
303};
304
305WRITE8_MEMBER( votrpss_state::kbd_put )
306{
173307   m_term_data = data;
174   m_term_status = 0x20;
175308}
176309
177static GENERIC_TERMINAL_INTERFACE( votrpss_terminal_intf )
310static GENERIC_TERMINAL_INTERFACE( terminal_intf )
178311{
179   DEVCB_DRIVER_MEMBER(votrpss_state, votrpss_kbd_put)
312   DEVCB_DRIVER_MEMBER(votrpss_state, kbd_put)
180313};
181314
315TIMER_DEVICE_CALLBACK_MEMBER( votrpss_state::serial_tick )
316{
317   m_uart->receive_clock();
318   m_uart->transmit_clock();
319}
320
182321/******************************************************************************
183322 Machine Drivers
184323******************************************************************************/
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188327   MCFG_CPU_ADD("maincpu", Z80, XTAL_8MHz/2)  /* 4.000 MHz, verified */
189328   MCFG_CPU_PROGRAM_MAP(votrpss_mem)
190329   MCFG_CPU_IO_MAP(votrpss_io)
191   //MCFG_QUANTUM_TIME(attotime::from_hz(60))
192330
193331   /* video hardware */
194332   //MCFG_DEFAULT_LAYOUT(layout_votrpss)
195333
196334   /* sound hardware */
197   //MCFG_SPEAKER_STANDARD_MONO("mono")
198   //MCFG_SOUND_ADD("ay1", AY8910, XTAL_8MHz/4) /* 2.000 MHz, verified */
199   //MCFG_SOUND_CONFIG(ay8910_config)
200   //MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
201   //votrax goes here too
335   MCFG_SPEAKER_STANDARD_MONO("mono")
336   MCFG_SOUND_ADD("ay", AY8910, XTAL_8MHz/4) /* 2.000 MHz, verified */
337   MCFG_SOUND_CONFIG(ay8910_intf)
338   MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
339   MCFG_VOTRAX_SC01_ADD("votrax", 1700000, votrax_interface ) /* 1.70 MHz? needs verify */
340   MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
202341
203   /* printer */
204   //MCFG_PRINTER_ADD("printer")
342   /* Devices */
343   MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf)
344   MCFG_I8251_ADD("uart", uart_intf)
345   MCFG_PIT8253_ADD( "pit", pit_intf)
346   MCFG_I8255_ADD("ppi", ppi_intf)
347   MCFG_TIMER_DRIVER_ADD_PERIODIC("irq_timer", votrpss_state, irq_timer, attotime::from_msec(10))
205348
206   MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, votrpss_terminal_intf)
349   /* Serial components - comment out if not needed */
350   //MCFG_TIMER_DRIVER_ADD_PERIODIC("serial", votrpss_state, serial_tick, attotime::from_hz(153600))
351   //MCFG_RS232_PORT_ADD("rs232", rs232_intf, default_rs232_devices, "serial_terminal")
207352MACHINE_CONFIG_END
208353
209354

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