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r17467 Saturday 25th August, 2012 at 16:23:58 UTC by Angelo Salese
Written a preliminary S-3520CF RTC chip device, used by Nintendo Super System [Angelo Salese]
[src/emu]emu.mak
[src/emu/machine]s3520cf.c* s3520cf.h*
[src/emu/video]m50458.c m50458.h
[src/mame/drivers]nss.c
[src/mame/etc]template_device.c

trunk/src/mame/etc/template_device.c
r17466r17467
1414//**************************************************************************
1515
1616// device type definition
17const device_type xxx = &device_creator<xxx_device>;
17const device_type XXX = &device_creator<xxx_device>;
1818
1919
2020//**************************************************************************
r17466r17467
2626//-------------------------------------------------
2727
2828xxx_device::xxx_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
29   : device_t(mconfig, xxx, "xxx", tag, owner, clock)
29   : device_t(mconfig, XXX, "xxx", tag, owner, clock)
3030{
3131
3232}
trunk/src/mame/drivers/nss.c
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296296#include "emu.h"
297297#include "cpu/z80/z80.h"
298298#include "machine/eeprom.h"
299#include "machine/s3520cf.h"
299300#include "video/m50458.h"
300301#include "includes/snes.h"
301302#include "rendlay.h"
r17466r17467
306307public:
307308   nss_state(const machine_config &mconfig, device_type type, const char *tag)
308309      : snes_state(mconfig, type, tag),
309      m_m50458(*this,"m50458")
310      m_m50458(*this,"m50458"),
311      m_s3520cf(*this, "s3520cf")
310312      { }
311313
312314   required_device<m50458_device> m_m50458;
315   required_device<s3520cf_device> m_s3520cf;
313316   UINT8 m_wram_wp_flag;
314317   UINT8 *m_wram;
315318   UINT8 m_nmi_enable;
r17466r17467
540543   ---- --x-  RTC Direction     (0=Low=Write,  1=High=Read)
541544   ---- ---x  RTC /CS           (0=Low/Select, 1=High/No)
542545*/
543   /* TODO */
546//   printf("%02x\n",data & 0xf);
544547   ioport("RTC_OSD")->write(data, 0xff);
545548}
546549
r17466r17467
550553   AM_RANGE(0x00, 0x00) AM_READ(port_00_r) AM_WRITE(port_00_w)
551554   AM_RANGE(0x01, 0x01) AM_READ_PORT("FP")
552555   AM_RANGE(0x02, 0x02) AM_READ_PORT("SYSTEM") AM_WRITE(rtc_osd_w)
556   AM_RANGE(0x03, 0x03) AM_READ_PORT("RTC")
553557
554558   AM_RANGE(0x72, 0x72) AM_WRITE(rtc_osd_w)
555559   AM_RANGE(0x80, 0x80) AM_WRITE(port_00_w)
r17466r17467
608612   PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_OUTPUT ) PORT_WRITE_LINE_DEVICE_MEMBER("eeprom", eeprom_device, set_cs_line)
609613
610614   PORT_START("RTC_OSD")
611   PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_OUTPUT ) PORT_WRITE_LINE_DEVICE_MEMBER("m50458", m50458_device, set_clock_line)
615   PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_OUTPUT ) PORT_WRITE_LINE_DEVICE_MEMBER("m50458", m50458_device, set_clock_line)
612616   PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_OUTPUT ) PORT_WRITE_LINE_DEVICE_MEMBER("m50458", m50458_device, write_bit)
613617   PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_OUTPUT ) PORT_WRITE_LINE_DEVICE_MEMBER("m50458", m50458_device, set_cs_line)
618   PORT_BIT( 0x08, IP_ACTIVE_LOW,  IPT_OUTPUT ) PORT_WRITE_LINE_DEVICE_MEMBER("s3520cf", s3520cf_device, set_clock_line)
619   PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_OUTPUT ) PORT_WRITE_LINE_DEVICE_MEMBER("s3520cf", s3520cf_device, write_bit)
620   PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_OUTPUT ) PORT_WRITE_LINE_DEVICE_MEMBER("s3520cf", s3520cf_device, set_dir_line)
621   PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_OUTPUT ) PORT_WRITE_LINE_DEVICE_MEMBER("s3520cf", s3520cf_device, set_cs_line)
614622
623   PORT_START("RTC")
624   PORT_BIT( 0xfe, IP_ACTIVE_HIGH, IPT_UNKNOWN )
625   PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_READ_LINE_DEVICE_MEMBER("s3520cf", s3520cf_device, read_bit)
626
615627   PORT_START("SERIAL1_DATA1_L")
616628   PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_NAME("P1 Button A") PORT_PLAYER(1)
617629   PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_BUTTON4 ) PORT_NAME("P1 Button X") PORT_PLAYER(1)
r17466r17467
771783   MCFG_CPU_IO_MAP(bios_io_map)
772784   MCFG_CPU_VBLANK_INT("screen", nss_vblank_irq)
773785
786   MCFG_M50458_ADD("m50458",4000000) /* TODO: clock */
787   MCFG_S3520CF_ADD("s3520cf") /* RTC */
788
774789   /* TODO: the screen should actually superimpose, but for the time being let's just separate outputs for now */
775790   MCFG_DEFAULT_LAYOUT(layout_dualhsxs)
776791
r17466r17467
783798
784799   MCFG_EEPROM_ADD("eeprom", nss_eeprom_intf)
785800
786   MCFG_M50458_ADD("m50458",4000000) /* TODO: clock */
787
788801   MCFG_MACHINE_START( nss )
789802MACHINE_CONFIG_END
790803
trunk/src/emu/video/m50458.c
r17466r17467
22
33Mitsubishi M50458 OSD chip
44
5preliminary device by Angelo Salese
6
57***************************************************************************/
68
79#include "emu.h"
r17466r17467
1921static ADDRESS_MAP_START( m50458_vram, AS_0, 16, m50458_device )
2022   AM_RANGE(0x0000, 0x023f) AM_RAM // vram
2123   AM_RANGE(0x0240, 0x0241) AM_WRITE(vreg_120_w)
24   AM_RANGE(0x024c, 0x024d) AM_WRITE(vreg_126_w)
2225   AM_RANGE(0x024e, 0x024f) AM_WRITE(vreg_127_w)
2326ADDRESS_MAP_END
2427
r17466r17467
3033
3134WRITE16_MEMBER( m50458_device::vreg_120_w)
3235{
36   // ...
3337}
3438
39WRITE16_MEMBER( m50458_device::vreg_126_w)
40{
41   // ...
42}
43
44
3545WRITE16_MEMBER( m50458_device::vreg_127_w)
3646{
3747   if(data & 0x20) // RAMERS, display RAM is erased
trunk/src/emu/video/m50458.h
r17466r17467
2929   OSD_SET_DATA
3030} m50458_state_t;
3131
32typedef struct
33{
34   UINT8 r,g,b;
35} m50458_bg_t;
36
3732// ======================> m50458_device
3833
3934class m50458_device :   public device_t,
r17466r17467
4843   WRITE_LINE_MEMBER( set_cs_line );
4944   WRITE_LINE_MEMBER( set_clock_line );
5045   DECLARE_WRITE16_MEMBER(vreg_120_w);
46   DECLARE_WRITE16_MEMBER(vreg_126_w);
5147   DECLARE_WRITE16_MEMBER(vreg_127_w);
5248
5349   UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
r17466r17467
6662   UINT16 m_current_cmd;
6763   int m_cmd_stream_pos;
6864   UINT16 m_osd_addr;
65   UINT8 m_bg_pen;
6966
7067   m50458_state_t m_osd_state;
71   m50458_bg_t m_m50458_bg;
7268
7369private:
7470   inline UINT16 read_word(offs_t address);
trunk/src/emu/emu.mak
r17466r17467
242242   $(EMUMACHINE)/s3c2400.o      \
243243   $(EMUMACHINE)/s3c2410.o      \
244244   $(EMUMACHINE)/s3c2440.o      \
245   $(EMUMACHINE)/s3520cf.o      \
245246   $(EMUMACHINE)/scsi.o      \
246247   $(EMUMACHINE)/scsicd.o      \
247248   $(EMUMACHINE)/scsidev.o      \
trunk/src/emu/machine/s3520cf.c
r0r17467
1/***************************************************************************
2
3Seiko/Epson S-3520CF
4
5preliminary device by Angelo Salese
6
7TODO:
8- kludge on address?
9
10***************************************************************************/
11
12#include "emu.h"
13#include "machine/s3520cf.h"
14
15
16
17//**************************************************************************
18//  GLOBAL VARIABLES
19//**************************************************************************
20
21// device type definition
22const device_type S3520CF = &device_creator<s3520cf_device>;
23
24
25//**************************************************************************
26//  LIVE DEVICE
27//**************************************************************************
28
29//-------------------------------------------------
30//  s3520cf_device - constructor
31//-------------------------------------------------
32
33s3520cf_device::s3520cf_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
34   : device_t(mconfig, S3520CF, "s3520cf", tag, owner, clock)
35{
36
37}
38
39
40//-------------------------------------------------
41//  device_validity_check - perform validity checks
42//  on this device
43//-------------------------------------------------
44
45void s3520cf_device::device_validity_check(validity_checker &valid) const
46{
47}
48
49
50//-------------------------------------------------
51//  device_start - device-specific startup
52//-------------------------------------------------
53
54void s3520cf_device::device_start()
55{
56
57}
58
59
60//-------------------------------------------------
61//  device_reset - device-specific reset
62//-------------------------------------------------
63
64void s3520cf_device::device_reset()
65{
66}
67
68//-------------------------------------------------
69//  rtc_read - used to route RTC reading registers
70//-------------------------------------------------
71
72inline UINT8 s3520cf_device::rtc_read(UINT8 offset)
73{
74   UINT8 res;
75
76   res = 0;
77
78   switch(offset)
79   {
80//      case 0: // 1 sec
81//      case 1: // 10 sec
82//      case 2: // 1 min
83//      case 3: // 10 min
84//      case 6: // week
85//      case 7: // 1 day
86      case 4: // 1 hour
87         res = 1;
88         break;
89      case 5: // 10 hour
90         res = 2;
91         break;
92   }
93
94
95
96   return res;
97}
98
99inline void s3520cf_device::rtc_write(UINT8 offset,UINT8 data)
100{
101
102}
103
104
105//**************************************************************************
106//  READ/WRITE HANDLERS
107//**************************************************************************
108
109READ_LINE_MEMBER( s3520cf_device::read_bit )
110{
111   return m_read_latch;
112}
113
114WRITE_LINE_MEMBER( s3520cf_device::set_dir_line )
115{
116   //printf("%d DIR LINE\n",state);
117
118   m_dir = state;
119}
120
121WRITE_LINE_MEMBER( s3520cf_device::set_cs_line )
122{
123   m_reset_line = state;
124
125   //printf("%d CS LINE\n",state);
126
127   if(m_reset_line != CLEAR_LINE)
128   {
129      //printf("Reset asserted\n");
130      m_current_cmd = 0;
131      m_cmd_stream_pos = 0;
132      m_rtc_state = RTC_SET_ADDRESS;
133      //m_latch = 0;
134   }
135}
136
137WRITE_LINE_MEMBER( s3520cf_device::write_bit )
138{
139   m_latch = state;
140//   printf("%d LATCH LINE\n",state);
141}
142
143WRITE_LINE_MEMBER( s3520cf_device::set_clock_line )
144{
145   if(state == 1 && m_reset_line == CLEAR_LINE)
146   {
147      //printf("%d %d\n",m_latch, m_dir);
148
149      switch(m_rtc_state)
150      {
151         case RTC_SET_ADDRESS:
152            m_current_cmd = (m_current_cmd >> 1) | ((m_latch<<3)&8);
153            m_cmd_stream_pos++;
154
155            if(m_cmd_stream_pos == 4)
156            {
157               m_rtc_addr = (m_current_cmd + 1) & 0xf; /* TODO: +1??? */
158               m_rtc_state = RTC_SET_DATA;
159               m_cmd_stream_pos = 0;
160               m_current_cmd = 0;
161            }
162            break;
163         case RTC_SET_DATA:
164            if(m_dir == 1) // READ
165            {
166               //if(m_cmd_stream_pos == 0)
167               {
168                  //printf("%02x %d\n",m_rtc_addr,m_cmd_stream_pos);
169               }
170               m_read_latch = (rtc_read(m_rtc_addr) >> (m_cmd_stream_pos)) & 1;
171            }
172
173            m_current_cmd = (m_current_cmd >> 1) | ((m_latch<<3)&8);
174            m_cmd_stream_pos++;
175            if(m_cmd_stream_pos == 4)
176            {
177               if(m_dir == 0) // WRITE
178               {
179                  printf("%02x %02x\n",m_rtc_addr,m_current_cmd);
180                  rtc_write(m_rtc_addr,m_current_cmd);
181               }
182
183               m_rtc_addr = m_current_cmd;
184               m_rtc_state = RTC_SET_ADDRESS;
185               m_cmd_stream_pos = 0;
186               m_current_cmd = 0;
187            }
188            break;
189      }
190   }
191}
trunk/src/emu/machine/s3520cf.h
r0r17467
1/***************************************************************************
2
3Template for skeleton device
4
5***************************************************************************/
6
7#pragma once
8
9#ifndef __S3520CFDEV_H__
10#define __S3520CFDEV_H__
11
12
13
14//**************************************************************************
15//  INTERFACE CONFIGURATION MACROS
16//**************************************************************************
17
18#define MCFG_S3520CF_ADD(_tag) \
19   MCFG_DEVICE_ADD(_tag, S3520CF, XTAL_32_768kHz) \
20
21
22//**************************************************************************
23//  TYPE DEFINITIONS
24//**************************************************************************
25
26typedef enum
27{
28   RTC_SET_ADDRESS = 0,
29   RTC_SET_DATA
30} s3520cf_state_t;
31
32
33// ======================> s3520cf_device
34
35class s3520cf_device :   public device_t
36{
37public:
38   // construction/destruction
39   s3520cf_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
40
41   // I/O operations
42   READ_LINE_MEMBER( read_bit );
43   WRITE_LINE_MEMBER( set_dir_line );
44   WRITE_LINE_MEMBER( set_cs_line );
45   WRITE_LINE_MEMBER( set_clock_line );
46   WRITE_LINE_MEMBER( write_bit );
47
48protected:
49   // device-level overrides
50   virtual void device_validity_check(validity_checker &valid) const;
51   virtual void device_start();
52   virtual void device_reset();
53   inline UINT8 rtc_read(UINT8 offset);
54   inline void rtc_write(UINT8 offset,UINT8 data);
55
56   int m_dir;
57   int m_latch;
58   int m_reset_line;
59   int m_read_latch;
60   UINT8 m_current_cmd;
61   UINT8 m_cmd_stream_pos;
62   UINT8 m_rtc_addr;
63
64   s3520cf_state_t m_rtc_state;
65
66};
67
68
69// device type definition
70extern const device_type S3520CF;
71
72
73
74//**************************************************************************
75//  GLOBAL VARIABLES
76//**************************************************************************
77
78
79
80#endif

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