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r20434 Thursday 24th January, 2013 at 15:08:37 UTC by Curt Coder
(MESS) abc80: Use ASCII keyboard. (nw)
[src/mess/drivers]abc80.c
[src/mess/includes]abc80.h

trunk/src/mess/includes/abc80.h
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1717#include "machine/abcbus.h"
1818#include "machine/abc80kb.h"
1919#include "machine/abc830.h"
20#include "machine/keyboard.h"
2021#include "machine/ram.h"
2122#include "machine/serial.h"
2223#include "machine/z80pio.h"
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9394      TIMER_ID_BLINK,
9495      TIMER_ID_VSYNC_ON,
9596      TIMER_ID_VSYNC_OFF,
96      TIMER_ID_FAKE_KEYBOARD_SCAN,
9797      TIMER_ID_FAKE_KEYBOARD_CLEAR
9898   };
9999
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106106
107107   void update_screen(bitmap_rgb32 &bitmap, const rectangle &cliprect);
108108
109   void scan_keyboard();
110
111109   DECLARE_READ8_MEMBER( read );
112110   DECLARE_WRITE8_MEMBER( write );
113111
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118116   DECLARE_WRITE8_MEMBER( pio_pb_w );
119117
120118   DECLARE_WRITE_LINE_MEMBER( keydown_w );
119   DECLARE_WRITE8_MEMBER( kbd_w );
121120
122121   // keyboard state
123122   int m_key_data;
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146145   emu_timer *m_blink_timer;
147146   emu_timer *m_vsync_on_timer;
148147   emu_timer *m_vsync_off_timer;
149   emu_timer *m_kb_timer;
150148};
151149
152150//----------- defined in video/abc80.c -----------
trunk/src/mess/drivers/abc80.c
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9191
9292
9393//**************************************************************************
94//  KEYBOARD HACK
95//**************************************************************************
96
97static INPUT_PORTS_START( fake_keyboard )
98   PORT_START("ROW0")
99   PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
100   PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
101   PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
102   PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("4 \xC2\xA4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR(0x00A4)
103   PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
104   PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
105   PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('/')
106   PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
107
108   PORT_START("ROW1")
109   PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
110   PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('=')
111   PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('+') PORT_CHAR('?')
112   PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR(0x00E9) PORT_CHAR(0x00C9)
113   PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('<') PORT_CHAR('>')
114   PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
115   PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
116   PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
117
118   PORT_START("ROW2")
119   PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
120   PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
121   PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
122   PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
123   PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
124   PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
125   PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
126   PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR(0x00E5) PORT_CHAR(0x00C5)
127
128   PORT_START("ROW3")
129   PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(0x00FC) PORT_CHAR(0x00DC)
130   PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_CHAR('\r')
131   PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
132   PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
133   PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
134   PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
135   PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
136   PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
137
138   PORT_START("ROW4")
139   PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
140   PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
141   PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
142   PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(0x00F6) PORT_CHAR(0x00D6)
143   PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(0x00E4) PORT_CHAR(0x00C4)
144   PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\'') PORT_CHAR('*')
145   PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(UTF8_LEFT) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
146   PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
147
148   PORT_START("ROW5")
149   PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
150   PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
151   PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
152   PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
153   PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
154   PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
155   PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR(';')
156   PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR(':')
157
158   PORT_START("ROW6")
159   PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('-') PORT_CHAR('_')
160   PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(UTF8_RIGHT) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
161   PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
162   PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
163   PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
164   PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
165   PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNUSED )
166   PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
167
168   PORT_START("ROW7")
169   PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("LEFT SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
170   PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("RIGHT SHIFT") PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
171   PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("UPPER CASE") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) PORT_TOGGLE
172   PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL))
173   PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
174   PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
175   PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNUSED )
176   PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
177INPUT_PORTS_END
178
179static const UINT8 abc80_keycodes[7*4][8] =
180{
181   /* unshifted */
182   { 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38 },
183   { 0x39, 0x30, 0x2B, 0x60, 0x3C, 0x71, 0x77, 0x65 },
184   { 0x72, 0x74, 0x79, 0x75, 0x69, 0x6F, 0x70, 0x7D },
185   { 0x7E, 0x0D, 0x61, 0x73, 0x64, 0x66, 0x67, 0x68 },
186   { 0x6A, 0x6B, 0x6C, 0x7C, 0x7B, 0x27, 0x08, 0x7A },
187   { 0x78, 0x63, 0x76, 0x62, 0x6E, 0x6D, 0x2C, 0x2E },
188   { 0x2D, 0x09, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00 },
189
190   /* shift */
191   { 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x2f, 0x28 },
192   { 0x29, 0x3d, 0x3f, 0x40, 0x3e, 0x51, 0x57, 0x45 },
193   { 0x52, 0x54, 0x59, 0x55, 0x49, 0x4f, 0x50, 0x5d },
194   { 0x5e, 0x0d, 0x41, 0x53, 0x44, 0x46, 0x47, 0x48 },
195   { 0x4a, 0x4b, 0x4c, 0x5c, 0x5b, 0x2a, 0x08, 0x5a },
196   { 0x58, 0x43, 0x56, 0x42, 0x4e, 0x4d, 0x3b, 0x3a },
197   { 0x5f, 0x09, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00 },
198
199   /* control */
200   { 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38 },
201   { 0x39, 0x30, 0x2b, 0x00, 0x7f, 0x11, 0x17, 0x05 },
202   { 0x12, 0x14, 0x19, 0x15, 0x09, 0x0f, 0x10, 0x1d },
203   { 0x1e, 0x0d, 0x01, 0x13, 0x04, 0x06, 0x07, 0x08 },
204   { 0x0a, 0x0b, 0x0c, 0x1c, 0x1b, 0x27, 0x08, 0x1a },
205   { 0x18, 0x03, 0x16, 0x02, 0x0e, 0x0d, 0x2c, 0x2e },
206   { 0x2d, 0x09, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00 },
207
208   /* control-shift */
209   { 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x2f, 0x28 },
210   { 0x29, 0x3d, 0x3f, 0x00, 0x7f, 0x11, 0x17, 0x05 },
211   { 0x12, 0x14, 0x19, 0x15, 0x09, 0x1f, 0x00, 0x1d },
212   { 0x1e, 0x0d, 0x01, 0x13, 0x04, 0x06, 0x07, 0x08 },
213   { 0x0a, 0x1b, 0x1c, 0x1c, 0x1b, 0x2a, 0x08, 0x1a },
214   { 0x18, 0x03, 0x16, 0x02, 0x1e, 0x1d, 0x3b, 0x3a },
215   { 0x5f, 0x09, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00 }
216};
217
218void abc80_state::scan_keyboard()
219{
220   static const char *const keynames[] = { "ROW0", "ROW1", "ROW2", "ROW3", "ROW4", "ROW5", "ROW6" };
221   int table = 0, row, col;
222
223   if (ioport("ROW7")->read() & 0x07)
224   {
225      /* shift, upper case */
226      table |= 0x01;
227   }
228
229   if (ioport("ROW7")->read() & 0x08)
230   {
231      /* ctrl */
232      table |= 0x02;
233   }
234
235   /* clear key strobe */
236   m_key_strobe = 0;
237
238   /* scan keyboard */
239   for (row = 0; row < 7; row++)
240   {
241      UINT8 data = ioport(keynames[row])->read();
242
243      for (col = 0; col < 8; col++)
244      {
245         if (BIT(data, col))
246         {
247            UINT8 keydata = abc80_keycodes[row + (table * 7)][col];
248
249            /* set key strobe */
250            m_key_strobe = 1;
251
252            if (m_key_data != keydata)
253            {
254               UINT8 pio_data = 0x80 | keydata;
255
256               /* latch key data */
257               m_key_data = keydata;
258
259               m_pio->port_a_write(pio_data);
260               return;
261            }
262         }
263      }
264   }
265
266   if (!m_key_strobe && m_key_data)
267   {
268      m_pio->port_a_write(m_key_data);
269
270      timer_set(attotime::from_msec(50), TIMER_ID_FAKE_KEYBOARD_CLEAR);
271   }
272}
273
274
275
276//**************************************************************************
27794//  MEMORY MANAGEMENT
27895//**************************************************************************
27996
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389206//-------------------------------------------------
390207
391208static INPUT_PORTS_START( abc80 )
392   PORT_INCLUDE(fake_keyboard)
393
394209   PORT_START("SW1")
395210   PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) )
396211   PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
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655470   DEVCB_DRIVER_LINE_MEMBER(abc80_state, keydown_w)
656471};
657472
473WRITE8_MEMBER( abc80_state::kbd_w )
474{
475   m_key_data = data;
476   m_key_strobe = 1;
658477
478   UINT8 pio_data = 0x80 | data;
479   m_pio->port_a_write(pio_data);
480
481   timer_set(attotime::from_msec(50), TIMER_ID_FAKE_KEYBOARD_CLEAR);
482}
483
484static ASCII_KEYBOARD_INTERFACE( keyboard_intf )
485{
486   DEVCB_DRIVER_MEMBER(abc80_state, kbd_w)
487};
488
489
659490//-------------------------------------------------
660491//  ABCBUS_INTERFACE( abcbus_intf )
661492//-------------------------------------------------
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734565      m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE);
735566      break;
736567
737   case TIMER_ID_FAKE_KEYBOARD_SCAN:
738      scan_keyboard();
739      break;
740
741568   case TIMER_ID_FAKE_KEYBOARD_CLEAR:
569      m_pio->port_a_write(m_key_data);
570      m_key_strobe = 0;
742571      m_key_data = 0;
743572      break;
744573   }
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756585   m_cassette_timer->adjust(attotime::from_hz(44100), 0, attotime::from_hz(44100));
757586   m_cassette_timer->enable(false);
758587
759   m_kb_timer = timer_alloc(TIMER_ID_FAKE_KEYBOARD_SCAN);
760   m_kb_timer->adjust(attotime::from_usec(2500), 0, attotime::from_usec(2500));
761
762588   // find memory regions
763589   m_mmu_rom = memregion("mmu")->base();
764590
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802628   MCFG_ABC80_KEYBOARD_ADD(kb_intf)
803629   MCFG_ABCBUS_SLOT_ADD(ABCBUS_TAG, abcbus_intf, abcbus_cards, "slow", abc830_slow)
804630   MCFG_RS232_PORT_ADD(RS232_TAG, rs232_intf, rs232_devices, NULL, NULL)
631   MCFG_ASCII_KEYBOARD_ADD(KEYBOARD_TAG, keyboard_intf)
805632
806633   // internal ram
807634   MCFG_RAM_ADD(RAM_TAG)

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