trunk/src/mess/drivers/dvk_kcgd.c
| r0 | r249062 | |
|---|
| 1 | /*************************************************************************** |
| 2 | |
| 3 | KCGD (Kontroller Cvetnogo Graficheskogo Displeya = Colour Graphics |
| 4 | Display Controller), a replacement for KSM (dvk_ksm.c) in later |
| 5 | models of DVK desktops. |
| 6 | |
| 7 | MPI (Q-Bus clone) board. Interfaces with MS7004 (DEC LK201 workalike) |
| 8 | keyboard, mouse, and monochrome or color CRT. |
| 9 | |
| 10 | To do: |
| 11 | - K1801VM2 CPU core (interrupts and EVNT pin, full EIS set, other insns) |
| 12 | - Everything else :-) |
| 13 | |
| 14 | ****************************************************************************/ |
| 15 | |
| 16 | #include "emu.h" |
| 17 | |
| 18 | #include "bus/rs232/rs232.h" |
| 19 | #include "cpu/t11/t11.h" |
| 20 | #include "machine/clock.h" |
| 21 | #include "machine/ms7004.h" |
| 22 | |
| 23 | #define KCGD_TOTAL_HORZ 1000 // XXX verify |
| 24 | #define KCGD_DISP_HORZ 800 |
| 25 | #define KCGD_HORZ_START 200 // XXX verify |
| 26 | |
| 27 | #define KCGD_TOTAL_VERT 600 // XXX verify |
| 28 | #define KCGD_DISP_VERT 480 |
| 29 | #define KCGD_VERT_START 100 // XXX verify |
| 30 | |
| 31 | #define KCGD_STATUS_PAGE 0 |
| 32 | #define KCGD_STATUS_INTERLACE 1 |
| 33 | #define KCGD_STATUS_TIMER_INT 5 |
| 34 | #define KCGD_STATUS_MODE_INT 6 |
| 35 | #define KCGD_STATUS_MODE_LAST 7 |
| 36 | #define KCGD_STATUS_TIMER_VAL 15 |
| 37 | |
| 38 | #define KCGD_PAGE_0 015574 |
| 39 | #define KCGD_PAGE_1 005574 |
| 40 | |
| 41 | #define VERBOSE_DBG 1 /* general debug messages */ |
| 42 | |
| 43 | #define DBG_LOG(N,M,A) \ |
| 44 | do { \ |
| 45 | if(VERBOSE_DBG>=N) \ |
| 46 | { \ |
| 47 | if( M ) \ |
| 48 | logerror("%11.6f at %s: %-24s",machine().time().as_double(),machine().describe_context(),(char*)M ); \ |
| 49 | logerror A; \ |
| 50 | } \ |
| 51 | } while (0) |
| 52 | |
| 53 | |
| 54 | class kcgd_state : public driver_device |
| 55 | { |
| 56 | public: |
| 57 | kcgd_state(const machine_config &mconfig, device_type type, const char *tag) : |
| 58 | driver_device(mconfig, type, tag), |
| 59 | m_maincpu(*this, "maincpu"), |
| 60 | // m_ms7004(*this, "ms7004"), |
| 61 | m_palette(*this, "palette"), |
| 62 | m_screen(*this, "screen") |
| 63 | { } |
| 64 | |
| 65 | virtual void machine_reset(); |
| 66 | virtual void video_start(); |
| 67 | UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); |
| 68 | TIMER_DEVICE_CALLBACK_MEMBER(scanline_callback); |
| 69 | DECLARE_PALETTE_INIT(kcgd); |
| 70 | |
| 71 | enum |
| 72 | { |
| 73 | TIMER_ID_VSYNC_ON, |
| 74 | TIMER_ID_VSYNC_OFF, |
| 75 | TIMER_ID_500HZ |
| 76 | }; |
| 77 | virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); |
| 78 | |
| 79 | DECLARE_WRITE_LINE_MEMBER(write_keyboard_clock); |
| 80 | DECLARE_WRITE_LINE_MEMBER(write_line_clock); |
| 81 | |
| 82 | DECLARE_READ16_MEMBER(vram_addr_r); |
| 83 | DECLARE_READ16_MEMBER(vram_data_r); |
| 84 | DECLARE_READ16_MEMBER(vram_mmap_r); |
| 85 | DECLARE_WRITE16_MEMBER(vram_addr_w); |
| 86 | DECLARE_WRITE16_MEMBER(vram_data_w); |
| 87 | DECLARE_WRITE16_MEMBER(vram_mmap_w); |
| 88 | DECLARE_READ16_MEMBER(status_r); |
| 89 | DECLARE_WRITE16_MEMBER(status_w); |
| 90 | DECLARE_READ8_MEMBER(palette_index_r); |
| 91 | DECLARE_READ8_MEMBER(palette_data_r); |
| 92 | DECLARE_WRITE8_MEMBER(palette_index_w); |
| 93 | DECLARE_WRITE8_MEMBER(palette_data_w); |
| 94 | |
| 95 | emu_timer *m_vsync_on_timer; |
| 96 | emu_timer *m_vsync_off_timer; |
| 97 | emu_timer *m_500hz_timer; |
| 98 | |
| 99 | private: |
| 100 | void draw_scanline(UINT16 *p, UINT16 offset); |
| 101 | rectangle m_tmpclip; |
| 102 | bitmap_ind16 m_tmpbmp; |
| 103 | |
| 104 | struct { |
| 105 | UINT16 status; // 167770 |
| 106 | UINT8 control; // 167772 |
| 107 | int palette_index, vram_addr; |
| 108 | UINT8 palette[16]; |
| 109 | } m_video; |
| 110 | UINT32 *m_videoram; |
| 111 | |
| 112 | protected: |
| 113 | required_device<cpu_device> m_maincpu; |
| 114 | // required_device<ms7004_device> m_ms7004; |
| 115 | required_device<palette_device> m_palette; |
| 116 | required_device<screen_device> m_screen; |
| 117 | }; |
| 118 | |
| 119 | static ADDRESS_MAP_START( kcgd_mem, AS_PROGRAM, 16, kcgd_state ) |
| 120 | ADDRESS_MAP_UNMAP_HIGH |
| 121 | AM_RANGE (0000000, 0077777) AM_READWRITE(vram_mmap_r, vram_mmap_w) |
| 122 | AM_RANGE (0100000, 0157777) AM_ROM |
| 123 | AM_RANGE (0160000, 0160001) AM_MIRROR(03774) AM_READWRITE(vram_addr_r, vram_addr_w) |
| 124 | AM_RANGE (0160002, 0160003) AM_MIRROR(03774) AM_READWRITE(vram_data_r, vram_data_w) |
| 125 | AM_RANGE (0167770, 0167771) AM_READWRITE(status_r, status_w) |
| 126 | AM_RANGE (0167772, 0167773) AM_READWRITE8(palette_index_r, palette_index_w, 0x00ff) // reads always return 0 |
| 127 | AM_RANGE (0167772, 0167773) AM_READWRITE8(palette_data_r, palette_data_w, 0xff00) |
| 128 | // AM_RANGE (0176560, 0176567) AM_RAM // USART2 -- host |
| 129 | // AM_RANGE (0177560, 0177567) AM_RAM // USART3 -- keyboard |
| 130 | ADDRESS_MAP_END |
| 131 | |
| 132 | void kcgd_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) |
| 133 | { |
| 134 | switch (id) |
| 135 | { |
| 136 | /* |
| 137 | case TIMER_ID_VSYNC_ON: |
| 138 | m_maincpu->set_input_line(INPUT_LINE_EVNT, ASSERT_LINE); |
| 139 | break; |
| 140 | |
| 141 | case TIMER_ID_VSYNC_OFF: |
| 142 | m_maincpu->set_input_line(INPUT_LINE_EVNT, CLEAR_LINE); |
| 143 | break; |
| 144 | */ |
| 145 | case TIMER_ID_500HZ: |
| 146 | m_video.status ^= (1 << KCGD_STATUS_TIMER_VAL); |
| 147 | break; |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | void kcgd_state::machine_reset() |
| 152 | { |
| 153 | memset(&m_video, 0, sizeof(m_video)); |
| 154 | } |
| 155 | |
| 156 | void kcgd_state::video_start() |
| 157 | { |
| 158 | // screen_device *screen = machine().device<screen_device>("screen"); |
| 159 | |
| 160 | // 64 kwords, word size is 17 bits |
| 161 | m_videoram = auto_alloc_array(machine(), UINT32, 65536); |
| 162 | |
| 163 | m_tmpclip = rectangle(0, KCGD_DISP_HORZ-1, 0, KCGD_DISP_VERT-1); |
| 164 | m_tmpbmp.allocate(KCGD_DISP_HORZ, KCGD_DISP_VERT); |
| 165 | /* |
| 166 | m_vsync_on_timer = timer_alloc(TIMER_ID_VSYNC_ON); |
| 167 | m_vsync_on_timer->adjust(screen->time_until_pos(0, 0), 0, screen->frame_period()); |
| 168 | |
| 169 | m_vsync_off_timer = timer_alloc(TIMER_ID_VSYNC_OFF); |
| 170 | m_vsync_off_timer->adjust(screen->time_until_pos(16, 0), 0, screen->frame_period()); |
| 171 | */ |
| 172 | m_500hz_timer = timer_alloc(TIMER_ID_500HZ); |
| 173 | m_500hz_timer->adjust(attotime::from_hz(500), 0, attotime::from_hz(500)); |
| 174 | } |
| 175 | |
| 176 | PALETTE_INIT_MEMBER(kcgd_state, kcgd) |
| 177 | { |
| 178 | for (int i = 0; i < 16; i++) |
| 179 | { |
| 180 | palette.set_pen_color(i, i?i:255, i?i:255, i?i:255); |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | /* |
| 185 | VRAM is 128K and is word-addressable, so address fits into 16 bits. |
| 186 | Low 32K of VRAM are not used to store pixel data -- XXX. |
| 187 | */ |
| 188 | WRITE16_MEMBER(kcgd_state::vram_addr_w) |
| 189 | { |
| 190 | DBG_LOG(3,"VRAM WA", ("%06o\n", data)); |
| 191 | m_video.vram_addr = data; |
| 192 | } |
| 193 | |
| 194 | READ16_MEMBER(kcgd_state::vram_addr_r) |
| 195 | { |
| 196 | DBG_LOG(3,"VRAM RA", ("\n")); |
| 197 | return m_video.vram_addr; |
| 198 | } |
| 199 | |
| 200 | WRITE16_MEMBER(kcgd_state::vram_data_w) |
| 201 | { |
| 202 | DBG_LOG(1,"VRAM W2", ("%06o <- %04XH\n", m_video.vram_addr, data)); |
| 203 | m_videoram[m_video.vram_addr] = data | (BIT(m_video.control, 7) << 16); |
| 204 | } |
| 205 | |
| 206 | READ16_MEMBER(kcgd_state::vram_data_r) |
| 207 | { |
| 208 | DBG_LOG(2,"VRAM R2", ("%06o\n", m_video.vram_addr)); |
| 209 | m_video.status = (m_video.status & 0xff7f) | (BIT(m_videoram[m_video.vram_addr], 16) << 7); |
| 210 | return (UINT16) (m_videoram[m_video.vram_addr] & 0xffff); |
| 211 | } |
| 212 | |
| 213 | WRITE16_MEMBER(kcgd_state::vram_mmap_w) |
| 214 | { |
| 215 | DBG_LOG(3,"VRAM W1", ("%06o <- %04XH\n", offset, data)); |
| 216 | m_videoram[offset] = data | (BIT(m_video.control, 7) << 16); |
| 217 | } |
| 218 | |
| 219 | READ16_MEMBER(kcgd_state::vram_mmap_r) |
| 220 | { |
| 221 | DBG_LOG(3,"VRAM R1", ("%06o\n", offset)); |
| 222 | return (UINT16) (m_videoram[offset] & 0xffff); |
| 223 | } |
| 224 | |
| 225 | WRITE16_MEMBER(kcgd_state::status_w) |
| 226 | { |
| 227 | DBG_LOG(1,"Status W", ("data %04XH (useful %02XH)\n", data, data & 0x63)); |
| 228 | // bits 7 and 15 are read-only |
| 229 | m_video.status = (m_video.status & 0x8080) | (data & 0x7f7f); |
| 230 | } |
| 231 | |
| 232 | READ16_MEMBER(kcgd_state::status_r) |
| 233 | { |
| 234 | UINT16 data = m_video.status ^ (BIT(m_video.control, 6) << 7); |
| 235 | DBG_LOG(1,"Status R", ("data %04X index %d\n", data, m_video.palette_index)); |
| 236 | return data; |
| 237 | } |
| 238 | |
| 239 | WRITE8_MEMBER(kcgd_state::palette_index_w) |
| 240 | { |
| 241 | m_video.control = data; |
| 242 | m_video.palette_index = ((data >> 2) & 15); |
| 243 | DBG_LOG(1,"Palette index, Control W", ("data %02XH index %d\n", data, m_video.palette_index)); |
| 244 | } |
| 245 | |
| 246 | WRITE8_MEMBER(kcgd_state::palette_data_w) |
| 247 | { |
| 248 | DBG_LOG(1,"Palette data W", ("data %02XH index %d\n", data, m_video.palette_index)); |
| 249 | m_video.palette[m_video.palette_index] = data; |
| 250 | m_palette->set_pen_color(m_video.palette_index, |
| 251 | 85*(data & 3), 85*((data >> 2) & 3), 85*((data >> 4) & 3)); |
| 252 | } |
| 253 | |
| 254 | READ8_MEMBER(kcgd_state::palette_index_r) |
| 255 | { |
| 256 | return 0; |
| 257 | } |
| 258 | |
| 259 | READ8_MEMBER(kcgd_state::palette_data_r) |
| 260 | { |
| 261 | DBG_LOG(1,"Palette data R", ("index %d\n", m_video.palette_index)); |
| 262 | return m_video.palette[m_video.palette_index]; |
| 263 | } |
| 264 | |
| 265 | /* |
| 266 | Raster sizes are: |
| 267 | - 800(400)x480 in hires(lores) 60 Hz interlaced mode |
| 268 | - 800(400)x240 in hires(lores) 30 Hz progressive mode |
| 269 | |
| 270 | Video memory is 17 bits wide (bit 16 indicates hi/lo res mode for each word, |
| 271 | host writes it separately (via bit 7 in 167772). |
| 272 | */ |
| 273 | |
| 274 | void kcgd_state::draw_scanline(UINT16 *p, UINT16 offset) |
| 275 | { |
| 276 | int i; |
| 277 | |
| 278 | for ( i = 0; i < 100; i++ ) |
| 279 | { |
| 280 | UINT32 data = m_videoram[ offset++ ]; |
| 281 | if (BIT(data, 16)) { |
| 282 | *p = ( data >> 12) & 0x0F; p++; |
| 283 | *p = ( data >> 12) & 0x0F; p++; |
| 284 | *p = ( data >> 8 ) & 0x0F; p++; |
| 285 | *p = ( data >> 8 ) & 0x0F; p++; |
| 286 | *p = ( data >> 4 ) & 0x0F; p++; |
| 287 | *p = ( data >> 4 ) & 0x0F; p++; |
| 288 | *p = data & 0x0F; p++; |
| 289 | *p = data & 0x0F; p++; |
| 290 | } else { |
| 291 | *p = 5*(( data >> 14) & 0x03); p++; |
| 292 | *p = 5*(( data >> 12) & 0x03); p++; |
| 293 | *p = 5*(( data >> 10) & 0x03); p++; |
| 294 | *p = 5*(( data >> 8 ) & 0x03); p++; |
| 295 | *p = 5*(( data >> 6 ) & 0x03); p++; |
| 296 | *p = 5*(( data >> 4 ) & 0x03); p++; |
| 297 | *p = 5*(( data >> 2 ) & 0x03); p++; |
| 298 | *p = 5*( data & 0x03); p++; |
| 299 | } |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | TIMER_DEVICE_CALLBACK_MEMBER(kcgd_state::scanline_callback) |
| 304 | { |
| 305 | UINT16 y = m_screen->vpos(), offset; |
| 306 | |
| 307 | if (y < KCGD_VERT_START) return; |
| 308 | y -= KCGD_VERT_START; |
| 309 | if (y >= KCGD_DISP_VERT) return; |
| 310 | |
| 311 | offset = BIT(m_video.status, KCGD_STATUS_PAGE) ? (KCGD_PAGE_1 >> 1) : (KCGD_PAGE_0 >> 1); |
| 312 | |
| 313 | DBG_LOG(2,"scanline_cb", ("frame %d y %.3d page %d offset %04X *offset %04X\n", |
| 314 | m_screen->frame_number(), BIT(m_video.status, KCGD_STATUS_PAGE), |
| 315 | y, offset + y, m_videoram[offset + y])); |
| 316 | |
| 317 | draw_scanline(&m_tmpbmp.pix16(y), m_videoram[offset + (KCGD_DISP_VERT-1) - y]); |
| 318 | } |
| 319 | |
| 320 | UINT32 kcgd_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) |
| 321 | { |
| 322 | copybitmap(bitmap, m_tmpbmp, 0, 0, KCGD_HORZ_START, KCGD_VERT_START, cliprect); |
| 323 | return 0; |
| 324 | } |
| 325 | |
| 326 | /* F4 Character Displayer */ |
| 327 | static const gfx_layout kcgd_charlayout = |
| 328 | { |
| 329 | 8, 10, /* 8x10 pixels */ |
| 330 | 256, /* 256 characters */ |
| 331 | 1, /* 1 bits per pixel */ |
| 332 | { 0 }, /* no bitplanes */ |
| 333 | /* x offsets */ |
| 334 | { 0, 1, 2, 3, 4, 5, 6, 7 }, |
| 335 | /* y offsets */ |
| 336 | { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8 }, |
| 337 | 8*10 /* every char takes 10 bytes */ |
| 338 | }; |
| 339 | |
| 340 | static GFXDECODE_START( kcgd ) |
| 341 | GFXDECODE_ENTRY("maincpu", 0112236, kcgd_charlayout, 0, 1) |
| 342 | GFXDECODE_END |
| 343 | |
| 344 | static MACHINE_CONFIG_START( kcgd, kcgd_state ) |
| 345 | MCFG_CPU_ADD("maincpu", K1801VM2, XTAL_30_8MHz/4) |
| 346 | MCFG_CPU_PROGRAM_MAP(kcgd_mem) |
| 347 | MCFG_T11_INITIAL_MODE(0100000) |
| 348 | |
| 349 | MCFG_TIMER_DRIVER_ADD_PERIODIC("scantimer", kcgd_state, scanline_callback, attotime::from_hz(50*28*11)) // XXX verify |
| 350 | MCFG_TIMER_START_DELAY(attotime::from_hz(XTAL_30_8MHz/KCGD_HORZ_START)) |
| 351 | |
| 352 | MCFG_SCREEN_ADD("screen", RASTER) |
| 353 | MCFG_SCREEN_UPDATE_DRIVER(kcgd_state, screen_update) |
| 354 | MCFG_SCREEN_RAW_PARAMS(XTAL_30_8MHz, KCGD_TOTAL_HORZ, KCGD_HORZ_START, |
| 355 | KCGD_HORZ_START+KCGD_DISP_HORZ, KCGD_TOTAL_VERT, KCGD_VERT_START, |
| 356 | KCGD_VERT_START+KCGD_DISP_VERT); |
| 357 | |
| 358 | MCFG_SCREEN_PALETTE("palette") |
| 359 | MCFG_PALETTE_ADD("palette", 16) |
| 360 | MCFG_PALETTE_INIT_OWNER(kcgd_state, kcgd) |
| 361 | |
| 362 | MCFG_GFXDECODE_ADD("gfxdecode", "palette", kcgd) |
| 363 | #if 0 |
| 364 | MCFG_DEVICE_ADD("ms7004", MS7004, 0) |
| 365 | MCFG_MS7004_TX_HANDLER(DEVWRITELINE("i8251kbd", i8251_device, write_rxd)) |
| 366 | |
| 367 | MCFG_DEVICE_ADD("keyboard_clock", CLOCK, 4800*16) |
| 368 | MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(kcgd_state, write_keyboard_clock)) |
| 369 | #endif |
| 370 | MACHINE_CONFIG_END |
| 371 | |
| 372 | ROM_START( dvk_kcgd ) |
| 373 | ROM_REGION16_BE(0x100000,"maincpu", ROMREGION_ERASE00) |
| 374 | ROM_DEFAULT_BIOS("181") |
| 375 | ROM_SYSTEM_BIOS(0, "181", "mask 181") |
| 376 | ROMX_LOAD("kr1801re2-181.bin", 0100000, 020000, CRC(acac124f) SHA1(412c3eb71bece6f791fc5a9d707cf4692fd0b45b), ROM_BIOS(1)) |
| 377 | ROM_SYSTEM_BIOS(1, "182", "mask 182") |
| 378 | ROMX_LOAD("kr1801re2-182.bin", 0100000, 020000, CRC(3ca2921a) SHA1(389b30c40ed7e41dae71d58c7bff630359a48153), ROM_BIOS(2)) |
| 379 | ROM_END |
| 380 | |
| 381 | /* Driver */ |
| 382 | |
| 383 | /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ |
| 384 | COMP( 1987, dvk_kcgd, 0, 0, kcgd, 0, driver_device, 0, "USSR", "DVK KCGD", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW ) |