Previous 199869 Revisions Next

r33810 Thursday 11th December, 2014 at 01:47:43 UTC by Robbbert
(MESS) excalibur : added freshly-dumped colour prom (nw)
[src/mess/drivers]excali64.c

trunk/src/mess/drivers/excali64.c
r242321r242322
1616  determine the correct positions.
1717- The position of the "Line Insert" key is unknown.
1818- PCGEN command not working.
19- Colours are wrong (colour prom needs to be dumped)
19- Colours are approximate.
2020- Disk controller
2121- Banking
2222- The schematic shows the audio counter connected to 2MHz, but this produces
r242321r242322
2525- Parallel / Centronics
2626- Need software
2727- Pasting can drop a character or two at the start of a line.
28- Clock change for crtc
2928
3029****************************************************************************/
3130
r242321r242322
5554      , m_io_keyboard(*this, "KEY")
5655   { }
5756
58   DECLARE_DRIVER_INIT(excali64);
5957   DECLARE_PALETTE_INIT(excali64);
6058   DECLARE_WRITE8_MEMBER(ppib_w);
6159   DECLARE_READ8_MEMBER(ppic_r);
r242321r242322
222220{
223221   UINT8 data = m_sys_status & 7;
224222   data |= (UINT8)m_crtc_vs << 4;
225   data |= (UINT8)m_crtc_de << 5;
223   data |= (UINT8)m_crtc_de << 3;
226224   return data;
227225}
228226
r242321r242322
233231
234232/*
235233d0,1,2 : same as port50
236d3 : 2nd colour set
234d7 : 2nd colour set
237235*/
238236WRITE8_MEMBER( excali64_state::port70_w )
239237{
r242321r242322
256254   m_crtc_vs = state;
257255}
258256
259DRIVER_INIT_MEMBER( excali64_state, excali64 )
260{
261   m_p_chargen = memregion("chargen")->base();
262   m_p_videoram = memregion("videoram")->base();
263}
264
265257/* F4 Character Displayer */
266258static const gfx_layout excali64_charlayout =
267259{
r242321r242322
280272   GFXDECODE_ENTRY( "chargen", 0x0000, excali64_charlayout, 0, 1 )
281273GFXDECODE_END
282274
283// The colour names in the comments are what's needed, the current rgb values are mostly wrong
275// The prom, the schematic, and the manual all contradict each other,
276// so the colours can only be described as wild guesses. Further, the 38
277// colour-load resistors are missing labels and values.
284278PALETTE_INIT_MEMBER( excali64_state, excali64 )
285279{
286   // Colour Menu A
287   palette.set_pen_color(0, 0x00, 0x00, 0x00);   /*  0 Black     */
288   palette.set_pen_color(1, 0x7f, 0x00, 0x00);   /*  1 Dark Red      */
289   palette.set_pen_color(2, 0xff, 0x00, 0x00);   /*  2 Red       */
290   palette.set_pen_color(3, 0x00, 0x00, 0x00);   /*  3 Pink     */
291   palette.set_pen_color(4, 0xbf, 0xbf, 0xbf);   /*  4 Orange     */
292   palette.set_pen_color(5, 0x00, 0xff, 0xff);   /*  5 Brown     */
293   palette.set_pen_color(6, 0xff, 0xff, 0x00);   /*  6 Yellow        */
294   palette.set_pen_color(7, 0x7f, 0x7f, 0x00);   /*  7 Dark Green */
295   palette.set_pen_color(8, 0x00, 0x7f, 0x00);   /*  8 Green     */
296   palette.set_pen_color(9, 0x00, 0xff, 0x00);   /*  9 Bright Green  */
297   palette.set_pen_color(10, 0x00, 0x00, 0xff);  /* 10 Light Blue    */
298   palette.set_pen_color(11, 0x00, 0x00, 0x7f);  /* 11 Blue      */
299   palette.set_pen_color(12, 0xff, 0x00, 0xff);  /* 12 Magenta       */
300   palette.set_pen_color(13, 0x7f, 0x00, 0x7f);  /* 13 Purple        */
301   palette.set_pen_color(14, 0x80, 0x80, 0x80);  /* 14 Dark Grey      */
302   palette.set_pen_color(15, 0xff, 0xff, 0xff);  /* 15 White     */
303   // Colour Menu B
304   palette.set_pen_color(16, 0x00, 0x00, 0x00);  /*  0 Black     */
305   palette.set_pen_color(17, 0x7f, 0x00, 0x00);  /*  1 Dark Red  */
306   palette.set_pen_color(18, 0xff, 0x00, 0x00);  /*  2 Red       */
307   palette.set_pen_color(19, 0x80, 0x80, 0x80);  /*  3 Flesh     */
308   palette.set_pen_color(20, 0x00, 0x00, 0xff);  /*  4 Pink      */
309   palette.set_pen_color(21, 0xff, 0xff, 0x80);  /*  5 Yellow Brown */
310   palette.set_pen_color(22, 0x00, 0x00, 0x00);  /*  6 Dark Brown     */
311   palette.set_pen_color(23, 0x00, 0xff, 0x00);  /*  7 Dark Purple */
312   palette.set_pen_color(24, 0xff, 0x80, 0xff);  /*  8 Very Dark Green */
313   palette.set_pen_color(25, 0x00, 0xff, 0xff);  /*  9 Yellow Green */
314   palette.set_pen_color(26, 0xff, 0x40, 0x40);  /* 10 Grey Blue */
315   palette.set_pen_color(27, 0xff, 0x00, 0x00);  /* 11 Sky Blue */
316   palette.set_pen_color(28, 0x00, 0x80, 0x80);  /* 12 Very Pale Blue */
317   palette.set_pen_color(29, 0xff, 0x00, 0xff);  /* 13 Dark Grey */
318   palette.set_pen_color(30, 0x80, 0xff, 0x80);  /* 14 Light Grey */
319   palette.set_pen_color(31, 0xff, 0xff, 0xff);  /* 15 White     */
280   // do this here because driver_init hasn't run yet
281   m_p_videoram = memregion("videoram")->base();
282   m_p_chargen = memregion("chargen")->base();
283
284   UINT8 r,g,b,i,code;
285   for (i = 0; i < 32; i++)
286   {
287      code = m_p_chargen[0x1000+i];
288      r = (BIT(code, 0) ? 38 : 0) + (BIT(code, 1) ? 73 : 0) + (BIT(code, 2) ? 144 : 0);
289      b = (BIT(code, 3) ? 38 : 0) + (BIT(code, 4) ? 73 : 0) + (BIT(code, 5) ? 144 : 0);
290      g = (BIT(code, 6) ? 85 : 0) + (BIT(code, 7) ? 170 : 0);
291      palette.set_pen_color(i, r, g, b);
292   }
293
294
320295   // Background
321296   palette.set_pen_color(32, 0x00, 0x00, 0x00);  //  0 Black
322297   palette.set_pen_color(33, 0xff, 0x00, 0x00);  //  1 Red
r242321r242322
334309   const rgb_t *palette = m_palette->palette()->entry_list_raw();
335310   UINT8 chr,gfx,col,bg,fg;
336311   UINT16 mem,x;
337   UINT8 col_base = BIT(m_sys_status, 3) ? 16 : 0;
312   UINT8 col_base = BIT(m_sys_status, 7) ? 16 : 0;
338313   UINT32 *p = &bitmap.pix32(y);
339314
340315   for (x = 0; x < x_count; x++)
r242321r242322
350325      else
351326         gfx = m_p_chargen[(chr<<4) | ra]; // normal character
352327     
353      gfx ^= ((x == cursor_x) ? 0xff : 0);
328      gfx ^= (x == cursor_x) ? 0xff : 0;
354329
355330      /* Display a scanline of a character */
356331      *p++ = palette[BIT(gfx, 0) ? fg : bg];
r242321r242322
434409
435410   ROM_REGION(0x2000, "videoram", ROMREGION_ERASE00)
436411
437   ROM_REGION(0x1000, "chargen", 0)
412   ROM_REGION(0x1020, "chargen", 0)
438413   ROM_LOAD( "genex_3.ic43", 0x0000, 0x1000, CRC(b91619a9) SHA1(2ced636cb7b94ba9d329868d7ecf79963cefe9d9) )
414   ROM_LOAD( "hm7603.ic55",  0x1000, 0x0020, CRC(c74f47dc) SHA1(331ff3c913846191ddd97cacb80bd19438c1ff71) )
439415ROM_END
440416
441417/* Driver */
442418
443/*    YEAR  NAME      PARENT  COMPAT   MACHINE    INPUT     CLASS             INIT        COMPANY         FULLNAME        FLAGS */
444COMP( 1984, excali64, 0,      0,       excali64,  excali64, excali64_state, excali64,  "BGR Computers", "Excalibur 64", GAME_NOT_WORKING )
419/*    YEAR  NAME      PARENT  COMPAT   MACHINE    INPUT     CLASS         INIT        COMPANY         FULLNAME        FLAGS */
420COMP( 1984, excali64, 0,      0,       excali64,  excali64, driver_device, 0,  "BGR Computers", "Excalibur 64", GAME_NOT_WORKING )

https://github.com/mamedev/mame/commit/fd1695f3603007adc5bb656170d3ce9795742c73

Previous 199869 Revisions Next

© 1997-2024 The MAME Team