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root/cebix/Frodo4/Src/Display_Acorn.h
Revision: 1.5
Committed: 2009-01-11T11:32:38Z (13 years, 10 months ago) by cebix
Content type: text/plain
Branch: MAIN
CVS Tags: HEAD
Changes since 1.4: +2 -2 lines
Log Message:
const correctness

File Contents

# Content
1 /*
2 * Display_Acorn.h - C64 graphics display, emulator window handling,
3 * RISC OS specific stuff
4 *
5 * Frodo (C) 1994-1997,2002-2009 Christian Bauer
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22
23 #include "C64.h"
24 #include "ROlib.h"
25 #include "AcornGUI.h"
26 #include "SAM.h"
27 #include "VIC.h"
28
29
30
31 // (from Display_x.i)
32 /*
33 C64 keyboard matrix:
34
35 Bit 7 6 5 4 3 2 1 0
36 0 CUD F5 F3 F1 F7 CLR RET DEL
37 1 SHL E S Z 4 A W 3
38 2 X T F C 6 D R 5
39 3 V U H B 8 G Y 7
40 4 N O K M 0 J I 9
41 5 , @ : . - L P +
42 6 / ^ = SHR HOM ; *
43 7 R/S Q C= SPC 2 CTL <- 1
44 */
45
46
47 #define IntKey_MinCode 3 // Scan from ShiftLeft (leave out Shift, Ctrl, Alt)
48 #define IntKey_MaxCode 124
49 #define IntKey_Copy 105
50
51 // Maps internal keyboard numbers (Acorn) to C64 keyboard-matrix.
52 // Format: top nibble - row#, bottom nibble - column (bit#).
53 // Entry == 0xff <==> don't map
54 char KeysAcornToCBM[] = {
55 0x17, 0x72, 0x75, 0x17, // 0 - 3: SHL, CTRL, ALT(C=), SHL
56 0x72, 0x75, 0x64, 0x72, // 4 - 7: CTRL, ALT, SHR, CTRL
57 0x75, 0xff, 0xff, 0xff, // 8 - 11: ALT, MouseSlct, MouseMen, MouseAdj
58 0xff, 0xff, 0xff, 0xff, // 12 - 15: dummies
59 0x76, 0x10, 0x13, 0x20, // 16 - 19: q, 3,4,5
60 0x03, 0x33, 0xff, 0x53, // 20 - 23: F4(F7), 8, F7, -
61 0x23, 0x02, 0xff, 0xff, // 24 - 27: 6, crsrL, num6, num7
62 0xff, 0xff, 0xff, 0xff, // 28 - 31: F11, F12, F10, ScrLock
63 0xff, 0x11, 0x16, 0x26, // 32 - 35: Print, w, e, t
64 0x30, 0x41, 0x40, 0x43, // 36 - 39: 7, i, 9, 0
65 0x53, 0x07, 0xff, 0xff, // 40 - 43: -, crsrD, num8, num9
66 0x77, 0x71, 0x60, 0x00, // 44 - 47: break, `, , DEL
67 0x70, 0x73, 0x22, 0x21, // 48 - 51: 1, 2, d, r
68 0x23, 0x36, 0x46, 0x51, // 52 - 55: 6, u, o, p
69 0x56, 0x07, 0x50, 0x53, // 56 - 59: [(@), crsrU, num+(+), num-(-)
70 0xff, 0x00, 0x63, 0xff, // 60 - 63: numENTER, insert, home, pgUp
71 0x17, 0x12, 0x27, 0x25, // 64 - 67: capsLCK, a, x, f
72 0x31, 0x42, 0x45, 0x73, // 68 - 71: y, j, k, 2
73 0x55, 0x01, 0xff, 0xff, // 72 - 75: ;(:), RET, num/, dummy
74 0xff, 0xff, 0xff, 0x62, // 76 - 79: num., numLCK, pgDown, '(;)
75 0xff, 0x15, 0x24, 0x32, // 80 - 83: dummy, s, c, g
76 0x35, 0x47, 0x52, 0x55, // 84 - 87: h, n, l, ;(:)
77 0x61, 0x00, 0xff, 0xff, // 88 - 91: ](*), Delete, num#, num*
78 0xff, 0x65, 0xff, 0xff, // 92 - 95: dummy, =, dummies
79 0x72, 0x14, 0x74, 0x37, // 96 - 99: TAB(CTRL), z, SPACE, v
80 0x34, 0x44, 0x57, 0x54, // 100-103: b, m, ',', .
81 0x67, 0xff, 0xff, 0xff, // 104-107: /, Copy, num0, num1
82 0xff, 0xff, 0xff, 0xff, // 108-111: num3, dummies
83 0x77, 0x04, 0x05, 0x06, // 112-115: ESC, F1(F1), F2(F3), F3(F5)
84 0xff, 0xff, 0xff, 0xff, // 116-119: F5, F6, F8, F9
85 0x66, 0x02, 0xff, 0xff, // 120-123: \(^), crsrR, num4, num5
86 0xff, 0xff, 0xff, 0xff // 124-127: num2, dummies
87 };
88
89
90 // Special keycodes that have to be processed seperately:
91 #define IntKey_CrsrL 25
92 #define IntKey_CrsrR 121
93 #define IntKey_CrsrU 57
94 #define IntKey_CrsrD 41
95 #define IntKey_Insert 61
96 #define IntKey_NumLock 77
97 #define IntKey_F5 116
98 #define IntKey_F6 117
99 #define IntKey_F7 22
100 #define IntKey_F8 118
101 #define IntKey_PageUp 63
102 #define IntKey_PageDown 78
103 #define IntKey_NumSlash 74
104 #define IntKey_NumStar 91
105 #define IntKey_NumCross 90
106
107 #define KeyJoy1_Up 108 // num3
108 #define KeyJoy1_Down 76 // num.
109 #define KeyJoy1_Left 107 // num1
110 #define KeyJoy1_Right 124 // num2
111 #define KeyJoy1_Fire 60 // numReturn
112 #define KeyJoy2_Up 67 // "f"
113 #define KeyJoy2_Down 82 // "c"
114 #define KeyJoy2_Left 97 // "z"
115 #define KeyJoy2_Right 66 // "x"
116 #define KeyJoy2_Fire 83 // "g"
117
118
119
120
121 C64Display::C64Display(C64 *the_c64) : TheC64(the_c64)
122 {
123 int i;
124
125 bitmap = new uint8[DISPLAY_X * DISPLAY_Y];
126 screen = new ROScreen();
127 ModeChange();
128 for (i=0; i<8; i++) {lastkeys[i] = 0;}
129 // First joystick: mapped to port 2 if numLOCK is on, else port 2
130 JoystickKeys[0].up = KeyJoy1_Up; JoystickKeys[0].down = KeyJoy1_Down;
131 JoystickKeys[0].left = KeyJoy1_Left; JoystickKeys[0].right = KeyJoy1_Right;
132 JoystickKeys[0].fire = KeyJoy1_Fire;
133 // Second joystick: only active if numLOCK is off! Mapped to port 2 then.
134 JoystickKeys[1].up = KeyJoy2_Up; JoystickKeys[1].down = KeyJoy2_Down;
135 JoystickKeys[1].left = KeyJoy2_Left; JoystickKeys[1].right = KeyJoy2_Right;
136 JoystickKeys[1].fire = KeyJoy2_Fire;
137 }
138
139
140 C64Display::~C64Display(void)
141 {
142 delete bitmap; delete screen;
143 }
144
145
146 void C64Display::ModeChange(void)
147 {
148 register int i;
149
150 screen->ReadMode();
151 // find best matching colours in current mode.
152 switch (screen->ldbpp)
153 {
154 case 0:
155 case 1:
156 case 2:
157 case 3: for (i=0; i<16; i++) // for 1,2,4 and 8bpp
158 {
159 mode_cols[i] = ModeColourNumber((palette_blue[i] << 24) + (palette_green[i] << 16) + (palette_red[i] << 8));
160 }
161 break;
162 case 4: for (i=0; i<16; i++) // for 16bpp
163 {
164 int r,g,b;
165
166 r = (palette_red[i] + 4) & 0x1f8; if (r > 0xff) {r = 0xf8;}
167 g = (palette_green[i] + 4) & 0x1f8; if (g > 0xff) {g = 0xf8;}
168 b = (palette_blue[i] + 4) & 0x1f8; if (b > 0xff) {b = 0xf8;}
169 mode_cols[i] = (r >> 3) | (g << 2) | (b << 7);
170 }
171 break;
172 case 5: for (i=0; i<16; i++) // for 32bpp
173 {
174 mode_cols[i] = palette_red[i] | (palette_green[i] << 8) | (palette_blue[i] << 16);
175 }
176 break;
177 }
178 }
179
180
181 uint8 *C64Display::BitmapBase(void)
182 {
183 return bitmap;
184 }
185
186
187 void C64Display::InitColors(uint8 *colors)
188 {
189 register int i;
190
191 // write index mapping C64colours -> ROcolours
192 if (screen->ldbpp <= 3) // at most 8bpp ==> use actual colour
193 {
194 for (i=0; i<256; i++) {colors[i] = mode_cols[i&15];}
195 }
196 else // else use index (takes time but can't be changed...
197 {
198 for (i=0; i<256; i++) {colors[i] = i&15;}
199 }
200 }
201
202
203 int C64Display::BitmapXMod(void)
204 {
205 return DISPLAY_X;
206 }
207
208
209 // This routine reads the raw keyboard data from the host machine. Not entirely
210 // conformant with Acorn's rules but the only way to detect multiple simultaneous
211 // keypresses.
212 void C64Display::PollKeyboard(uint8 *key_matrix, uint8 *rev_matrix, uint8 *joystick, uint8 *joystick2)
213 {
214 register int scan_from=IntKey_MinCode, code, row, col;
215 int status;
216 uint8 kjoy, kjoy2;
217 uint32 newkeys[8];
218 UBYTE kjoy, kjoy2;
219
220 // Clear keyboard
221 for (code=0; code<8; code++) {key_matrix[code] = 0xff; rev_matrix[code] = 0xff; newkeys[code] = 0;}
222 kjoy = kjoy2 = 0xff;
223 status = ReadKeyboardStatus();
224 if ((status & 16) == 0) {key_matrix[1] &= 0x7f; rev_matrix[7] &= 0xfd;} // Caps lock
225
226 while (scan_from <= IntKey_MaxCode)
227 {
228 if ((code = ScanKeys(scan_from)) != 0xff)
229 {
230 newkeys[code >> 5] |= (1 << (code & 0x1f)); // update keys pressed
231 row = KeysAcornToCBM[code];
232 if ((status & 4) != 0) // numLOCK off? ==> check for 2nd keyboard joystick too
233 {
234 if (code == JoystickKeys[1].up) {kjoy2 &= 0xfe; row = 0xff;}
235 else if (code == JoystickKeys[1].down) {kjoy2 &= 0xfd; row = 0xff;}
236 else if (code == JoystickKeys[1].left) {kjoy2 &= 0xfb; row = 0xff;}
237 else if (code == JoystickKeys[1].right) {kjoy2 &= 0xf7; row = 0xff;}
238 else if (code == JoystickKeys[1].fire) {kjoy2 &= 0xef; row = 0xff;}
239 }
240 // check 1st keyboard joystick
241 if (code == JoystickKeys[0].up) {kjoy &= 0xfe; row = 0xff;}
242 else if (code == JoystickKeys[0].down) {kjoy &= 0xfd; row = 0xff;}
243 else if (code == JoystickKeys[0].left) {kjoy &= 0xfb; row = 0xff;}
244 else if (code == JoystickKeys[0].right) {kjoy &= 0xf7; row = 0xff;}
245 else if (code == JoystickKeys[0].fire) {kjoy &= 0xef; row = 0xff;}
246
247 // If key not mapped to joystick: try mapping to keyboard
248 if (row != 0xff)
249 {
250 col = row & 7; row >>= 4;
251 key_matrix[row] &= ~(1<<col); rev_matrix[col] &= ~(1<<row);
252 }
253
254 // None of the keys listed below should be used for
255 // joystick definitions since they're always used here.
256 switch(code)
257 {
258 // For either of these: additionally set SHIFT key.
259 case IntKey_CrsrL: // already mapped to CrsrL
260 case IntKey_CrsrU: // already mapped to CrsrD
261 case IntKey_Insert: // already mapped to DEL
262 key_matrix[6] &= (0xff - (1<<4)); rev_matrix[4] &= (0xff - (1<<6));
263 break;
264 case IntKey_F6:
265 if ((status & 2) == 0) // call SAM only in multitasking mode!
266 {
267 TheC64->Pause(); SAM(TheC64); TheC64->Resume();
268 }
269 break;
270 case IntKey_F7: TheC64->NMI(); break;
271 case IntKey_F8: TheC64->Reset(); break;
272 default: break;
273 }
274
275 // These shouldn't auto-repeat, therefore I check them seperately.
276 if ((lastkeys[code >> 5] & (1 << (code & 0x1f))) == 0)
277 {
278 // Icons should be updated, not force-redrawed (--> single tasking)
279 switch (code)
280 {
281 // decrease framerate
282 case IntKey_PageUp:
283 TheC64->TheWIMP->PrefsWindow->
284 WriteIconNumberU(Icon_Prefs_SkipFText,++ThePrefs.SkipFrames);
285 break;
286 // increase framerate
287 case IntKey_PageDown: if (ThePrefs.SkipFrames > 0)
288 {
289 TheC64->TheWIMP->PrefsWindow->
290 WriteIconNumberU(Icon_Prefs_SkipFText,--ThePrefs.SkipFrames);
291 }
292 break;
293 // toggle floppy emulation status
294 case IntKey_NumSlash:
295 {
296 register int eor, i;
297 Prefs *prefs = new Prefs(ThePrefs);
298
299 // If Emulation active then ungrey icons now, else grey them
300 prefs->Emul1541Proc = !prefs->Emul1541Proc;
301 TheC64->TheWIMP->SetLEDIcons(prefs->Emul1541Proc);
302 TheC64->NewPrefs(prefs);
303 ThePrefs = *prefs;
304 // Show change in prefs window too
305 TheC64->TheWIMP->PrefsWindow->
306 SetIconState(Icon_Prefs_Emul1541,(prefs->Emul1541Proc)?IFlg_Slct:0,IFlg_Slct);
307 delete prefs;
308 }
309 break;
310 // toggle speed limiter
311 case IntKey_NumStar:
312 ThePrefs.LimitSpeed = !ThePrefs.LimitSpeed;
313 TheC64->TheWIMP->SetSpeedLimiter(ThePrefs.LimitSpeed);
314 break;
315 // toggle sound emulation
316 case IntKey_F5:
317 {
318 Window *pw = TheC64->TheWIMP->PrefsWindow;
319 int i, j;
320 Prefs *prefs = new Prefs(ThePrefs);
321
322 if (prefs->SIDType == SIDTYPE_NONE) {prefs->SIDType = SIDTYPE_DIGITAL; i = 1;}
323 else {prefs->SIDType = SIDTYPE_NONE; i = 0;}
324 for (j=0; j<3; j++)
325 {
326 pw->SetIconState(SIDtoIcon[j], (j==i) ? IFlg_Slct : 0, IFlg_Slct);
327 }
328 TheC64->TheWIMP->SoundWindow->
329 SetIconState(Icon_Sound_Notes, (i==0) ? IFlg_Grey : 0, IFlg_Grey);
330 TheC64->NewPrefs(prefs);
331 ThePrefs = *prefs;
332 delete prefs;
333 }
334 break;
335 case IntKey_Copy: TheC64->Pause();
336 TheC64->TheWIMP->EmuPane->WriteIconTextU(Icon_Pane_Pause,PANE_TEXT_RESUME); break;
337 default: break;
338 }
339 }
340 }
341 scan_from = code+1;
342 }
343 for (code=0; code<8; code++) {lastkeys[code] = newkeys[code];}
344 *joystick = kjoy; *joystick2 = kjoy2;
345 }
346
347
348 bool C64Display::NumLock(void)
349 {
350 return(((ReadKeyboardStatus() & 4) == 0) ? true : false);
351 }
352
353
354 /*
355 * Prefs may have changed
356 */
357
358 void C64Display::NewPrefs(Prefs *prefs)
359 {
360 }
361
362
363 void C64Display::Update(void)
364 {
365 int i, state;
366 int *ic;
367
368 // Do a redraw of the emulator window
369 TheC64->TheWIMP->UpdateEmuWindow();
370
371 // Update the LEDs if necessary
372 for (i=0; i<4; i++)
373 {
374 if ((state = led_state[i]) != old_led_state[i])
375 {
376 ic = (int*)TheC64->TheWIMP->EmuPane->GetIcon(LEDtoIcon[i]);
377 switch(state)
378 {
379 case LED_OFF:
380 case LED_ERROR_OFF:
381 sprintf((char*)ic[5],"led_off"); break;
382 case LED_ON:
383 sprintf((char*)ic[5],"led_on"); break;
384 case LED_ERROR_ON:
385 sprintf((char*)ic[5],"led_error"); break;
386 }
387 TheC64->TheWIMP->EmuPane->UpdateIcon(LEDtoIcon[i]); // update, not force-redraw!
388 old_led_state[i] = state;
389 }
390 }
391 }
392
393
394 unsigned int *C64Display::GetColourTable(void)
395 {
396 return (mode_cols);
397 }
398
399
400 // Check whether unpause-key (copy) is pressed
401 bool C64Display::CheckForUnpause(bool CheckLastState)
402 {
403 int scan_from = IntKey_MinCode, code;
404 uint32 newkeys[8];
405 uint32 lastpause;
406
407 for (code=0; code<8; code++) {newkeys[code] = 0;}
408
409 while (scan_from <= IntKey_MaxCode)
410 {
411 if ((code = ScanKeys(scan_from)) != 0xff)
412 {
413 newkeys[code >> 5] |= (1 << (code & 0x1f));
414 }
415 scan_from = code+1;
416 }
417 lastpause = lastkeys[IntKey_Copy >> 5] & (1 << (IntKey_Copy & 0x1f));
418 for (code=0; code<8; code++) {lastkeys[code] = newkeys[code];}
419 // unpause-key pressed?
420 if ((newkeys[IntKey_Copy >> 5] & (1 << (IntKey_Copy & 0x1f))) != 0)
421 {
422 if ((lastpause == 0) || !CheckLastState)
423 {
424 TheC64->Resume();
425 TheC64->TheWIMP->EmuPane->WriteIconTextU(Icon_Pane_Pause,PANE_TEXT_PAUSE);
426 return(true);
427 }
428 }
429 return(false);
430 }
431
432
433 // Requester dialogue box
434 long ShowRequester(const char *str, const char *button1, const char *button2)
435 {
436 _kernel_oserror myerr;
437
438 myerr.errnum = 0x0; strcpy(myerr.errmess,str);
439 Wimp_ReportError(&myerr,1,TASKNAME); // always provide an OK box
440 return(1);
441 }