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1.1 root 1: /*****************************************************************************/
2: /* Generator - Sega Genesis emulation - (c) James Ponder 1997-1998 */
3: /*****************************************************************************/
4: /* */
5: /* ui.c - Acorn user interface */
6: /* */
7: /* *** THIS IS OUT OF DATE / NOT SUPPORTED, AND WON'T WORK *** */
8: /* */
9: /*****************************************************************************/
10:
11: #include <stdlib.h>
12: #include <stdio.h>
13:
14: #include <sys/swis.h>
15: #include <sys/os.h>
16:
17: #include <unistd.h>
18: #include <sys/time.h>
19:
20: #include <generator.h>
21: #include <ui.h>
22: #include <vdp.h>
23: #include <cpu68k.h>
24: #include <reg68k.h>
25:
26: typedef struct {
27: uint32 flags;
28: uint32 xres;
29: uint32 yres;
30: uint32 pixdepth;
31: uint32 framerate;
32: uint32 settings;
33: } t_modeblock;
34:
35: static uint8 *screenaddr;
36: static char file[256];
37: static unsigned int ui_bank;
38:
39: int ui_init(int argc, char *argv[])
40: {
41: uint32 r[10];
42: os_error *errblk;
43: t_modeblock *mb = malloc(sizeof(t_modeblock)+8*4);
44: uint32 *vars;
45: uint32 in[2];
46: uint32 out[2];
47: uint32 i;
48:
49: strcpy(file, argv[1]);
50:
51: if (!mb) {
52: fprintf(stderr, "Out of memory!\n");
53: exit(1);
54: }
55:
56: vars = &(mb->settings);
57:
58: mb->flags = 1;
59: mb->xres = 320;
60: mb->yres = 480;
61: mb->pixdepth = 3;
62: mb->framerate = 60;
63: *vars++ = 0; /* ModeFlags */
64: *vars++ = 128;
65: *vars++ = 3; /* NColour */
66: *vars++ = 255;
67: *vars++ = 4; /* X eig factor */
68: *vars++ = 2;
69: *vars++ = 5; /* Y eig factor */
70: *vars++ = 2;
71: *vars++ = -1;
72: r[0] = (uint32)0;
73: r[1] = (uint32)mb;
74: errblk = os_swi(OS_ScreenMode, r);
75: if (errblk) {
76: fprintf(stderr, errblk->errmess);
77: exit(1);
78: }
79: free(mb);
80: r[0] = 2;
81: os_swi(OS_ReadDynamicArea, r);
82: if (r[1] < 320*480*2) {
83: r[1]-= 320*480*2;
84: i = r[1];
85: errblk = os_swi(OS_ChangeDynamicArea, r);
86: if (errblk) {
87: fprintf(stderr, errblk->errmess);
88: exit(1);
89: }
90: if (r[1] != i) {
91: fprintf(stderr, "Cannot allocate enough screen memory\n");
92: exit(1);
93: }
94: }
95: in[0] = 149;
96: in[1] = -1;
97: r[0] = (uint32)in;
98: r[1] = (uint32)out;
99: errblk = os_swi(OS_ReadVduVariables, r);
100: if (errblk) {
101: fprintf(stderr, errblk->errmess);
102: exit(1);
103: }
104: screenaddr = (uint8 *)(out[0]);
105:
106: cpu68k_skip = 2;
107: vdp_basepixel = 32;
108:
109: ui_bank = 0;
110:
111: return(0);
112: }
113:
114: char *ui_setinfo(char *name, char *copyright)
115: {
116: return 0;
117: }
118:
119: int ui_loop(void)
120: {
121: char *retstr;
122:
123: if ((retstr = gen_loadimage(file))) {
124: fprintf(stderr, retstr);
125: exit(1);
126: }
127: ui_run();
128: return 0;
129: }
130:
131: void ui_line(unsigned int line)
132: {
133: vdp_renderline(line, screenaddr+ui_bank*320*480+640*line);
134: }
135:
136: void ui_endframe(void)
137: {
138: unsigned int i;
139: uint16 ent;
140: static uint32 cbuf[256];
141: uint32 r[10];
142: uint8 red, green, blue;
143:
144: ui_bank^= 1;
145:
146: r[0] = 19;
147: r[1] = 0;
148: r[2] = 0;
149: os_swi(OS_Byte, r);
150:
151: r[0] = 113;
152: r[1] = (ui_bank^1) + 1;
153: os_swi(OS_Byte, r);
154:
155: r[0] = 112;
156: r[1] = ui_bank + 1;
157: os_swi(OS_Byte, r);
158:
159: cbuf[0] = 0;
160: cbuf[1] = 0xFFFFFF00;
161: cbuf[255] = 0xFFFFFF00;
162:
163: for (i = 0; i < 64; i++) {
164: ent = LOCENDIAN16(((uint16 *)vdp_cram)[i]);
165: blue = (ent>>9) & 7;
166: green = (ent>>5) & 7;
167: red = (ent>>1) & 7;
168: cbuf[vdp_basepixel+i] = blue<<29 | green<<21 | red<<13;
169: cbuf[vdp_basepixel+64+i] = blue<<28 | green<<20 | red<<12;
170: cbuf[vdp_basepixel+128+i] = 0x80808000 | (blue<<28 | green<<20 | red<<12);
171: }
172: r[0] = -1;
173: r[1] = -1;
174: r[2] = (uint32)cbuf;
175: r[3] = 0;
176: r[4] = 0;
177: os_swi(ColourTrans_WritePalette, r);
178: return;
179: }
180:
181: void ui_run(void)
182: {
183: uint32 r[10];
184: uint32 lasttime = 0;
185: uint32 frames = 0;
186: uint32 clocks = 0;
187: struct timeval tv;
188: char tmp[100];
189: uint32 start;
190:
191: gettimeofday(&tv, NULL);
192: start = tv.tv_sec;
193:
194: while(0==0) {
195: reg68k_framestep();
196: gettimeofday(&tv, NULL);
197: if (tv.tv_sec != lasttime) {
198: os_vdu(7);
199: os_vdu(4);
200: os_vdu(31);
201: os_vdu(0);
202: os_vdu(59);
203: sprintf(tmp, "%02d %08X %04d", cpu68k_frames - frames, regs.pc,
204: tv.tv_sec - start);
205: r[0] = (uint32)tmp;
206: os_swi(OS_Write0, r);
207: frames = cpu68k_frames;
208: clocks = reg68k_clocks;
209: lasttime = tv.tv_sec;;
210: }
211: /*
212: if (cpu68k_frames > 2000) {
213: os_swi(OS_ReadC, r);
214: }
215: */
216: }
217: }
218:
219: void ui_final(void)
220: {
221: return;
222: }
223: int atexit(void (*func)(void)) {
224: return -1;
225: }
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