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1 nishi 1 
/* $Id: shiroi.c 14 2024-08-29 04:38:46Z nishi $ */
2 
 
8 nishi 3 
#include "io.h"
12 nishi 4 
 
9 nishi 5 
#include "math.h"
6 
#include "sound.h"
8 nishi 7 
#include "video.h"
8 
#include "text.h"
12 nishi 9 
#include "debug.h"
10 
 
8 nishi 11 
#include "char.h"
12 
 
1 nishi 13 
void init_cards(void);
7 nishi 14 
void basic(void);
1 nishi 15 
 
8 nishi 16 
extern short vdp_addr;
17 
extern short vdp_data;
18 
extern short vdg_addr;
19 
extern short vdg_data;
7 nishi 20 
 
8 nishi 21 
extern short psg_addr;
22 
extern short psg_data;
7 nishi 23 
 
12 nishi 24 
extern short debug_addr;
25 
extern short debug_data;
26 
 
8 nishi 27 
extern short fpu_stack;
28 
extern short fpu_command;
7 nishi 29 
 
8 nishi 30 
extern short text_kbd_data;
1 nishi 31 
 
8 nishi 32 
extern int scrwidth;
33 
extern int scrheight;
1 nishi 34 
 
8 nishi 35 
extern char caps;
7 nishi 36 
 
4 nishi 37 
unsigned char keylist[13 * 4];
38 
unsigned char keylist_caps[13 * 4];
39 
 
2 nishi 40 
void main(void){
1 nishi 41 
	int i;
42 
 
4 nishi 43 
/*
44 
 * / 1 2 3 4 5 6 7 8 9 10 11 12 13
7 nishi 45 
 * 1 1 2 3 4 5 6 7 8 9 0  -  =  bs
4 nishi 46 
 * 2 q w e r t y u i o p  [  ]  rt
47 
 * 3 a s d f g h j k l ;  '  \  cl
48 
 * 4 z x c v b n m , . /  sp
5 nishi 49 
 *
50 
 * When Caps Lock
51 
 *
52 
 * / 1 2 3 4 5 6 7 8 9 10 11 12 13
7 nishi 53 
 * 1 ! @ # $ % ^ & * ( )  _  +  bs
5 nishi 54 
 * 2 Q W E R T Y U I O P  {  }  rt
55 
 * 3 A S D F G H J K L :  "  |  cl
56 
 * 4 Z X C V B N M < > ?  sp
4 nishi 57 
 */
58 
	const char* keys;
59 
 
7 nishi 60 
	keys = "1234567890-=\x08";
4 nishi 61 
	for(i = 0; i < 13; i++){
62 
		keylist[i] = keys[i];
63 
	}
64 
	keys = "qwertyuiop[]\n";
65 
	for(i = 0; i < 13; i++){
66 
		keylist[13 + i] = keys[i];
67 
	}
68 
	keys = "asdfghjkl;'\\!";
69 
	for(i = 0; i < 13; i++){
70 
		keylist[26 + i] = keys[i];
71 
	}
72 
	keys = "zxcvbnm,./    ";
73 
	for(i = 0; i < 13; i++){
74 
		keylist[39 + i] = keys[i];
75 
	}
76 
 
7 nishi 77 
	keys = "!@#$%^&*()_+\x08";
4 nishi 78 
	for(i = 0; i < 13; i++){
79 
		keylist_caps[i] = keys[i];
80 
	}
81 
	keys = "QWERTYUIOP{}\n";
82 
	for(i = 0; i < 13; i++){
83 
		keylist_caps[13 + i] = keys[i];
84 
	}
85 
	keys = "ASDFGHJKL:\"|!";
86 
	for(i = 0; i < 13; i++){
87 
		keylist_caps[26 + i] = keys[i];
88 
	}
89 
	keys = "ZXCVBNM<>?    ";
90 
	for(i = 0; i < 13; i++){
91 
		keylist_caps[39 + i] = keys[i];
92 
	}
93 
 
1 nishi 94 
	vdp_addr = -1;
7 nishi 95 
	vdg_addr = -1;
1 nishi 96 
	psg_addr = -1;
12 nishi 97 
	debug_addr = -1;
7 nishi 98 
	fpu_stack = -1;
3 nishi 99 
	text_kbd_data = -1;
1 nishi 100 
 
101 
	init_cards();
102 
 
8 nishi 103 
#ifdef ONLY_VDP
104 
	if(vdp_addr == -1){
105 
#else
7 nishi 106 
	if(vdp_addr == -1 && vdg_addr == -1){
8 nishi 107 
#endif
1 nishi 108 
		int i;
13 nishi 109 
		debug_number(0x0001);
2 nishi 110 
		while(1);
1 nishi 111 
	}
112 
 
8 nishi 113 
	video_init();
114 
	text_init();
1 nishi 115 
 
7 nishi 116 
	clear();
1 nishi 117 
 
10 nishi 118 
	beep();
1 nishi 119 
 
3 nishi 120 
	if(text_kbd_data == -1){
13 nishi 121 
		debug_number(0x0002);
3 nishi 122 
		putstr("Text  Card Mark I not present\r\n");
123 
		putstr("Text  Card Mark I is required to use the BASIC\r\n");
124 
		putstr("Halted. Get one.\r\n");
125 
		while(1);
126 
	}
7 nishi 127 
	if(fpu_stack == -1){
13 nishi 128 
		debug_number(0x0003);
7 nishi 129 
		putstr("Math  Card Mark I not present\r\n");
130 
		putstr("Math  Card Mark I is required to use the BASIC\r\n");
131 
		putstr("Halted. Get one.\r\n");
132 
		while(1);
133 
	}
1 nishi 134 
 
7 nishi 135 
	int incr;
136 
	int move = 0;
137 
	char k;
138 
	int wait = 0;
139 
 
140 
	const char* title;
141 
 
8 nishi 142 
#ifdef ONLY_VDP
7 nishi 143 
	if(vdp_addr != -1){
8 nishi 144 
#else
145 
	if(vdp_addr != -1 || vdg_addr != -1){
146 
#endif
7 nishi 147 
		title = "Shiroi Microcomputer";
8 nishi 148 
		setvramaddr(scrwidth / 2 - strlen(title) / 2 + mull((scrheight - 9) / 2 - 1 + 3, scrwidth));
149 
		for(i = 0; title[i] != 0; i++) vramchar(title[i]);
7 nishi 150 
 
8 nishi 151 
		if(vdp_addr != -1){
152 
			title = "\x82 2024 Nishi";
153 
		}else if(vdg_addr != -1){
154 
			title = "(C) 2024 Nishi";
155 
		}
156 
		setvramaddr(scrwidth / 2 - strlen(title) / 2 + mull(scrheight - 2, scrwidth));
157 
		for(i = 0; title[i] != 0; i++) vramchar(title[i]);
7 nishi 158 
 
159 
		title = "Press any key to begin";
8 nishi 160 
		setvramaddr(scrwidth / 2 - strlen(title) / 2 + mull((scrheight - 9) / 2 + 1 + 3, scrwidth));
161 
		for(i = 0; title[i] != 0; i++) vramchar(title[i]);
7 nishi 162 
	}
163 
 
164 
move_bar:
165 
	if(vdp_addr != -1){
8 nishi 166 
	}
167 
#ifndef ONLY_VDP
168 
	else if(vdg_addr != -1){
7 nishi 169 
		goto skip;
170 
	}
8 nishi 171 
#endif
7 nishi 172 
	incr = move;
173 
	for(i = 0; i < 16; i++){
174 
		int j;
175 
		for(j = 0; j < 3; j++){
176 
			int p = incr;
177 
			if(p >= 15) p = p - 15;
178 
			if(wait == 0){
8 nishi 179 
				setvramaddr(i * 2 + j * 32);
180 
				_vramchar((p + 1) * 8 + 0x80);
181 
				_vramchar((p + 1) * 8 + 0x80);
182 
				setvramaddr(i * 2 + 32 * 20 - j * 32);
183 
				_vramchar((p + 1) * 8 + 0x80);
184 
				_vramchar((p + 1) * 8 + 0x80);
7 nishi 185 
			}else{
186 
				if(i * 2 - 1 < 0){
8 nishi 187 
					setvramaddr(i * 2 + j * 32);
188 
					_vramchar((p + 1) * 8 + 0x80);
7 nishi 189 
				}else{
8 nishi 190 
					setvramaddr(i * 2 + j * 32 - 1);
191 
					_vramchar((p + 1) * 8 + 0x80);
192 
					_vramchar((p + 1) * 8 + 0x80);
7 nishi 193 
				}
194 
				if(i * 2 - 1 < 0){
8 nishi 195 
					setvramaddr(i * 2 + 32 * 20 - j * 32);
196 
					_vramchar((p + 1) * 8 + 0x80);
7 nishi 197 
				}else{
8 nishi 198 
					setvramaddr(i * 2 + 32 * 20 - j * 32 - 1);
199 
					_vramchar((p + 1) * 8 + 0x80);
200 
					_vramchar((p + 1) * 8 + 0x80);
7 nishi 201 
				}
202 
			}
203 
		}
204 
		incr++;
205 
		if(incr == 15) incr = 0;
206 
	}
207 
	wait++;
208 
	if(wait == 2){
209 
		wait = 0;
210 
		move++;
211 
		if(move == 15) move = 0;
212 
	}
12 nishi 213 
	for(i = 0; i < 3 * 1024 / 16; i++);
7 nishi 214 
 
215 
skip:
216 
	if((k = inp(text_kbd_data)) == 0) goto move_bar;
217 
	while(inp(text_kbd_data) != 0);
218 
 
219 
	if(vdp_addr == -1){
220 
		outp(vdp_addr, 0xf0);
221 
		outp(vdp_addr, 0x87);
222 
	}
223 
 
8 nishi 224 
	basic();
3 nishi 225 
}
1 nishi 226 
 
2 nishi 227 
void init_cards(void){
1 nishi 228 
	int i;
229 
	int port = 2;
2 nishi 230 
	for(i = 0; i < 256 / 3; i++){
1 nishi 231 
		int t = inp(port);
2 nishi 232 
		if(t != 0){
8 nishi 233 
			video_card(t, port);
9 nishi 234 
			sound_card(t, port);
235 
			math_card(t, port);
8 nishi 236 
			text_card(t, port);
12 nishi 237 
			debug_card(t, port);
1 nishi 238 
		}
239 
		port += 3;
240 
	}
241 
}