docs/USERS.md

@@ -43,11 +43,19 @@ Triggers a kernel panic by trying to divide four by zero.
 
 #### `words`
 
-Prints ten random words using an arbitrary dictionary that you can expand in `src/programs/words.c`.
+Prints random words using an arbitrary dictionary that you can expand in `src/programs/words.c`.
+
+Options:
+- `<nothing>` will default amount of words to 10
+- `<integer>` will set the amount of words to that number 
 
 #### `primes`
 
-Computes prime numbers up to `PRIMES_MAX`, defined in `src/programs/primes.c`.
+Computes prime numbers.
+
+Options:
+- `<nothing>` will default to `PRIMES_MAX` (a million)
+- `<integer>` will compute primes up to that number
 
 #### `rainbow`
 
@@ -78,7 +86,7 @@ The classic echo command, that outputs your input.
 Outputs information about the current system (CPU and RAM).
  
 Options:
-- `nothing` will show basic info about the CPUid and lower/upper memory.
+- `<nothing>` will show basic info about the CPUid and lower/upper memory.
 - `-v` will output the CPUID, lower/upper memory, and the memory map.
 
 #### `conway`

src/drivers/rtc.c

@@ -0,0 +1,64 @@
+// Real-time clock driver implementation for better PRNG
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https://github.com/xamidev/blankos
+
+#include <stdint.h>
+#include "rtc.h"
+#include "../kernel/io.h"
+#include "../libc/stdio.h"
+
+uint8_t rtc_read_register(uint8_t reg)
+{
+	outb(0x70, reg);
+	return inb(0x71);
+}
+
+uint8_t bcd_to_bin(uint8_t bcd)
+{
+	return ((bcd/16)*10) + (bcd%16);
+}
+
+int rtc_is_updating()
+{
+	outb(0x70, 0x0A);
+	return (inb(0x71) & 0x80);
+}
+
+void rtc_read_time(rtc_time_t *time)
+{
+	while (rtc_is_updating());
+
+	time->seconds = rtc_read_register(0x00);
+	time->minutes = rtc_read_register(0x02);
+	time->hours = rtc_read_register(0x04);
+	time->day = rtc_read_register(0x06);
+	time->month = rtc_read_register(0x07);
+	time->year = rtc_read_register(0x08);
+
+	outb(0x70, 0x0B);
+	uint8_t registerB = inb(0x71);
+
+	if (!(registerB & 0x04))
+	{
+		time->seconds = bcd_to_bin(time->seconds);
+		time->minutes = bcd_to_bin(time->minutes);
+		time->hours = bcd_to_bin(time->hours);
+		time->day = bcd_to_bin(time->day);
+		time->month = bcd_to_bin(time->month);
+		time->year = bcd_to_bin(time->year);
+	}
+}
+
+void print_time(const rtc_time_t *time)
+{
+	printf("%02d/%02d/%02d %02d:%02d:%02d\n", time->day, time->month, time->year, time->hours, time->minutes, time->seconds);
+}
+
+long time_seed()
+{
+	rtc_time_t* time = {0};
+	rtc_read_time(time);
+	
+	return time->day + time->month + time->year + time->hours + time->minutes + time->seconds;	
+}

src/drivers/rtc.h

@@ -0,0 +1,23 @@
+// Real-time clock driver implementation header for better PRNG
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https://github.com/xamidev/blankos
+
+#ifndef RTC_H
+#define RTC_H
+
+typedef struct
+{
+	uint8_t seconds;
+	uint8_t minutes;
+	uint8_t hours;
+	uint8_t day;
+	uint8_t month;
+	uint8_t year;
+} rtc_time_t;
+
+void rtc_read_time(rtc_time_t *time);
+long time_seed();
+void print_time(const rtc_time_t *time);
+
+#endif

src/drivers/serial.c

@@ -282,5 +282,5 @@ void serial_printf(int errlevel, const char* fmt, ...)
     }
     fmt++;
   }
-  serial_puts("\n");
+  serial_puts("\r\n");
 }

src/kernel/kmain.c

@@ -31,11 +31,11 @@ void kmain(multiboot2_info *mb_info)
         tags += ((tag_size + 7) & ~7);
     }
 
-    serial_printf(3, "Framebuffer Address: 0x%x\r", fb_info->framebuffer_addr);
-	serial_printf(3, "Framebuffer Width: %u\r\n", fb_info->framebuffer_width);
-	serial_printf(3, "Framebuffer Height: %u\r\n", fb_info->framebuffer_height);
-	serial_printf(3, "Framebuffer Pitch: %u\r\n", fb_info->framebuffer_pitch);
-	serial_printf(3, "Framebuffer BPP: %u\r\n", fb_info->framebuffer_bpp);
+    serial_printf(3, "Framebuffer Address: 0x%x", fb_info->framebuffer_addr);
+	serial_printf(3, "Framebuffer Width: %u", fb_info->framebuffer_width);
+	serial_printf(3, "Framebuffer Height: %u", fb_info->framebuffer_height);
+	serial_printf(3, "Framebuffer Pitch: %u", fb_info->framebuffer_pitch);
+	serial_printf(3, "Framebuffer BPP: %u", fb_info->framebuffer_bpp);
 
     if (fb_info) {
         framebuffer = (uint32_t *)(uintptr_t) fb_info->framebuffer_addr;
@@ -47,6 +47,7 @@ void kmain(multiboot2_info *mb_info)
         //8x16 font, not padded 
         VGA_WIDTH = width/8;
         VGA_HEIGHT = height/16;
+        serial_printf(3, "VGA_WIDTH=%d, VGA_HEIGHT=%d", VGA_WIDTH, VGA_HEIGHT);
         scanline = width * (bpp/8);	
     }
 

src/kernel/shell.c

@@ -7,20 +7,48 @@
 #include "../libc/stdio.h"
 #include "../libc/string.h"
 #include "../programs/programs.h"
+#include "../libc/crypto.h"
 #include <stdint.h>
+#include "../drivers/rtc.h"
 
 #define BUFFER_SIZE 256
 #define MAX_COMMANDS 16
 #define MAX_ARGS     64
 
+// Splash screen: esthetic stuff.
+
 char* ascii_title =
 "\n"
 "----------------------------------------------\n"
-"Blank OS version 0.3.71-dev\n"
+"Blank OS version 0.3.84-alpha\n"
 "Author: @xamidev - star the repo for a cookie!\n"
 "----------------------------------------------\n"
 "\n";
 
+char* motd[] = 
+{
+	"Now in 2D!",
+	"Supercalifragilisticexpialidocious!",
+	"Tylko jedno w glowie mam!",
+};
+int motd_size = sizeof(motd)/sizeof(motd[0]);
+
+void splash()
+{ 
+	int random = randint(time_seed());
+	char* motd_pick = motd[random%motd_size];
+	cowsay(motd_pick, red, black);
+	colorputs("        blankOS 0.3.84-alpha", red, black);
+	puts("\n");
+	
+
+	puts("        Time: ");
+	rtc_time_t time;
+	rtc_read_time(&time);
+	print_time(&time);
+	puts("\n");
+}
+
 typedef void (*command_func_t)(int argc, char *argv[]);
 
 typedef struct
@@ -66,8 +94,8 @@ int parse_input(char* input, char* argv[], int max_args)
 }
 
 void shell_install()
-{ 
-  colorputs(ascii_title, yellow, black);
+{
+  splash();	
   
   register_command("help", program_help);
   register_command("panic", program_panic);
@@ -83,6 +111,7 @@ void shell_install()
   register_command("conway", program_conway);
   register_command("rot13", program_rot13);
   register_command("morse", program_morse);
+  register_command("cowsay", program_cowsay);
 
   for (;;)
   {

src/libc/string.c

@@ -74,3 +74,32 @@ char* strtok(char* str, const char* delimiter)
 
 	return token_start;
 }
+
+int atoi(char* str)
+{
+	int result = 0;
+
+	for (int i=0; str[i] != '\0'; i++)
+	{
+		result = result*10 + str[i] - '0';
+	}
+
+	return result;
+}
+
+void strcat(char* dest, const char* src)
+{
+	while (*dest)
+	{
+		dest++;
+	}
+
+	while (*src)
+	{
+		*dest = *src;
+		dest++;
+		src++;
+	}
+
+	*dest = '\0';
+}

src/libc/string.h

@@ -9,5 +9,8 @@
 int strlen(const char* str);
 int strcmp(const char* str1, const char* str2);
 char* strtok(char* str, const char* delimiter);
+int atoi(char* str);
+void strcat(char* dest, const char* src);
+
 
 #endif

src/programs/conway.c

@@ -13,14 +13,13 @@
 
 void print_grid(const unsigned char grid[X][Y])
 {
+	clear();
 	for (int i=0; i<X; i++)
 	{
 		for (int j=0; j<Y; j++)
 		{
-			//(grid[i][j] == LIVE) ? putc(42) : putc(32);
 			if (grid[i][j] == LIVE) {
-				serial_printf(3, "alive");
-			       //colorputc(32, 120);
+			       putc(35);
 			} else {
 	       		       putc(32);
 			}		       

src/programs/conway.h

@@ -6,8 +6,8 @@
 #ifndef CONWAY_H
 #define CONWAY_H
 
-#define X 25
-#define Y 80
+#define X 66
+#define Y 240
 
 #define GENERATIONS 100
 #define DEAD 0

src/programs/cowsay.c

@@ -0,0 +1,72 @@
+// Cowsay-like program
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https://github.com/xamidev/blankos
+
+#include "../libc/stdio.h"
+#include "../libc/string.h"
+
+#define MAX_MSG_LEN 128
+
+const char* cow =
+"        \\   ^__^\n"
+"         \\  (oo)\\_______\n"
+"            (__)\\       )\\/\\\n"
+"                ||----w |\n"
+"                ||     ||\n";
+
+void print_bubble(const char* message)
+{
+	int len = strlen(message);
+	puts(" ");
+	for (int i=0; i<len+2; i++)
+	{
+		puts("_");
+	}
+	puts("\n");
+
+	printf("< %s >\n", message);
+
+	puts(" ");
+	for (int i=0; i<len+2; i++)
+	{
+		puts("-");
+	}
+	puts("\n");
+}
+
+void cowsay(char* msg, uint32_t fg, uint32_t bg)
+{
+	print_bubble(msg);
+	colorputs(cow, fg, bg);
+}
+
+void program_cowsay(int argc, char* argv[])
+{
+	if (argc < 2)
+	{
+		printf("Usage: %s <message>\n", argv[0]);
+		return;
+	}
+
+	char message[MAX_MSG_LEN];
+	message[0] = '\0';
+
+	for (int i=1; i<argc; i++)
+	{
+		if (strlen(message) + strlen(argv[i]) + 1 < MAX_MSG_LEN)
+		{
+			strcat(message, argv[i]);
+			if (i < argc-1)
+			{
+				strcat(message, " ");
+			}
+		} else {
+			puts("Too long message.\n");
+			return;
+		}
+	}
+
+	print_bubble(message);
+	printf("%s", cow);
+}

src/programs/primes.c

@@ -6,6 +6,7 @@
 #include <stdint.h>
 #include "../libc/stdio.h"
 #include "../kernel/system.h"
+#include "../libc/string.h"
 
 #define PRIMES_MAX 1000000
 
@@ -16,15 +17,25 @@ bool isPrime(int n)
 	return true;
 }
 
-void program_primes()
+void program_primes(int argc, char* argv[])
 {
-	for (long long x=0; x<PRIMES_MAX; x++)
+	int primes_max;
+	
+	if (argc == 1)
+	{
+		primes_max = PRIMES_MAX;
+	} else if (argc == 2)
+	{
+		primes_max = atoi(argv[1]);
+	}
+
+	for (long long x=0; x<primes_max; x++)
 	{	
 		if (isPrime(x))
 		{
 				printf("%d ", x);	
 		}
-		delay(2);
+		delay(1);
 	}
 	puts("\n");
 }

src/programs/programs.h

@@ -15,6 +15,8 @@ void program_sysinfo();
 void get_cpuid();
 void get_meminfo(unsigned int multiboot_info_address);
 void program_conway();
+void program_cowsay();
+void cowsay(); // Splash screen
 
 // Ciphers
 void program_rot13();

src/programs/words.c

@@ -6,45 +6,206 @@
 #include "../libc/stdio.h"
 #include "../libc/crypto.h"
 #include "../kernel/system.h"
+#include "../libc/string.h"
+
+// Small dictionary
 
 char* words[] =
 {
+	// A
 	"I", "us", "they", "my",
 	"a", "an", "is", "are", "for", "while", "not", "none", "yes", "no",
 	"absolutely", "addition", "additive", "afternoon", "architect", "ask",
-	"be", "blindfold", "brilliant", "boy", "brilliant", "bring", "buddy",
+	"ability", "above", "absence", "academy", "account", "achieve", "acquire",
+	"adapt", "admit", "adventure", "affection", "agenda", "agreement", "airport",
+	"alert", "alibi", "alive", "allow", "almond", "alphabet", "always",
+
+	// B
+	"be", "blindfold", "brilliant", "boy", "bring", "buddy",
+	"balance", "bamboo", "band", "banjo", "bank", "banner", "barrel",
+	"basic", "battery", "beach", "beacon", "beard", "behavior", "believe",
+	"belt", "benefit", "berry", "bicycle", "bingo", "biology", "birthday",
+	"biscuit", "bitter", "blanket", "blizzard", "blossom", "blueprint", "board",
+
+	// C
 	"career", "caterpillar", "change", "cheeky", "chop",
+	"cabin", "cactus", "camera", "candle", "candy", "canoe", "canvas",
+	"capital", "captain", "caravan", "carbon", "carpet", "cartoon", "castle",
+	"casual", "catalog", "catch", "category", "celebrate", "ceremony", "certain",
+	"chain", "chair", "chamber", "charge", "charity", "cheese", "chef",
+
+	// D
 	"decide", "demonstrate", "draw", "druggist",
-	"eagle", "ear", "effort", "evening", 
+	"daisy", "dance", "danger", "daring", "database", "debate", "decade",
+	"decline", "decorate", "decrease", "dedicate", "defeat", "defend", "define",
+	"degree", "delight", "delivery", "demand", "dentist", "deny", "depart",
+	"depth", "describe", "deserve", "desire", "destroy", "develop", "device",
+
+	// E
+	"eagle", "ear", "effort", "evening",
+	"early", "earn", "earth", "ease", "east", "easy", "echo",
+	"eclipse", "economy", "edge", "edit", "educate", "effect", "effort",
+	"egg", "eight", "either", "elder", "elect", "elegant", "element",
+	"elephant", "elevator", "elite", "embark", "embrace", "emerge", "emotion",
+
+	// F
 	"fabric", "famous", "fuse",
+	"face", "factor", "fail", "fair", "fall", "false", "fame",
+	"family", "fancy", "fantasy", "farewell", "farm", "fashion", "fast",
+	"fault", "favor", "feather", "feature", "federal", "feedback", "feeling",
+	"female", "fence", "festival", "fever", "fiber", "fiction", "field",
+
+	// G
 	"generation", "generous", "girl", "gypsy", "grip",
+	"gallery", "game", "garage", "garden", "garlic", "gas", "gate",
+	"gather", "general", "genius", "gentle", "genuine", "geography", "gesture",
+	"ghost", "giant", "gift", "giggle", "ginger", "giraffe", "glance",
+	"glass", "globe", "glory", "glove", "glue", "goal", "gold",
+
+	// H
 	"habit", "handsome", "helmet", "help", "horror",
+	"hair", "half", "hammer", "hand", "handle", "hang", "happen",
+	"harbor", "hard", "harm", "harvest", "hat", "hate", "have",
+	"head", "health", "heart", "heat", "heaven", "heavy", "hedge",
+	"height", "hello", "heritage", "hero", "hesitate", "hidden", "high",
+
+	// I
 	"insist", "inventor", "itself", "ivory",
-	"jog", "joint", "joke", "judge", 
+	"ice", "idea", "ideal", "identify", "ignore", "ill", "image",
+	"imagine", "impact", "import", "impress", "improve", "impulse", "inch",
+	"include", "income", "increase", "index", "industry", "infant", "inform",
+	"insect", "inside", "inspire", "install", "instead", "insult", "intact",
+
+	// J
+	"jog", "joint", "joke", "judge",
+	"jacket", "jaguar", "jail", "jam", "january", "jar", "jazz",
+	"jealous", "jeans", "jelly", "jewel", "job", "join", "journey",
+	"joy", "judge", "juice", "jump", "jungle", "junior", "justice",
+	"just", "justify", "juggle", "juice", "jumper", "junction", "jury",
+
+	// K
 	"karate", "kebab", "kitchen",
+	"kangaroo", "keen", "keep", "kettle", "key", "keyboard", "kick",
+	"kid", "kidney", "king", "kiss", "kite", "knee", "knife",
+	"knit", "knock", "knot", "know", "knowledge", "koala", "kudos",
+	"keen", "kernel", "kit", "kitten", "knack", "knight", "knock",
+
+	// L
 	"lamb", "lawnmower", "left", "lock",
+	"label", "labor", "lace", "ladder", "lady", "lake", "lamp",
+	"land", "language", "large", "laser", "last", "later", "laugh",
+	"launch", "law", "layer", "lead", "leaf", "learn", "least",
+	"leather", "leave", "lecture", "legal", "legend", "lemon", "length",
+
+	// M
 	"math", "medicine", "most",
+	"machine", "magnet", "mail", "main", "major", "make", "male",
+	"manage", "mango", "manner", "manual", "map", "marble", "march",
+	"mark", "market", "marriage", "master", "match", "material", "matter",
+	"maximum", "mayor", "meal", "mean", "measure", "media", "memory",
+
+	// N
 	"noodles", "nowadays", "nowhere",
+	"nail", "name", "narrow", "nation", "native", "nature", "navy",
+	"near", "neat", "necessary", "neck", "need", "negative", "neglect",
+	"neither", "nerve", "nest", "net", "network", "neutral", "never",
+	"new", "news", "next", "nice", "night", "noble", "noise",
+
+	// O
 	"ocean", "older", "ounce",
+	"object", "observe", "obtain", "occasion", "occupy", "occur", "ocean",
+	"offer", "office", "often", "oil", "old", "olive", "olympic",
+	"omit", "once", "one", "onion", "online", "only", "open",
+	"opera", "opinion", "oppose", "option", "orange", "orbit", "order",
+
+	// P
 	"part", "pathetic", "pastime",
+	"pace", "package", "page", "pain", "paint", "pair", "palm",
+	"panel", "panic", "paper", "parent", "park", "part", "party",
+	"pass", "path", "patient", "pattern", "pause", "peace", "peak",
+	"pen", "pencil", "people", "pepper", "perfect", "perform", "permit",
+
+	// Q
 	"quite", "quits", "quotation",
+	"quality", "quantity", "quarter", "queen", "query", "quest", "quick",
+	"quiet", "quilt", "quit", "quote", "quiz", "quota", "quiver",
+	"quirky", "quaint", "quake", "qualification", "qualify", "quark", "quartz",
+	"queue", "quench", "question", "quote", "quiver", "quorum", "quote",
+
+	// R
 	"race", "raise", "reality",
+	"rabbit", "race", "radio", "rain", "raise", "random", "range",
+	"rapid", "rare", "rate", "rather", "ratio", "reach", "react",
+	"read", "ready", "real", "reason", "rebel", "recall", "receive",
+	"recipe", "record", "recover", "reduce", "refer", "reflect", "reform",
+
+	// S
 	"safe", "scare", "screen",
+	"sack", "sail", "salad", "salt", "same", "sample", "sand",
+	"save", "scale", "scan", "scar", "scene", "school", "science",
+	"score", "scratch", "scream", "screen", "script", "search", "season",
+	"seat", "second", "secret", "section", "secure", "see", "seed",
+
+	// T
 	"taught", "temple", "that", "this",
+	"table", "tackle", "tail", "take", "tale", "talent", "talk",
+	"tank", "tape", "target", "task", "taste", "tax", "teach",
+	"team", "tear", "technology", "telephone", "television", "temperature", "tend",
+	"tennis", "tent", "term", "test", "text", "thank", "theory",
+
+	// U
 	"unable", "unkind", "usual",
+	"umbrella", "unable", "uncle", "under", "undo", "unfair", "unfold",
+	"union", "unique", "unit", "universe", "unknown", "unless", "unlike",
+	"unlock", "until", "unusual", "update", "upgrade", "upon", "upper",
+	"upset", "urban", "urge", "use", "usual", "utility", "utter",
+
+	// V
 	"velvet", "vivid", "vote",
+	"vacuum", "valid", "valley", "value", "vampire", "van", "vase",
+	"vast", "vault", "vector", "vehicle", "velvet", "vendor", "venture",
+	"verb", "verify", "version", "vessel", "veteran", "veto", "vibrate",
+	"victory", "video", "view", "village", "violin", "virtue", "virus",
+
+	// W
 	"we", "warm", "watch",
+	"wage", "wait", "walk", "wall", "wander", "want", "war",
+	"wash", "waste", "watch", "water", "wave", "way", "wealth",
+	"weapon", "wear", "weather", "weave", "wedding", "week", "weight",
+	"welcome", "well", "west", "wheel", "when", "whisper", "white",
+
+	// X
 	"xylophone",
+	"xenon", "xenophobia", "xerox", "xmas", "x-ray", "xylophone", "xylem",
+
+	// Y
 	"yolk", "young", "your",
+	"yard", "yarn", "year", "yell", "yellow", "yes", "yesterday",
+	"yet", "yield", "yogurt", "yoke", "youth", "yawn", "yearn",
+	"yacht", "yummy", "yogurt", "yoga", "yardstick", "yonder", "yummy",
+
+	// Z
 	"zebra", "zodiac", "zucchini",
+	"zero", "zone", "zoo", "zoom", "zeal", "zip", "zigzag",
+	"zenith", "zest", "zipper", "zombie", "zonal", "zinc", "zephyr"
 };
 
 int words_size = sizeof(words)/sizeof(words[0]);
 
 // Generates random words
-void program_words()
+void program_words(int argc, char* argv[])
 {
-	for (int i=0; i<10; i++)
+	int amount;
+
+	if (argc == 1)
+	{
+		amount = 10;
+	} else if (argc == 2)
+	{
+		amount = atoi(argv[1]);
+	}
+
+	for (int i=0; i<amount; i++)
 	{
 		int random = randint(global_ticks);
 		char* word = words[random%words_size];