some work with PCI, updated my TODO

libc/stdio/printf.c

@@ -161,6 +161,17 @@ int printf(const char* restrict format, ...) {
 			if (!print(buffer, len))
 				return -1;
 			written += len;
+		} else if (*format == 'b') {
+			format++;
+			uint32_t i = (uint32_t) va_arg(parameters, uint32_t);
+			u32toa(i, buffer, 2);
+			size_t len = strlen(buffer);
+			if (maxrem < len) {
+				return -1;
+			}
+			if (!print(buffer, len))
+				return -1;
+			written += len;
 		} else {
 			format = format_begun_at;
 			size_t len = strlen(format);

libc/stdio/putchar.c

@@ -13,6 +13,10 @@ int putchar(int ic) {
 	terminal_write(&c, sizeof(c));
 #ifdef __TESTING__
 	serial_write(&c, sizeof(c));
+	if (c == '\n') {
+		char tmp = '\r';
+		serial_write(&tmp, sizeof(tmp));
+	}
 #endif
 #else
 	// TODO: Implement stdio and the write system call.