JOPInputStream.java

package java.io;

import com.jopdesign.sys.Const;
import com.jopdesign.sys.Native;

public class JOPInputStream extends InputStream {

	
	// public int available() throws IOException {
	public int available() {

		if ((Native.rd(Const.IO_STATUS)&Const.MSK_UA_RDRF)!=0) {
			return 1;
		} else {
			return 0;
		}
	}

	// public abstract int read() throws IOException;
	public int read() {

		while ((Native.rd(Const.IO_STATUS) & Const.MSK_UA_RDRF) == 0) {
			; // block, but should enable thread switching
		}
		return Native.rd(Const.IO_UART);
	}

	protected int read_unchecked() {

		return Native.rd(Const.IO_UART);
	}
	
}