订阅以下载
TEXTUAL INDUSTRIES™ WORD COPROCESSOR: PALINDROMES

-------------------- Textual Industries™ Word Coprocessor -------------------- The Textual Industries™ Word Coprocessor consists of a character buffer and two hardware registers which are used to read from or write to the buffer. Initially the buffer is empty. #WORD hardware register Read: Reads the contents of the character buffer as a single textual value. After the value is read the buffer is cleared. Write: Appends the value to the end of the character buffer. If the written value is a textual value then each of its characters is appended to the buffer in the order they appeared in the written value. If the written value is nume- rical then each of its digits is treated as a character representing that digit and appended to the buffer in order they appeard in the written value. #LTRS hardware register Read: Reads a character from the beginning of the character buffer. After the value is read the beginning of the buffer moves to the next character effec- tively removing the character that was just read. If the buffer is empty the read operation results in the numerical value "0". Write: If a single character textual value is written it is appended to the end of the character buffer. Otherwise the operation is a NOOP.