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<HTML><HEAD><TITLE>Data Test Program (dt) July 26, 1995</TITLE></HEAD><BODY BGCOLOR="#DB70DB"><CENTER><H2><STRONG>What's New as of July 26, 1995</STRONG></H2></CENTER><H2>Changes For This Release</H2>The following changes have been made to <I>dt</I> Version 8.0:<UL><LI>On compare errors, data dumping now occurs by default. The"dlimit=value" option can be used to override the default dumplimit of 64 bytes (use "disable=dump" to turn dumping off).<LI>On compare errors, the relative block number is reported fordisk devices (see example below).<LI>The "align=rotate" option is now effective when selectingAIO testing (was being ignored before). Also corrected AIOend of media error handling (wasn't done consistently).<LI>Added "oncerr={abort|continue}" option to control child processerrors. By default, <I>dt</I> waits for all child processes to exit,regardless of whether an error is detected. When "oncerr=abort"is specified, <I>dt</I> aborts all child prcoesses when _any_ childexits with an error status (effectively a halt on error).<LI>Added special mapping of pattern strings as shown below:<PRE> Pattern String Input: \\ = Backslash \a = Alert (bell) \b = Backspace \f = Formfeed \n = Newline \r = Carriage Return \t = Tab \v = Vertical Tab \e or \E = Escape \ddd = Octal Value \xdd or \Xdd = Hexadecimal Value</PRE>This addition makes testing of terminals and printers easier.<LI>Minor changes were made to allow modem control testing to work.Normally, <I>dt</I> disables modem control (aka "stty local"), butspecifying "enable=modem" sets modem control (aka "stty -local"),On DEC systems, asserted modem signals get displayed at start oftest, when debug is enabled.<LI>On ptos BL7 or later, you can now use "flow=cts_rts" to selecthardware flow control. While <I>dt</I> always accepted this option,the OSF tty driver did not support hardware flow control before.<BLOCKQUOTE>NOTE: Ensure the cable used for testing supports modem signals(DSR, CD, CTS, & RTS) or loss of data or partial reads may occur,especially at high speeds. The terminal driver may simply blockread/write requests waiting for assertion of certain modem signals.</BLOCKQUOTE><LI>The "Total Statistics" report has been enhanced to display thepattern string "pattern=string" or the pattern file size "pf="when these options are used.</UL>As always, send me mail directly "rmiller@wasted.zk3.dec.com" ifyou encounter any problems. Please do _not_ QAR it (the Desk Top folkswho also use the name <I>dt</I>, won't appreciate it and won't help you).<HR>The latest version of <I>dt</I> is available on our production machinesin the following account:<P><CENTER><B>Location:</B> <I>wasted:~rmiller/dt.d/{dt,dt-ptos}</I></CENTER><CENTER>or via</CENTER><CENTER><A HREF="../dt.html"><B>URL:</B> <I>http://www.zk3.dec.com/~rmiller/dt.html</I></A></CENTER><HR><A HREF="mailto:rmiller@zk3.dec.com"><IMG SRC="../gifs/mailbox.gif" ALT="Mail"></A>Send mail to admin of this page: <EM>rmiller@zk3.dec.com</EM> <A HREF="../index.html"><IMG SRC="../gifs/home04.gif" ALT="Home"></A>To Robin's home page.<P>Last modified: February 22, 1996<HR><H2>Examples:</H2><HR SIZE=5 NOSHADE><PRE>Example 1: Shows new pattern string mapping, a data compare error reporting:<HR>% <B>dt if=/dev/rrz1b records=3 pattern="This is \xFF my test \a ^c^q^s^z pattern\r\n"</B>dt: Data compare error at byte 0 in record number 1dt: Relative block number where the error occcured is 0dt: Data expected = 0x54, data found = 0x61, byte count = 512dt: Pattern buffer pointer = 0x14000e000, data buffer pointer = 0x140012000dt: The incorrect data starts at address 0x14000e000 (marked by asterisk '*')dt: Dumping Pattern Buffer (base = 0x14000e000, offset = 0, limit = 34 bytes):0x14000e000 *54 68 69 73 20 69 73 20 ff 20 6d 79 20 74 65 730x14000e010 74 20 07 20 03 11 13 1a 20 70 61 74 74 65 72 6e0x14000e020 0d 0adt: The incorrect data starts at address 0x140012000 (marked by asterisk '*')dt: Dumping Data Buffer (base = 0x140012000, offset = 0, limit = 64 bytes):0x140012000 *61 62 63 64 65 66 68 68 69 6a 6b 6c 6d 6e 6f 700x140012010 71 72 73 74 75 76 77 78 79 7a 30 31 32 33 34 350x140012020 36 37 38 39 30 0d 0a 61 62 63 64 65 66 68 68 690x140012030 6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77 78 79dt: Error number 1 occurred on Sat Jul 22 13:02:04 1995Total Statistics: Input device/file name: /dev/rrz1b (Device: RZ26L, type=disk) Data pattern string used: 'This is \xFF my test \a ^c^q^s^z pattern\r\n' Data pattern read: 0x73696854 (first 4 bytes) Total records processed: 1 @ 512 bytes/record (0.500 Kbytes) Total bytes transferred: 512 (0.500 Kbytes, 0.000 Mbytes) Average transfer rates: 30720 bytes/sec, 30.000 Kbytes/sec Total passes completed: 0/1 Total errors detected: 1/1 Total elapsed time: 00m00.01s Total system time: 00m00.00s Total user time: 00m00.00s Starting time: Sat Jul 22 13:02:04 1995 Ending time: Sat Jul 22 13:02:04 1995%<HR NOSHADE>Example 2: Show modem control testing using hardware (CTS/RTS) flow control:<HR>im2fast% <B>dt if=/dev/tty01 of=/dev/tty00 bs=64 limit=100k pattern="^SRobin's Test Pattern\n^Q" enable=debug,modem speed=38400 flow=cts_rts</B>dt: Attempting to open input file '/dev/tty01', mode = 04...dt: Input file '/dev/tty01' successfully opened, fd = 4dt: Saving current terminal characteristics, fd = 4...dt: Setting up test terminal characteristics, fd = 4...--------------------------------------------------Modem Signals Set: 0x6 0x2 = TIOCM_DTR = Data Terminal Ready. 0x4 = TIOCM_RTS = Request To Send.--------------------------------------------------dt: Attempting to open output file '/dev/tty00', mode = 05...dt: Output file '/dev/tty00' successfully opened, fd = 10dt: Saving current terminal characteristics, fd = 10...dt: Setting up test terminal characteristics, fd = 10...--------------------------------------------------Modem Signals Set: 0x166 0x2 = TIOCM_DTR = Data Terminal Ready. 0x4 = TIOCM_RTS = Request To Send. 0x20 = TIOCM_CTS = Clear To Send. 0x40 = TIOCM_CAR = Carrier Detect. 0x100 = TIOCM_DSR = Data Set Ready.--------------------------------------------------dt (24197): Closing file '/dev/tty01', fd = 4...dt (24197): Parent PID (Writer) = 24197, Child PID (Reader) = 10042dt (10042): Closing file '/dev/tty00', fd = 10...dt (10042): Allocated buffer at address 0x140012000 of 68 bytes, using offset 0dt (24197): Allocated buffer at address 0x140012000 of 68 bytes, using offset 0dt (24197): Characters remaining in output queue = 320dt (24197): Waiting for output queue to drain...dt (24197): Output queue finished draining...Total Statistics (24197): Output device/file name: /dev/tty00 (device type=terminal) Terminal characteristics: flow=cts_rts, parity=none, speed=38400 Data pattern string used: '^SRobin's Test Pattern\n^Q' Data pattern written: 0x626f5213 (read verify disabled) Total records processed: 1600 @ 64 bytes/record (0.062 Kbytes) Total bytes transferred: 102400 (100.000 Kbytes, 0.098 Mbytes) Average transfer rates: 3497 bytes/sec, 3.415 Kbytes/sec Total passes completed: 1/1 Total errors detected: 0/1 Total elapsed time: 00m29.28s Total system time: 00m00.05s Total user time: 00m00.01s Starting time: Mon Jul 24 14:26:02 1995 Ending time: Mon Jul 24 14:26:32 1995dt (24197): Waiting for child PID 10042 to exit...Total Statistics (10042): Input device/file name: /dev/tty01 (device type=terminal) Terminal characteristics: flow=cts_rts, parity=none, speed=38400 Data pattern string used: '^SRobin's Test Pattern\n^Q' Data pattern read: 0x626f5213 (first 4 bytes) Total records processed: 1600 @ 64 bytes/record (0.062 Kbytes) Total bytes transferred: 102400 (100.000 Kbytes, 0.098 Mbytes) Average transfer rates: 3383 bytes/sec, 3.304 Kbytes/sec Total passes completed: 1/1 Total errors detected: 0/1 Total elapsed time: 00m30.26s Total system time: 00m00.15s Total user time: 00m00.06s Starting time: Mon Jul 24 14:26:02 1995 Ending time: Mon Jul 24 14:26:32 1995dt (10042): Restoring saved terminal characteristics, fd = 4...dt (10042): Closing file '/dev/tty01', fd = 4...dt (24197): Child PID 10042, exited with status = 0dt (24197): Restoring saved terminal characteristics, fd = 10...dt (24197): Closing file '/dev/tty00', fd = 10...im2fast% </PRE></BODY></HTML>⌨️ 快捷键说明
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