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11-12-88/T\ECHO
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
Tape/disk: | Home » CEEFAX disks » telesoftware11.adl |
Filename: | 11-12-88/T\ECHO |
Read OK: | ✔ |
File size: | 2B15 bytes |
Load address: | 0000 |
Exec address: | 0000 |
Duplicates
There is 1 duplicate copy of this file in the archive:
- CEEFAX disks » telesoftware11.adl » 11-12-88/T\ECHO
- CEEFAX disks » telesoftware16.adl » 02-07-89/T\Echo
File contents
Echoes An Intelligent Boot system for the BBC micro with DFS Introduction Echoes is a simple front end to the BBC's DFS system. It is designed to simplify the use of the DFS while providing access to increased file information. When Echoes is run, usually as a boot file, it reads the disc catalogue and interrogates all the files on the disc to try and obtain more information. Each file is listed on screen, together with the filename, a file number and the access status of the file (locked (L) or unlocked (U)) and any extra data that can be obtained. This extra data is actually the first REM statement - as in the case of a BASIC program. Echoes loads the first sector of each file and looks for the token 244 (&F4), which, in BASIC stands for REM. Echoes then stores any characters between this token and the end of line token - 13 (&D) for BASIC. Although designed to be used mainly with BASIC Echoes is not confined to BASIC. The tokens it looks for can be re-defined by running the program TOKENS. This program will allow you to use any characters to represent the start of the extra data e.g. "(" and ")". You could even use the same character to mark both the start and end of the data e.g."-". The idea behind this is that most programmers start their work with some statement of the program e.g. REM Echoes Allan Kelly 22/12/87 - 5/2/88. This can help distinguish progams on disc. Assembling Echoes To assemble Echoes 3 programs are needed, ECHOES, ADD and LINK. ECHOES is the main code but most of the data and subroutines have been separated into ADD since the program will not all fit in memory in one go. Firstly ADD must be run. This will generate a list of variables in the form of a spool file - called L.VARS. Once this has been spooled out ADD will print a saving instruction which you must issue. Once ADD has been run and the two files generated load ECHOES - DO NOT RUN IT. First you must load the variables from ADD so that ECHOES knows where to find it's data and subroutines. To do this use *EXEC L.VARS. Once done run ECHOES. Like ADD this will print a saving instruction which you must issue. You should now have three extra files on your disc, L.DATA, L.CODE and L.VARS. Now Chain LINK, this will link the DATA and CODE files and save the final product as U.ECHOES - this can be renamed to whatever you like by changing the saving instruction in LINK. Before running LINK ensure that the source code for Echoes is not in directory U. If you want you can now delete the L files, VARS, DATA and CODE can be generated again if you need them. L.VARS however is needed if you wish to change the token settings with the TOKENS program. The Tokens program THE tokens that Echoes looks for in a file can be changed. To do this load the program TOKENS. Before running the program, add the file L.VARS generated by ADD by typing *EXEC L.VARS to load the variables - don't worry if you forget TOKENS will remind you. Once you have done this TOKENS will ask for the filename Echoes is saved under. Note: Enter the name of the machine code file NOT the assembly file ECHOES. Once this is done TOKENS will ask for the new start and end tokens. These may be any character you wish and may even be the same character e.g. letters may be head using a dash "- Letter to Fred -" or for files in languages like Forth the tokens may be (and). Using Echoes Depending on how Echoes is saved, the two most common ways of loading it will be, either: 1) As a boot file with Echoes called !BOOT and the disc boot option set to *OPT4,2 or 2) As a general utility, held either on the work disc or a utilities disc and called by the command *ECHOES When Echoes has loaded, it will wait for a key to be pressed. This is to enable the disc to be changed if need be, and/or for the brief instructions to be read. Once a key has been pressed, Echoes will read the disc catalogue and interrogate the files on the disc for extra data i.e. the tokens in use. Echoes will only find the extra data if it is contained in the first sector. The Main Screen This screen displays all the files together with any information. A right arrow points to the "Current File" on which all operations will be performed. Using the up and down arrow keys allows any file to be selected as the current file. Pressing shift with the up or down arrow will move the current file pointer 5 files instead of one. The window will scroll to show all files as they are needed. Keys In total Echoes responds to 17 keys. These are: up and down arrow; tab; space bar; escape; star (*); shift; and the functions keys. Typing * will move you to the bottom window of the main screen to await your command. This will then be issued as an OSCLI command e.g. *CAT. Any response by the command will be displayed in the main window and will remain there until a key is pressed when, provided the key is not *, the file list will return. If the key is * then Echoes will wait for another command. Space Bar is used to change disc. When Space is pressed you will be prompted to insert a new disc and press space. You are then returned to the start up screen as if you had reloaded Echoes - so you will have to press space a third time. If you wish to use another drive you may still use space to change disc. Before pressing space, switch to the new drive as usual, i.e. *DRIVE 2, then press space but ignore the "Insert New Disc", just press space three times. TAB: Echoes has been designed with BASIC in mind. This is reflected in the function of the TAB key. When pressed, Echoes will chain the current file, just as if it had been chained from BASIC. Each of the ten function keys has a special function: f0 - Run MC: this will load and run the current file as if it was a machine code file i.e. equivalent to typing *<filename>. f1 - DUMP: this will dump the current file just as if the OS command *DUMP had been used. f2 - TYPE: this is similar to the OS command *TYPE, as usual it acts on the current file. Unlike the OS *TYPE this TYPE will remove any control characters so no damage will be done to the screen display. This is a great advantage if you type the wrong file! f3 - INFO: this has a similar effect to *INFO but unlike *INFO the data on the current file is not displayed as an enigmatic list of numbers but as a list of information with notes. Any extra data (i.e. REM statements) will be displayed in full. At the bottom of the screen the message "Print ? (Y/N)" will appear. Pressing Y will cause the information to be copied to the printer while pressing N will return you to the main screen. f4 - ACCESS: this will toggle the current file between locked and unlocked with the main screen being updated. f5 - RENAME: once selected a prompt will appear at the bottom of the main screen requesting the new name for the current file. Note: you cannot rename a locked file, you must first unlock it - f4. f6 - DELETE: provided it is not locked, this will delete the current file, before deleting Echoes will ask "Are You Sure ? (Y/N)", press Y to continue and delete the file, N if you have selected the wrong file or have changed your mind. f7 - Load BASIC: this command is very similar to the TAB chain action, but this will only load a BASIC program, it will not run it. f8 - EXEC: this is like the OS command *EXEC. If a language has not been allowed to initialise itself (i.e. Echoes has been loaded as a !BOOT file ), only * commands will be recognised. f9 - PRINT: as you might expect, this will print out the list of files as they are displayed on screen with upto 66 characters of extra data i.e. presuming an 80 character printer, 9 for name, 2 for number, 1 for lock status and two spaces thus leaving 66 characters for the REM. This option is very useful if you wish to have a list of files on the outside of your disc envelope. ESCAPE - normally pressing the Escape Key will cause Echoes to prompt "Abort ? (Y/N)", as usual if you do wish to abort press Y otherwise press N. Echoes will exit with the error "Echoes Exited". Errors If an error - apart from a user generated Escape detailed above - occurs during the running of Echoes e.g. Sector not found, the error message together with the error number will be displayed in the bottom window. Echoes will beep and ask "Acknowledge?", this means Echoes wants you to recognise that a error has occured, to do this just press a key. If you do not do this then after about 25 seconds Echoes will beep again and hence forth beep every 5 seconds until you acknowledge the error by pressing a key. Once an error has been acknowledged Echoes will continue, if you wish to abort Echoes you will have to press Escape as normal. Problems With Echoes Echoes cannot cope with every contingency, it can cope with most though. Perhaps the major limitation on Echoes is that it does not work with either the ADFS or NFS system. This is because Echoes reads the directory track directly and then reads the first sector of the files by accessing the disc controller - usually the 8271. However, Echoes will work with non-Acorn DFS's - my own is a Watford Double Density System using a 1770 controller and this work fine. I have also used Echoes successfully on a genuine Acorn DFS with 8271 - DNFS actually - and on a Master 128 in DFS mode. One problem I have come across with Echoes is when using "auto disc sensing system", i.e. systems which automatically detect whether a disc is 80 or 40 track, or single or double density. This problem is simply cured: ensure that you access the disc before running Echoes so the system knows which type of disc to expect (e.g. use *CAT). Occasionally when running Echoes the screen may become corrupt, to clear the screen pretend to issue and OS command but press return i.e. type * <RETURN>. Sometimes you may find that a file you would expect to have "No Data" has some extra data. Usually if you examine the file you will find that it is less than 1 sector (256 bytes) long. In this case the problem is with the DFS. When saving, the DFS buffers everything and saves in chunks of 256 bytes - one page to the processor, one sector on the disc - this data is usually buffered in the same place all the time but the DFS never cleans this space. Consequently a short file may be saved in the disc with some data from another file. Normally the DFS knows about this and ignores the extra data but Echoes looks at whole sectors and ignores the length of the file - for speed - hence data from an old file may be displayed. Another reason why data messages may appear unexpectedly is if data file, machine code programs, or other languages have the start and end token contained within them by coincidence. To cut down the chances of such a coincidence, if Echoes only finds a starting token without a matching end token it assumes that this is not a genuine remark and ignores the statement. Finally, if Echoes is used on a double catalogue disc, only the first catalogue (i.e. the first 31 files) will be recognized.
00000000 45 63 68 6f 65 73 0d 0d 41 6e 20 49 6e 74 65 6c |Echoes..An Intel| 00000010 6c 69 67 65 6e 74 20 42 6f 6f 74 20 73 79 73 74 |ligent Boot syst| 00000020 65 6d 20 66 6f 72 20 74 68 65 20 42 42 43 20 6d |em for the BBC m| 00000030 69 63 72 6f 20 77 69 74 68 20 44 46 53 20 20 0d |icro with DFS .| 00000040 0d 49 6e 74 72 6f 64 75 63 74 69 6f 6e 0d 0d 45 |.Introduction..E| 00000050 63 68 6f 65 73 20 69 73 20 61 20 73 69 6d 70 6c |choes is a simpl| 00000060 65 20 66 72 6f 6e 74 20 65 6e 64 20 74 6f 20 74 |e front end to t| 00000070 68 65 20 42 42 43 27 73 20 44 46 53 20 73 79 73 |he BBC's DFS sys| 00000080 74 65 6d 2e 20 49 74 20 69 73 20 64 65 73 69 67 |tem. It is desig| 00000090 6e 65 64 20 74 6f 0d 73 69 6d 70 6c 69 66 79 20 |ned to.simplify | 000000a0 74 68 65 20 75 73 65 20 6f 66 20 74 68 65 20 44 |the use of the D| 000000b0 46 53 20 77 68 69 6c 65 20 70 72 6f 76 69 64 69 |FS while providi| 000000c0 6e 67 20 61 63 63 65 73 73 20 74 6f 20 69 6e 63 |ng access to inc| 000000d0 72 65 61 73 65 64 20 66 69 6c 65 0d 69 6e 66 6f |reased file.info| 000000e0 72 6d 61 74 69 6f 6e 2e 0d 0d 57 68 65 6e 20 45 |rmation...When E| 000000f0 63 68 6f 65 73 20 69 73 20 72 75 6e 2c 20 75 73 |choes is run, us| 00000100 75 61 6c 6c 79 20 61 73 20 61 20 62 6f 6f 74 20 |ually as a boot | 00000110 66 69 6c 65 2c 20 69 74 20 72 65 61 64 73 20 74 |file, it reads t| 00000120 68 65 20 64 69 73 63 20 63 61 74 61 6c 6f 67 75 |he disc catalogu| 00000130 65 0d 61 6e 64 20 69 6e 74 65 72 72 6f 67 61 74 |e.and interrogat| 00000140 65 73 20 61 6c 6c 20 74 68 65 20 66 69 6c 65 73 |es all the files| 00000150 20 6f 6e 20 74 68 65 20 64 69 73 63 20 74 6f 20 | on the disc to | 00000160 74 72 79 20 61 6e 64 20 6f 62 74 61 69 6e 20 6d |try and obtain m| 00000170 6f 72 65 0d 69 6e 66 6f 72 6d 61 74 69 6f 6e 2e |ore.information.| 00000180 20 45 61 63 68 20 66 69 6c 65 20 69 73 20 6c 69 | Each file is li| 00000190 73 74 65 64 20 6f 6e 20 73 63 72 65 65 6e 2c 20 |sted on screen, | 000001a0 74 6f 67 65 74 68 65 72 20 77 69 74 68 20 74 68 |together with th| 000001b0 65 20 66 69 6c 65 6e 61 6d 65 2c 20 61 0d 66 69 |e filename, a.fi| 000001c0 6c 65 20 6e 75 6d 62 65 72 20 61 6e 64 20 74 68 |le number and th| 000001d0 65 20 61 63 63 65 73 73 20 73 74 61 74 75 73 20 |e access status | 000001e0 6f 66 20 74 68 65 20 66 69 6c 65 20 28 6c 6f 63 |of the file (loc| 000001f0 6b 65 64 20 28 4c 29 20 6f 72 20 75 6e 6c 6f 63 |ked (L) or unloc| 00000200 6b 65 64 20 28 55 29 29 0d 61 6e 64 20 61 6e 79 |ked (U)).and any| 00000210 20 65 78 74 72 61 20 64 61 74 61 20 74 68 61 74 | extra data that| 00000220 20 63 61 6e 20 62 65 20 6f 62 74 61 69 6e 65 64 | can be obtained| 00000230 2e 20 0d 0d 54 68 69 73 20 65 78 74 72 61 20 64 |. ..This extra d| 00000240 61 74 61 20 69 73 20 61 63 74 75 61 6c 6c 79 20 |ata is actually | 00000250 74 68 65 20 66 69 72 73 74 20 52 45 4d 20 73 74 |the first REM st| 00000260 61 74 65 6d 65 6e 74 20 2d 20 61 73 20 69 6e 20 |atement - as in | 00000270 74 68 65 20 63 61 73 65 20 6f 66 0d 61 20 42 41 |the case of.a BA| 00000280 53 49 43 20 70 72 6f 67 72 61 6d 2e 20 45 63 68 |SIC program. Ech| 00000290 6f 65 73 20 6c 6f 61 64 73 20 74 68 65 20 66 69 |oes loads the fi| 000002a0 72 73 74 20 73 65 63 74 6f 72 20 6f 66 20 65 61 |rst sector of ea| 000002b0 63 68 20 66 69 6c 65 20 61 6e 64 20 6c 6f 6f 6b |ch file and look| 000002c0 73 20 66 6f 72 0d 74 68 65 20 74 6f 6b 65 6e 20 |s for.the token | 000002d0 32 34 34 20 28 26 46 34 29 2c 20 77 68 69 63 68 |244 (&F4), which| 000002e0 2c 20 69 6e 20 42 41 53 49 43 20 73 74 61 6e 64 |, in BASIC stand| 000002f0 73 20 66 6f 72 20 52 45 4d 2e 20 45 63 68 6f 65 |s for REM. Echoe| 00000300 73 20 74 68 65 6e 20 73 74 6f 72 65 73 0d 61 6e |s then stores.an| 00000310 79 20 63 68 61 72 61 63 74 65 72 73 20 62 65 74 |y characters bet| 00000320 77 65 65 6e 20 74 68 69 73 20 74 6f 6b 65 6e 20 |ween this token | 00000330 61 6e 64 20 74 68 65 20 65 6e 64 20 6f 66 20 6c |and the end of l| 00000340 69 6e 65 20 74 6f 6b 65 6e 20 2d 20 31 33 20 28 |ine token - 13 (| 00000350 26 44 29 20 66 6f 72 0d 42 41 53 49 43 2e 0d 0d |&D) for.BASIC...| 00000360 41 6c 74 68 6f 75 67 68 20 64 65 73 69 67 6e 65 |Although designe| 00000370 64 20 74 6f 20 62 65 20 75 73 65 64 20 6d 61 69 |d to be used mai| 00000380 6e 6c 79 20 77 69 74 68 20 42 41 53 49 43 20 45 |nly with BASIC E| 00000390 63 68 6f 65 73 20 69 73 20 6e 6f 74 20 63 6f 6e |choes is not con| 000003a0 66 69 6e 65 64 20 74 6f 0d 42 41 53 49 43 2e 20 |fined to.BASIC. | 000003b0 54 68 65 20 74 6f 6b 65 6e 73 20 69 74 20 6c 6f |The tokens it lo| 000003c0 6f 6b 73 20 66 6f 72 20 63 61 6e 20 62 65 20 72 |oks for can be r| 000003d0 65 2d 64 65 66 69 6e 65 64 20 62 79 20 72 75 6e |e-defined by run| 000003e0 6e 69 6e 67 20 74 68 65 20 70 72 6f 67 72 61 6d |ning the program| 000003f0 0d 54 4f 4b 45 4e 53 2e 20 54 68 69 73 20 70 72 |.TOKENS. This pr| 00000400 6f 67 72 61 6d 20 77 69 6c 6c 20 61 6c 6c 6f 77 |ogram will allow| 00000410 20 79 6f 75 20 74 6f 20 75 73 65 20 61 6e 79 20 | you to use any | 00000420 63 68 61 72 61 63 74 65 72 73 20 74 6f 20 72 65 |characters to re| 00000430 70 72 65 73 65 6e 74 20 74 68 65 0d 73 74 61 72 |present the.star| 00000440 74 20 6f 66 20 74 68 65 20 65 78 74 72 61 20 64 |t of the extra d| 00000450 61 74 61 20 65 2e 67 2e 20 22 28 22 20 61 6e 64 |ata e.g. "(" and| 00000460 20 22 29 22 2e 20 59 6f 75 20 63 6f 75 6c 64 20 | ")". You could | 00000470 65 76 65 6e 20 75 73 65 20 74 68 65 20 73 61 6d |even use the sam| 00000480 65 0d 63 68 61 72 61 63 74 65 72 20 74 6f 20 6d |e.character to m| 00000490 61 72 6b 20 62 6f 74 68 20 74 68 65 20 73 74 61 |ark both the sta| 000004a0 72 74 20 61 6e 64 20 65 6e 64 20 6f 66 20 74 68 |rt and end of th| 000004b0 65 20 64 61 74 61 20 65 2e 67 2e 22 2d 22 2e 0d |e data e.g."-"..| 000004c0 0d 54 68 65 20 69 64 65 61 20 62 65 68 69 6e 64 |.The idea behind| 000004d0 20 74 68 69 73 20 69 73 20 74 68 61 74 20 6d 6f | this is that mo| 000004e0 73 74 20 70 72 6f 67 72 61 6d 6d 65 72 73 20 73 |st programmers s| 000004f0 74 61 72 74 20 74 68 65 69 72 20 77 6f 72 6b 20 |tart their work | 00000500 77 69 74 68 20 73 6f 6d 65 0d 73 74 61 74 65 6d |with some.statem| 00000510 65 6e 74 20 6f 66 20 74 68 65 20 70 72 6f 67 72 |ent of the progr| 00000520 61 6d 20 65 2e 67 2e 20 52 45 4d 20 45 63 68 6f |am e.g. REM Echo| 00000530 65 73 20 41 6c 6c 61 6e 20 4b 65 6c 6c 79 20 32 |es Allan Kelly 2| 00000540 32 2f 31 32 2f 38 37 20 2d 20 35 2f 32 2f 38 38 |2/12/87 - 5/2/88| 00000550 2e 0d 54 68 69 73 20 63 61 6e 20 68 65 6c 70 20 |..This can help | 00000560 64 69 73 74 69 6e 67 75 69 73 68 20 70 72 6f 67 |distinguish prog| 00000570 61 6d 73 20 6f 6e 20 64 69 73 63 2e 0d 0d 41 73 |ams on disc...As| 00000580 73 65 6d 62 6c 69 6e 67 20 45 63 68 6f 65 73 0d |sembling Echoes.| 00000590 0d 54 6f 20 61 73 73 65 6d 62 6c 65 20 45 63 68 |.To assemble Ech| 000005a0 6f 65 73 20 33 20 70 72 6f 67 72 61 6d 73 20 61 |oes 3 programs a| 000005b0 72 65 20 6e 65 65 64 65 64 2c 20 45 43 48 4f 45 |re needed, ECHOE| 000005c0 53 2c 20 41 44 44 20 61 6e 64 20 4c 49 4e 4b 2e |S, ADD and LINK.| 000005d0 20 45 43 48 4f 45 53 20 69 73 0d 74 68 65 20 6d | ECHOES is.the m| 000005e0 61 69 6e 20 63 6f 64 65 20 62 75 74 20 6d 6f 73 |ain code but mos| 000005f0 74 20 6f 66 20 74 68 65 20 64 61 74 61 20 61 6e |t of the data an| 00000600 64 20 73 75 62 72 6f 75 74 69 6e 65 73 20 68 61 |d subroutines ha| 00000610 76 65 20 62 65 65 6e 20 73 65 70 61 72 61 74 65 |ve been separate| 00000620 64 0d 69 6e 74 6f 20 41 44 44 20 73 69 6e 63 65 |d.into ADD since| 00000630 20 74 68 65 20 70 72 6f 67 72 61 6d 20 77 69 6c | the program wil| 00000640 6c 20 6e 6f 74 20 61 6c 6c 20 66 69 74 20 69 6e |l not all fit in| 00000650 20 6d 65 6d 6f 72 79 20 69 6e 20 6f 6e 65 20 67 | memory in one g| 00000660 6f 2e 0d 0d 46 69 72 73 74 6c 79 20 41 44 44 20 |o...Firstly ADD | 00000670 6d 75 73 74 20 62 65 20 72 75 6e 2e 20 54 68 69 |must be run. Thi| 00000680 73 20 77 69 6c 6c 20 67 65 6e 65 72 61 74 65 20 |s will generate | 00000690 61 20 6c 69 73 74 20 6f 66 20 76 61 72 69 61 62 |a list of variab| 000006a0 6c 65 73 20 69 6e 20 74 68 65 0d 66 6f 72 6d 20 |les in the.form | 000006b0 6f 66 20 61 20 73 70 6f 6f 6c 20 66 69 6c 65 20 |of a spool file | 000006c0 2d 20 63 61 6c 6c 65 64 20 4c 2e 56 41 52 53 2e |- called L.VARS.| 000006d0 20 4f 6e 63 65 20 74 68 69 73 20 68 61 73 20 62 | Once this has b| 000006e0 65 65 6e 20 73 70 6f 6f 6c 65 64 20 6f 75 74 20 |een spooled out | 000006f0 41 44 44 0d 77 69 6c 6c 20 70 72 69 6e 74 20 61 |ADD.will print a| 00000700 20 73 61 76 69 6e 67 20 69 6e 73 74 72 75 63 74 | saving instruct| 00000710 69 6f 6e 20 77 68 69 63 68 20 79 6f 75 20 6d 75 |ion which you mu| 00000720 73 74 20 69 73 73 75 65 2e 0d 0d 4f 6e 63 65 20 |st issue...Once | 00000730 41 44 44 20 68 61 73 20 62 65 65 6e 20 72 75 6e |ADD has been run| 00000740 20 61 6e 64 20 74 68 65 20 74 77 6f 20 66 69 6c | and the two fil| 00000750 65 73 20 67 65 6e 65 72 61 74 65 64 20 6c 6f 61 |es generated loa| 00000760 64 20 45 43 48 4f 45 53 20 2d 20 44 4f 20 4e 4f |d ECHOES - DO NO| 00000770 54 20 52 55 4e 0d 49 54 2e 20 46 69 72 73 74 20 |T RUN.IT. First | 00000780 79 6f 75 20 6d 75 73 74 20 6c 6f 61 64 20 74 68 |you must load th| 00000790 65 20 76 61 72 69 61 62 6c 65 73 20 66 72 6f 6d |e variables from| 000007a0 20 41 44 44 20 73 6f 20 74 68 61 74 20 45 43 48 | ADD so that ECH| 000007b0 4f 45 53 20 6b 6e 6f 77 73 20 77 68 65 72 65 0d |OES knows where.| 000007c0 74 6f 20 66 69 6e 64 20 69 74 27 73 20 64 61 74 |to find it's dat| 000007d0 61 20 61 6e 64 20 73 75 62 72 6f 75 74 69 6e 65 |a and subroutine| 000007e0 73 2e 20 54 6f 20 64 6f 20 74 68 69 73 20 75 73 |s. To do this us| 000007f0 65 20 2a 45 58 45 43 20 4c 2e 56 41 52 53 2e 20 |e *EXEC L.VARS. | 00000800 4f 6e 63 65 20 64 6f 6e 65 0d 72 75 6e 20 45 43 |Once done.run EC| 00000810 48 4f 45 53 2e 20 4c 69 6b 65 20 41 44 44 20 74 |HOES. Like ADD t| 00000820 68 69 73 20 77 69 6c 6c 20 70 72 69 6e 74 20 61 |his will print a| 00000830 20 73 61 76 69 6e 67 20 69 6e 73 74 72 75 63 74 | saving instruct| 00000840 69 6f 6e 20 77 68 69 63 68 20 79 6f 75 20 6d 75 |ion which you mu| 00000850 73 74 0d 69 73 73 75 65 2e 0d 0d 59 6f 75 20 73 |st.issue...You s| 00000860 68 6f 75 6c 64 20 6e 6f 77 20 68 61 76 65 20 74 |hould now have t| 00000870 68 72 65 65 20 65 78 74 72 61 20 66 69 6c 65 73 |hree extra files| 00000880 20 6f 6e 20 79 6f 75 72 20 64 69 73 63 2c 20 4c | on your disc, L| 00000890 2e 44 41 54 41 2c 20 4c 2e 43 4f 44 45 20 61 6e |.DATA, L.CODE an| 000008a0 64 0d 4c 2e 56 41 52 53 2e 20 4e 6f 77 20 43 68 |d.L.VARS. Now Ch| 000008b0 61 69 6e 20 4c 49 4e 4b 2c 20 74 68 69 73 20 77 |ain LINK, this w| 000008c0 69 6c 6c 20 6c 69 6e 6b 20 74 68 65 20 44 41 54 |ill link the DAT| 000008d0 41 20 61 6e 64 20 43 4f 44 45 20 66 69 6c 65 73 |A and CODE files| 000008e0 20 61 6e 64 20 73 61 76 65 0d 74 68 65 20 66 69 | and save.the fi| 000008f0 6e 61 6c 20 70 72 6f 64 75 63 74 20 61 73 20 55 |nal product as U| 00000900 2e 45 43 48 4f 45 53 20 2d 20 74 68 69 73 20 63 |.ECHOES - this c| 00000910 61 6e 20 62 65 20 72 65 6e 61 6d 65 64 20 74 6f |an be renamed to| 00000920 20 77 68 61 74 65 76 65 72 20 79 6f 75 20 6c 69 | whatever you li| 00000930 6b 65 0d 62 79 20 63 68 61 6e 67 69 6e 67 20 74 |ke.by changing t| 00000940 68 65 20 73 61 76 69 6e 67 20 69 6e 73 74 72 75 |he saving instru| 00000950 63 74 69 6f 6e 20 69 6e 20 4c 49 4e 4b 2e 20 42 |ction in LINK. B| 00000960 65 66 6f 72 65 20 72 75 6e 6e 69 6e 67 20 4c 49 |efore running LI| 00000970 4e 4b 20 65 6e 73 75 72 65 0d 74 68 61 74 20 74 |NK ensure.that t| 00000980 68 65 20 73 6f 75 72 63 65 20 63 6f 64 65 20 66 |he source code f| 00000990 6f 72 20 45 63 68 6f 65 73 20 69 73 20 6e 6f 74 |or Echoes is not| 000009a0 20 69 6e 20 64 69 72 65 63 74 6f 72 79 20 55 2e | in directory U.| 000009b0 20 0d 0d 49 66 20 79 6f 75 20 77 61 6e 74 20 79 | ..If you want y| 000009c0 6f 75 20 63 61 6e 20 6e 6f 77 20 64 65 6c 65 74 |ou can now delet| 000009d0 65 20 74 68 65 20 4c 20 66 69 6c 65 73 2c 20 56 |e the L files, V| 000009e0 41 52 53 2c 20 44 41 54 41 20 61 6e 64 20 43 4f |ARS, DATA and CO| 000009f0 44 45 20 63 61 6e 20 62 65 0d 67 65 6e 65 72 61 |DE can be.genera| 00000a00 74 65 64 20 61 67 61 69 6e 20 69 66 20 79 6f 75 |ted again if you| 00000a10 20 6e 65 65 64 20 74 68 65 6d 2e 20 4c 2e 56 41 | need them. L.VA| 00000a20 52 53 20 68 6f 77 65 76 65 72 20 69 73 20 6e 65 |RS however is ne| 00000a30 65 64 65 64 20 69 66 20 79 6f 75 20 77 69 73 68 |eded if you wish| 00000a40 20 74 6f 0d 63 68 61 6e 67 65 20 74 68 65 20 74 | to.change the t| 00000a50 6f 6b 65 6e 20 73 65 74 74 69 6e 67 73 20 77 69 |oken settings wi| 00000a60 74 68 20 74 68 65 20 54 4f 4b 45 4e 53 20 70 72 |th the TOKENS pr| 00000a70 6f 67 72 61 6d 2e 0d 0d 54 68 65 20 54 6f 6b 65 |ogram...The Toke| 00000a80 6e 73 20 70 72 6f 67 72 61 6d 0d 0d 54 48 45 20 |ns program..THE | 00000a90 74 6f 6b 65 6e 73 20 74 68 61 74 20 45 63 68 6f |tokens that Echo| 00000aa0 65 73 20 6c 6f 6f 6b 73 20 66 6f 72 20 69 6e 20 |es looks for in | 00000ab0 61 20 66 69 6c 65 20 63 61 6e 20 62 65 20 63 68 |a file can be ch| 00000ac0 61 6e 67 65 64 2e 20 54 6f 20 64 6f 20 74 68 69 |anged. To do thi| 00000ad0 73 20 6c 6f 61 64 0d 74 68 65 20 70 72 6f 67 72 |s load.the progr| 00000ae0 61 6d 20 54 4f 4b 45 4e 53 2e 20 42 65 66 6f 72 |am TOKENS. Befor| 00000af0 65 20 72 75 6e 6e 69 6e 67 20 74 68 65 20 70 72 |e running the pr| 00000b00 6f 67 72 61 6d 2c 20 20 61 64 64 20 74 68 65 20 |ogram, add the | 00000b10 66 69 6c 65 20 4c 2e 56 41 52 53 0d 67 65 6e 65 |file L.VARS.gene| 00000b20 72 61 74 65 64 20 62 79 20 41 44 44 20 62 79 20 |rated by ADD by | 00000b30 74 79 70 69 6e 67 20 2a 45 58 45 43 20 4c 2e 56 |typing *EXEC L.V| 00000b40 41 52 53 20 74 6f 20 6c 6f 61 64 20 74 68 65 20 |ARS to load the | 00000b50 76 61 72 69 61 62 6c 65 73 20 2d 20 64 6f 6e 27 |variables - don'| 00000b60 74 0d 77 6f 72 72 79 20 69 66 20 79 6f 75 20 66 |t.worry if you f| 00000b70 6f 72 67 65 74 20 54 4f 4b 45 4e 53 20 77 69 6c |orget TOKENS wil| 00000b80 6c 20 72 65 6d 69 6e 64 20 79 6f 75 2e 0d 0d 4f |l remind you...O| 00000b90 6e 63 65 20 79 6f 75 20 68 61 76 65 20 64 6f 6e |nce you have don| 00000ba0 65 20 74 68 69 73 20 54 4f 4b 45 4e 53 20 77 69 |e this TOKENS wi| 00000bb0 6c 6c 20 61 73 6b 20 66 6f 72 20 74 68 65 20 66 |ll ask for the f| 00000bc0 69 6c 65 6e 61 6d 65 20 45 63 68 6f 65 73 20 69 |ilename Echoes i| 00000bd0 73 20 73 61 76 65 64 0d 75 6e 64 65 72 2e 20 4e |s saved.under. N| 00000be0 6f 74 65 3a 20 45 6e 74 65 72 20 74 68 65 20 6e |ote: Enter the n| 00000bf0 61 6d 65 20 6f 66 20 74 68 65 20 6d 61 63 68 69 |ame of the machi| 00000c00 6e 65 20 63 6f 64 65 20 66 69 6c 65 20 4e 4f 54 |ne code file NOT| 00000c10 20 74 68 65 20 61 73 73 65 6d 62 6c 79 20 66 69 | the assembly fi| 00000c20 6c 65 0d 45 43 48 4f 45 53 2e 0d 0d 4f 6e 63 65 |le.ECHOES...Once| 00000c30 20 74 68 69 73 20 69 73 20 64 6f 6e 65 20 54 4f | this is done TO| 00000c40 4b 45 4e 53 20 77 69 6c 6c 20 61 73 6b 20 66 6f |KENS will ask fo| 00000c50 72 20 74 68 65 20 6e 65 77 20 73 74 61 72 74 20 |r the new start | 00000c60 61 6e 64 20 65 6e 64 20 74 6f 6b 65 6e 73 2e 20 |and end tokens. | 00000c70 54 68 65 73 65 0d 6d 61 79 20 62 65 20 61 6e 79 |These.may be any| 00000c80 20 63 68 61 72 61 63 74 65 72 20 79 6f 75 20 77 | character you w| 00000c90 69 73 68 20 61 6e 64 20 6d 61 79 20 65 76 65 6e |ish and may even| 00000ca0 20 62 65 20 74 68 65 20 73 61 6d 65 20 63 68 61 | be the same cha| 00000cb0 72 61 63 74 65 72 20 65 2e 67 2e 0d 6c 65 74 74 |racter e.g..lett| 00000cc0 65 72 73 20 6d 61 79 20 62 65 20 68 65 61 64 20 |ers may be head | 00000cd0 75 73 69 6e 67 20 61 20 64 61 73 68 20 22 2d 20 |using a dash "- | 00000ce0 4c 65 74 74 65 72 20 74 6f 20 46 72 65 64 20 2d |Letter to Fred -| 00000cf0 22 20 6f 72 20 66 6f 72 20 66 69 6c 65 73 20 69 |" or for files i| 00000d00 6e 0d 6c 61 6e 67 75 61 67 65 73 20 6c 69 6b 65 |n.languages like| 00000d10 20 46 6f 72 74 68 20 74 68 65 20 74 6f 6b 65 6e | Forth the token| 00000d20 73 20 6d 61 79 20 62 65 20 28 61 6e 64 29 2e 0d |s may be (and)..| 00000d30 0d 55 73 69 6e 67 20 45 63 68 6f 65 73 0d 0d 44 |.Using Echoes..D| 00000d40 65 70 65 6e 64 69 6e 67 20 6f 6e 20 68 6f 77 20 |epending on how | 00000d50 45 63 68 6f 65 73 20 69 73 20 73 61 76 65 64 2c |Echoes is saved,| 00000d60 20 74 68 65 20 74 77 6f 20 6d 6f 73 74 20 63 6f | the two most co| 00000d70 6d 6d 6f 6e 20 77 61 79 73 20 6f 66 20 6c 6f 61 |mmon ways of loa| 00000d80 64 69 6e 67 20 69 74 0d 77 69 6c 6c 20 62 65 2c |ding it.will be,| 00000d90 20 65 69 74 68 65 72 3a 20 20 0d 20 31 29 20 41 | either: . 1) A| 00000da0 73 20 61 20 62 6f 6f 74 20 66 69 6c 65 20 77 69 |s a boot file wi| 00000db0 74 68 20 45 63 68 6f 65 73 20 63 61 6c 6c 65 64 |th Echoes called| 00000dc0 20 21 42 4f 4f 54 20 61 6e 64 20 74 68 65 20 64 | !BOOT and the d| 00000dd0 69 73 63 20 62 6f 6f 74 20 6f 70 74 69 6f 6e 20 |isc boot option | 00000de0 73 65 74 0d 74 6f 20 2a 4f 50 54 34 2c 32 20 6f |set.to *OPT4,2 o| 00000df0 72 0d 20 32 29 20 41 73 20 61 20 67 65 6e 65 72 |r. 2) As a gener| 00000e00 61 6c 20 75 74 69 6c 69 74 79 2c 20 68 65 6c 64 |al utility, held| 00000e10 20 65 69 74 68 65 72 20 6f 6e 20 74 68 65 20 77 | either on the w| 00000e20 6f 72 6b 20 64 69 73 63 20 6f 72 20 61 20 75 74 |ork disc or a ut| 00000e30 69 6c 69 74 69 65 73 20 64 69 73 63 0d 61 6e 64 |ilities disc.and| 00000e40 20 63 61 6c 6c 65 64 20 62 79 20 74 68 65 20 63 | called by the c| 00000e50 6f 6d 6d 61 6e 64 20 2a 45 43 48 4f 45 53 0d 0d |ommand *ECHOES..| 00000e60 57 68 65 6e 20 45 63 68 6f 65 73 20 68 61 73 20 |When Echoes has | 00000e70 6c 6f 61 64 65 64 2c 20 69 74 20 77 69 6c 6c 20 |loaded, it will | 00000e80 77 61 69 74 20 66 6f 72 20 61 20 6b 65 79 20 74 |wait for a key t| 00000e90 6f 20 62 65 20 70 72 65 73 73 65 64 2e 20 54 68 |o be pressed. Th| 00000ea0 69 73 20 69 73 20 74 6f 0d 65 6e 61 62 6c 65 20 |is is to.enable | 00000eb0 74 68 65 20 64 69 73 63 20 74 6f 20 62 65 20 63 |the disc to be c| 00000ec0 68 61 6e 67 65 64 20 69 66 20 6e 65 65 64 20 62 |hanged if need b| 00000ed0 65 2c 20 61 6e 64 2f 6f 72 20 66 6f 72 20 74 68 |e, and/or for th| 00000ee0 65 20 62 72 69 65 66 0d 69 6e 73 74 72 75 63 74 |e brief.instruct| 00000ef0 69 6f 6e 73 20 74 6f 20 62 65 20 72 65 61 64 2e |ions to be read.| 00000f00 0d 0d 4f 6e 63 65 20 61 20 6b 65 79 20 68 61 73 |..Once a key has| 00000f10 20 62 65 65 6e 20 70 72 65 73 73 65 64 2c 20 45 | been pressed, E| 00000f20 63 68 6f 65 73 20 77 69 6c 6c 20 72 65 61 64 20 |choes will read | 00000f30 74 68 65 20 64 69 73 63 20 63 61 74 61 6c 6f 67 |the disc catalog| 00000f40 75 65 20 61 6e 64 0d 69 6e 74 65 72 72 6f 67 61 |ue and.interroga| 00000f50 74 65 20 74 68 65 20 66 69 6c 65 73 20 6f 6e 20 |te the files on | 00000f60 74 68 65 20 64 69 73 63 20 66 6f 72 20 65 78 74 |the disc for ext| 00000f70 72 61 20 64 61 74 61 20 69 2e 65 2e 20 74 68 65 |ra data i.e. the| 00000f80 20 74 6f 6b 65 6e 73 20 69 6e 20 75 73 65 2e 0d | tokens in use..| 00000f90 45 63 68 6f 65 73 20 77 69 6c 6c 20 6f 6e 6c 79 |Echoes will only| 00000fa0 20 66 69 6e 64 20 74 68 65 20 65 78 74 72 61 20 | find the extra | 00000fb0 64 61 74 61 20 69 66 20 69 74 20 69 73 20 63 6f |data if it is co| 00000fc0 6e 74 61 69 6e 65 64 20 69 6e 20 74 68 65 20 66 |ntained in the f| 00000fd0 69 72 73 74 0d 73 65 63 74 6f 72 2e 0d 0d 54 68 |irst.sector...Th| 00000fe0 65 20 4d 61 69 6e 20 53 63 72 65 65 6e 0d 0d 54 |e Main Screen..T| 00000ff0 68 69 73 20 73 63 72 65 65 6e 20 64 69 73 70 6c |his screen displ| 00001000 61 79 73 20 61 6c 6c 20 74 68 65 20 66 69 6c 65 |ays all the file| 00001010 73 20 74 6f 67 65 74 68 65 72 20 77 69 74 68 20 |s together with | 00001020 61 6e 79 20 69 6e 66 6f 72 6d 61 74 69 6f 6e 2e |any information.| 00001030 20 41 20 72 69 67 68 74 0d 61 72 72 6f 77 20 70 | A right.arrow p| 00001040 6f 69 6e 74 73 20 74 6f 20 74 68 65 20 22 43 75 |oints to the "Cu| 00001050 72 72 65 6e 74 20 46 69 6c 65 22 20 6f 6e 20 77 |rrent File" on w| 00001060 68 69 63 68 20 61 6c 6c 20 6f 70 65 72 61 74 69 |hich all operati| 00001070 6f 6e 73 20 77 69 6c 6c 20 62 65 0d 70 65 72 66 |ons will be.perf| 00001080 6f 72 6d 65 64 2e 20 55 73 69 6e 67 20 74 68 65 |ormed. Using the| 00001090 20 75 70 20 61 6e 64 20 64 6f 77 6e 20 61 72 72 | up and down arr| 000010a0 6f 77 20 6b 65 79 73 20 61 6c 6c 6f 77 73 20 61 |ow keys allows a| 000010b0 6e 79 20 66 69 6c 65 20 74 6f 20 62 65 20 73 65 |ny file to be se| 000010c0 6c 65 63 74 65 64 0d 61 73 20 74 68 65 20 63 75 |lected.as the cu| 000010d0 72 72 65 6e 74 20 66 69 6c 65 2e 20 50 72 65 73 |rrent file. Pres| 000010e0 73 69 6e 67 20 73 68 69 66 74 20 77 69 74 68 20 |sing shift with | 000010f0 74 68 65 20 75 70 20 6f 72 20 64 6f 77 6e 20 61 |the up or down a| 00001100 72 72 6f 77 20 77 69 6c 6c 20 6d 6f 76 65 0d 74 |rrow will move.t| 00001110 68 65 20 63 75 72 72 65 6e 74 20 66 69 6c 65 20 |he current file | 00001120 70 6f 69 6e 74 65 72 20 35 20 66 69 6c 65 73 20 |pointer 5 files | 00001130 69 6e 73 74 65 61 64 20 6f 66 20 6f 6e 65 2e 20 |instead of one. | 00001140 54 68 65 20 77 69 6e 64 6f 77 20 77 69 6c 6c 20 |The window will | 00001150 73 63 72 6f 6c 6c 20 74 6f 0d 73 68 6f 77 20 61 |scroll to.show a| 00001160 6c 6c 20 66 69 6c 65 73 20 61 73 20 74 68 65 79 |ll files as they| 00001170 20 61 72 65 20 6e 65 65 64 65 64 2e 0d 0d 4b 65 | are needed...Ke| 00001180 79 73 0d 0d 49 6e 20 74 6f 74 61 6c 20 45 63 68 |ys..In total Ech| 00001190 6f 65 73 20 72 65 73 70 6f 6e 64 73 20 74 6f 20 |oes responds to | 000011a0 31 37 20 6b 65 79 73 2e 20 54 68 65 73 65 20 61 |17 keys. These a| 000011b0 72 65 3a 20 75 70 20 61 6e 64 20 64 6f 77 6e 20 |re: up and down | 000011c0 61 72 72 6f 77 3b 20 74 61 62 3b 0d 73 70 61 63 |arrow; tab;.spac| 000011d0 65 20 62 61 72 3b 20 65 73 63 61 70 65 3b 20 73 |e bar; escape; s| 000011e0 74 61 72 20 28 2a 29 3b 20 73 68 69 66 74 3b 20 |tar (*); shift; | 000011f0 61 6e 64 20 74 68 65 20 66 75 6e 63 74 69 6f 6e |and the function| 00001200 73 20 6b 65 79 73 2e 0d 0d 54 79 70 69 6e 67 20 |s keys...Typing | 00001210 2a 20 77 69 6c 6c 20 6d 6f 76 65 20 79 6f 75 20 |* will move you | 00001220 74 6f 20 74 68 65 20 62 6f 74 74 6f 6d 20 77 69 |to the bottom wi| 00001230 6e 64 6f 77 20 6f 66 20 74 68 65 20 6d 61 69 6e |ndow of the main| 00001240 20 73 63 72 65 65 6e 20 74 6f 20 61 77 61 69 74 | screen to await| 00001250 0d 79 6f 75 72 20 63 6f 6d 6d 61 6e 64 2e 20 54 |.your command. T| 00001260 68 69 73 20 77 69 6c 6c 20 74 68 65 6e 20 62 65 |his will then be| 00001270 20 69 73 73 75 65 64 20 61 73 20 61 6e 20 4f 53 | issued as an OS| 00001280 43 4c 49 20 63 6f 6d 6d 61 6e 64 20 65 2e 67 2e |CLI command e.g.| 00001290 20 2a 43 41 54 2e 20 41 6e 79 0d 72 65 73 70 6f | *CAT. Any.respo| 000012a0 6e 73 65 20 62 79 20 74 68 65 20 63 6f 6d 6d 61 |nse by the comma| 000012b0 6e 64 20 77 69 6c 6c 20 62 65 20 64 69 73 70 6c |nd will be displ| 000012c0 61 79 65 64 20 69 6e 20 74 68 65 20 6d 61 69 6e |ayed in the main| 000012d0 20 77 69 6e 64 6f 77 20 61 6e 64 20 77 69 6c 6c | window and will| 000012e0 0d 72 65 6d 61 69 6e 20 74 68 65 72 65 20 75 6e |.remain there un| 000012f0 74 69 6c 20 61 20 6b 65 79 20 69 73 20 70 72 65 |til a key is pre| 00001300 73 73 65 64 20 77 68 65 6e 2c 20 70 72 6f 76 69 |ssed when, provi| 00001310 64 65 64 20 74 68 65 20 6b 65 79 20 69 73 20 6e |ded the key is n| 00001320 6f 74 20 2a 2c 20 74 68 65 0d 66 69 6c 65 20 6c |ot *, the.file l| 00001330 69 73 74 20 77 69 6c 6c 20 72 65 74 75 72 6e 2e |ist will return.| 00001340 20 49 66 20 74 68 65 20 6b 65 79 20 69 73 20 2a | If the key is *| 00001350 20 74 68 65 6e 20 45 63 68 6f 65 73 20 77 69 6c | then Echoes wil| 00001360 6c 20 77 61 69 74 20 66 6f 72 20 61 6e 6f 74 68 |l wait for anoth| 00001370 65 72 0d 63 6f 6d 6d 61 6e 64 2e 0d 0d 53 70 61 |er.command...Spa| 00001380 63 65 20 42 61 72 20 69 73 20 75 73 65 64 20 74 |ce Bar is used t| 00001390 6f 20 63 68 61 6e 67 65 20 64 69 73 63 2e 20 57 |o change disc. W| 000013a0 68 65 6e 20 53 70 61 63 65 20 69 73 20 70 72 65 |hen Space is pre| 000013b0 73 73 65 64 20 79 6f 75 20 77 69 6c 6c 20 62 65 |ssed you will be| 000013c0 0d 70 72 6f 6d 70 74 65 64 20 74 6f 20 69 6e 73 |.prompted to ins| 000013d0 65 72 74 20 61 20 6e 65 77 20 64 69 73 63 20 61 |ert a new disc a| 000013e0 6e 64 20 70 72 65 73 73 20 73 70 61 63 65 2e 20 |nd press space. | 000013f0 59 6f 75 20 61 72 65 20 74 68 65 6e 20 72 65 74 |You are then ret| 00001400 75 72 6e 65 64 20 74 6f 0d 74 68 65 20 73 74 61 |urned to.the sta| 00001410 72 74 20 75 70 20 73 63 72 65 65 6e 20 61 73 20 |rt up screen as | 00001420 69 66 20 79 6f 75 20 68 61 64 20 72 65 6c 6f 61 |if you had reloa| 00001430 64 65 64 20 45 63 68 6f 65 73 20 2d 20 73 6f 20 |ded Echoes - so | 00001440 79 6f 75 20 77 69 6c 6c 20 68 61 76 65 20 74 6f |you will have to| 00001450 0d 70 72 65 73 73 20 73 70 61 63 65 20 61 20 74 |.press space a t| 00001460 68 69 72 64 20 74 69 6d 65 2e 20 49 66 20 79 6f |hird time. If yo| 00001470 75 20 77 69 73 68 20 74 6f 20 75 73 65 20 61 6e |u wish to use an| 00001480 6f 74 68 65 72 20 64 72 69 76 65 20 79 6f 75 20 |other drive you | 00001490 6d 61 79 20 73 74 69 6c 6c 0d 75 73 65 20 73 70 |may still.use sp| 000014a0 61 63 65 20 74 6f 20 63 68 61 6e 67 65 20 64 69 |ace to change di| 000014b0 73 63 2e 20 42 65 66 6f 72 65 20 70 72 65 73 73 |sc. 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Pressi| 00001960 6e 67 20 59 20 77 69 6c 6c 20 63 61 75 73 65 20 |ng Y will cause | 00001970 74 68 65 20 69 6e 66 6f 72 6d 61 74 69 6f 6e 20 |the information | 00001980 74 6f 20 62 65 20 63 6f 70 69 65 64 20 74 6f 0d |to be copied to.| 00001990 74 68 65 20 70 72 69 6e 74 65 72 20 77 68 69 6c |the printer whil| 000019a0 65 20 70 72 65 73 73 69 6e 67 20 4e 20 77 69 6c |e pressing N wil| 000019b0 6c 20 72 65 74 75 72 6e 20 79 6f 75 20 74 6f 20 |l return you to | 000019c0 74 68 65 20 6d 61 69 6e 20 73 63 72 65 65 6e 2e |the main screen.| 000019d0 0d 66 34 20 2d 20 41 43 43 45 53 53 3a 20 74 68 |.f4 - ACCESS: th| 000019e0 69 73 20 77 69 6c 6c 20 74 6f 67 67 6c 65 20 74 |is will toggle t| 000019f0 68 65 20 63 75 72 72 65 6e 74 20 66 69 6c 65 20 |he current file | 00001a00 62 65 74 77 65 65 6e 20 6c 6f 63 6b 65 64 20 61 |between locked a| 00001a10 6e 64 20 75 6e 6c 6f 63 6b 65 64 0d 77 69 74 68 |nd unlocked.with| 00001a20 20 74 68 65 20 6d 61 69 6e 20 73 63 72 65 65 6e | the main screen| 00001a30 20 62 65 69 6e 67 20 75 70 64 61 74 65 64 2e 0d | being updated..| 00001a40 66 35 20 2d 20 52 45 4e 41 4d 45 3a 20 6f 6e 63 |f5 - RENAME: onc| 00001a50 65 20 73 65 6c 65 63 74 65 64 20 61 20 70 72 6f |e selected a pro| 00001a60 6d 70 74 20 77 69 6c 6c 20 61 70 70 65 61 72 20 |mpt will appear | 00001a70 61 74 20 74 68 65 20 62 6f 74 74 6f 6d 20 6f 66 |at the bottom of| 00001a80 20 74 68 65 20 6d 61 69 6e 0d 73 63 72 65 65 6e | the main.screen| 00001a90 20 72 65 71 75 65 73 74 69 6e 67 20 74 68 65 20 | requesting the | 00001aa0 6e 65 77 20 6e 61 6d 65 20 66 6f 72 20 74 68 65 |new name for the| 00001ab0 20 63 75 72 72 65 6e 74 20 66 69 6c 65 2e 20 4e | current file. N| 00001ac0 6f 74 65 3a 20 79 6f 75 20 63 61 6e 6e 6f 74 0d |ote: you cannot.| 00001ad0 72 65 6e 61 6d 65 20 61 20 6c 6f 63 6b 65 64 20 |rename a locked | 00001ae0 66 69 6c 65 2c 20 79 6f 75 20 6d 75 73 74 20 66 |file, you must f| 00001af0 69 72 73 74 20 75 6e 6c 6f 63 6b 20 69 74 20 2d |irst unlock it -| 00001b00 20 66 34 2e 20 0d 66 36 20 2d 20 44 45 4c 45 54 | f4. .f6 - DELET| 00001b10 45 3a 20 70 72 6f 76 69 64 65 64 20 69 74 20 69 |E: provided it i| 00001b20 73 20 6e 6f 74 20 6c 6f 63 6b 65 64 2c 20 74 68 |s not locked, th| 00001b30 69 73 20 77 69 6c 6c 20 64 65 6c 65 74 65 20 74 |is will delete t| 00001b40 68 65 20 63 75 72 72 65 6e 74 20 66 69 6c 65 2c |he current file,| 00001b50 0d 62 65 66 6f 72 65 20 64 65 6c 65 74 69 6e 67 |.before deleting| 00001b60 20 45 63 68 6f 65 73 20 77 69 6c 6c 20 61 73 6b | Echoes will ask| 00001b70 20 22 41 72 65 20 59 6f 75 20 53 75 72 65 20 3f | "Are You Sure ?| 00001b80 20 28 59 2f 4e 29 22 2c 20 70 72 65 73 73 20 59 | (Y/N)", press Y| 00001b90 20 74 6f 0d 63 6f 6e 74 69 6e 75 65 20 61 6e 64 | to.continue and| 00001ba0 20 64 65 6c 65 74 65 20 74 68 65 20 66 69 6c 65 | delete the file| 00001bb0 2c 20 4e 20 69 66 20 79 6f 75 20 68 61 76 65 20 |, N if you have | 00001bc0 73 65 6c 65 63 74 65 64 20 74 68 65 20 77 72 6f |selected the wro| 00001bd0 6e 67 20 66 69 6c 65 20 6f 72 0d 68 61 76 65 20 |ng file or.have | 00001be0 63 68 61 6e 67 65 64 20 79 6f 75 72 20 6d 69 6e |changed your min| 00001bf0 64 2e 20 0d 66 37 20 2d 20 4c 6f 61 64 20 42 41 |d. .f7 - Load BA| 00001c00 53 49 43 3a 20 74 68 69 73 20 63 6f 6d 6d 61 6e |SIC: this comman| 00001c10 64 20 69 73 20 76 65 72 79 20 73 69 6d 69 6c 61 |d is very simila| 00001c20 72 20 74 6f 20 74 68 65 20 54 41 42 20 63 68 61 |r to the TAB cha| 00001c30 69 6e 20 61 63 74 69 6f 6e 2c 20 62 75 74 0d 74 |in action, but.t| 00001c40 68 69 73 20 77 69 6c 6c 20 6f 6e 6c 79 20 6c 6f |his will only lo| 00001c50 61 64 20 61 20 42 41 53 49 43 20 70 72 6f 67 72 |ad a BASIC progr| 00001c60 61 6d 2c 20 69 74 20 77 69 6c 6c 20 6e 6f 74 20 |am, it will not | 00001c70 72 75 6e 20 69 74 2e 0d 66 38 20 2d 20 45 58 45 |run it..f8 - EXE| 00001c80 43 3a 20 74 68 69 73 20 69 73 20 6c 69 6b 65 20 |C: this is like | 00001c90 74 68 65 20 4f 53 20 63 6f 6d 6d 61 6e 64 20 2a |the OS command *| 00001ca0 45 58 45 43 2e 20 49 66 20 61 20 6c 61 6e 67 75 |EXEC. If a langu| 00001cb0 61 67 65 20 68 61 73 20 6e 6f 74 20 62 65 65 6e |age has not been| 00001cc0 0d 61 6c 6c 6f 77 65 64 20 74 6f 20 69 6e 69 74 |.allowed to init| 00001cd0 69 61 6c 69 73 65 20 69 74 73 65 6c 66 20 28 69 |ialise itself (i| 00001ce0 2e 65 2e 20 45 63 68 6f 65 73 20 68 61 73 20 62 |.e. 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Usually | 000026b0 69 66 20 79 6f 75 20 65 78 61 6d 69 6e 65 20 74 |if you examine t| 000026c0 68 65 20 66 69 6c 65 20 79 6f 75 20 77 69 6c 6c |he file you will| 000026d0 20 66 69 6e 64 20 74 68 61 74 20 69 74 20 69 73 | find that it is| 000026e0 0d 6c 65 73 73 20 74 68 61 6e 20 31 20 73 65 63 |.less than 1 sec| 000026f0 74 6f 72 20 28 32 35 36 20 62 79 74 65 73 29 20 |tor (256 bytes) | 00002700 6c 6f 6e 67 2e 20 49 6e 20 74 68 69 73 20 63 61 |long. In this ca| 00002710 73 65 20 74 68 65 20 70 72 6f 62 6c 65 6d 20 69 |se the problem i| 00002720 73 20 77 69 74 68 20 74 68 65 0d 44 46 53 2e 20 |s with the.DFS. | 00002730 57 68 65 6e 20 73 61 76 69 6e 67 2c 20 74 68 65 |When saving, the| 00002740 20 44 46 53 20 62 75 66 66 65 72 73 20 65 76 65 | DFS buffers eve| 00002750 72 79 74 68 69 6e 67 20 61 6e 64 20 73 61 76 65 |rything and save| 00002760 73 20 69 6e 20 63 68 75 6e 6b 73 20 6f 66 20 32 |s in chunks of 2| 00002770 35 36 0d 62 79 74 65 73 20 2d 20 6f 6e 65 20 70 |56.bytes - one p| 00002780 61 67 65 20 74 6f 20 74 68 65 20 70 72 6f 63 65 |age to the proce| 00002790 73 73 6f 72 2c 20 6f 6e 65 20 73 65 63 74 6f 72 |ssor, one sector| 000027a0 20 6f 6e 20 74 68 65 20 64 69 73 63 20 2d 20 74 | on the disc - t| 000027b0 68 69 73 20 64 61 74 61 20 69 73 0d 75 73 75 61 |his data is.usua| 000027c0 6c 6c 79 20 62 75 66 66 65 72 65 64 20 69 6e 20 |lly buffered in | 000027d0 74 68 65 20 73 61 6d 65 20 70 6c 61 63 65 20 61 |the same place a| 000027e0 6c 6c 20 74 68 65 20 74 69 6d 65 20 62 75 74 20 |ll the time but | 000027f0 74 68 65 20 44 46 53 20 6e 65 76 65 72 20 63 6c |the DFS never cl| 00002800 65 61 6e 73 0d 74 68 69 73 20 73 70 61 63 65 2e |eans.this space.| 00002810 20 43 6f 6e 73 65 71 75 65 6e 74 6c 79 20 61 20 | Consequently a | 00002820 73 68 6f 72 74 20 66 69 6c 65 20 6d 61 79 20 62 |short file may b| 00002830 65 20 73 61 76 65 64 20 69 6e 20 74 68 65 20 64 |e saved in the d| 00002840 69 73 63 20 77 69 74 68 20 73 6f 6d 65 0d 64 61 |isc with some.da| 00002850 74 61 20 66 72 6f 6d 20 61 6e 6f 74 68 65 72 20 |ta from another | 00002860 66 69 6c 65 2e 20 4e 6f 72 6d 61 6c 6c 79 20 74 |file. Normally t| 00002870 68 65 20 44 46 53 20 6b 6e 6f 77 73 20 61 62 6f |he DFS knows abo| 00002880 75 74 20 74 68 69 73 20 61 6e 64 20 69 67 6e 6f |ut this and igno| 00002890 72 65 73 20 74 68 65 0d 65 78 74 72 61 20 64 61 |res the.extra da| 000028a0 74 61 20 62 75 74 20 45 63 68 6f 65 73 20 6c 6f |ta but Echoes lo| 000028b0 6f 6b 73 20 61 74 20 77 68 6f 6c 65 20 73 65 63 |oks at whole sec| 000028c0 74 6f 72 73 20 61 6e 64 20 69 67 6e 6f 72 65 73 |tors and ignores| 000028d0 20 74 68 65 20 6c 65 6e 67 74 68 20 6f 66 20 74 | the length of t| 000028e0 68 65 0d 66 69 6c 65 20 2d 20 66 6f 72 20 73 70 |he.file - for sp| 000028f0 65 65 64 20 2d 20 68 65 6e 63 65 20 64 61 74 61 |eed - hence data| 00002900 20 66 72 6f 6d 20 61 6e 20 6f 6c 64 20 66 69 6c | from an old fil| 00002910 65 20 6d 61 79 20 62 65 20 64 69 73 70 6c 61 79 |e may be display| 00002920 65 64 2e 0d 0d 41 6e 6f 74 68 65 72 20 72 65 61 |ed...Another rea| 00002930 73 6f 6e 20 77 68 79 20 64 61 74 61 20 6d 65 73 |son why data mes| 00002940 73 61 67 65 73 20 6d 61 79 20 61 70 70 65 61 72 |sages may appear| 00002950 20 75 6e 65 78 70 65 63 74 65 64 6c 79 20 69 73 | unexpectedly is| 00002960 20 69 66 20 64 61 74 61 20 66 69 6c 65 2c 0d 6d | if data file,.m| 00002970 61 63 68 69 6e 65 20 63 6f 64 65 20 70 72 6f 67 |achine code prog| 00002980 72 61 6d 73 2c 20 6f 72 20 6f 74 68 65 72 20 6c |rams, or other l| 00002990 61 6e 67 75 61 67 65 73 20 68 61 76 65 20 74 68 |anguages have th| 000029a0 65 20 73 74 61 72 74 20 61 6e 64 20 65 6e 64 20 |e start and end | 000029b0 74 6f 6b 65 6e 20 0d 63 6f 6e 74 61 69 6e 65 64 |token .contained| 000029c0 20 77 69 74 68 69 6e 20 74 68 65 6d 20 62 79 20 | within them by | 000029d0 63 6f 69 6e 63 69 64 65 6e 63 65 2e 20 54 6f 20 |coincidence. To | 000029e0 63 75 74 20 64 6f 77 6e 20 74 68 65 20 63 68 61 |cut down the cha| 000029f0 6e 63 65 73 20 6f 66 20 73 75 63 68 20 61 0d 63 |nces of such a.c| 00002a00 6f 69 6e 63 69 64 65 6e 63 65 2c 20 69 66 20 45 |oincidence, if E| 00002a10 63 68 6f 65 73 20 6f 6e 6c 79 20 66 69 6e 64 73 |choes only finds| 00002a20 20 61 20 73 74 61 72 74 69 6e 67 20 74 6f 6b 65 | a starting toke| 00002a30 6e 20 77 69 74 68 6f 75 74 20 61 20 6d 61 74 63 |n without a matc| 00002a40 68 69 6e 67 20 65 6e 64 0d 74 6f 6b 65 6e 20 69 |hing end.token i| 00002a50 74 20 61 73 73 75 6d 65 73 20 74 68 61 74 20 74 |t assumes that t| 00002a60 68 69 73 20 69 73 20 6e 6f 74 20 61 20 67 65 6e |his is not a gen| 00002a70 75 69 6e 65 20 72 65 6d 61 72 6b 20 61 6e 64 20 |uine remark and | 00002a80 69 67 6e 6f 72 65 73 20 74 68 65 0d 73 74 61 74 |ignores the.stat| 00002a90 65 6d 65 6e 74 2e 20 46 69 6e 61 6c 6c 79 2c 20 |ement. Finally, | 00002aa0 69 66 20 45 63 68 6f 65 73 20 69 73 20 75 73 65 |if Echoes is use| 00002ab0 64 20 6f 6e 20 61 20 64 6f 75 62 6c 65 20 63 61 |d on a double ca| 00002ac0 74 61 6c 6f 67 75 65 20 64 69 73 63 2c 20 6f 6e |talogue disc, on| 00002ad0 6c 79 20 74 68 65 0d 66 69 72 73 74 20 63 61 74 |ly the.first cat| 00002ae0 61 6c 6f 67 75 65 20 28 69 2e 65 2e 20 74 68 65 |alogue (i.e. the| 00002af0 20 66 69 72 73 74 20 33 31 20 66 69 6c 65 73 29 | first 31 files)| 00002b00 20 77 69 6c 6c 20 62 65 20 72 65 63 6f 67 6e 69 | will be recogni| 00002b10 7a 65 64 2e 0d |zed..| 00002b15