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Lett1
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 » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_21.ADF |
| Filename: | Lett1 |
| Read OK: | ✔ |
| File size: | 116E bytes |
| Load address: | 4C204556 |
| Exec address: | 31747465 |
File contents
APOLOGIES
~~~~~~~~~
I must first apologise for my mistakes in the menus of Issue 20. I had
written CODE4 for a suggested single menu for the discs but Gus asked me
if I could adapt it for the present menu system as these are now well
established. In doing this, I regret that I omitted the VDU2 command to
start the printer. I also made a programing error in ending the printer
procedure with a GOTO. To correct the menus, enter these two lines to the
screen -
250IF a%=1 PROCprinter:GOTO130
400VDU15,2:ENDPROC
The menus should then be LOADed in turn and these lines copied in and the
menus re-SAVEd. This can be done from the root directory by LOADing and
SAVEing the menus with 'L.LMenu' etc.
Gus mentioned that his printer is not set for auto linefeed and this
resulted in all printing being on one line. This can be remedied by
adding - 395*FX6,0 but this is not normally needed.
Apart from the errors and omissions, I am sorry that I sent the wrong file
for the notes on John's RUBIK program. The completed file had been
misfiled and I had sent the unfinished file by mistake!!
INVISIBLE BOOT
~~~~~~~~~~~~~~
I was interested in Ross Little's idea for an invisible BOOT file as I had
found another method of doing this.
One disadvantage of Ross's idea is that since the window is reduced to a
single space all commands are printed at the same point on the screen and
so the longer the file the more visible this becomes - I have a BOOT file
which sets up several function keys plus other commands and this is quite
noticable.
The alterative method uses VDU21 and VDU6. The file should be set in the
form -
0C 15 0D
Command (without CR character)
0C 06 0D
This method does produce a truly invisible file but, after trying this
out, I found that it will only work for a BOOT file of one command only.
After experimenting with these, I thought of the idea of using VDU17,0 to
print in the background colour and VDU17,1 at the end. This seemed to
work but the cursor caused problems until I turned it off. Set up the
BOOT file in this form -
11 00 17 01 00 00 00 00 00 00 00 00
Commmads as normal but without final CR
11 01 0D
While the first and last byte values can be entered easiest with a sector
editor as he suggests. If you have not got an editor, you can do this in
this way. Set up your file as normal without additions. Save this file
and then *LOAD the file to &300C. This allows space for the 12 bytes from
&3000. Enter these in this way -
?&3000=17 <RETURN>
?&3001=0 <RETURN>
?&3002=23
?&3003=1
?&3004=0
..
..
?&300b=0 ..
Find the final CR character and replce this and the next two bytes in the
same way with -
?<addr) =17
?<addr+1>=1
?<addr+2>=13
This is easier if you have a dissassembler, eg TRACKER (EU Aug 1988), so
that you can check the addresses and the final file before saving it.
The file should then be SAVEd by -
*SAVE !BOOT 3000 +<length of file> 00000000 FFFFFFFF
When you have set up one file in this way, it is easy to make further
files. *LOAD the made up file to &3000 and then *LOAD the new file to
&300C. It is then only necessary to enter the final 3 bytes and save the
file as above.
SOME FURTHER COMMENTS
~~~~~~~~~~~~~~~~~~~~~
While writing, I would like to suggest that letters for publication
should, preferably, be writtenwith your address printed in a single
line at the end of the of the letter. I know that some of have done this
and I do not want to sound finicky but I have felt that when printed out,
the letters pages have seemed rather untidy and that the appearance of the
mag would be improved if this was done. Also a neat line of *s or ~s at
the end to separate it from the following might be good idea too.
Regarding comments on editing out such things as 'I enclose cheque
for...', I would suggest that only things which are for all to read should
be put on the disc and these things should be written as a short cover
note to be enclosed with the disc.
Richard Dimond, 5 Briary Court, SIDCUP, Kent, DA14 6HZ. Tel.0181 302 2395
**************************************************************************
00000000 0d 41 50 4f 4c 4f 47 49 45 53 0d 7e 7e 7e 7e 7e |.APOLOGIES.~~~~~| 00000010 7e 7e 7e 7e 0d 49 20 6d 75 73 74 20 66 69 72 73 |~~~~.I must firs| 00000020 74 20 61 70 6f 6c 6f 67 69 73 65 20 66 6f 72 1a |t apologise for.| 00000030 20 6d 79 1a 20 6d 69 73 74 61 6b 65 73 1a 20 69 | my. mistakes. i| 00000040 6e 20 74 68 65 20 6d 65 6e 75 73 20 6f 66 20 49 |n the menus of I| 00000050 73 73 75 65 20 32 30 2e 20 20 49 20 68 61 64 0d |ssue 20. I had.| 00000060 77 72 69 74 74 65 6e 20 43 4f 44 45 34 20 66 6f |written CODE4 fo| 00000070 72 20 61 20 73 75 67 67 65 73 74 65 64 20 73 69 |r a suggested si| 00000080 6e 67 6c 65 20 6d 65 6e 75 20 66 6f 72 1a 20 74 |ngle menu for. t| 00000090 68 65 1a 20 64 69 73 63 73 20 62 75 74 20 47 75 |he. discs but Gu| 000000a0 73 20 61 73 6b 65 64 20 6d 65 0d 69 66 20 49 20 |s asked me.if I | 000000b0 63 6f 75 6c 64 20 61 64 61 70 74 20 69 74 20 66 |could adapt it f| 000000c0 6f 72 20 74 68 65 20 70 72 65 73 65 6e 74 20 6d |or the present m| 000000d0 65 6e 75 20 73 79 73 74 65 6d 1a 20 61 73 1a 20 |enu system. as. | 000000e0 74 68 65 73 65 1a 20 61 72 65 1a 20 6e 6f 77 1a |these. are. now.| 000000f0 20 77 65 6c 6c 0d 65 73 74 61 62 6c 69 73 68 65 | well.establishe| 00000100 64 2e 1a 20 20 49 6e 1a 20 64 6f 69 6e 67 20 74 |d.. In. doing t| 00000110 68 69 73 2c 20 49 20 72 65 67 72 65 74 20 74 68 |his, I regret th| 00000120 61 74 20 49 20 6f 6d 69 74 74 65 64 20 74 68 65 |at I omitted the| 00000130 20 56 44 55 32 20 63 6f 6d 6d 61 6e 64 20 74 6f | VDU2 command to| 00000140 0d 73 74 61 72 74 20 74 68 65 20 70 72 69 6e 74 |.start the print| 00000150 65 72 2e 1a 20 20 49 1a 20 61 6c 73 6f 20 6d 61 |er.. I. also ma| 00000160 64 65 20 61 20 70 72 6f 67 72 61 6d 69 6e 67 20 |de a programing | 00000170 65 72 72 6f 72 20 69 6e 20 65 6e 64 69 6e 67 20 |error in ending | 00000180 74 68 65 20 70 72 69 6e 74 65 72 0d 70 72 6f 63 |the printer.proc| 00000190 65 64 75 72 65 20 77 69 74 68 20 61 20 47 4f 54 |edure with a GOT| 000001a0 4f 2e 20 20 54 6f 20 63 6f 72 72 65 63 74 20 74 |O. To correct t| 000001b0 68 65 20 6d 65 6e 75 73 2c 20 65 6e 74 65 72 20 |he menus, enter | 000001c0 74 68 65 73 65 20 74 77 6f 20 6c 69 6e 65 73 20 |these two lines | 000001d0 74 6f 20 74 68 65 0d 73 63 72 65 65 6e 20 2d 0d |to the.screen -.| 000001e0 0d 20 20 20 20 20 20 32 35 30 49 46 20 61 25 3d |. 250IF a%=| 000001f0 31 20 50 52 4f 43 70 72 69 6e 74 65 72 3a 47 4f |1 PROCprinter:GO| 00000200 54 4f 31 33 30 0d 20 20 20 20 20 20 34 30 30 56 |TO130. 400V| 00000210 44 55 31 35 2c 32 3a 45 4e 44 50 52 4f 43 0d 0d |DU15,2:ENDPROC..| 00000220 54 68 65 20 6d 65 6e 75 73 20 73 68 6f 75 6c 64 |The menus should| 00000230 20 74 68 65 6e 20 62 65 1a 20 4c 4f 41 44 65 64 | then be. LOADed| 00000240 20 69 6e 20 74 75 72 6e 20 61 6e 64 20 74 68 65 | in turn and the| 00000250 73 65 20 6c 69 6e 65 73 20 63 6f 70 69 65 64 20 |se lines copied | 00000260 69 6e 20 61 6e 64 20 74 68 65 0d 6d 65 6e 75 73 |in and the.menus| 00000270 20 72 65 2d 53 41 56 45 64 2e 20 20 54 68 69 73 | re-SAVEd. This| 00000280 20 63 61 6e 20 62 65 20 64 6f 6e 65 1a 20 66 72 | can be done. fr| 00000290 6f 6d 1a 20 74 68 65 20 72 6f 6f 74 20 64 69 72 |om. the root dir| 000002a0 65 63 74 6f 72 79 20 62 79 20 4c 4f 41 44 69 6e |ectory by LOADin| 000002b0 67 20 61 6e 64 0d 53 41 56 45 69 6e 67 20 74 68 |g and.SAVEing th| 000002c0 65 20 6d 65 6e 75 73 20 77 69 74 68 20 27 4c 2e |e menus with 'L.| 000002d0 4c 4d 65 6e 75 27 20 65 74 63 2e 0d 0d 47 75 73 |LMenu' etc...Gus| 000002e0 1a 20 6d 65 6e 74 69 6f 6e 65 64 20 74 68 61 74 |. mentioned that| 000002f0 20 68 69 73 20 70 72 69 6e 74 65 72 20 69 73 20 | his printer is | 00000300 6e 6f 74 20 73 65 74 1a 20 66 6f 72 1a 20 61 75 |not set. for. au| 00000310 74 6f 1a 20 6c 69 6e 65 66 65 65 64 1a 20 61 6e |to. linefeed. an| 00000320 64 1a 20 74 68 69 73 0d 72 65 73 75 6c 74 65 64 |d. this.resulted| 00000330 20 69 6e 1a 20 61 6c 6c 1a 20 70 72 69 6e 74 69 | in. all. printi| 00000340 6e 67 1a 20 62 65 69 6e 67 1a 20 6f 6e 1a 20 6f |ng. being. on. o| 00000350 6e 65 1a 20 6c 69 6e 65 2e 20 20 54 68 69 73 20 |ne. line. This | 00000360 63 61 6e 20 62 65 20 72 65 6d 65 64 69 65 64 20 |can be remedied | 00000370 62 79 0d 61 64 64 69 6e 67 20 2d 20 20 20 33 39 |by.adding - 39| 00000380 35 2a 46 58 36 2c 30 20 20 62 75 74 20 74 68 69 |5*FX6,0 but thi| 00000390 73 20 69 73 20 6e 6f 74 20 6e 6f 72 6d 61 6c 6c |s is not normall| 000003a0 79 20 6e 65 65 64 65 64 2e 0d 0d 41 70 61 72 74 |y needed...Apart| 000003b0 20 66 72 6f 6d 20 74 68 65 20 65 72 72 6f 72 73 | from the errors| 000003c0 20 61 6e 64 20 6f 6d 69 73 73 69 6f 6e 73 2c 20 | and omissions, | 000003d0 49 20 61 6d 20 73 6f 72 72 79 20 74 68 61 74 20 |I am sorry that | 000003e0 49 20 73 65 6e 74 20 74 68 65 20 77 72 6f 6e 67 |I sent the wrong| 000003f0 20 66 69 6c 65 0d 66 6f 72 20 74 68 65 20 6e 6f | file.for the no| 00000400 74 65 73 20 6f 6e 20 4a 6f 68 6e 27 73 1a 20 52 |tes on John's. R| 00000410 55 42 49 4b 1a 20 70 72 6f 67 72 61 6d 2e 1a 20 |UBIK. program.. | 00000420 20 54 68 65 1a 20 63 6f 6d 70 6c 65 74 65 64 1a | The. completed.| 00000430 20 66 69 6c 65 1a 20 68 61 64 1a 20 62 65 65 6e | file. had. been| 00000440 0d 6d 69 73 66 69 6c 65 64 20 61 6e 64 20 49 20 |.misfiled and I | 00000450 68 61 64 20 73 65 6e 74 20 74 68 65 20 75 6e 66 |had sent the unf| 00000460 69 6e 69 73 68 65 64 20 66 69 6c 65 20 62 79 20 |inished file by | 00000470 6d 69 73 74 61 6b 65 21 21 0d 0d 49 4e 56 49 53 |mistake!!..INVIS| 00000480 49 42 4c 45 20 42 4f 4f 54 0d 7e 7e 7e 7e 7e 7e |IBLE BOOT.~~~~~~| 00000490 7e 7e 7e 7e 7e 7e 7e 7e 0d 49 20 77 61 73 20 69 |~~~~~~~~.I was i| 000004a0 6e 74 65 72 65 73 74 65 64 20 69 6e 20 52 6f 73 |nterested in Ros| 000004b0 73 20 4c 69 74 74 6c 65 27 73 20 69 64 65 61 20 |s Little's idea | 000004c0 66 6f 72 20 61 6e 20 69 6e 76 69 73 69 62 6c 65 |for an invisible| 000004d0 20 42 4f 4f 54 20 66 69 6c 65 20 61 73 20 49 20 | BOOT file as I | 000004e0 68 61 64 0d 66 6f 75 6e 64 20 61 6e 6f 74 68 65 |had.found anothe| 000004f0 72 20 6d 65 74 68 6f 64 20 6f 66 20 64 6f 69 6e |r method of doin| 00000500 67 20 74 68 69 73 2e 20 0d 0d 4f 6e 65 20 64 69 |g this. ..One di| 00000510 73 61 64 76 61 6e 74 61 67 65 20 6f 66 20 52 6f |sadvantage of Ro| 00000520 73 73 27 73 20 69 64 65 61 1a 20 69 73 1a 20 74 |ss's idea. is. t| 00000530 68 61 74 20 73 69 6e 63 65 20 74 68 65 20 77 69 |hat since the wi| 00000540 6e 64 6f 77 20 69 73 20 72 65 64 75 63 65 64 20 |ndow is reduced | 00000550 74 6f 20 61 0d 73 69 6e 67 6c 65 20 73 70 61 63 |to a.single spac| 00000560 65 20 61 6c 6c 20 63 6f 6d 6d 61 6e 64 73 20 61 |e all commands a| 00000570 72 65 20 70 72 69 6e 74 65 64 20 61 74 1a 20 74 |re printed at. t| 00000580 68 65 20 73 61 6d 65 20 70 6f 69 6e 74 20 6f 6e |he same point on| 00000590 20 74 68 65 20 73 63 72 65 65 6e 20 61 6e 64 0d | the screen and.| 000005a0 73 6f 20 74 68 65 20 6c 6f 6e 67 65 72 20 74 68 |so the longer th| 000005b0 65 20 66 69 6c 65 20 74 68 65 20 6d 6f 72 65 20 |e file the more | 000005c0 76 69 73 69 62 6c 65 1a 20 74 68 69 73 20 62 65 |visible. this be| 000005d0 63 6f 6d 65 73 20 2d 20 49 20 68 61 76 65 20 61 |comes - I have a| 000005e0 20 42 4f 4f 54 20 66 69 6c 65 0d 77 68 69 63 68 | BOOT file.which| 000005f0 20 73 65 74 73 20 75 70 20 73 65 76 65 72 61 6c | sets up several| 00000600 20 66 75 6e 63 74 69 6f 6e 1a 20 6b 65 79 73 20 | function. keys | 00000610 70 6c 75 73 20 6f 74 68 65 72 20 63 6f 6d 6d 61 |plus other comma| 00000620 6e 64 73 20 61 6e 64 20 74 68 69 73 20 69 73 20 |nds and this is | 00000630 71 75 69 74 65 0d 6e 6f 74 69 63 61 62 6c 65 2e |quite.noticable.| 00000640 0d 0d 54 68 65 20 61 6c 74 65 72 61 74 69 76 65 |..The alterative| 00000650 20 6d 65 74 68 6f 64 20 75 73 65 73 20 56 44 55 | method uses VDU| 00000660 32 31 1a 20 61 6e 64 20 56 44 55 36 2e 20 20 54 |21. and VDU6. T| 00000670 68 65 20 66 69 6c 65 20 73 68 6f 75 6c 64 20 62 |he file should b| 00000680 65 20 73 65 74 20 69 6e 20 74 68 65 0d 66 6f 72 |e set in the.for| 00000690 6d 20 2d 0d 20 20 20 20 20 20 20 20 20 20 20 30 |m -. 0| 000006a0 43 20 31 35 20 30 44 0d 20 20 20 20 20 20 20 20 |C 15 0D. | 000006b0 20 20 20 43 6f 6d 6d 61 6e 64 20 20 28 77 69 74 | Command (wit| 000006c0 68 6f 75 74 20 43 52 20 63 68 61 72 61 63 74 65 |hout CR characte| 000006d0 72 29 0d 20 20 20 20 20 20 20 20 20 20 20 30 43 |r). 0C| 000006e0 20 30 36 20 30 44 0d 0d 54 68 69 73 20 6d 65 74 | 06 0D..This met| 000006f0 68 6f 64 20 64 6f 65 73 20 70 72 6f 64 75 63 65 |hod does produce| 00000700 1a 20 61 1a 20 74 72 75 6c 79 1a 20 69 6e 76 69 |. a. truly. invi| 00000710 73 69 62 6c 65 1a 20 66 69 6c 65 20 62 75 74 2c |sible. file but,| 00000720 20 61 66 74 65 72 20 74 72 79 69 6e 67 20 74 68 | after trying th| 00000730 69 73 0d 6f 75 74 2c 20 49 20 66 6f 75 6e 64 20 |is.out, I found | 00000740 74 68 61 74 20 69 74 20 77 69 6c 6c 20 6f 6e 6c |that it will onl| 00000750 79 20 77 6f 72 6b 20 66 6f 72 20 61 20 42 4f 4f |y work for a BOO| 00000760 54 20 66 69 6c 65 20 6f 66 20 6f 6e 65 20 63 6f |T file of one co| 00000770 6d 6d 61 6e 64 20 6f 6e 6c 79 2e 0d 0d 41 66 74 |mmand only...Aft| 00000780 65 72 20 65 78 70 65 72 69 6d 65 6e 74 69 6e 67 |er experimenting| 00000790 20 77 69 74 68 20 74 68 65 73 65 2c 20 49 20 74 | with these, I t| 000007a0 68 6f 75 67 68 74 20 6f 66 1a 20 74 68 65 20 69 |hought of. the i| 000007b0 64 65 61 20 6f 66 20 75 73 69 6e 67 20 56 44 55 |dea of using VDU| 000007c0 31 37 2c 30 20 74 6f 0d 70 72 69 6e 74 20 69 6e |17,0 to.print in| 000007d0 20 74 68 65 20 62 61 63 6b 67 72 6f 75 6e 64 20 | the background | 000007e0 63 6f 6c 6f 75 72 20 61 6e 64 20 56 44 55 31 37 |colour and VDU17| 000007f0 2c 31 20 61 74 20 74 68 65 1a 20 65 6e 64 2e 1a |,1 at the. end..| 00000800 20 20 54 68 69 73 1a 20 73 65 65 6d 65 64 1a 20 | This. seemed. | 00000810 74 6f 0d 77 6f 72 6b 1a 20 62 75 74 1a 20 74 68 |to.work. but. th| 00000820 65 20 63 75 72 73 6f 72 20 63 61 75 73 65 64 20 |e cursor caused | 00000830 70 72 6f 62 6c 65 6d 73 20 75 6e 74 69 6c 20 49 |problems until I| 00000840 20 74 75 72 6e 65 64 20 69 74 20 6f 66 66 2e 20 | turned it off. | 00000850 20 53 65 74 1a 20 75 70 1a 20 74 68 65 0d 42 4f | Set. up. the.BO| 00000860 4f 54 20 66 69 6c 65 20 69 6e 20 74 68 69 73 20 |OT file in this | 00000870 66 6f 72 6d 20 2d 0d 0d 20 20 20 20 20 20 20 20 |form -.. | 00000880 20 20 20 31 31 20 30 30 20 31 37 20 30 31 20 30 | 11 00 17 01 0| 00000890 30 20 30 30 20 30 30 20 30 30 20 30 30 20 30 30 |0 00 00 00 00 00| 000008a0 20 30 30 20 30 30 0d 20 20 20 20 20 20 20 20 20 | 00 00. | 000008b0 20 20 43 6f 6d 6d 6d 61 64 73 20 61 73 20 6e 6f | Commmads as no| 000008c0 72 6d 61 6c 20 62 75 74 20 77 69 74 68 6f 75 74 |rmal but without| 000008d0 20 66 69 6e 61 6c 20 43 52 0d 20 20 20 20 20 20 | final CR. | 000008e0 20 20 20 20 20 31 31 20 30 31 20 30 44 0d 0d 57 | 11 01 0D..W| 000008f0 68 69 6c 65 20 74 68 65 20 66 69 72 73 74 20 61 |hile the first a| 00000900 6e 64 20 6c 61 73 74 1a 20 62 79 74 65 20 76 61 |nd last. byte va| 00000910 6c 75 65 73 20 63 61 6e 20 62 65 20 65 6e 74 65 |lues can be ente| 00000920 72 65 64 20 65 61 73 69 65 73 74 20 77 69 74 68 |red easiest with| 00000930 20 61 20 73 65 63 74 6f 72 0d 65 64 69 74 6f 72 | a sector.editor| 00000940 20 61 73 20 68 65 20 73 75 67 67 65 73 74 73 2e | as he suggests.| 00000950 20 20 20 49 66 20 79 6f 75 20 68 61 76 65 20 6e | If you have n| 00000960 6f 74 20 67 6f 74 20 61 6e 20 65 64 69 74 6f 72 |ot got an editor| 00000970 2c 20 79 6f 75 20 63 61 6e 20 64 6f 20 74 68 69 |, you can do thi| 00000980 73 20 69 6e 0d 74 68 69 73 20 77 61 79 2e 20 20 |s in.this way. | 00000990 53 65 74 20 75 70 20 79 6f 75 72 1a 20 66 69 6c |Set up your. fil| 000009a0 65 1a 20 61 73 20 6e 6f 72 6d 61 6c 20 77 69 74 |e. as normal wit| 000009b0 68 6f 75 74 20 61 64 64 69 74 69 6f 6e 73 2e 20 |hout additions. | 000009c0 20 53 61 76 65 20 74 68 69 73 20 66 69 6c 65 0d | Save this file.| 000009d0 61 6e 64 20 74 68 65 6e 20 2a 4c 4f 41 44 20 74 |and then *LOAD t| 000009e0 68 65 20 66 69 6c 65 20 74 6f 20 26 33 30 30 43 |he file to &300C| 000009f0 2e 1a 20 54 68 69 73 20 61 6c 6c 6f 77 73 20 73 |.. This allows s| 00000a00 70 61 63 65 20 66 6f 72 20 74 68 65 20 31 32 20 |pace for the 12 | 00000a10 62 79 74 65 73 20 66 72 6f 6d 0d 26 33 30 30 30 |bytes from.&3000| 00000a20 2e 20 20 45 6e 74 65 72 20 74 68 65 73 65 20 69 |. Enter these i| 00000a30 6e 20 74 68 69 73 20 77 61 79 20 2d 0d 0d 20 20 |n this way -.. | 00000a40 20 20 20 20 20 20 20 20 20 20 20 3f 26 33 30 30 | ?&300| 00000a50 30 3d 31 37 20 20 20 20 20 3c 52 45 54 55 52 4e |0=17 <RETURN| 00000a60 3e 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 3f |>. ?| 00000a70 26 33 30 30 31 3d 30 20 20 20 20 20 20 3c 52 45 |&3001=0 <RE| 00000a80 54 55 52 4e 3e 0d 20 20 20 20 20 20 20 20 20 20 |TURN>. | 00000a90 20 20 20 3f 26 33 30 30 32 3d 32 33 0d 20 20 20 | ?&3002=23. | 00000aa0 20 20 20 20 20 20 20 20 20 20 3f 26 33 30 30 33 | ?&3003| 00000ab0 3d 31 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 |=1. | 00000ac0 3f 26 33 30 30 34 3d 30 0d 20 20 20 20 20 20 20 |?&3004=0. | 00000ad0 20 20 20 20 20 20 20 20 20 2e 2e 0d 20 20 20 20 | ... | 00000ae0 20 20 20 20 20 20 20 20 20 20 20 20 2e 2e 0d 20 | ... | 00000af0 20 20 20 20 20 20 20 20 20 20 20 20 3f 26 33 30 | ?&30| 00000b00 30 62 3d 30 20 20 20 20 20 20 20 20 20 20 2e 2e |0b=0 ..| 00000b10 0d 0d 46 69 6e 64 20 74 68 65 20 66 69 6e 61 6c |..Find the final| 00000b20 20 43 52 20 63 68 61 72 61 63 74 65 72 20 61 6e | CR character an| 00000b30 64 20 72 65 70 6c 63 65 20 74 68 69 73 20 61 6e |d replce this an| 00000b40 64 20 74 68 65 20 6e 65 78 74 20 74 77 6f 20 62 |d the next two b| 00000b50 79 74 65 73 1a 20 69 6e 20 74 68 65 0d 73 61 6d |ytes. in the.sam| 00000b60 65 20 77 61 79 20 77 69 74 68 20 2d 0d 20 0d 20 |e way with -. . | 00000b70 20 20 20 20 20 20 20 20 20 20 20 20 20 3f 3c 61 | ?<a| 00000b80 64 64 72 29 20 20 3d 31 37 0d 20 20 20 20 20 20 |ddr) =17. | 00000b90 20 20 20 20 20 20 20 20 3f 3c 61 64 64 72 2b 31 | ?<addr+1| 00000ba0 3e 3d 31 0d 20 20 20 20 20 20 20 20 20 20 20 20 |>=1. | 00000bb0 20 20 3f 3c 61 64 64 72 2b 32 3e 3d 31 33 0d 0d | ?<addr+2>=13..| 00000bc0 54 68 69 73 20 69 73 20 65 61 73 69 65 72 20 69 |This is easier i| 00000bd0 66 20 79 6f 75 20 68 61 76 65 20 61 20 64 69 73 |f you have a dis| 00000be0 73 61 73 73 65 6d 62 6c 65 72 2c 1a 20 65 67 1a |sassembler,. eg.| 00000bf0 20 54 52 41 43 4b 45 52 20 28 45 55 20 41 75 67 | TRACKER (EU Aug| 00000c00 20 31 39 38 38 29 2c 20 73 6f 0d 74 68 61 74 20 | 1988), so.that | 00000c10 79 6f 75 20 63 61 6e 20 63 68 65 63 6b 20 74 68 |you can check th| 00000c20 65 20 61 64 64 72 65 73 73 65 73 20 61 6e 64 20 |e addresses and | 00000c30 74 68 65 20 66 69 6e 61 6c 20 66 69 6c 65 20 62 |the final file b| 00000c40 65 66 6f 72 65 20 73 61 76 69 6e 67 20 69 74 2e |efore saving it.| 00000c50 0d 0d 54 68 65 20 66 69 6c 65 20 73 68 6f 75 6c |..The file shoul| 00000c60 64 20 74 68 65 6e 20 62 65 20 53 41 56 45 64 20 |d then be SAVEd | 00000c70 62 79 20 2d 0d 0d 20 20 20 20 20 2a 53 41 56 45 |by -.. *SAVE| 00000c80 20 21 42 4f 4f 54 20 33 30 30 30 20 2b 3c 6c 65 | !BOOT 3000 +<le| 00000c90 6e 67 74 68 20 6f 66 20 66 69 6c 65 3e 20 30 30 |ngth of file> 00| 00000ca0 30 30 30 30 30 30 20 46 46 46 46 46 46 46 46 0d |000000 FFFFFFFF.| 00000cb0 0d 57 68 65 6e 20 79 6f 75 20 68 61 76 65 20 73 |.When you have s| 00000cc0 65 74 20 75 70 1a 20 6f 6e 65 1a 20 66 69 6c 65 |et up. one. file| 00000cd0 1a 20 69 6e 1a 20 74 68 69 73 1a 20 77 61 79 2c |. in. this. way,| 00000ce0 20 69 74 20 69 73 20 65 61 73 79 20 74 6f 20 6d | it is easy to m| 00000cf0 61 6b 65 20 66 75 72 74 68 65 72 0d 66 69 6c 65 |ake further.file| 00000d00 73 2e 20 20 2a 4c 4f 41 44 20 74 68 65 20 6d 61 |s. *LOAD the ma| 00000d10 64 65 20 75 70 20 66 69 6c 65 20 74 6f 20 26 33 |de up file to &3| 00000d20 30 30 30 20 61 6e 64 20 74 68 65 6e 1a 20 2a 4c |000 and then. *L| 00000d30 4f 41 44 1a 20 74 68 65 1a 20 6e 65 77 1a 20 66 |OAD. the. new. f| 00000d40 69 6c 65 20 74 6f 0d 26 33 30 30 43 2e 20 20 49 |ile to.&300C. I| 00000d50 74 20 69 73 20 74 68 65 6e 20 6f 6e 6c 79 1a 20 |t is then only. | 00000d60 6e 65 63 65 73 73 61 72 79 20 74 6f 20 65 6e 74 |necessary to ent| 00000d70 65 72 20 74 68 65 20 66 69 6e 61 6c 20 33 20 62 |er the final 3 b| 00000d80 79 74 65 73 20 61 6e 64 20 73 61 76 65 20 74 68 |ytes and save th| 00000d90 65 0d 66 69 6c 65 20 61 73 20 61 62 6f 76 65 2e |e.file as above.| 00000da0 0d 0d 53 4f 4d 45 20 46 55 52 54 48 45 52 20 43 |..SOME FURTHER C| 00000db0 4f 4d 4d 45 4e 54 53 0d 7e 7e 7e 7e 7e 7e 7e 7e |OMMENTS.~~~~~~~~| 00000dc0 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e 7e 0d 57 68 |~~~~~~~~~~~~~.Wh| 00000dd0 69 6c 65 1a 20 77 72 69 74 69 6e 67 2c 20 49 20 |ile. writing, I | 00000de0 77 6f 75 6c 64 20 6c 69 6b 65 1a 20 74 6f 1a 20 |would like. to. | 00000df0 73 75 67 67 65 73 74 1a 20 74 68 61 74 1a 20 6c |suggest. that. l| 00000e00 65 74 74 65 72 73 1a 20 66 6f 72 1a 20 70 75 62 |etters. for. pub| 00000e10 6c 69 63 61 74 69 6f 6e 0d 73 68 6f 75 6c 64 2c |lication.should,| 00000e20 1a 20 70 72 65 66 65 72 61 62 6c 79 2c 1a 1a 20 |. preferably,.. | 00000e30 62 65 1a 20 77 72 69 74 74 65 6e 1a 77 69 74 68 |be. written.with| 00000e40 20 79 6f 75 72 20 61 64 64 72 65 73 73 20 70 72 | your address pr| 00000e50 69 6e 74 65 64 20 69 6e 20 61 1a 20 73 69 6e 67 |inted in a. sing| 00000e60 6c 65 0d 6c 69 6e 65 20 61 74 20 74 68 65 20 65 |le.line at the e| 00000e70 6e 64 20 6f 66 1a 20 74 68 65 20 6f 66 20 74 68 |nd of. the of th| 00000e80 65 20 6c 65 74 74 65 72 2e 20 20 49 20 6b 6e 6f |e letter. 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T| 00001110 65 6c 2e 30 31 38 31 20 33 30 32 20 32 33 39 35 |el.0181 302 2395| 00001120 0d 0d 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a |..**************| 00001130 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a |****************| * 00001160 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 0d 0d |************..| 0000116e
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