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P/+eugex1

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_40.ADF
Filename: P/+eugex1
Read OK:
File size: 19D7 bytes
Load address: 2B0D6576
Exec address: 65677565
Duplicates

There is 1 duplicate copy of this file in the archive:

File contents
HOW EUG DISCS RUN
~~~~~~~~~~~~~~~~~                                                          
by Richard Dimond

Having read Robert Sprowson's notes on word wrapping and having re-written
the assembler for the new coding - now CODE8, I thought that I would
explain how the new menu and coding run the discs.

CODE 8
~~~~~~
I have added some REM lines to the assembler listing and hope these will
help you to understand the coding.  All line numbers refer to the
assembler listng.

There are two calls made to the coding from the menu 'clear' and 'print'. 
These are at &900 and &903 but jump to the start of the routines.

clear (line 300)
~~~~~~~~~~~~~~~~
This routine clears the memory from HIMEM to &4000 - start of a MODE 3
screen.  It first loads the address of HIMEM (at &06,&07) into &70,&71 and
the loop stores a zero into each byte of memory.  This is necessary as the
coding checks for zero at the end of the file.

print (line 410)
~~~~~~~~~~~~~~~~
The flags for printing bold and italic characters are first set to zero.

Then osbyte with A=&87 (*FX135) is used to check the MODE number (line
430) and the modeflag set for the MODE selected.

Line 470 checks if the printer is set and sets style for use in the
sub-routines 'bd' or 'it' if this is set.

Line 530 jumps to the 40 column routine at line 690 if the modeflag is set
to &FF.

If the skip flag is set to &FF, line 630 will print the linefeeds to skip
the perforations when using the printer.

When either highlight is set lines 640/650 set the corresponding flag for
the font change and reset it next time to return to normal print.  The
routine 'bd' or  'it' is called while one of these flags is set.

The line 680 ends the 'prt' routine with a JMP in 80 column printing mode
and an RTS for 40 column - this was necessary to correct the trouble with
the perforation skip routine we had earlier.

40 COLUMN PRINTING
~~~~~~~~~~~~~~~~~~
The routine starts at line 690 and leading spaces are skipped by the loop
at line 710.  The comparison at line 770 checks for the number of
characters printed and, if there are no leading spaces it will remain at
the value of 39.  The value is increased in line 710  for each space
found.

The routine 'test' (line 800) is called if a CR character is found.  This
checks if a CR is needed and calls 'chkchr' at line 1110.  This sets the
carry flag if one of the five special characters is found and this then
branches in the test routine for printing the title and underline
correctly.

I found that titles were printed with an initial space and I have
corrected this by amending line 900.  This checks the print position held
in address &318 and, if this is zero, skips the printing of a space but a
space is printed to separate words.

If a line is completed (when the comparison at line 770 is equal) the
routine 'next' (line 960) is called.

If one of the five characters is found then a jump is made to 'skipchr' in
line 1080.  This increases the index to point to the start of the next
line.  The value of the index Y is added to 'addr' in routine 'incaddr'
line 1040 and a jump made to 'line' for printing the next line.  This
ensures that only 40 of these characters are printed.

If none of these characters is found, chkchr2 is called and this sets the
carry flag if neither a letter nor number is found, the character printed
and osnewl is called at line 1020 and 'addr' increased as above.

If the carry flag is not set, the word is not completed, and the routine
'delete' is called and the characters deleted until a character other than
a letter or number is found.  The index is then pointing to this character
and this is then printed and the word printed on the next line.

Line 1250 resets the carry flag if a ' or / is found to avoid splitting
words containing these characters.

The routines 'bd' and 'it' provide the fonts by getting the definition
with routine 'getdef' (line 1840) and altering the bytes in 'block'.  The
character (CHR$255) is then made up using VDU23 in routine 'makchr' to
make the coding suitable for the Master.  For the printer, the necessary
codes are set in the string variables bold, ital and normal.

THE MENU
~~~~~~~~
The single menu appears as the separate menus but is combined into one by
having the data of the six menus contained in the DATA lines at the end of
the program and perhaps I should explain these first.  Line 900 is for the  
Main menu and lines 910 onwards for the Sub menus.

The data is -  Title, No. of menu options, List of menu options,
Directory, Key string, R%, Filename, No. of files, Program filename, No.
of drawings, Drawing filename, MODE no. of drawings.

The title is read in line 90 and the disc number added to form the string
T$.  This is centralised and printed with the underline together with the
cue and first two lines of the menu.

If L% is greater than 900, line 1100 is skipped and 'R Return to main
menu' is printed for the sub menus.  If L% equals 900, the two lines for
the main menu are printed and line 120 is skipped.

Line 130 prints the dividing line and line 140 is the FOR/NEXT loop to
print the menu options from the DATA lines depending on the value of L%.

Having explained how the menus are printed, I will explain how the two
programs work together.  They both work in two ways depending on whether
Z% is TRUE or FALSE.

If Z% is FALSE, as it should be on first runnung the menu, the program
runs normally, HIMEM is set to &2600, L% equal to 900 and CODE8 loaded and
the Main menu printed.  Should Z% not be zero or FALSE, you may get an
error report.  If this does happen, reset Z% to rero and re-run the menu.

When another menu has been selected, Z% will be TRUE and when RUN the
program will GOTO line 50 and, since the value of L% for the menu selcted
is retained, the selected menu will again be printed.

After printing the menu, the program READs and changes the Directory at
line 150 and the key string B$ for the keys to be used in line 170.

Line 180 Toggles M% for changing the MODE and printing 80 or 40 in the
menu in all menus and line 190 skips the lines for the main menu whem L%
is greater than 900.

Line 200 CHAINs 'PRINT' with Z% still FALSE to run the program normally
(see below) if a%=2 or, if a% equals 3 or 4, these values are reduced by
two and the program goes to line 240 to read the DATA line. This reads the
DATA for the text files in turn until a% is decreased to zero when the
correct DATA is read.  If a% is greater than 4 the value of L% will
calculated to point to the DATA line for the menu selected and the menu
procedure called again to print the new menu.
00000000  0d 48 4f 57 20 45 55 47  20 44 49 53 43 53 20 52  |.HOW EUG DISCS R|
00000010  55 4e 0d 7e 7e 7e 7e 7e  7e 7e 7e 7e 7e 7e 7e 7e  |UN.~~~~~~~~~~~~~|
00000020  7e 7e 7e 7e 20 20 20 20  20 20 20 20 20 20 20 20  |~~~~            |
00000030  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
*
00000050  20 20 20 20 20 20 20 20  20 20 20 20 20 20 0d 62  |              .b|
00000060  79 20 52 69 63 68 61 72  64 20 44 69 6d 6f 6e 64  |y Richard Dimond|
00000070  0d 0d 48 61 76 69 6e 67  20 72 65 61 64 20 52 6f  |..Having read Ro|
00000080  62 65 72 74 20 53 70 72  6f 77 73 6f 6e 27 73 20  |bert Sprowson's |
00000090  6e 6f 74 65 73 20 6f 6e  20 77 6f 72 64 20 77 72  |notes on word wr|
000000a0  61 70 70 69 6e 67 20 61  6e 64 20 68 61 76 69 6e  |apping and havin|
000000b0  67 20 72 65 2d 77 72 69  74 74 65 6e 0d 74 68 65  |g re-written.the|
000000c0  20 61 73 73 65 6d 62 6c  65 72 20 66 6f 72 20 74  | assembler for t|
000000d0  68 65 20 6e 65 77 20 63  6f 64 69 6e 67 20 2d 20  |he new coding - |
000000e0  6e 6f 77 20 43 4f 44 45  38 2c 20 49 20 74 68 6f  |now CODE8, I tho|
000000f0  75 67 68 74 20 74 68 61  74 20 49 20 77 6f 75 6c  |ught that I woul|
00000100  64 0d 65 78 70 6c 61 69  6e 20 68 6f 77 20 74 68  |d.explain how th|
00000110  65 20 6e 65 77 20 6d 65  6e 75 20 61 6e 64 20 63  |e new menu and c|
00000120  6f 64 69 6e 67 20 72 75  6e 20 74 68 65 20 64 69  |oding run the di|
00000130  73 63 73 2e 0d 0d 43 4f  44 45 20 38 0d 7e 7e 7e  |scs...CODE 8.~~~|
00000140  7e 7e 7e 0d 49 20 68 61  76 65 20 61 64 64 65 64  |~~~.I have added|
00000150  20 73 6f 6d 65 20 52 45  4d 20 6c 69 6e 65 73 20  | some REM lines |
00000160  74 6f 20 74 68 65 20 61  73 73 65 6d 62 6c 65 72  |to the assembler|
00000170  20 6c 69 73 74 69 6e 67  20 61 6e 64 20 68 6f 70  | listing and hop|
00000180  65 20 74 68 65 73 65 20  77 69 6c 6c 0d 68 65 6c  |e these will.hel|
00000190  70 20 79 6f 75 20 74 6f  20 75 6e 64 65 72 73 74  |p you to underst|
000001a0  61 6e 64 20 74 68 65 20  63 6f 64 69 6e 67 2e 20  |and the coding. |
000001b0  20 41 6c 6c 20 6c 69 6e  65 20 6e 75 6d 62 65 72  | All line number|
000001c0  73 20 72 65 66 65 72 20  74 6f 20 74 68 65 0d 61  |s refer to the.a|
000001d0  73 73 65 6d 62 6c 65 72  20 6c 69 73 74 6e 67 2e  |ssembler listng.|
000001e0  0d 0d 54 68 65 72 65 20  61 72 65 20 74 77 6f 20  |..There are two |
000001f0  63 61 6c 6c 73 20 6d 61  64 65 20 74 6f 20 74 68  |calls made to th|
00000200  65 20 63 6f 64 69 6e 67  20 66 72 6f 6d 20 74 68  |e coding from th|
00000210  65 20 6d 65 6e 75 20 27  63 6c 65 61 72 27 20 61  |e menu 'clear' a|
00000220  6e 64 20 27 70 72 69 6e  74 27 2e 20 0d 54 68 65  |nd 'print'. .The|
00000230  73 65 20 61 72 65 20 61  74 20 26 39 30 30 20 61  |se are at &900 a|
00000240  6e 64 20 26 39 30 33 20  62 75 74 20 6a 75 6d 70  |nd &903 but jump|
00000250  20 74 6f 20 74 68 65 20  73 74 61 72 74 20 6f 66  | to the start of|
00000260  20 74 68 65 20 72 6f 75  74 69 6e 65 73 2e 0d 0d  | the routines...|
00000270  63 6c 65 61 72 20 28 6c  69 6e 65 20 33 30 30 29  |clear (line 300)|
00000280  0d 7e 7e 7e 7e 7e 7e 7e  7e 7e 7e 7e 7e 7e 7e 7e  |.~~~~~~~~~~~~~~~|
00000290  7e 0d 54 68 69 73 20 72  6f 75 74 69 6e 65 20 63  |~.This routine c|
000002a0  6c 65 61 72 73 20 74 68  65 20 6d 65 6d 6f 72 79  |lears the memory|
000002b0  20 66 72 6f 6d 20 48 49  4d 45 4d 20 74 6f 20 26  | from HIMEM to &|
000002c0  34 30 30 30 20 2d 20 73  74 61 72 74 20 6f 66 20  |4000 - start of |
000002d0  61 20 4d 4f 44 45 20 33  0d 73 63 72 65 65 6e 2e  |a MODE 3.screen.|
000002e0  20 20 49 74 20 66 69 72  73 74 20 6c 6f 61 64 73  |  It first loads|
000002f0  20 74 68 65 20 61 64 64  72 65 73 73 20 6f 66 20  | the address of |
00000300  48 49 4d 45 4d 20 28 61  74 20 26 30 36 2c 26 30  |HIMEM (at &06,&0|
00000310  37 29 20 69 6e 74 6f 20  26 37 30 2c 26 37 31 20  |7) into &70,&71 |
00000320  61 6e 64 0d 74 68 65 20  6c 6f 6f 70 20 73 74 6f  |and.the loop sto|
00000330  72 65 73 20 61 20 7a 65  72 6f 20 69 6e 74 6f 20  |res a zero into |
00000340  65 61 63 68 20 62 79 74  65 20 6f 66 20 6d 65 6d  |each byte of mem|
00000350  6f 72 79 2e 20 20 54 68  69 73 20 69 73 20 6e 65  |ory.  This is ne|
00000360  63 65 73 73 61 72 79 20  61 73 20 74 68 65 0d 63  |cessary as the.c|
00000370  6f 64 69 6e 67 20 63 68  65 63 6b 73 20 66 6f 72  |oding checks for|
00000380  20 7a 65 72 6f 20 61 74  20 74 68 65 20 65 6e 64  | zero at the end|
00000390  20 6f 66 20 74 68 65 20  66 69 6c 65 2e 0d 0d 70  | of the file...p|
000003a0  72 69 6e 74 20 28 6c 69  6e 65 20 34 31 30 29 0d  |rint (line 410).|
000003b0  7e 7e 7e 7e 7e 7e 7e 7e  7e 7e 7e 7e 7e 7e 7e 7e  |~~~~~~~~~~~~~~~~|
000003c0  0d 54 68 65 20 66 6c 61  67 73 20 66 6f 72 20 70  |.The flags for p|
000003d0  72 69 6e 74 69 6e 67 20  62 6f 6c 64 20 61 6e 64  |rinting bold and|
000003e0  20 69 74 61 6c 69 63 20  63 68 61 72 61 63 74 65  | italic characte|
000003f0  72 73 20 61 72 65 20 66  69 72 73 74 20 73 65 74  |rs are first set|
00000400  20 74 6f 20 7a 65 72 6f  2e 0d 0d 54 68 65 6e 20  | to zero...Then |
00000410  6f 73 62 79 74 65 20 77  69 74 68 20 41 3d 26 38  |osbyte with A=&8|
00000420  37 20 28 2a 46 58 31 33  35 29 20 69 73 20 75 73  |7 (*FX135) is us|
00000430  65 64 20 74 6f 20 63 68  65 63 6b 20 74 68 65 20  |ed to check the |
00000440  4d 4f 44 45 20 6e 75 6d  62 65 72 20 28 6c 69 6e  |MODE number (lin|
00000450  65 0d 34 33 30 29 20 61  6e 64 20 74 68 65 20 6d  |e.430) and the m|
00000460  6f 64 65 66 6c 61 67 20  73 65 74 20 66 6f 72 20  |odeflag set for |
00000470  74 68 65 20 4d 4f 44 45  20 73 65 6c 65 63 74 65  |the MODE selecte|
00000480  64 2e 0d 0d 4c 69 6e 65  20 34 37 30 20 63 68 65  |d...Line 470 che|
00000490  63 6b 73 20 69 66 20 74  68 65 20 70 72 69 6e 74  |cks if the print|
000004a0  65 72 20 69 73 20 73 65  74 20 61 6e 64 20 73 65  |er is set and se|
000004b0  74 73 20 73 74 79 6c 65  20 66 6f 72 20 75 73 65  |ts style for use|
000004c0  20 69 6e 20 74 68 65 0d  73 75 62 2d 72 6f 75 74  | in the.sub-rout|
000004d0  69 6e 65 73 20 27 62 64  27 20 6f 72 20 27 69 74  |ines 'bd' or 'it|
000004e0  27 20 69 66 20 74 68 69  73 20 69 73 20 73 65 74  |' if this is set|
000004f0  2e 0d 0d 4c 69 6e 65 20  35 33 30 20 6a 75 6d 70  |...Line 530 jump|
00000500  73 20 74 6f 20 74 68 65  20 34 30 20 63 6f 6c 75  |s to the 40 colu|
00000510  6d 6e 20 72 6f 75 74 69  6e 65 20 61 74 20 6c 69  |mn routine at li|
00000520  6e 65 20 36 39 30 20 69  66 20 74 68 65 20 6d 6f  |ne 690 if the mo|
00000530  64 65 66 6c 61 67 20 69  73 20 73 65 74 0d 74 6f  |deflag is set.to|
00000540  20 26 46 46 2e 0d 0d 49  66 20 74 68 65 20 73 6b  | &FF...If the sk|
00000550  69 70 20 66 6c 61 67 20  69 73 20 73 65 74 20 74  |ip flag is set t|
00000560  6f 20 26 46 46 2c 20 6c  69 6e 65 20 36 33 30 20  |o &FF, line 630 |
00000570  77 69 6c 6c 20 70 72 69  6e 74 20 74 68 65 20 6c  |will print the l|
00000580  69 6e 65 66 65 65 64 73  20 74 6f 20 73 6b 69 70  |inefeeds to skip|
00000590  0d 74 68 65 20 70 65 72  66 6f 72 61 74 69 6f 6e  |.the perforation|
000005a0  73 20 77 68 65 6e 20 75  73 69 6e 67 20 74 68 65  |s when using the|
000005b0  20 70 72 69 6e 74 65 72  2e 0d 0d 57 68 65 6e 20  | printer...When |
000005c0  65 69 74 68 65 72 20 68  69 67 68 6c 69 67 68 74  |either highlight|
000005d0  20 69 73 20 73 65 74 20  6c 69 6e 65 73 20 36 34  | is set lines 64|
000005e0  30 2f 36 35 30 20 73 65  74 20 74 68 65 20 63 6f  |0/650 set the co|
000005f0  72 72 65 73 70 6f 6e 64  69 6e 67 20 66 6c 61 67  |rresponding flag|
00000600  20 66 6f 72 0d 74 68 65  20 66 6f 6e 74 20 63 68  | for.the font ch|
00000610  61 6e 67 65 20 61 6e 64  20 72 65 73 65 74 20 69  |ange and reset i|
00000620  74 20 6e 65 78 74 20 74  69 6d 65 20 74 6f 20 72  |t next time to r|
00000630  65 74 75 72 6e 20 74 6f  20 6e 6f 72 6d 61 6c 20  |eturn to normal |
00000640  70 72 69 6e 74 2e 20 20  54 68 65 0d 72 6f 75 74  |print.  The.rout|
00000650  69 6e 65 20 27 62 64 27  20 6f 72 20 20 27 69 74  |ine 'bd' or  'it|
00000660  27 20 69 73 20 63 61 6c  6c 65 64 20 77 68 69 6c  |' is called whil|
00000670  65 20 6f 6e 65 20 6f 66  20 74 68 65 73 65 20 66  |e one of these f|
00000680  6c 61 67 73 20 69 73 20  73 65 74 2e 0d 0d 54 68  |lags is set...Th|
00000690  65 20 6c 69 6e 65 20 36  38 30 20 65 6e 64 73 20  |e line 680 ends |
000006a0  74 68 65 20 27 70 72 74  27 20 72 6f 75 74 69 6e  |the 'prt' routin|
000006b0  65 20 77 69 74 68 20 61  20 4a 4d 50 20 69 6e 20  |e with a JMP in |
000006c0  38 30 20 63 6f 6c 75 6d  6e 20 70 72 69 6e 74 69  |80 column printi|
000006d0  6e 67 20 6d 6f 64 65 0d  61 6e 64 20 61 6e 20 52  |ng mode.and an R|
000006e0  54 53 20 66 6f 72 20 34  30 20 63 6f 6c 75 6d 6e  |TS for 40 column|
000006f0  20 2d 20 74 68 69 73 20  77 61 73 20 6e 65 63 65  | - this was nece|
00000700  73 73 61 72 79 20 74 6f  20 63 6f 72 72 65 63 74  |ssary to correct|
00000710  20 74 68 65 20 74 72 6f  75 62 6c 65 20 77 69 74  | the trouble wit|
00000720  68 0d 74 68 65 20 70 65  72 66 6f 72 61 74 69 6f  |h.the perforatio|
00000730  6e 20 73 6b 69 70 20 72  6f 75 74 69 6e 65 20 77  |n skip routine w|
00000740  65 20 68 61 64 20 65 61  72 6c 69 65 72 2e 0d 0d  |e had earlier...|
00000750  34 30 20 43 4f 4c 55 4d  4e 20 50 52 49 4e 54 49  |40 COLUMN PRINTI|
00000760  4e 47 0d 7e 7e 7e 7e 7e  7e 7e 7e 7e 7e 7e 7e 7e  |NG.~~~~~~~~~~~~~|
00000770  7e 7e 7e 7e 7e 0d 54 68  65 20 72 6f 75 74 69 6e  |~~~~~.The routin|
00000780  65 20 73 74 61 72 74 73  20 61 74 20 6c 69 6e 65  |e starts at line|
00000790  20 36 39 30 20 61 6e 64  20 6c 65 61 64 69 6e 67  | 690 and leading|
000007a0  20 73 70 61 63 65 73 20  61 72 65 20 73 6b 69 70  | spaces are skip|
000007b0  70 65 64 20 62 79 20 74  68 65 20 6c 6f 6f 70 0d  |ped by the loop.|
000007c0  61 74 20 6c 69 6e 65 20  37 31 30 2e 20 20 54 68  |at line 710.  Th|
000007d0  65 20 63 6f 6d 70 61 72  69 73 6f 6e 20 61 74 20  |e comparison at |
000007e0  6c 69 6e 65 20 37 37 30  20 63 68 65 63 6b 73 20  |line 770 checks |
000007f0  66 6f 72 20 74 68 65 20  6e 75 6d 62 65 72 20 6f  |for the number o|
00000800  66 0d 63 68 61 72 61 63  74 65 72 73 20 70 72 69  |f.characters pri|
00000810  6e 74 65 64 20 61 6e 64  2c 20 69 66 20 74 68 65  |nted and, if the|
00000820  72 65 20 61 72 65 20 6e  6f 20 6c 65 61 64 69 6e  |re are no leadin|
00000830  67 20 73 70 61 63 65 73  20 69 74 20 77 69 6c 6c  |g spaces it will|
00000840  20 72 65 6d 61 69 6e 20  61 74 0d 74 68 65 20 76  | remain at.the v|
00000850  61 6c 75 65 20 6f 66 20  33 39 2e 20 20 54 68 65  |alue of 39.  The|
00000860  20 76 61 6c 75 65 20 69  73 20 69 6e 63 72 65 61  | value is increa|
00000870  73 65 64 20 69 6e 20 6c  69 6e 65 20 37 31 30 20  |sed in line 710 |
00000880  20 66 6f 72 20 65 61 63  68 20 73 70 61 63 65 0d  | for each space.|
00000890  66 6f 75 6e 64 2e 0d 0d  54 68 65 20 72 6f 75 74  |found...The rout|
000008a0  69 6e 65 20 27 74 65 73  74 27 20 28 6c 69 6e 65  |ine 'test' (line|
000008b0  20 38 30 30 29 20 69 73  20 63 61 6c 6c 65 64 20  | 800) is called |
000008c0  69 66 20 61 20 43 52 20  63 68 61 72 61 63 74 65  |if a CR characte|
000008d0  72 20 69 73 20 66 6f 75  6e 64 2e 20 20 54 68 69  |r is found.  Thi|
000008e0  73 0d 63 68 65 63 6b 73  20 69 66 20 61 20 43 52  |s.checks if a CR|
000008f0  20 69 73 20 6e 65 65 64  65 64 20 61 6e 64 20 63  | is needed and c|
00000900  61 6c 6c 73 20 27 63 68  6b 63 68 72 27 20 61 74  |alls 'chkchr' at|
00000910  20 6c 69 6e 65 20 31 31  31 30 2e 20 20 54 68 69  | line 1110.  Thi|
00000920  73 20 73 65 74 73 20 74  68 65 0d 63 61 72 72 79  |s sets the.carry|
00000930  20 66 6c 61 67 20 69 66  20 6f 6e 65 20 6f 66 20  | flag if one of |
00000940  74 68 65 20 66 69 76 65  20 73 70 65 63 69 61 6c  |the five special|
00000950  20 63 68 61 72 61 63 74  65 72 73 20 69 73 20 66  | characters is f|
00000960  6f 75 6e 64 20 61 6e 64  20 74 68 69 73 20 74 68  |ound and this th|
00000970  65 6e 0d 62 72 61 6e 63  68 65 73 20 69 6e 20 74  |en.branches in t|
00000980  68 65 20 74 65 73 74 20  72 6f 75 74 69 6e 65 20  |he test routine |
00000990  66 6f 72 20 70 72 69 6e  74 69 6e 67 20 74 68 65  |for printing the|
000009a0  20 74 69 74 6c 65 20 61  6e 64 20 75 6e 64 65 72  | title and under|
000009b0  6c 69 6e 65 0d 63 6f 72  72 65 63 74 6c 79 2e 0d  |line.correctly..|
000009c0  0d 49 20 66 6f 75 6e 64  20 74 68 61 74 20 74 69  |.I found that ti|
000009d0  74 6c 65 73 20 77 65 72  65 20 70 72 69 6e 74 65  |tles were printe|
000009e0  64 20 77 69 74 68 20 61  6e 20 69 6e 69 74 69 61  |d with an initia|
000009f0  6c 20 73 70 61 63 65 20  61 6e 64 20 49 20 68 61  |l space and I ha|
00000a00  76 65 0d 63 6f 72 72 65  63 74 65 64 20 74 68 69  |ve.corrected thi|
00000a10  73 20 62 79 20 61 6d 65  6e 64 69 6e 67 20 6c 69  |s by amending li|
00000a20  6e 65 20 39 30 30 2e 20  20 54 68 69 73 20 63 68  |ne 900.  This ch|
00000a30  65 63 6b 73 20 74 68 65  20 70 72 69 6e 74 20 70  |ecks the print p|
00000a40  6f 73 69 74 69 6f 6e 20  68 65 6c 64 0d 69 6e 20  |osition held.in |
00000a50  61 64 64 72 65 73 73 20  26 33 31 38 20 61 6e 64  |address &318 and|
00000a60  2c 20 69 66 20 74 68 69  73 20 69 73 20 7a 65 72  |, if this is zer|
00000a70  6f 2c 20 73 6b 69 70 73  20 74 68 65 20 70 72 69  |o, skips the pri|
00000a80  6e 74 69 6e 67 20 6f 66  20 61 20 73 70 61 63 65  |nting of a space|
00000a90  20 62 75 74 20 61 0d 73  70 61 63 65 20 69 73 20  | but a.space is |
00000aa0  70 72 69 6e 74 65 64 20  74 6f 20 73 65 70 61 72  |printed to separ|
00000ab0  61 74 65 20 77 6f 72 64  73 2e 0d 0d 49 66 20 61  |ate words...If a|
00000ac0  20 6c 69 6e 65 20 69 73  20 63 6f 6d 70 6c 65 74  | line is complet|
00000ad0  65 64 20 28 77 68 65 6e  20 74 68 65 20 63 6f 6d  |ed (when the com|
00000ae0  70 61 72 69 73 6f 6e 20  61 74 20 6c 69 6e 65 20  |parison at line |
00000af0  37 37 30 20 69 73 20 65  71 75 61 6c 29 20 74 68  |770 is equal) th|
00000b00  65 0d 72 6f 75 74 69 6e  65 20 27 6e 65 78 74 27  |e.routine 'next'|
00000b10  20 28 6c 69 6e 65 20 39  36 30 29 20 69 73 20 63  | (line 960) is c|
00000b20  61 6c 6c 65 64 2e 0d 0d  49 66 20 6f 6e 65 20 6f  |alled...If one o|
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