Home » CEEFAX disks » telesoftware15.adl » 06-05-89/PCBNCH_DMO

06-05-89/PCBNCH_DMO

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 » telesoftware15.adl
Filename: 06-05-89/PCBNCH_DMO
Read OK: ✔
File size: 209F bytes
Load address: 0000
Exec address: FFFFFFFF
File contents
#
 ********Welcome to the Prospero PC Pascal demonstration********|
 This guided tour will attempt to illustrate some of the main|
 features of this powerful yet easy to use developement system|
 *****************Press any key to continue*********************@

  Each window of information in this tour can be removed by |
 pressing any key. This will cause the demonstration to continue.|
 If you wish to halt the demonstration, and use the Workbench |
 'for real', then enter Alt-Q when any window of info appears.@

  The Prospero Pascal Workbench (this program) is a complete|
 environment for creating, editing, compiling, linking, running|
 and debugging Pascal programs.@

  Unlike many "Shell" type programs, the Prospero Workbench has|
 an editor as an integral part of the Workbench itself. This saves|
 the overhead of having to load the editor program from disk and|
 load your text into the editor every time you make a change.@

  With Prospero's Workbench that delay disappears. Your program is|
 compiled directly from the editor's buffer, and when compilation|
 is finished, you can continue editing immediately.|@

  All the options in the Workbench can be selected from the drop|
 down menus. Each menu can be pulled down by pressing the Alt key|
 together with one of the highlighted letters. So, for instance|
 pressing Alt-F makes the File menu drop down....##

�033
#
 The option required can be selected first by using cursor up and|
 down keys to highlight it, and then pressing Return to select it.|
 So, if you want to delete a file, first highlight the option|
 'Delete file'##
�080�080
#
 ......and then press Return to select it....##

&
#
 Now a path/filename window appears. At this point you could type|
 the path and name of the file to be deleted. If, however|
 you are not certain of the exact name of the file, you can dis-|
 play all the files in this directory by pressing Return##
&
#
 You could now select a file to be deleted, by highlighting it |
 using cursor control keys and then pressing Return. But, say |
 that at this stage you have decided not to delete a file. Well,|
 nothing is easier - simply press Escape to abandon the operation##
�001
#
 Now let's quickly run through the main features of the editor...##
�033�072&SINEDEMO.PAS&
#
 Editing takes place in a window like this one. All the normal|
 functions you'd expect to find in a text editor are here - for|
 example the cursor can be moved using either the cursor keys or|
 WordStar style control key combinations.##
!D!D!D!D!D!D!D!D!D
!S!S!S!S!S!S!S!S!S
#
 You can also (of course) move a word or page at a time, and|
 a variety of other cursor movement commands. |
 |
 ##
!F!F!F!F!F!F!F!F
!A!A!A!A!A!A!A!A
!C!C!C!C!R!R!R!R!QC
#
 There are a useful set of fast search and replace functions,|
 with various options ...##
!QF
cga&
#
 Specifying a global search will cause the search to start|
 from the top of the file.|##
DDDDDDDG&
!L!L
#We can also search and replace ... ||##
!QA
�083�083�083a&
A&
#
 Specifying Some will ensure that we are asked before each|
 replacement is performed ...||##
GDDDDDDDS&
�023&
�023&
�023&
�001
#
 Alternatively, we can replace all occurences - this should|
 be used with care !||##
!QA&&
DDDDA&
#
 So far, everything you have seen is no more than most good|
 text editing programs would provide. However, the Workbench|
 has various extra features to make it particularly suited|
 for editing programs. First let's quit this file##

�033�072�072�072&N

#
 For a start, you can edit up to four or eight files at|
 once, and copying pieces of text between them is simple.|
 Lets start with a new empty file ... |##

�033&FILE1&&
# Now we can start typing in our program. |||##

Program newdemo;!M
!M
# We can re-use some of the code of the other program, so|
 we'll re-open that and copy some text across ...||##
�018SINEDEMO&
# To copy a block, first we move to the start of it, and|
 select Mark Start ...||##
!X!X!X!X!X!X!X!X!X!X!X!X!X!X!X!X!X!X�048&
# ... then we move to the end and select Mark End.|||##
!C!E�048�080&
# The selected block is now displayed in inverse video.|
 Having selected the block, we use Copy to make a copy of it|
 and Alt-H ( Unmark block ) to hide it##
�048�080&
�035
#
 A copy of the marked text is now stored in an internal buffer|
 called the Clipboard. The contents of this buffer will remain|
 unchanged until the next Copy or Cut command (Cut is like Copy,|
 but it deletes the selected text after copying it).@


  We can paste this text from the clipboard anywhere we like,|
 including into a different file. Let's go back to edit window 1|
 (by entering Alt-1) and copy it into our new file.|##
�120�048�080�080&

# Other useful shortcuts can be set up, by configuring the|
 function keys. Each function key can be configured to expand|
 to a different string of up to 32 characters, so for example|
 you could have F1 = BEGIN, F2 = END, and so on.@

  You can also type control and Alt characters into these |
 strings, and make a key expand into a sequence such as|
 ^QS^G^G^G^G^X, which causes the first four characters of a|
 line to be deleted, and then moves the cursor to the next line.##

�024�080�080�080&
�083�083�083�083�083�083�083�083�083
�083�083�083�083�083�083�083�083
!QS!G!G!G!G!X
#
 So, having set up F1 to mean delete first four characters of |
 line and move to next line, lets see its affect on the first|
 few lines of this file...##

&�119�059�059�059�059

#
 Anyway, enough about the Editor, and on to the compiler.|
 The compiler is invoked from the Workbench - you don't|
 even have to save your program to disk before compiling,|
 as the compiler will read it straight from the Editor's memory.@


  The compiler options are controlled by a form in the Workbench,|
 and remain in force until next altered. Like all the Workbench|
 options, they can be saved to disk to be automatically loaded|
 next time the Workbench is run.##

�022

# Options which are selected appear with a highlighted '+' next|
 to them. In order to alter an option's current setting, the|
 option letter can be entered (this toggles its current state)@

  The S option is particularly interesting - if this is selected,|
 all Prospero extensions to Pascal are disabled, so you can be|
 sure that your program ought to compile on any Pascal compiler|
 which implements Standard Pascal.##
S

# We don't actually supply a copy of the compiler or linker|
 with this demonstration, but we can still show you how simple|
 they are to use from the Workbench. One menu selection (or a|
 single key combination) will compile your current window ... ##

&�121

# Now, we can compile this file....##

�046&

# Once compilation has been successful, another menu selection|
 or key combination will link your program (these two steps can|
 be combined by selecting Compile and Link) ... ##
�038&
# Now you can run the program, again with a single menu|
 selection or key combination ...||##
�019&

#
 Finally, if for some reason, you program does not work -|
 or perhaps it does work but you want to know why - then you|
 can use the symbolic debugger PROBE to analyse the compiled|
 program at the source level.##
�019�072&SINEDEMO&

#
 One final point - Prospero PC Pascal comes with a |
 library allowing Pascal programs to make use of 80x87|
 numeric coprocessors.|@


  To make use of these coprocessors, all that is required is to|
 replace the normal base library supplied with Prospero PC |
 Pascal with the one designed to use 80x87 coprocessors - no|
 source changes are necessary, nor even re-compilation.@


  To illustrate how much difference this can make, compare the|
 speed of this program (linked without the coprocessor) ... ||##

�019�080&

# ... with this one (identical source, but linked with a|
 different library). Note - if your PC does not have an|
 80x87 coprocessor fitted, the machine may well crash!|##

�019�080&SINDEMO2&

�017�017N
#
 That concludes the demonstration.|
 |
 You can now try out the Prospero Workbench for yourself.|
 To return to DOS, select Quit from the File menu, or type Alt-Q.##



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00000200  20 69 6e 66 6f 20 61 70  70 65 61 72 73 2e 40 0d  | info appears.@.|
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000007b0  0d 0a 23 0d 0a 20 59 6f  75 20 63 6f 75 6c 64 20  |..#.. You could |
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00000830  20 73 61 79 20 7c 0d 0a  20 74 68 61 74 20 61 74  | say |.. that at|
00000840  20 74 68 69 73 20 73 74  61 67 65 20 79 6f 75 20  | this stage you |
00000850  68 61 76 65 20 64 65 63  69 64 65 64 20 6e 6f 74  |have decided not|
00000860  20 74 6f 20 64 65 6c 65  74 65 20 61 20 66 69 6c  | to delete a fil|
00000870  65 2e 20 57 65 6c 6c 2c  7c 0d 0a 20 6e 6f 74 68  |e. Well,|.. noth|
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000008c0  9c 30 30 31 0d 0a 23 0d  0a 20 4e 6f 77 20 6c 65  |.001..#.. Now le|
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000008e0  74 68 72 6f 75 67 68 20  74 68 65 20 6d 61 69 6e  |through the main|
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00002090  20 41 6c 74 2d 51 2e 23  23 0d 0a 0d 0a 0d 0a     | Alt-Q.##......|
0000209f
06-05-89/PCBNCH_DMO.m0
06-05-89/PCBNCH_DMO.m1
06-05-89/PCBNCH_DMO.m2
06-05-89/PCBNCH_DMO.m4
06-05-89/PCBNCH_DMO.m5

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