Home » Archimedes archive » Archimedes World » AW-1994-04-Disc1.adf » Disk1Apr94 » !AWApr94/Goodies/NumberCon/!Help
!AWApr94/Goodies/NumberCon/!Help
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 » Archimedes archive » Archimedes World » AW-1994-04-Disc1.adf » Disk1Apr94 |
| Filename: | !AWApr94/Goodies/NumberCon/!Help |
| Read OK: | ✔ |
| File size: | 19A9 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
Number Converter
By David Pratt
Version 1.00 - 02/01/94
�����������������������������������������������������������������������������
Aim - The aim of this program is to allow you to convert binary, decimal
and hexadecimal into binary, decimal and hexadecimal numbers!
Use - This program is very easy to use. To load, follow the below
instructions.
i) Double click on the !NumConv icon.
That was easy enough! To use the program follow the below instructions
i) Load up !NumConv (see above)
ii) Click on the !NumConv icon on the iconbar
iii) A window will appear
iv) To the left are three icons labelled Binary, Decimal and
Hexadecimal. You can only select one at a time. To convert a
binary number, click on the Binary icon, for decimal the Decimal
icon and for hexadecimal the Hexadecimal icon.
v) Once you have selected the icon you require, click on the
appropriate white icon on the right hand side of the window
vi) Now type in the number in the box. You will only be able to type
in certain numbers and letter in the appropriate boxes
In the Binary box only 0 1
In the Decimal box only 0 1 2 3 4 5 6 7 8 9
In the Hexadecimal box only 0 1 2 3 4 5 6 7 8 9 A B C D E F
vii) Now click on the Calculate button and the appropriate conversions
will appear in the other two boxes
viii) To clear all the boxex, click on the Clear button
This program supports interactive help. If you have RISC OS 3, click
on the Apps icon on the iconbar, and double click on !Help. Position
the pointer over the icon you want to know about. If you have RISCOS 2
then !Help will be on your Application Disc 1
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Slightly techinal parts
-----------------------
Binary numbers - Binary numbers are made up of 0's and 1's. The lowest level
language used on computers is in binary code
Decimal numbers - Decimal numbers are those from 0 to 9, the way we count
Hexadecimal numbers - Like decimal, but with A, B, C, D, E and F making it
a sixteen number system
�����������������������������������������������������������������������������
The way the program works
-------------------------
This program uses the Wimp Extension module, written by Jon Ribbens. If you
are a programmer you will possible know about Interface. WimpExt what
Interface and a lot more. It can put icons on the iconbar, to change the pointer shape, to pop icons in and out, link windows so they move about together (for toolboxes and windows-in-windows), there are facilities for options window handling, for dialogue boxes, for controlling indirected icons, for loading templates, for colour menus, for RAM templates, for dragging icons, for menu handling, for draw-files and sprites, for immediate windows, for memory management, etc., etc.). And it can do 3D icon, as you can see in this program.
And now a brief run down of the program
Lines Description
----- -----------
3 - 6 Memory allocation
13 - 26 Main Wimp poll
28 - 31 Initialisation routine
33 - 43 Loads the templates
45 - 64 Creates the meni
66 - 68 Creates the icon bar icon
70 - 77 Routine for Wimp Poll reasons 17-19
79 - 83 Error procedure
85 - 87 Redraw procedure, needed to display the 3D icons
89 - 110 Checks for mouse clicks inside the NumConv window
112 - 117 Checks whether Quit has been clicked on
119 - 123 Shutdown procedure
125 - 147 Help procedure. Sends help about the icons to !Help
149 - 153 Code that is run when the Clear icon is clicked on
155 - 213 Code that is run when the Calculate icon is clicked on. See below
157 - 162 Looks at the three radio icons in the Main window. If the Binary
one is selected, input$ is Binary, when Decimal is selected
input$ is Decimal and ...... when Hexadecimal is selected,
input$ is Hexadecimal
164 The start of a CASE statement
165 - 172 This converts the binary number into a decimal and hexadecimal
number
174 - 190 This converts the decimal number into a binary and hexadecimal
number
192 - 211 This converts the hexadecimal number into a decimal and binary
number
The main code in these parts are as below
-----------------------------------------
SYS "WimpExt_GetIcon",,,main%,6 TO ,,,number$
Reads the number in the input box and puts it into number$ as a string
IF number$="" THEN ENDPROC
If there is no number, the procedure ends
$convert=number$
SYS "OS_ReadUnsigned",2,convert TO ,,decimal
SYS "WimpExt_SetIconStringN",,,main%,7,STR$(decimal)
Converts the number into a decimal number
SYS "OS_ReadUnsigned",2,convert TO ,,hex
SYS "WimpExt_SetIconStringN",,,main%,8,STR$~(hex)
Converts the number into a hexadecimal number
SYS"OS_ConvertBinary4",EVAL(number$),convert,100 TO binary$
REPEAT
IF LEFT$(binary$,1) = "0" THEN
newlen=LEN(binary$)-1
binary$=RIGHT$(binary$,newlen)
end=FALSE
ELSE
end=TRUE
ENDIF
UNTIL end=TRUE
SYS "WimpExt_SetIconStringN",,,main%,6,binary$
Converts the decimal number into a binary number and strips any preceding
0's
$convert=number$
SYS"OS_ReadUnsigned",10,convert TO ,,hex
SYS "WimpExt_SetIconStringN",,,main%,8,STR$~(hex)
Converts the decimal number into a hexadecimal number
SYS"OS_ConvertBinary4",EVAL("&"+number$),convert,100 TO binary$
REPEAT
IF LEFT$(binary$,1) = "0" THEN
newlen=LEN(binary$)-1
binary$=RIGHT$(binary$,newlen)
end=FALSE
ELSE
end=TRUE
ENDIF
UNTIL end=TRUE
SYS "WimpExt_SetIconStringN",,,main%,6,binary$
Converts the hexadecimal number into a binary number and strips off any
preceding 0's
FOR BD=convert TO convert+99
?BD=&D
NEXT BD
SYS"OS_BinaryToDecimal",EVAL("&"+number$),convert,100
decimal$=$convert
SYS "WimpExt_SetIconStringN",,,main%,7,decimal$
Converts the hexadecimal number into a decimal number
And that's all there is to it. Simple as that. If you are a keen programmer
then WimpExt is a very good module to get and, in the words of the author,
allows you to think less 'It's a Desktop program' and more 'It's a program to
do ...'
����������������������������������������������������������������������������� 00000000 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000010 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4e | N|
00000020 75 6d 62 65 72 20 43 6f 6e 76 65 72 74 65 72 0a |umber Converter.|
00000030 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
00000050 42 79 20 44 61 76 69 64 20 50 72 61 74 74 0a 20 |By David Pratt. |
00000060 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
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*
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*
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*
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