Now this entry should be a fairly short one for you guys, as it's just finishing up the last of our new LOGICAL operations -- _NEGATE.

As you guys should know by now, AND/OR are *binary* operators, while _ANDALSO/_ORELSE are *logical* operators.  The first set does binary math comparison; the second set of commands simply check if values are 0 (FALSE) or not (TRUE).

Along the exact same line as these commands, we have both the old *binary* NOT and the new *logical* _NEGATE.

NOT takes a value and basically flips all the bits in it.  For example, let's look at NOT 1:

00000001  <-- this is the 8-bit representation of 1 that is stored in a byte.
------------  <-- so lets apply NOT to that value here
11111110  <-- and there's the binary representation of what NOT 1 looks like.  

NOT toggles bits for a number.  

I had a reader email me with a question regarding the new IDE lesson I just posted.

In the Options menu of the IDE and then inside Display is the Window width: input field based on characters per line in relation to mono-spaced or proportional fonts?

I'm pretty sure there is no difference, characters per line is characters per line regardless, but I want to clarify so that I have the correct information.

A new side lesson, Using the IDE (getting the most out of it), has been added to the tutorial.

I've been working on and off on this HUGE side lesson for almost 6 months now. It contains 75 illustrations, some of them animated.

Before adding the lesson I read through it a few times looking for typos but I'm sure I probably missed a few. Please let me know if you find any.

This side lesson is best viewed by beginners after going through lessons 1 through 7 first. If you're not a beginner then you'll understand the concepts covered. At the start of lesson 8 a link has been added pointing to the IDE lesson encouraging users to work through it before working on lesson 8.

You can access the IDE lesson here directly.

To recreate the bug:

Type in some code in the IDE.

Press ALT-F3 to bring up the Change window

Type something that exists in the code into the Find What: field

Type something to change it to into the Change To: field

press ALT-C to do change all

A message box appears telling you how many substitutions were made.

Press ENTER to remove the message box.

-- The message box did not get removed, the ENTER key was seen by the window underneath.
-- Now the message box reads "match not found" but the window underneath has closed.

Greetings, Programs!

Is there a table or list published somewhere (forum, wiki, etc.) that shows the 'control codes', characters, or tokens needed to use characters typically invisible - such as carriage returns, linefeeds, or tabs, for example - in the 'Change...' dialog box in the IDE?

hey guys. i want to locate a location on using sin,cos....

I am not good a math.

i want it to give me the cords of a given center x,y (center of circle) with location as 360deg from center as in l = 360d input at x,y


so lets say x=200, y=200,l=90 so it returns x,y position - 50pixel from center to l degrees of circle

: x      =  150    
:
O-----------y    =  150

if any one can help thank you...

i need to be able to pick a number from the circle at any one time and have an x,y location.   i send x,y,d and it returns x,y from center of x,y circle minus distance in deg.....

hope i said it clear... almost confused myself

Is there any documentation pointing to the use of the Math Evaluator found in the Tools menu in the IDE? I've played around with it and it makes sense mostly but it would be nice to know its strengths and weaknesses and any hidden features it might hold.

Also, this would be a far handier tool if there was a quick-key combination associated with it, such as with CTRL-K being used to insert a keyboard scan code. Having to press ALT-T-M just doesn't feel intuitive or easy.

UPDATE: That should be 1-31, not 0-31 as I previously stated. Character 0 can't be chosen.

I found a typo in a dialog box the ASCII chart displays.

The range of control characters should be 1-31 instead of 1-32 as seen in the image below.

Attached Files

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In the MS-DOS days of Norton Utilities, PC-Tools, etc., you would see programs redrawing their ASCII characters to get different boxes and characters.
We can easily create font files via the VGA Font Editor (see https://github.com/a740g/VGA-Font-Editor).
But how do we get this on the screen via SCREEN 0? No not SCREEN 13 or so.
I used to write an assembler program for that, but I've lost it, years ago....

The original post here got lost due to a forum glitch, thankfully the first reader completely quoted it in his reply, so just read on in post #2.