I am thinking of adding hex soon.  Maybe even add ">Rect" do display hex numbers.  Right now, if you need $ABCD, you can do this: Asm(21CDAB)

Edit: Fixed little endian.

Oh and that routine I made to store a 16 bit number works like this:

When you divide a number by 256, a number in hexadecimal like $9D93 becomes $009D so it transfers the upper byte to the lower byte.  This is just like dividing in decimal. 2310 divided by 100 is 0023 if we ignore fractions.  When you do multiplication by 256, the opposite happens.  The low order byte moves to the high order byte.  $9D93 times 256 is $9300.  When you do modulus 256, it means that you only take the remainder of the division, so $9D93 becomes $0093 cutting off the high order byte.  However, I just realized that you don't need this since its automatically cut off anyway.  It can actually be this:

Write:
:A/256->{L1}:A->{L1+1}
Read:
:{L1}*256+{L1+1}->A

Oops!  I forgot about that.  Its really weird it worked for all the examples I tried it on... fixed it now.

Also, I noticed an error when you try to use a subroutine in an if statement it causes the program to freeze sometimes.  Let me know if anyone else gets this error, I'm trying to fix it.

That's correct, but you started mixing up the words "SaveScreen" and "PlotsScreen".  L1 is "SaveScreen".

But like Builderboy said, you don't need to concern yourself with the names, just know that there's are about 700 bytes there you can use for reading and writing.

Here is a little optimization I use but haven't really seen around.  When you need a direct key press, you have to wait about 7 clock cycles between setting the port and reading it.  Most people just fill in the extra space with a waste instruction like this:

ld a,xx
out (1),a
ld a,(de)
in a,(1)
and yy
9 Bytes, 43 T-States.

You can actually use the waste instruction to do something useful.  It gives a slight speed increase.

ld a,xx
out (1),a
ld b,yy
in a,(1)
and b
9 Bytes, 40 T-States.

Right, a horizontal line can be written like this:

:Lbl HL
:*12->B
:For(A,0,11)
:255->{B+A+L6}
:End
:Return

Called like this:
:Xsub(HL)

Yeah, you won't even need a title screen to hex program because when do I add splash screen support, it will just use the calc's pictures and copy the ones you choose into the program.  If you need more than 10 pictures you can always write them in Hex if you're really desperate, but I think there are some Pic-to-AppVar programs out there and I might support AppVars where you normally enter a picture.  Grayscale will take a while but I can't think of a good syntax for it yet...

Axe Parser
Alpha 0.0.6

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New Features:

• Pointers!
• Double Buffering
• Alphabetical Listings
• Character Display
• Else Statement
• If-False Statement
• New Automatic Optimizations
• Sprite Editor Updated

Changed:

• Sprites are now clipped!
• DispGraph is now SafeCopy instead of FastCopy

New example program.