Align 256 in Pasmo?

[cmal]

Is there a way to get the Pasmo assembler to align with a 256 byte memory location boundary? The align directive doesn't seem to work and the documentation does not list Align as an assembler directive.

[PROSM]

Here's a quick bodge I use for page alignment in Pasmo:

Code: Select all

if ($%256 != 0)
	org (($/256)*256)+256				; Align to a 256 byte page boundary
endif

EDIT: Removed extraneous brackets

[cmal]

Here's a quick bodge I use for page alignment in Pasmo:

Code: Select all

if ($%256 != 0)
	org (($/256)*256)+256				; Align to a 256 byte page boundary
endif

EDIT: Removed extraneous brackets

Holy smokes! Thanks for that. I'll give it a try.

[bobs]

I use something very similar to that, but use DEFS instead of ORG to allocate the required space to align the next instruction.

I also find it useful to store a label of that ‘padding’ size in case it’s large enough to store some data in. That also helps when re-arranging code to reduce such unused space.

[Alone Coder]

Maybe defs (-$)&255 will work, if Pasmo allows defs 0.

[ketmar]

Code: Select all

org ($+255)/256*256

oneliner too, but doesn't involve possible UB with negative numbers bitops (it is unlikely that any Speccy asm is affected, but...)

p.s.: or without mul/div. ;-)

Code: Select all

org ($+255)&0xff00

[cmal]

PROSM's suggestion worked - Thanks! I like bobs idea of using a label to keep track of the unused space so that it can be used for something later. Will give that a try.
Thanks for the other suggestions!