hex numbers in asm blocks

[boriel]

I hadn't, no - and that seems to work fine. I'm obviously basing my tests on outdated info.

Many thanks!

The FFh is all letter, and the compiler/assembler think its an identifier.
If you want to ensure it knows it's a hex number, prefix it with 0. So FFh should be 0FFh.
This is common to all assemblers. Any hex number starting with a letter and ending with 'h' must be prefixed with 0. Thus:

A3h => Error (it's an 'identifier'). Use 0A3h
2Bh => Ok (Already starts with a number).

Using the $ prefix is always ok and avoids this problem.