The assembler syntax closely follows the 'Z80 family CPU User Manual' by Zilog. In expressions a single = may be used as “is equal to” comparison operator.
Suffices can be used to indicate the radix of integer constants; H or h for hexadecimal, D or d for decimal, Q, O, q or o for octal, and B for binary.
The suffix b denotes a backreference to local label.