How to escape double quote in macro call

[gertk64]

Hi,

Fiddling with the Zilog Z8 and the asl assembler I run into this problem:
(this is trying to assemble Z8671 tiny basic)

In the source there is this:

S14 BC PRNT, "\"" ; PRINT STRING (WITHOUT KEYWORD)

it errors out on assembly with:

> > >tb_il_z8671.asm(93) BC(6) DS7(1): error: number of opening/closing parentheses does not match

The macro itself looks like this:

;BC a "xxx"   80xxxxXx-9FxxxxXx  String Match Branch.
BC	macro	n, s
	if "n"="*"
	db	80h
	else
	db	80h + n - $ - 1
	endif
	ds7	s
	endm

Thanks in advance for your time.
Gert