diff --git a/basic/sources/assembler/sweet/opcodes.asm b/basic/sources/assembler/sweet/opcodes.asm
index ac8c065c..f3c19fd7 100644
--- a/basic/sources/assembler/sweet/opcodes.asm
+++ b/basic/sources/assembler/sweet/opcodes.asm
@@ -194,7 +194,28 @@ ShortBranchCommon:
 
 SweetAsm_BS: ;; [BS]
 	.sweetopc $0D 							; subroutine call
-	.byte 	3
+
+	ldx 	#0  							; target address
+	jsr 	EXPEvalInteger16  			
+
+	sec 									; calculate target - P 
+	lda 	XSNumber0
+	sbc 	VariableP
+	pha
+	lda 	XSNumber1
+	sbc 	VariableP+1
+	tax
+	pla 									; in X:A
+
+	sec  									; sub 2, 2 further back to allow for operand.
+	sbc 	#2
+	php
+	jsr 	AssemblerWriteByte 				; low offset
+	plp
+	txa
+	sbc 	#0
+	jsr 	AssemblerWriteByte 				; high offset
+
 	rts
 
 		.send 	code
diff --git a/basic/test.bsc b/basic/test.bsc
index 1dc5bd53..75d228b6 100644
--- a/basic/test.bsc
+++ b/basic/test.bsc
@@ -36,5 +36,7 @@ for pass = 0 to 1
 	bnz	p1
 	bm1 	p1
 	bnm1 	p1
-
+	bs 	p1
+	bs 	p2
+.p2	
 next
diff --git a/examples/basic/examples/mixedassembler.bsc b/examples/basic/examples/mixedassembler.bsc
new file mode 100644
index 00000000..a91a04e1
--- /dev/null
+++ b/examples/basic/examples/mixedassembler.bsc
@@ -0,0 +1,47 @@
+'
+'	Assembler pair test
+'
+'	Test of sweet 16 assembler, with a little 65C02
+'
+mem = alloc(512)
+for pass = 0 to 1
+	p = mem
+	o = pass * 3
+
+	nop
+
+	rs
+	rtn
+
+	set 5,32767
+	ld 	11
+	st  12
+	ld 	@13
+	st  @14
+
+	ldd @1
+	std @2
+	pop @3
+	stp @4
+	add 5
+	sub 6
+	popd @10
+	cpr 7
+	inr 8
+	dcr 9
+
+	br 	p1
+	bnc p1
+.p1	
+	bc 	p1
+	bp 	p1
+	bm 	p1
+	bz 	p1
+	bnz	p1
+	bm1 	p1
+	bnm1 	p1
+	bs 	p1
+	bs 	p2
+.p2	
+	nop
+next