zasm: support multiple elements in .dw and .db

apps/zasm/directive.asm

@@ -27,16 +27,20 @@ directiveHandlers:
 
 handleDB:
 	push	hl
+.loop:
 	call	readWord
 	ld	hl, scratchpad
 	call	parseLiteral
 	ld	a, ixl
 	call	ioPutC
+	call	readComma
+	jr	z, .loop
 	pop	hl
 	ret
 
 handleDW:
 	push	hl
+.loop:
 	call	readWord
 	ld	hl, scratchpad
 	call	parseExpr
@@ -45,6 +49,8 @@ handleDW:
 	call	ioPutC
 	ld	a, h
 	call	ioPutC
+	call	readComma
+	jr	z, .loop
 	pop	hl
 	ret
 

tools/tests/zasm/test1.asm

@@ -5,9 +5,9 @@ label1:
 	ld	hl, label2
 	.dw	label2
 	; comment
-	.db	42
+	.db	42, 54
 label2: .dw	0x42
-	.dw	3742
+	.dw	3742, 0xffff
 	.dw	0x3742
 	ld	a, (label1)
 	rla \ rla