# file opened: dup_index_var.asm
 1    0000              	MACRO filler x1, x2, y1, y2
 2    0000 ~            		DUP (y2 - y1), .y
 3    0000 ~            			DUP (x2 - x1), .x
 4    0000 ~            				DB x1 + .x, y1 + .y
 5    0000 ~            			EDUP
 6    0000 ~            		EDUP
 7    0000 ~            		IF .x	; index variable does exist after DUP with last used index (not +1 beyond it!)
 8    0000 ~            			DD 0xA0DED1BA	; but this is not documented and rather shouldn't be used at all
 9    0000 ~            		ENDIF
10    0000              	ENDM
11    0000
12    0000              	filler 3, 5, 10, 12
12    0000             >		DUP (12 - 10), .y
12    0000             >			DUP (5 - 3), .x
12    0000 03 0A       >				DB 3 + .x, 10 + .y
12    0002 04 0A       >				DB 3 + .x, 10 + .y
12    0004             >			EDUP
12    0004             >			DUP (5 - 3), .x
12    0004 03 0B       >				DB 3 + .x, 10 + .y
12    0006 04 0B       >				DB 3 + .x, 10 + .y
12    0008             >			EDUP
12    0008             >		EDUP
12    0008             >		IF .x	; index variable does exist after DUP with last used index (not +1 beyond it!)
12    0008 BA D1 DE A0 >			DD 0xA0DED1BA	; but this is not documented and rather shouldn't be used at all
12    000C             >		ENDIF
13    000C              	filler 100, 101, 200, 201
13    000C             >		DUP (201 - 200), .y
13    000C             >			DUP (101 - 100), .x
13    000C 64 C8       >				DB 100 + .x, 200 + .y
13    000E             >			EDUP
13    000E             >		EDUP
13    000E             >		IF .x	; index variable does exist after DUP with last used index (not +1 beyond it!)
13    000E ~           >			DD 0xA0DED1BA	; but this is not documented and rather shouldn't be used at all
13    000E             >		ENDIF
14    000E
15    000E              	DUP 4   ,   idx			; eol comment test
16    000E 12 00       >		DB    0x12, idx
16    0010 12 01       >		DB    0x12, idx
16    0012 12 02       >		DB    0x12, idx
16    0014 12 03       >		DB    0x12, idx
17    0016              	EDUP
18    0016
19    0016              main:
20    0016              	DUP 2   ,   .idx		; eol comment test
21    0016 23 00       >		DB    0x23, .idx
21    0018 23 01       >		DB    0x23, .idx
22    001A              	EDUP
23    001A
dup_index_var.asm(24): error: [DUP/REPT] invalid index variable name: @idx2
24    001A              	DUP 1   ,   @idx2		; only local label prefix "." is supported for index variable name
dup_index_var.asm(25): error: Label not found: idx2
25    001A 34 00       >		DB    0x34, @idx2
26    001C              	EDUP
27    001C
dup_index_var.asm(28): error: [DUP/REPT] invalid index variable name: !idx2
28    001C              	DUP 1   ,   !idx2		; only local label prefix "." is supported for index variable name
dup_index_var.asm(29): error: Label not found: idx2
29    001C 45 00       >		DB    0x45, idx2
30    001E              	EDUP
31    001E
dup_index_var.asm(32): error: [DUP] unexpected chars: .idx
32    001E              	DUP 1 .idx				; invalid syntax, missing comma
33    001E              	EDUP
34    001E
35    001E              	DUP 1 					; w/o indexVar name, eol comment test
36    001E 03 01       >		DB idx, .idx
37    0020              	EDUP
38    0020
# file closed: dup_index_var.asm

Value    Label
------ - -----------------------------------------------------------
0x0001   0>x
0x0001   0>y
0x0000   1>x
0x0000   1>y
0x0003   idx
0x0016 X main
0x0001   main.idx