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# file opened: align.asm
 1    0000                      STRUCT SPOS,4
 2    0000 ~            X       WORD
 3    0000 ~            Y       BYTE
 4    0000 ~                    ALIGN 2
 5    0000 ~                    BLOCK   3, '_'
 6    0000 ~                    ALIGN 4, '!'
 7    0000 ~            AD      WORD
 8    0000                      ENDS
 9    0000
10    0000                  ASSERT SPOS.X == 4 && SPOS.Y == 6 && SPOS.AD == 12 && SPOS == 14
11    0000
12    0000                      STRUCT ST2
13    0000 ~            ONEB    DB      'a'
align.asm(14): warning: Struct SPOS did use ALIGN 4 in definition, but here it is misaligned by 3 bytes
14    0000 ~            P1      SPOS    { 'bc', 'd', 'ef' }     ; will emit warning about misalignment (4 vs 3)
15    0000                      ENDS
16    0000
17    0000                  ASSERT ST2.ONEB == 0 && ST2.P1 == 1 && ST2.P1.X == 5 && ST2.P1.Y == 7 && ST2.P1.AD == 13 && ST2 == 15
18    0000
19    0000                      DEVICE  ZXSPECTRUM48
20    0000                      ; "old data" in memory (structs will be defined over, to check preservation)
21    0000                      ORG     0x8000
22    8000 41 42 43 44          db      "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
22    8004 45 46 47 48
22    8008 49 4A 4B 4C
22    800C 4D 4E 4F 50
22    8010 51 52 53 54
22    8014 55 56 57 58
22    8018 59 5A
23    801A 41 42 43 44          db      "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
23    801E 45 46 47 48
23    8022 49 4A 4B 4C
23    8026 4D 4E 4F 50
23    802A 51 52 53 54
23    802E 55 56 57 58
23    8032 59 5A
24    8034
25    8034                      ;; TEST data from structs
26    8034                      ORG     0x8000
27    8000
28    8000 41 42 43 44  POS1    SPOS    '12', '3', '4:'
28    8004 32 31 33 48
28    8008 5F 5F 5F 21
28    800C 3A 34
29    800E                      ; 4Bx old_value (to reach offset 4), X:0x1234, Y:0x56, 1Bx old_value, AD:0x789A
30    800E
31    800E 0A 50 51 52  POS2    ST2     "\n", {,,"\ne"}
31    8012 53 63 62 64
31    8016 57 5F 5F 5F
31    801A 21 65 0A
32    801D                      ; '\n' (ONEB), then 4x old value (offset), 'cbd' (X,Y), 1x old (align)
33    801D                      ; '___!' (block+align), 'e\n' (AD) => final result: "\nPQRScbdW___!e\n"
34    801D
35    801D                      SAVEBIN "align.bin", POS1, SPOS + ST2
36    801D
37    801D              ; more misalignment warnings tests
38    801D
39    801D                      ORG     0x8000
40    8000 41 42 43 44  NoWarning   SPOS    {1, 2, 3}
40    8004 01 00 02 48
40    8008 5F 5F 5F 21
40    800C 03 00
41    800E                      ORG     0x8001
align.asm(42): warning: Struct SPOS did use ALIGN 4 in definition, but here it is misaligned by 3 bytes
42    8001 42 43 44 01  Warn3B  SPOS    {1, 2, 3}
42    8005 01 00 02 5F
42    8009 5F 5F 5F 21
42    800D 03 00
43    800F                      ORG     0x8002
align.asm(44): warning: Struct SPOS did use ALIGN 4 in definition, but here it is misaligned by 2 bytes
44    8002 43 44 01 01  Warn2B  SPOS    {1, 2, 3}
44    8006 01 00 02 5F
44    800A 5F 5F 5F 21
44    800E 03 00
45    8010                      ORG     0x8003
align.asm(46): warning: Struct SPOS did use ALIGN 4 in definition, but here it is misaligned by 1 bytes
46    8003 44 01 01 01  Warn1B  SPOS    {1, 2, 3}
46    8007 01 00 02 5F
46    800B 5F 5F 5F 21
46    800F 03 00
47    8011                      ORG     0x8004
48    8004 01 01 01 01  NoWarning2  SPOS    {1, 2, 3}
48    8008 01 00 02 5F
48    800C 5F 5F 5F 21
48    8010 03 00
49    8012
# file closed: align.asm

Value    Label
------ - -----------------------------------------------------------
0x8000 X NoWarning
0x800C X NoWarning.AD
0x8004 X NoWarning.X
0x8006 X NoWarning.Y
0x8004 X NoWarning2
0x8010 X NoWarning2.AD
0x8008 X NoWarning2.X
0x800A X NoWarning2.Y
0x8000   POS1
0x800C X POS1.AD
0x8004 X POS1.X
0x8006 X POS1.Y
0x800E X POS2
0x800E X POS2.ONEB
0x800F X POS2.P1
0x801B X POS2.P1.AD
0x8013 X POS2.P1.X
0x8015 X POS2.P1.Y
0x000E   SPOS
0x000C   SPOS.AD
0x0004   SPOS.X
0x0006   SPOS.Y
0x000F   ST2
0x0000   ST2.ONEB
0x0001   ST2.P1
0x000D   ST2.P1.AD
0x0005   ST2.P1.X
0x0007   ST2.P1.Y
0x8003 X Warn1B
0x800F X Warn1B.AD
0x8007 X Warn1B.X
0x8009 X Warn1B.Y
0x8002 X Warn2B
0x800E X Warn2B.AD
0x8006 X Warn2B.X
0x8008 X Warn2B.Y
0x8001 X Warn3B
0x800D X Warn3B.AD
0x8005 X Warn3B.X
0x8007 X Warn3B.Y