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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