Subversion Repositories NedoOS

# file opened: disp.asm
 1    0000                  OUTPUT "disp.bin"
 2    0000
 3    0000                  ORG $8000
 4    8000              phase1_start:
 5    8000                  PHASE $FFFF
 6    FFFF 41           longptr1:   DB      'A'
 7    0000 42           longptr2:   DB      'B'
 8    0001 43           longptr3:   DB      'C'
 9    0002                  UNPHASE
10    8003              phase1_end:
11    8003
12    8003 5F           normalmem:  DB      '_'
13    8004
14    8004                  ORG $FFFF
15    FFFF              phase2_start:
16    FFFF                  PHASE $FFFE
17    FFFE 2E 44        longptr4:   DB      '.D'    ; disp FFFE..FFFF, but crossing real memory $10000
18    0000 45           longptr5:   DB      'E'     ; crossing also disp $10000
19    0001 46           longptr6:   DB      'F'
20    0002                  UNPHASE
21    0003              phase2_end:
22    0003
23    0003 5F           longmem:    DB      '_'
24    0004
25    0004                  ORG $240000
26    0000              phase3_start:
27    0000                  PHASE $FFFFFF
28    FFFF 47           longptr7:   DB      'G'
29    0000 48           longptr8:   DB      'H'
30    0001 49           longptr9:   DB      'I'
31    0002                  UNPHASE
32    0003              phase3_end:
33    0003
34    0003                  ; but using the long pointers still emits the truncation warning
disp.asm(35): warning: value 0xFFFFFF is truncated to 16bit value: 0xFFFF
35    0003 21 FF FF         ld      hl,longptr7
disp.asm(36): warning: value 0x1000000 is truncated to 16bit value: 0x0000
36    0006 00 00            dw      longptr8
37    0008                  ; no warning when explicit truncation is used
38    0008 21 FF FF         ld      hl,longptr7&$FFFF
39    000B 00 00            dw      longptr8&$FFFF
40    000D
41    000D              ; added: in one project the usage of `DS 0` did uncover bug truncating longptr addresses back to 16b, fixed in v1.18.4
42    000D
43    000D                  ORG $35000
44    5000              phase4_start:
45    5000                  PHASE $46000
46    6000              longptrA:
47    6000                      DS  0,'!'
48    6000              longptrB:
49    6000                  UNPHASE
50    5000              phase4_end:
51    5000                  ASSERT longptrA == longptrB && phase4_start == phase4_end
52    5000
# file closed: disp.asm

Value    Label
------ - -----------------------------------------------------------
0x10003 X longmem
0xFFFF X longptr1
0x10000 X longptr2
0x10001 X longptr3
0xFFFE X longptr4
0x10000 X longptr5
0x10001 X longptr6
0xFFFFFF   longptr7
0x1000000   longptr8
0x1000001 X longptr9
0x46000   longptrA
0x46000   longptrB
0x8003 X normalmem
0x8003 X phase1_end
0x8000 X phase1_start
0x10003 X phase2_end
0xFFFF X phase2_start
0x240003 X phase3_end
0x240000 X phase3_start
0x35000   phase4_end
0x35000   phase4_start