Subversion Repositories NedoOS

# file opened: non_disp_adr_operator.asm
 1    0000              ;; DEVICE + DISP case
 2    0000                  DEVICE ZXSPECTRUM1024
 3    0000                  SLOT 2
 3    0000                ORG $8000, 2
 3    8000                DISP $A000, 3
 4    A000                      ; inside DISP block displaced to fake $A000 and page 3
 5    A000                      ; machine code landing to $8000 and page 2 (physically)
 6    A000              dispAdr     EQU     $
 7    A000              dispPage    EQU     $$
 8    A000              noDispAdr   EQU     $$$     ; (!) this symbol has still "page" set to 3 (disp page)
 9    A000              noDispPage  EQU     $$$$    ; you must use `$$$$` operator to extract non-disp page
10    A000                  ENT
11    8000
12    8000                  ASSERT $A000 == dispAdr
13    8000                  ASSERT 3 == $$dispAdr
14    8000                  ASSERT 3 == dispPage
15    8000                  ASSERT $8000 == noDispAdr
16    8000                  ASSERT 2 == noDispPage
17    8000
18    8000                  ; "2 == $$noDispAdr" would be more logical, but impossible to implement in simple way
19    8000                  ASSERT 3 == $$noDispAdr
20    8000
21    8000              ;; NO_DEVICE + DISP
22    8000                  DEVICE NONE
23    8000                  ORG $C000
23    C000                DISP $E000
24    E000                      ; inside DISP block displaced to $E000, machine code landing to $C000
25    E000                      ; no pages, because no virtual device is used
26    E000              dispAdr2    EQU     $
non_disp_adr_operator.asm(27): error: Unexpected: $
27    E000              dispPage2   EQU     $$      ; error: unexpected "$"
28    E000              noDispAdr2  EQU     $$$
29    E000              noDispPage2 EQU     $$$$
30    E000                  ENT
31    C000
32    C000                  ASSERT $E000 == dispAdr2
33    C000                  ASSERT $C000 == noDispAdr2
34    C000                  ASSERT -1 == noDispPage2
35    C000
36    C000              ;; NO_DEVICE + NO_DISP
37    C000                  ORG $4000
38    4000                      ; NO disp block, no DEVICE block
39    4000              dispAdr3    EQU     $
non_disp_adr_operator.asm(40): error: Unexpected: $
40    4000              dispPage3   EQU     $$      ; error: unexpected "$"
non_disp_adr_operator.asm(41): error: Unexpected: $$
41    4000              noDispAdr3  EQU     $$$     ; error: unexpected "$$"
non_disp_adr_operator.asm(42): error: Unexpected: $$$
42    4000              noDispPage3 EQU     $$$$    ; error: unexpected "$$$"
43    4000
44    4000                  ASSERT $4000 == dispAdr3
45    4000
46    4000              ;; DEVICE + NO_DISP
47    4000                  DEVICE ZXSPECTRUM1024
48    4000                  SLOT 1
48    4000                ORG $6000, 4
49    6000                      ; inside DISP block displaced to fake $A000 and page 3
50    6000                      ; machine code landing to $8000 and page 2 (physically)
51    6000              dispAdr4    EQU     $
52    6000              dispPage4   EQU     $$
non_disp_adr_operator.asm(53): error: Unexpected: $
53    6000              noDispAdr4  EQU     $$$     ; error: unexpected "$"
non_disp_adr_operator.asm(54): error: Unexpected: $$
54    6000              noDispPage4 EQU     $$$$    ; error: unexpected "$$"
55    6000
56    6000                  ASSERT $6000 == dispAdr4
57    6000                  ASSERT 4 == $$dispAdr4
58    6000                  ASSERT 4 == dispPage4
59    6000
60    6000              ;;;; extended test/example after explicit ",pageNum" was added to EQU mechanics
61    6000
62    6000              ;; DEVICE + DISP case
63    6000                  DEVICE ZXSPECTRUM1024
64    6000                  SLOT 2
64    6000                ORG $8000, 2
64    8000                DISP $A000, 3
65    A000              nda1        EQU     $$$,$$$$    ; this symbol has now page 2 (not disp page 3)
66    A000                  ENT
67    8000
68    8000                  ASSERT $8000 == nda1
69    8000                  ASSERT 2 == $$nda1
70    8000
71    8000              ;; NO_DEVICE + DISP
72    8000                  DEVICE NONE
73    8000                  ORG $C000
73    C000                DISP $E000
74    E000              nda2        EQU     $$$,$$$$    ; extended example after adding explicit ",pageNum" to EQU
75    E000                  ENT
76    C000
77    C000                  ASSERT $C000 == nda2
non_disp_adr_operator.asm(78): error: Unexpected: $nda2
78    C000                  ASSERT $$nda2               ; error: "unexpected $nda2", $$label is disabled w/o device
79    C000
80    C000              ;; NO_DEVICE + NO_DISP
81    C000                  ORG $4000
non_disp_adr_operator.asm(82): error: Unexpected: $$,$$$$
82    4000              nda3        EQU     $$$,$$$$    ; error: "unexpected $$,$$$$"
83    4000
84    4000              ;; DEVICE + NO_DISP
85    4000                  DEVICE ZXSPECTRUM1024
86    4000                  SLOT 1
86    4000                ORG $6000, 4
non_disp_adr_operator.asm(87): error: Unexpected: $,$$$$
87    6000              nda4        EQU     $$$,$$$$    ; error: "unexpected $,$$$$"
88    6000
# file closed: non_disp_adr_operator.asm

Value    Label
------ - -----------------------------------------------------------
0xA000   dispAdr
0xE000   dispAdr2
0x4000   dispAdr3
0x6000   dispAdr4
0x0003   dispPage
0xE000 X dispPage2
0x4000 X dispPage3
0x0004   dispPage4
0x8000   nda1
0xC000   nda2
0x4000 X nda3
0x0004 X nda4
0x8000   noDispAdr
0xC000   noDispAdr2
0x4000 X noDispAdr3
0x0004 X noDispAdr4
0x0002   noDispPage
0xFFFFFFFF   noDispPage2
0x4000 X noDispPage3
0x0004 X noDispPage4