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37855c8f8e
Handle situation where a symbol wraps around a bank. Updated 2021-external-symbols for that, and to test the behavior when file data and an external symbol overlap. The bank-wrap test turned up a bug in Merlin 32. A workaround has been added. Updated documentation to explain widths.
56 lines
1.7 KiB
Plaintext
56 lines
1.7 KiB
Plaintext
; Copyright 2019 faddenSoft. All Rights Reserved.
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; See the LICENSE.txt file for distribution terms (Apache 2.0).
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*SYNOPSIS Symbol set 1 for test 2021-external-symbols
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; Platform symbols aren't applied to file data.
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CodeWrap @ $0f00 $1000 ;encases program
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; SameName2 and SameName3 are replaced by later file
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SameName1 @ $2000
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SameName2 @ $2010
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SameName3 @ $2020
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; Symbols with the same values but different names are defined
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; in later files. Names are chosen to not provide a strict
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; alphabetical progression.
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;
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; These do not have widths, so we can check N+1 to confirm that it does
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; not resolve to a symbol.
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SameValA_C @ $2100
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SameValB_B @ $2110
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SameValC_A @ $2120
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; Test overlap with project symbol. Declare at $2202(4b), and $220a(1b).
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ChkProj1 @ $2200 4
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ChkProj2 @ $2204 4
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; Overlapping regions, defined within a single platform file. We
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; should always use the most-recently-defined symbol. When all
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; else is equal, alphabetical.
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Over1 @ $3000 16 ;$3000-300f, inclusive
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Over2 @ $3002 8 ;$3002-3009
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Over3 @ $3006 7 ;$3006-300c
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Over2a @ $3006 1 ;$3006
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; Expected result:
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; $3000-3001: Over1
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; $3002-3005: Over2
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; $3006 : Over4
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; $3007-300c: Over3
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; $300d-300f: Over1
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; Overlapping regions defined in multiple files. The later definition
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; takes priority. So while SepOver1 would normally end at $3102,
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; instead it steps on the first two bytes of SepOver2.
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SepOver2 @ $3102 4 ;$3102-3105, inclusive
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; Test overlap with local variable. Declare at $41(2b).
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OverVar @ $40 4
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; Test bank wrap.
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BankWrap @ $fff0 $20
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; Width specifiers on constants should be ignored.
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FatConst = $4000 8
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