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6502bench/SourceGen/SGTestData/2021-external-symbols-1.sym65
Andy McFadden 37855c8f8e Allow explicit widths in project/platform symbols, part 4 (of 4)
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.
2019-10-03 10:32:54 -07:00

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