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6502bench/SourceGen/SGTestData/Source/20233-rockwell.S
Andy McFadden 728966f8d2 Add W65C02S support, part 4 (of 4)
Added 20233-rockwell unit test to exercise the new opcodes.  Nothing
too fancy.

Fixed branch offset computation.

(issue #87)
2020-10-11 18:43:00 -07:00

44 lines
1.1 KiB
ArmAsm

; Copyright 2020 faddenSoft. All Rights Reserved.
; See the LICENSE.txt file for distribution terms (Apache 2.0).
;
; Test Rockwell's 65C02 extensions.
; Assembler: ACME
!cpu w65c02
* = $1000
U_DP = $10 ;don't define
G_DP = $20 ;define as global project symbol
L_DP = $30 ;define as local variable
; Verify both halves of branches are traced. In theory, BBR followed
; by BBS on the same bit number should be always-taken, but we don't
; try to model memory.
bbr0 U_DP,cont0
rts
cont0 bbs1 U_DP,cont1
rts
!byte $80,$80,$80 ;filler to get different branch offset
cont1 nop
; Access the three zero-page values in different ways. Also exercise
; backward and to-self branches.
; EDIT: add $30 to a local variable table here
rmb2 U_DP
smb3 U_DP
rmb4 G_DP
smb5 G_DP
rmb6 L_DP
smb7 L_DP
bback bbr2 U_DP,bback
bbs3 U_DP,bback
bbr4 G_DP,bback
bbs5 G_DP,bback
bbr6 L_DP,bback
bbs7 L_DP,bback
nop
rts