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; Try some basic stuff
SET A, 0x30 ; 7c01 0030
SET [0x1000], 0x20 ; 7de1 1000 0020
SUB A, [0x1000] ; 7803 1000
IFN A, 0x10 ; c00d
SET PC, crash ; 7dc1 001a [*]
; Do a loopy thing
SET I, 10 ; a861
SET A, 0x2000 ; 7c01 2000
:loop SET [0x2000+I], [A] ; 2161 2000
SUB I, 1 ; 8463
IFN I, 0 ; 806d
SET PC, loop ; 7dc1 000d [*]
; Call a subroutine
SET X, 0x4 ; 9031
JSR testsub ; 7c10 0018 [*]
SET PC, crash ; 7dc1 001a [*]
:testsub SHL X, 4 ; 9037
SET PC, POP ; 61c1
; Hang forever. X should now be 0x40 if everything went right.
:crash SET PC, crash ; 7dc1 001a [*]
; [*]: Note that these can be one word shorter and one cycle faster by using the short form (0x00-0x1f) of literals,
; but my assembler doesn't support short form labels yet.
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