System variables
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5C67: BREG - Calculator's B register
Read by the routines at
PO_SCR
and
fp_calc_2
, and updated by the routines at
OUT_LINE
,
CALCULATE
and
dec_jr_nz
. This system variable is accessed by some routines via the
IY
register at
IY
+$2D.
BREG
5C67
DEFB $00
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