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2019 Mar 25
2
Overlapping register groups in old 8-bit MC6809 processor.
...t; } class MC6809RegWithSubregs<bits<4> num, string n, list<Register> subregs, list<string> alt = []> : RegisterWithSubRegs<n, subregs> { field bits<4> Num = num; let Namespace = "MC6809"; let HWEncoding{3-0} = num; let AltNames = alt; } def sub_lo_byte : SubRegIndex<8, 8>; def sub_hi_byte : SubRegIndex<8>; def sub_lo_word : SubRegIndex<16, 16>; def sub_hi_word : SubRegIndex<16>; //===----------------------------------------------------------------------===// // Registers //===--------------------------------------------...