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Atari Mega Archive 1
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68KTOIRE.PI3
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Degas High Resolution Picture (PI)
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1990-09-30
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OCR:
Arithmetic logic shift Binary BCD and add, addx, addq abcd eor ( + ) circular logic arithmetic divs, divu nbcd not rol 1sl as1 extend or compare ror 1 sr asr (sign for .b, . w) sbcd mulu, muIs bit fiddle branch neg sub, subq, subx (z := ~ bit) n bits bcc trapv (exception) bchg(invert) chk (exception) bsr bclr CMP <ea>, Dn dbcc (loop) bset SCC (set a flag byte per cc) jmp btst tst <ea> (- 0 +) jsr <bmi ><beq><else plus> rte move, modify stack misC. rtr clr pea illegal rts exg (2 registers) link nop move, moveq, movep unlk reset bsr stop movem (multiple registers) j sr tas (test & set) lea swap (upper, lower) rts trap (call OS) rtr rte syntax Subtract effect (always) usual formats The relational operators are Dn, < c=> dest := dest-src source, dest inverted as to sense. << a>,Dn operand addq, subq, moveq syntax Divide m1h Dn lower <ca>. Multiply #<data>, <== > quotient source dest 19 16_bit 8/30/90 Dn upper remainder product bits 9/30/90
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