JavaScriptによるZ80エミュレータでの「手抜き」回転行列 - Qiita

3EB0 LD A,B0H 84 ADD A,H D660 SUB A,60H D8 RET C 1F RRA 5F LD E,A 9F SBC A,A E60F AND A,0FH 3C INC A 47 LD B,A 3ECE LD A,CEH 92 SUB A,D D69C SUB A,9CH D8 RET C CB47 BIT 0,A 2802 JR Z,+4 CB20 SLA B CB4F BIT 1,A 2804 JR Z,+6 CB20 SLA B CB20 SLA B E67C AND A,7CH 57 LD D,A CB22 SLA D 0F RRCA 0F RRCA 1F RRA 67 LD H,A 9F SBC A,A E680 AND A,80H 92 SUB A,D 6F LD L,A 3001 JR NC,+3 25 DEC H 16F3 LD D,F3H 19