Assembler code
ROM:00000100
ROM:00000100 ; =============== S U B R O U T I N E =======================================
ROM:00000100
ROM:00000100
ROM:00000100 global start
ROM:00000100 start: ; CODE XREF: ROM:00000000↑j
ROM:00000100 ; start+3↓j ...
ROM:00000100 clr a
ROM:00000101 move r5,a
ROM:00000102 tst a
ROM:00000103 jne <start
ROM:00000104 move #$14,r5
ROM:00000105 movec #$13F,m6
ROM:00000107 movec #$13F,m4
ROM:00000109 move r2,r1
ROM:0000010A move #$7000,r6
ROM:0000010C move #$7400,r4
ROM:0000010E move (r1)+n1
ROM:0000010F move x:(r1)+,x0 y:(r6)+,y0
ROM:00000110 do #$140,ROM_115
ROM:00000112 mpyr y0,x0,a x:(r1)+,x0 y:(r6)+,y0
ROM:00000113 nop
ROM:00000114 move a,x:(r4)+
ROM:00000115
ROM:00000115 ROM_115: ; CODE XREF: start+10↑j
ROM:00000115 movec #$FFFF,m4
ROM:00000117 movec #$FFFF,m6
ROM:00000119 move #$72B0,r3
ROM:0000011B move #$72A8,r4
ROM:0000011D move #$72A0,r6
ROM:0000011F move #$7156,r7
ROM:00000121 do #8,ROM_129
ROM:00000123 jsr ROM_12A
ROM:00000125 nop
ROM:00000126 nop