Copper, 9 , 19 , 45 , 54 , 62 , 64 , 65 , 80 , 81 , 82 , 110 , 122 , 194 , 197 , 216 , 219 affecting registers, 26 at reset, 30 bus cycles used, 20 comparison enable, 32 control register, 26 danger bit (CDANG), 26 DMA, 30 , 30 features, 19 horizontal beam position, 23 in interlaced mode, 34 in memory operations, 20 in vertical blanking interrupts, 219 instruction fetch, 25 instruction lists, 26 , 28 instructions description, 20 ordering, 27 summary, 36 interrupt, 219 interrupting the 680x0, 35 jump, 25 jump strobe addresses, 26 location registers, 25 , 30 , 32 loops and branches, 32 memory cycles, 22 MOVE instruction, 21 MOVE to registers, 21 registers, 25 resolution, 23 , 24 SKIP instruction, 31 , 32 starting, 26 , 30 stopping, 30 strobe address, 26 vertical beam position, 24 WAIT instruction, 22 , 30 , 32 with sprites, 113 with the blitter, 26 , 35