cpm.bin: ipl.bin bios.bin CPM.SYS
dd conv=sync bs=128 count=1 if=ipl.bin > cpm.bin
dd conv=sync bs=128 count=44 if=CPM.SYS >> cpm.bin
cpm.bin: ipl.bin bios.bin CPM.SYS
dd conv=sync bs=128 count=1 if=ipl.bin > cpm.bin
dd conv=sync bs=128 count=44 if=CPM.SYS >> cpm.bin