how to merge hex appoint address

[JustQY]

i have 2 hex file，1.hex,2.hex(start address 0x8000)
now i want merge 2.hex to 1.hex to appoint address ,i use the command below

srec_cat 1.hex -Intel 2.hex -Intel -offset 0x7C0000 -o app.hex -Intel
it works ok，but the content of 2.hex start at 0x7C8000,i just want it start from 0x7C0000.
can you please tell me how to resove this?

[jtxa]

As long as you now the addresses, simply make the offset smaller:

srec_cat 1.hex -Intel 2.hex -Intel -offset 0x7B8000 -o app.hex -Intel