This is more of a very, very long comment on the futility of the search so far.
The first real use I was able to find is
but this makes me think by then the word was known enough it didn't even warrant an explanation. So it must have been coined earlier. When?
texdr.aft's comment notes:
There is an entry in OED online (link if you have access to it), and ...
I'm not familiar with Amiga specifically, but, in the general case as you'd see with something like tools for manipulating ROMs of console cartridges:
The system being dumped will typically return more than 8 bits at a time. (The 16-bit data bus OmarL mentioned), which means that the resulting values can be stored in little-endian or big-endian format.
Splitting the ROM is not the same as byte-swapping the ROM.
Amiga ROMs are usually split so that odd locations and even locations are stored in separate chips. This is because the 68000 has a 16-bit databus (i.e., it can fetch data 16 bits at a time), and the ROMs are normally 8 bits wide. The solution is to use two ROMs, so that one can contain the even ...