The C128 is a really bizarre beast It really is. It's a fantastic looking machine but the internals are just bonkers. The reason for the internal Z80 was tha

The C128 is a really bizarre beast It really is. It's a fantastic looking machine but the internals are just bonkers. The reason for the internal Z80 was that Commodore had sold all these CP/M plugin cartridges that actually had a Z80 in them, but they drew too much power and the C128 engineers pretty much unilaterally decided it was cheaper to just build in the second chip than sort out the power issue [0]. The story of how this machine was designed and built is quite hair-raising and the likes of which I doubt we'll ever see again! [0] https://www.reddit.com/r/c128/comments/682da4/c128_ama_from_bil_herd/dgvcla9/ https://www.reddit.com/r/c128/comments/682da4/c128_ama_from_...