I replaced the 8088 in my Toshiba 1100 with the VC 20 and added the co-processor. Then soldered memory chips on top of the existing ones. I could use the upper memory area in DOS, but I could not convince the DMA chip to switch between the upper and lower 512K, so loading a driver from floppy disk into the UMB was not possible. I gave up, discovered ray tracing and got a new hobby.
That sounds like a wild ride, man. You should make a post with more of the details if you have the time. I'd love to read about it.
I bought some books about 8080 hardware and started with a photocopy of the motherboard so I could highlight the chips and the conductive traces I had identified. But I never took pictures of the process and the notebook is long gone. I went into programming instead, was proud to have created the first film sequence of a ray-traced glass ball smoothly moving on a checker board on a 8088 because I invented run length encoding, not knowing that this was a standard algorithm for the rest of the world.
Shame you don't have the old material around, but I know how that goes.
Every culture at some point is doomed to reinvent the wheel, except, for reasons unknown, niggers.
get a room already, you filthy processor porn degenerates
(post is archived)