C128 boot sequence

On Thu, May 24, 2018 at 01:24:18AM -0500, Jim Brain wrote:
>I think it's going to be tough to pull the Z80.  Bil Herd notes in his 
>stories that the C128 bootup relies on the Z80 pulling startup vectors 
>from low memory to handle carts like Magic Voice that play with the 
>control signals when 6502 vectors are pulled.

Yes, the C128 boots up with the Z80. I disassembled that ROM enough so 
that I was able to remove the check whether -EXROM or -GAME are pulled 
down during startup, because I did not want the computer to enter C64 
mode only because some C64 cartridge was plugged in. The Z80 also checks 
if the C= key is pressed. The C= key check is duplicated by the C128 
KERNAL ROM.

	Marko