Just to apprise that it's fixed. Turns out that 2 of the 4 Chameleons (new batch of Dec. '03) I just got had no BIOS loaded; I had changed 1 to 1MB which keeps failing to revert to 4 x 256KB; the last one I tried worked right away. I used the original solderless adaptor with a different XBox and this last modchip. It booted to Executer2 when it was *supposed* to be Cromwell Linux BIOS. No matter, though, 'cos it finally worked. I had used the LPT programmer to load various BIOS files, but I obviously failed. After I got good boot, I took the working Exec2 and saved it to 2 or the remaing 3 modchips, which now work.
This is just to try helping someone else in a similar boat.
On to the next learning curve...