toolchain built but file format problems

binutils 2.15 built without much problems on a linux(fedora core 2) box using --target=m88k-ncd-none. For a test, I decided to use the one instruction "jmp r1" which for the 88k means return.

gas, ld, and strip did what it's supposed to and I ended up with a reasonable looking 88k BCS executable. Howerer, when I go to boot this on the NCD, it gives me "Incorrect object file" error. I've tried a number of things to tweek the executable to look more like the Xncd19c file, but nothing seems to work.
To verify that a "jmp r1" would work, I copied and modified the Xncd19c file and replaced the first instruction with "jmp r1". This time I got a "File corrupted CRC error". Oops. Upon further inspection, it looks like the ncd looks in the coff timestamp field for a checksum. Substituting zeros here didn't make it work any better. Sigh, I guess I'm gonig to go look at CRC now.

11/12 -- further investigation shows that the timesamp field is not what holds the crc, or I'm not sure how the crc is calculated. I assumed the crc is calculated on the whole file with the crc field set to zero, but quite a number of trial and errors produced no good information.
I'm now guessing that the .bss segment or perhaps the .text or .data contains the CRC. sigh.