Originally Posted by mark_k
The Velvet board only has 128KB chip RAM; it looks like a setting for that needs to be added to WinUAE...
Kickstart 1.0 and 1.1 should work with 128KB chip RAM. Kickstart 1.2 and 1.3 show a yellow screen.
The metal-cased development system is clearly older. But its Kickstart EPROMs have 24.60 written on the labels, so are probably newer than the velvet one.
My guess is both systems would be mostly compatible at the software level. The older one has some clues about ancient history though; cartridge slot at the front and guides/connector for the cartridge. The cut-out in the casing for the floppy drive is 5.25" size; since the Amiga was originally going to have a 5.25" drive.
The older one from looking at the other pics on the link I posted come from the 'Lorraine' days when the custom chips were on outboard pcbs!
It'd be nice to own either system imo, the Lorraine system sold for $1750 in the end (minus custom pcbs - I'm pretty sure they still exist)