I've added another ROM revision for a color Mainboard that was dumped by the same guy as the PC4i ROMs.http://oldcomputers.dyndns.org/public/pub/rechner/ncr/DMV/My_DMV_Color/2016-04-11/index.html
I've noticed a change in the behaviour of the driver, but I can't say when it was introduced:
With the two 07 revision BIOS of the color and mono ROMs, the driver works as usual.
With the two 06 revision BIOS (that is, including the new one) there is a flickering of a cursor block over the bottom line with the floppy error, moving from right to left, and the floppy error is different.
With the 05 revision, the machine stalls with the LEDs No. 5 and 8 on, which indicates a keyboard error.
Just as an aside, the correct behaviour for a DMV without a disk in the drive is this error message instead of the one produced currently.
Sorry you need to click on the links in order to see the images ... I'm still struggling with this new hoster.