I'm afraid I don't know what these modes are, but I suspect they may be the modes that have existed as from the OCS, rather than the ECS and AGA chipsets. I've recently been getting back into Deluxe Paint III on a PAL Amiga A500 Plus. The screen modes available are 320x256 with 32 or 16 colours (or less), and 640x256 colours with 16 colours (or less), as well as the same screen modes but with EHB. Of course, I could also limit the modes to 200 (NTSC) on the vertical axis. Could I use any or all of these modes with the NEC MultiSync LCD 1770NX monitor? If not, then I'd better stop bidding for an adaptor on eBay.
Standard Amiga output is 15 kHz. Unless your monitor can handle that your out of luck. Some monitors will handle it but don't list it in their specs. My Dell ST2320L works, but doesn't list 15 kHz as being supported. There's a thread here somewhere which lists a number of monitors that will work.
