@80A5.ADF - High Resolution Display
@80A5.ADF - DualPage Display (similar, rename to @80A5.ADF)
@80A6.ADF - ImageAccel Display

Ulrich Trunk's Unofficial Cornerstone ImageAccel site Expired!

Drivers

ImageAccel 1
Win95 and Win3.1x
Win NT 4.0
Win NT 3.51
OS/2 Warp 3.0 and 2.1x

CVC (Whazzat?)
MCA Windows 3.x (Not available)

MC164 (thanks, Brad!)

   Don't expect too much, the W95 drivers were just warmed over W3.XX and caused my model 95 to run in DOS mode. Maybe the NT drivers are better, I don't know as I have never tried them. The W95 drivers do support the 6091-19 as a menu option, which is kind of nice. LINK (DEAD)

MC164

This card has 8 NEC D42273V-10 VRAM chips.

MC1608C/11

   The MC1608C/11 is a 2 MB graphics card capable of driving fixed frequency monitors. It is no surprise that the Cornerstone monitors of the time (1993/4) are supported, but – pretty surprisingly – also the whole of the 6091 series by IBM.
   Selecting the monitor is done via a set of jumpers in the JP1 position of the card (top right corner).

JP1 Settings

(1) Not supported for ImageAccel 1280 controller
(2) ImageAccel 1600/70 and 1600/76 controllers only
(3) ImageAccel 1600/76 controller only
 

More info about setup under NT 4.0 at Ulrich Trunk's Unofficial ImageAccel site 

AdapterId 80A6 ImageAccel Display

Primary or Secondary Video Adapter
   Choose primary if ImageAccel is the primary display, otherwise choose secondary if VGA is the primary display. (NOTE: If you select the standard of <Primary> for the video adapter, you’ll see all DOS based messages on the monitor attached to the ImageAccel. <Secondary> means that you use the ImageAccel only for HiRes output (which would require another monitor attached permanently to the BVA).
    <"Primary">, Secondary

I/O base address
   Choose a 2 byte I/O block with no conflicts
    <"2000" (2000-2001)>, 2010 (2010-2011), 4000 (4000-4001), 4010 (4010-4011)

Memory base segment address
   Choose a 8K memory block with no conflicts.
    <"0DE000" (DE00-DFFF)>, 0DC000 (DC00-DDFF), 0DA000 (DA00-DBFF), 0D0000 (D000-D1FF), 0CE000 (CE00-CFFF), 0CC000 (CC00-CDFF), 0CA000 (CA00-CBFF), 0C0000 (C000-C1FF)

Interrupt Selection
   Choose an interrupt with no conflicts.
     <"IRQ 10">, 11, 5, 3

   The settings are not critical as long as they don’t conflict with other settings. 

CS Fixed Frequency Color Monitors with ImageAccel Video Controllers.
Monitor - Color 21/76, Color 20/70, Color 19 
 
  The Color 21/76, Color 20/70 and Color 19) are fixed frequency color monitors. These monitors are not compatible with standard VGA video controllers. Standard VGA video cards require a monitor that operates at 31.5KHz horizontal scan frequency with a 60Hz vertical refresh rate. These monitors have only been tested using the following ImageAccel video controllers. 
                               
Color 21/76  ImageAccel 1 - MC 1608C/11 
Color 20/70  ImageAccel 1 - MC 1608C/11, 1608C/12 
Color 19       ImageAccel 1 - MC 1608C/10, 1608C/11, 1608C/12