Dumping an Intel D8749?

Short story: Anyone have the ability to dump an Intel D8749 microcontroller's internal EEPROM for me? Long story: I picked up a neat-o keen display unit. (See http://yahozna.dyndns.org/scratch/avtron/IMG_0477.JPG for a picture) It uses two *huge* Panaplex displays (Babcock SP-431's) showing 4 7-segment digits (with 2" digit height) each. It's made by Avtron, an industrial automation hardware company -- I got in touch with their support department and they helped me identify the display (it's a "K885 Extrabrite display" designed to be used with their K885 "Speed / Draw" systems). Alas, they can't provide any interface specifications (which is about what I expected), so all I know is that it uses some sort of two-pin serial interface (with connectors labeled "High" and "Low") I was thinking that if I could get a dump of the microcontroller ROM, I might be able to either (a) decipher the protocol enough to allow another microcontroller/PC to control the display, or (b) decipher the hardware enough to figure out how to write a replacement EEPROM for the onboard microcontroller... I think this thing would make a *really* cool clock... - Josh