On Thu, Feb 14, 2019 at 2:53 PM Josh via cctalk <cctalk@classiccmp.org> wrote:
> The empty 40-pin should be an Intel 7224 if the card is using 7114 bubble > modules, and the 7220 if it's the 7110 bubble modules. > Although there is a datasheet for the 7224, I don't think it went into volume production. It looks like they made the 7225 instead. I'm not sure what, if any, differences there are between the 7224 and 7225; it might just be a part number change. For the 7220 used with Intel 1Mbit bubble devices (7110), one has to be sure that it's an _Intel_ 7220, usually D7220-1. The NEC μPD7220 is a graphics chip (equivalent to Intel 82720).
