[Coco] rom swap with eprom?

[Steve C.]

I bought a "Personal Finance" cartridge with the intention of swapping the
rom chip inside with a Drivewire eprom, but upon opening the  cart I've
found a 24-pin un-google-able motorola part number ca 1980. I will spend
the hours searching for a schema on the web, but if anyone has a shortcut
to knowledge about compatibility with 27xxx eproms with the shack's chips,
please chime in and save me some eyestrain!

-Steve