What I take to be the on-board cache of 128kB of SRAM (which Chipmunk doesn't go into in any detail) is all surface-mount chips: 16244CTPV by Integrated Device Technology. What is on the TAG and cache card(s?) is all DIP (through-hole) chips without legible markings. Given the discussion in the referenced thread, these latter, especially as made-up 68-pin cards, may be every bit as scarce as they seem to be, yet it is difficult to believe that the cards were made only to populate Apple's output of WGS cards.
Perhaps Unknown_K, who may have gone more deeply into the matter, can finger both the maker of the SRAM chips and of the cards?
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