Eric Hertzphone entries... wee!
Logic analyzer board has chips labelled letter number. E1 is at the low right M21 at the upper left. Letter is col. Number row ish.
The big three are intel peripheral ios and an intel timer.
Some of the chips are darn near but not impossible to read. Others I couldnt get. Nat semi seems to have used ink soluble in the clear coat... cleaning off that also cleans off the remaining label :(
Some thoughts for plausible deduction...
The logic analyzee board has traces cut off atrhe edges...dunno. maybe trying to fet away with multiple designs on a single panel purchas... done that myself... but I was 15 and in an era where fab houses were likely quite a bitdifferent than the early 80s aimed at large runs...
the kaypro board has a fallen off sticker "k2x char"... these are the crystals
Oddly no 20mhz... 18 though and 16
The copper tape on the eproms was my doing... wouldja believe they left the windows open?
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Ah, now I can see the board more clearly. Almost certainly a Kaypro 2X (i.e. not the II as I had previously thought, and that schematic I sent is not at all accurate. But I have a new one now I'll send). The chip layout seems to match the 2X, and of course there's that sticker that says 'K2X Char' (character generator in eprom again? ha)
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hah the 2x is so different from the 2?!
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I tried to send an "invite to join project" but not working at my end. Feel free to send a request!
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2x is quite different than the II (Kaypro's kooky naming). But we're good now, we have a schematic that is sane. A slight bummer is that the 2x uses a couple gate arrays which we will not be able to understand. There don't seem to be any socketed parts, so we would have to write a program to dump the boot ROM (8k on this board, only 2k on the II, what secrets lie within?)
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I kinda doubt this thing has a custom ROM... but maybe I'm mistaken. Actually now that I thonk about it, it does say Omni4 before reading the floppy. Huh. I'll try to remember to read the EPROMs next time I've access to my programmer. They are in sockets, as I recall. I think all the kaypro chops are. No ROMs on the logic analyzer board, though... unless those rare 7400 proms.
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