intric8 wrote:And I totally get what you're saying. But what if a given factory produced more than 9,999? How would that translate?
or you know, they could just add a 5th digit but.. I guess we will not know...
I know all the chips in my A1k have mid 85 date codes.
From BBOAH we know there are
Rev 6 (NTSC June 1985, motherboard used copper traces. Designers signatures on case)
Rev A (NTSC June 1986, motherboard uses cheaper tin traces. Designers signatures on case)
Rev B (September 1986. No signatures on case)
From serials, we see "60", "10" and "11", that corresponds to the 3 known NTSC motherboard variants.. I wonder if all the XM11's have no signatures in the case.
One listed serial is XM119.. I find it odd they were selling A1000's in 1989! 2000 came out in 87... Would they really be selling 1989 mfg'd A1k's? Let alone 1991 made A1000... the A3000 was out by then!