> Evil Dave, what are the date codes for the VGA ASICs?
> If I understand your Delphic utterance, there are only TWO metal capped
> VGA, the 8580 Type 2 system board -AND- the Model 30 [ISA] VGA adapter.
> From DIMM memories, VGA would be on all 8525, 8530, 60, 65, 70, and 80.
The 72X8287 'metal-can' VGA is on the initial release (and months-later) PS/2s except for the Model 70: 50-021, Model 60, Model 80 ('Type 1' and 'Type 2'), and 8-bit board for the Model 30. P/N 90X8941 is the only version that has usage in Japanese production, although there are some implementations where Japanese influence is unknown (65SX, 70 'Type 2', one of my Model 30 286 samples). 15F6864 is in most later VGA implementations, and in rare instances, substituted with the very uncommon VGA P/N of 90X8999 and 92F0616.
You will just need to read date codes from the pictures...