> From: Rob Jarratt > The chips where I believe the RESET is oscillating on pin 23 have been > labelled E151 and E152 ... But I am not really sure if I have > identified them and the pin correctly.
E151 is the main CPU chip: http://gunkies.org/wiki/F-11_chip_set E152 is the KEF11-A floating point chip, and E150 is the KTF11-A memory management chip. Pin 1 of E150 is definitely in the lower left corner (in the photo); there's an indent on the left-hand side of the chip, for the usual DIP orientation. I'm pretty sure the other two have the same orientation. Noel