Reply 40 of 45, by rasz_pl
http://pdf1.alldatasheet.com/datasheet-pdf/vi … +/datasheet.pdf
missing R149 at Pin 16 of ICS9148-60 is most likely a 200ohm pullup to 3.3V
cheapest way of gimping BX board to 66MHz speeds
wrote:the only thing I have to do is weld a 10kohm smd resistor in that place?
more likely 0 or 200ohm, but first get a multimeter, set it to resistance mode and measure (on turned off computer) ICS9148-60 between
-pin 16 (our magic select signal) and pin 19 (ground)
-pin 16 (our magic select signal) and 20 (3.3V source)
-other leg of R149 and pin 19 (ground)
-other leg of R149 and 20 (3.3V source)
This will tell us what needs to be modified. This board will definitely run 100MHz, IBM simply limited cheaper version by omitting some parts.