On Mon, 9 Nov 2009, Philip Lord wrote: > Seems that all the inputs are pulsing except 9 and 10 which are at 0V. All > the outputs seem to be at 0V. > I downloaded the 2316 datasheet and looking that the truth table: > > if CE = Low, WE = Hi and OE = Low, then the mode is READ, Output is ACTIVE, > and power is ACTIVE. > > Unfortunately I don't actually know what all that means :-( It means the 2316 is being read. Since it is being used as a character ROM, that is normal. Pins 9 and 10 being low would mean you are not changing the 2 low bits of the character. That would mean that if you typed d, e, f, and g, the output would all be the same. Alternatively, the signal could be changing so fast your probe cannot see it. wlevak@sdf.lonestar.org SDF Public Access UNIX System - http://sdf.lonestar.org Message was sent through the cbm-hackers mailing listReceived on 2009-11-10 07:00:03
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