Analogue-sequencer

Hi,

> erm.. well i have a scope but it's a 40 year old huge not quite
> working thing which does its best to be very ornamental so i don't
> think that would be much use. i've rechecked all the solder points  and
> lines and all components and can't find anything i could have mis-
> soldered or otherwise have screwed up, so i'm think i'm going to have
> to wait for the new RAMs..

failing that, try replaceing the 74hc138 and the 573, if you have spares
it won't hurt to do so, and could save you the wait for the SRAM chips.

Its unusual to have two Chips die at the same time, it points more to a
common element of the two rather than both chips.

Just my thoughts.

Paul