Analogue-sequencer

--- In analogue-sequencer@yahoogroups.com, "Colin f" <colin@c...> 
wrote:
> That sounds like the right sort - nearly any CMOS 62256 type should 
do.

ran out to get them but so did the only shop that has them around 
here. run out that is. got them on order; should be in on saturday.

> Have you checked the orientation of the 74HC573 address latch ?

yup. it won't power up if it's the wrong way round so that's pretty 
obvious.

> And you haven't got it mixed up with one of the 74HC574 ?

no..

> (not implying
> you're daft - I've made that mistake before myself !)

what? the mistake of implying i'm daft? don't worry, i've been 
implied to be much worse things than daft ;)
 
> If you have a scope, you could check the activity 

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..