Re: TI-H: Internal mem expander question


[Prev][Next][Index][Thread]

Re: TI-H: Internal mem expander question




Why does it have to be so big? I mean a 16x2 character LCD is perfect for
the job... and they are only 20 bucks too... I mean one line would scroll
the song info, and the other line would have misc info, like maybe the
status (Play, Stop, Pause, No Songs) and maybe time too... I mean, the
smaller the better right? Only if we could use 2.5" drives....


On Fri, 20 Nov 1998 15:52:11 -0900, Grant Stockly wrote:

> 
> >In a message dated 11/19/98 10:48:43 PM Central Standard Time,
> >gussie@alaska.net writes:
> >
> >> >I dont see what the big deal with this is grant.  Just try it whoever
> >>  >wanted to make one, and if it works, great!!  goal accomplished.
grant
> >was
> >>  >wrong.  If it doesnt work, grant was right, you have two extra
resistors
> >>  >and a switchand a nice 32k sram chip.  i dont think the calc should
have
> >>  >actual damage to it unless you seriously screwed up.
> >>  Get it?  :) having it work 50% of the time isn't fun...
> >I don't quite understand this.  Have you looked at the plans, Grant?  To
me
> >(and I don't think I know as much as you at all, but...) they make sense,
and
> >it's very hard for electronics to make sense to me.  Maybe I'm wrong,
but...
> >what would make this work 50% of the time?  It is possible it would not
work
> >at all, or work all the time, but 50%?  That just doesn't make sense to
me.
> >Keep in mind I am not flaming you, I am asking a question.
> 
> Switching CS lines improperly.  There is a setup/down time that is about
> 200ms I think.  If you leave it at high impeedance it can leave the chip
in
> unexpect states.
> 
> Grant





_______________________________________________________
Get your free, private e-mail at http://mail.excite.com/


Follow-Ups: