Re: TI-H: Internal mem expander question


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Re: TI-H: Internal mem expander question




I told the list a while back.

www.bgmicro.com.

I bought 3 and they all worked fine.

Grant


>yea right? From where?
>
>On Fri, 20 Nov 1998 20:02:08 -0900, Grant Stockly wrote:
>
>>
>> 4x20 lcds are only $6.75.
>>
>>
>> >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
>> >
>> >
>> >
>> >
>> >
>> >_______________________________________________________
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>>
>
>
>
>
>
>_______________________________________________________
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