Re: TI-H: Osciloscope & Calc

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: Osciloscope & Calc
From: rabidcow@juno.com
Date: Mon, 2 Oct 2000 23:36:46 -0700
Reply-To: ti-hardware@lists.ticalc.org


heh, "easily," yeah...

well here's a partial list of test points for the ti86.  they're probly
the easiest places to solder to :)

TP# Desc
  1 RAM ?
  2 RAM A1
  3 RAM ?
  4 RAM A2?
  5 RAM A5?
  6 RAM ?
  7 RAM A7
  8 RAM A6
  9 ROM A10 
 10 ROM A11
 11 ROM A9
 12 ROM A8
 13 ROM A13
 14 ROM A14
 19 ROM D7
 20 ROM CE
 21 ROM D1
 22 ROM D2
 29 ?
 35 LCD ?
 36 LCD ?
 37 LCD ?
 38 LCD ?
 39 LCD ?
 40 LCD ?
 41 LCD ?
 42 LCD ?
 43 LCD ?
 44 LCD ?
 45 LCD ?
 46 LCD ?
 47 LCD ?
 48 LCD ?
 49 LCD ?
 51 LCD power (+v1?)
 57 RAM Vcc
 61 GND by L2
 62 GND by BATT1 +
 63 ?
 64 LINK ?
 65 LINK ?
 66 BATT1 +
 69 ?
 70 ?
 71 ?
 75 ROM ?
 76 LINK ?
 78 ?
 79 ?

-josh


On Mon, 2 Oct 2000 21:14:07 -0800 Grant Stockly <gussie@stockly.com>
writes:
> 
> Just hack an address decoder and latch and you should be able to 
> easily get
> 8 at processor bus speed...
> 
> 
> >i think that would be cool, but for a ti86 (cuz that's what i have, 
> it'd
> >be roughly the same as for an 89), or maybe a palm handheld 
> thingy.
> >the problem is that you've only got 2 i/o lines, so you'd need an
> >external processor & memory for any reasonable sample rate.
> >
> >-josh
> >

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