ALDL converter

[Robert J. Korn]

I cant seem to et this through. Last time got an SMTP error

> 
> Here is a simple interface to convert logic level to rs232. It assumes
> the
> I/O pin is bidirectional. If you dont want that just remove the
> inverter.
> 
> This is used in some of my projects and seems to be the simplest
> interface
> to the aldl. You need Regulated +5v or you'll fry the ecm. Tweak the com
> port
> for 8228 buad and it should allow logging the data......
> 
> Look feasible ?   As Always, proceed at your own risk.........
> 
>     ---------------------------------------------------------------
>               +-------------+  +
>   +-----------|1          16|---+---o +5V (VCC)
>  +|          +|             |  ===
>  === +5V o-||-|2  MAX232  15|---+---o GND (card & RS-232)
>   |           |             |
>   +-----------|3          14|
>            +  |             |        o +5V
>      +---||---|4          13|        |
>      |        |             |        \
>      +--------|5          12|        / 10K
>           +   |             |        \
>      GND o-||-|6          11|        /
>               |             |        |
>      RxD o----|7  ---<--- 10|--------+----------+----o ALDL I/O
>               |             |              |\   |
>      TxD o----|8  --->---  9|--------------| |--+
>               +-------------+             1|/ 2
>                                           74LS07
>