From: not@telling.you.invalid
Daniel wrote:
> not@telling.you.invalid (Computer Nerd Kev) writes:
>> Daniel wrote:
>>>
>>> Please peer review my first art. As a background I was seeking help in
>>> repacing a chip on a computer I own. The following is my best effort
>>> rendering of the schematic from the tech reference for the chip in
>>> question.
>>>
>>> To
>>> HD44102s
>>> | | | |
>>> | | | |
>>> | | | |
>>> | | | |-----------------o----------------------} To HD44102s
>>> | | |-----------------o-+----------------------} To HD44102s
>>> | |-----------------o-+-+----------------------} To HD44102s
>>> |-----------------o-+-+-+----------------------} To HD44102s
>>> | | | | o o
>>> | | | | |vvv |
>>> | | | | -++++-+-ooo- -oo-----
>>> _|_|_|_|_|||||_|_||||_|||__
>>> :------| |
>>> o------| M11 HD44103 |--} M12 HD44103
>>> :------|___________________________|
>>>
>
>> I would have done this sort of thing for the bus, without any real
>> attempt at asthetics:
I somehow got it into my mind that the bus bars were all shorted
together, this is what I meant (and what you interpreted correctly
anyway):
>>
>> |
>> | | | | |
>> | | |____________________.__|_________|_____o To HD44102s
>> | | | | |
>> | |___________________.__|__|_________|_____o To HD44102s
>> | | | | |
>> |__________________.__|__|__|_________|_____o To HD44102s
>> | | | | |
>> |___
>> | -- doesn't connect
>> to HD44102s
>
> To
> HD44102s
> | | | |
> | | | |
> | | | |
> | | | |_________________.______________________\
> | | |_________________._|_______________________\ To
> | |_________________._|_|_______________________/ HD44102s
> |_________________._|_|_|______________________/
> | | | |
> | | | | o o
> | | | | |vvv |
> | | | | -++++-+-ooo- -oo-----
> _|_|_|_|_|||||_|_||||_|||__
> :------| |
> o------| M11 HD44103 |--} M12 HD44103
> :------|___________________________|
>
>
> How does it look with the suggested changes? I added length of the PCB
> tracks, changed the horizontal lines to underscores, added the bracket,
> changed the solder points to a period instead of a lowercase 'o.'
> Removed the + signs to denote cross tracks on the PCB.
The wiring to the chip could be a bit clearer. You left a lot out
from the schematic too, I started adding some of it.
To
HD44102s
| | | |
| | | |
| | | |
| | | |__________._____________________________\
| | |__________._|______________________________\ To
| |__________._|_|______________________________/ HD44102s
|__________._|_|_|_____________________________/
| | | | VEE VDD
| | | | o o
| | | | | |
| | | | VEE 180R|~||~|18R
| | | | o | || |
| | | | | v v v |_||_|
| | | | | | | | | | ____
| | | | _|_|_|_|__|__._._._ _._.____|150R|_
_|_|_|_|_| | | | |__|__| | | |__| | |__ ~~~~__|__
--------| | ---
| | | ~
| | | | |
*----| |-| M11 HD44103 |--o M12 HD44103
| | | | |
| ____ | |
-|100K|-|_______________________________________|
~~~~
I used box-style resistors bacause I haven't had to figure out the
best ways to do American zig-zag resistors myself - I'll leave that
for you to figure out, if zig-zags are preferred.
> This is morphing into a column in an eMag that I'm writing on the
> subject of the Tandy TRS-80 Model 100. It's important that I improve my
> ascii art skills. I have to keep the drawings sized so they'll fit on a
> 80x25 screen.
There is software specifically for drawing ASCII-art schematics. I
Can't remember the name, (might be more than one program, probably
for Windows or DOS). That might be handy if you're doing a lot of it.
--
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#_ < |\| |< _#
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
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