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Removing offtopic Section C't 512 KB internal RAM expansion

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nurgle:
May I remove the offtopic section of the following page, please?

http://www.cpcwiki.eu/index.php/C%27t_512_KB_internal_RAM_expansion

Devilmarkus:

--- Quote from: nurgle on 23:27, 06 May 10 ---May I remove the offtopic section of the following page, please?

http://www.cpcwiki.eu/index.php/C%27t_512_KB_internal_RAM_expansion

--- End quote ---

Good idea.
I find it's crap.
But let's check the other reactions...

Octoate:
Yep, unimportant for this article and not even hardly CPC related.

nocash:
Thanks for asking. Yes, it's not important to me. Remove it if you don't want it there.

Meanwhile I found more serious info (asked in the c't forum 1-2 months ago, if somebody has those old articels, and surprisingly somebody mailed them a few days ago, when I was no longer hoping for it.

Working on the article at the moment... but it's still messy. Just uploaded a "colorized" schematic. It should be much clearer than the original schematic.

Does somebody understand the syntax for the PAL chip? For example,


--- Code: ---  IF (VCC) X = A * B +
                    C * D

--- End code ---

My current conclusions (may be wrong):
"IF (VCC)" means nothing, can be ignored.
"*" means AND
"*" has priority above "+"
"+" means ...what? xor? or?

Another example,

--- Code: ---  IF (GND) /Y = /Y

--- End code ---

I guess that doesn't mean anything at all (?) and can be ignored, too.

nurgle:

--- Quote from: nocash on 01:45, 07 May 10 ---Thanks for asking. Yes, it's not important to me. Remove it if you don't want it there.

--- End quote ---

Done.

Btw. Disregarding the removed section this is a good article indeed! Lots of info you collected there. Of course your frequent changes drew me to the article in the first place (via recent changes). Unfortunately I can not help with the content. I find it puzzling that I did not yet meet anyone who actually built this extension. Have to ask around on next XzentriX.

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