[Techtoolslist] Looking for Kush N' Stuff Amusement Electronics manuals...

[John Robertson]

Rodger Boots wrote:

> At least the gates are drawn as gates and not the "military" blocks 

> used on PSE schematics.

>

>

Destruction Derby - ChiCoin, Demolition Derby -Exidy.

I have deciphered the gates a bit - there are four letters and sometimes 
a number at the front ... #XXXX.

The first letter is the page the signal first appears, pages are 
lettered A, B,...Y, Z.

I am going to spend some more time on Monday working out what the # and 
second digit refer too. You know these look a lot like Atari schematics 
of the same time - I am comparing Crash N Score and it appears close 
(comparing in my memory that is, as the DD schematic is at the shop and 
I only have an electronic CNS version).

If the configuration is X### then it is usually a pullup (A999) 
generated by a 7404 gate with the input tied to ground.

Gotta love working on early logic boards - get to pull out my logic clip 
and logic comparator, plus HP pulse generator, scope, and HP Signature 
voltmeter (has a frequency counter - handy for troubleshooting H & V 
counters).

John :-#)#

> John Robertson wrote:

>> OK, this is a real long shot, but perhaps someone here has a copy of 

>> the Exidy/ChiCoin service booklet (#8) put out by Kush N' Stuff  and 

>> hasn't sent it off the City of Berwyn...man I hate old TTL schematics 

>> as drawn by Exidy/ChiCoin!

>>

>> http://www.cityofberwyn.com/bronzeage/

>>

>> Their schematics have small groups of ICs with labels like "5BDGC" on 

>> inputs and outputs and you nave to find the other end of it...

>>

>> Currently I'm servicing a Chi-Coin Demolition Derby and wish I had 

>> more info on the nomenclature used.

>>

>> John :-#(#

>>

>

>



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