Heathkit ETA-3400 Modifications

[James E Cosper]

>    If anyone has the manual (not sure of its exact title) describing the 
>modifications necessary to connect an ETA-3400 to an ET-3400, please email 
>me on or off-list.
>
 
Greetings,
 
I received several requests for these:
 
Microprocessor Trainer ET-3400
part number 595-2021-06, copyright date 1977
113 Pages + 3 set Foldout + "price list 10/20/80".
 
Memory and Input/Output Accessory for the ET-3400
part number 595-2271-01, copyright date 1979
95 pages.
 
Memory Input/Output Accessory ETA-3400 (Assembly)
part number 595-2170-03, copyright date 1979
57 Pages. + 1 set Foldout.
 
Modification Kit for the Heathkit ET/ETW-3400 and 3400A
Microprocessor Trainers Model ETA-3400/EWA-3400.
part number 597-1954-02, copyright ????
21 Pages.
 
I have scanned, and put them here:
 
www.jcosper.com/heathkit.html 
 
Later,     James.