Did you ever get around to scanning? I would be fine with the individual scans. I would assume that you could post them, then delete the individual scans...
13
crichardva
Jul 20, 2008 12:48 pm
Hi all, I'm an ET-3400 enthusiast and just found this group. I hope to post a few example programs and also keep up to date news on the class I am planning on...
14
markh893
Jul 23, 2008 1:09 am
Welcome to the group, Craig! This may not be a big group, but with all the ET-3400's that I see being sold on eBay, I would hope that we'll pick up more...
15
crichardva
Jul 25, 2008 4:39 pm
Thanks for the welcome and by the way... 1. I have all the training manuals so I can help out anybody who needs a specific few pages. No more than a few...
16
markh893
Jul 25, 2008 9:18 pm
Which manuals do you have? - Mark...
17
whipaway
Jul 25, 2008 11:52 pm
I might have these manuals already scanned and converted to PDF. If there is any interest, let me know, and I will post them here in the files section. I am...
18
whipaway
Jul 26, 2008 12:21 am
EE-3401 has been uploaded to the files section, ENJOY!...
19
whipaway
Jul 26, 2008 12:30 am
Emulate an ET-3400 on your PC with this software!...
20
whipaway
Jul 29, 2008 7:11 pm
Schematic diagram for the ETA-3400 has been uploaded into the files section....
21
markh893
Jul 30, 2008 4:14 am
Any chance of getting both ROM dumps? - Mark...
22
whipaway
Jul 30, 2008 10:43 am
Lemme find my EPROM reader and I will post that info as well ... From: markh893 <vcesat@...> Subject: [ET-3400] Re: ETA-3400 Schematic uploaded To:...
23
whipaway
Aug 24, 2008 2:19 am
The ET-3400 uses a mask-programmed MCM6830 ROM. Replacements are practically impossible to get. I am developing a MCM6830 ROM to 2716 EPROM converter that will...
24
whipaway
Sep 4, 2008 10:41 am
I don't know if anyone is looking for any ET-3400 / ETA-3400 units, but there is a seller on ebay, his ebay ID is: jet*boy He has about a dozen more of the...
25
kevin goodwin
hero2000robots
Sep 4, 2008 2:52 pm
Cool! Thanks! Kevin Goodwin aka Dr. Frankenstein www.hero2000robots.com ... From: whipaway <whipaway@...> Subject: [ET-3400] ET-3400A / ETA3400 Combe...
26
w3kq
Sep 27, 2008 8:47 pm
Hi All, I just completed scanning and posting a copy of the ET3400 Schematic. There are 4 11x17 pages (the full schematic is a 24x36 "D" size sheet) labeled...
27
mojoehand
Oct 20, 2008 5:02 am
I don't know how active this group is lately, but I would like to ask a question. Before I do, I would like to thank the two folks who posted all the great...
28
whipaway
Oct 20, 2008 10:24 am
Hi, and Welcome to the group. The ROM used in the 'A' model is pin for pin compatible with a 2716 EPROM, so it is easy to make backups of the firmware. Also,...
29
mojoehand
Oct 20, 2008 11:41 pm
I used the routine in the assembly manual that is supposed to light up the decimal point in the lefthand display. It works on all the other units, but not the...
30
mojoehand
Oct 20, 2008 11:44 pm
... Actually, I think this unit has a 2716 on it. Under the label, I can feel a quartz window, so it certainly isn't a masked PROM....
31
mojoehand
Oct 20, 2008 11:46 pm
... I know what the ETA-3400 MIO is, what is the 16-bit adapter?...
32
mojoehand
Oct 20, 2008 11:49 pm
One last thing about the "A" model. I Googled extensively, but can't find the manual or a schematic that is for this specific model. If I go with the "A"...
33
whipaway
Oct 21, 2008 12:20 am
OK, I will give that a whirl to see if it works on my 'A'. ... From: mojoehand <mojoehand@...> Subject: [ET-3400] Re: The new guy To:...
34
whipaway
Oct 21, 2008 12:22 am
Some versions of the 'A' used a 2316 ROM instead of a 2716 EPROM. They are compatible with one another. ... From: mojoehand <mojoehand@...> Subject:...
35
whipaway
Oct 21, 2008 12:26 am
The 16 bit adapter uses a Motorola MC-6809 and teaches the concepts of 16-Bit computers. The adapter kitt also includes the components and instructions...
36
whipaway
Oct 21, 2008 12:27 am
Yeah, so would everyone else on here, it seems that the schematic for the 3400A is impossible to find. ... From: mojoehand <mojoehand@...> Subject:...
37
whipaway
Oct 21, 2008 12:31 am
See pic added in accessories folder ... From: mojoehand <mojoehand@...> Subject: [ET-3400] Re: The new guy To: ET-3400@yahoogroups.com Date: Monday,...
38
mojoehand
Oct 21, 2008 6:59 am
Ok, my "A" is working now. I just needed to apply a "calibrated thumb" to U9 and U10. I'll have to pull all the chips and apply some DeOxit (or Cramolin as I...
39
kevin goodwin
hero2000robots
Oct 21, 2008 3:12 pm
Gents! this is great stuff! Makes me want to dig out the old gizmo and play with it again. Have you Gents ( or ladies if out there ) heard of a ET-100 or...
40
edorbea
Nov 8, 2008 8:18 pm
I have an ET-3400A with the 6802 processor in the white case. I purchased from ebay a 16-bit 6809 adapter module. According to the instructions, since the...
41
whipaway
Nov 9, 2008 3:19 pm
The main difference between the 6802 and the 6808 is pin 36. On the 6802, this is RE (on-chip Ram Enable) and on the 6808 this is VSS. The RE should be tied...
