7 Mar
1999
7 Mar
'99
2:12 p.m.
OK, here's a challenge that I hope one (or more) of
you will rise too.
I found something I didn't even know existed. It's the Heathkit Memory
I/O Accessory ETA-3400. Woo Hoo!!! Its the expansion box for the 6800
based ET-3400 Microprocessor Learning System (one of my favorite toys.)
Now for the good news, and too my dilema. It's still it kit form with
all the parts! ;))) I get to build it. I guess I'll need the
assembly/op docs for it. An external examination reveals rca jacks for
'tape input' and 'tape output' and also a rs-232 port. I gotta get this
thing up.... help!
Hey, neat! I have my ET-3400 still, and I also didn't know one of
those existed. If you find a second one, I would be much appreciative
if you would send me a pointer...
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
7 Mar
7 Mar
3:17 p.m.
At 11:12 PM 3/7/99 -0500, you wrote:
Either that, or run the PCB thru a decent scanner/copier to see if a good
enough image could be had to run a few boards? (I've got an ET-3400 too!)
-jim
---
jimw(a)agora.rdrop.com
The Computer Garage - http://www.rdrop.com/~jimw
Computer Garage Fax - (503) 646-0174
OK, here's a challenge that I hope one (or
more) of you will rise too.
I found something I didn't even know existed. It's the Heathkit Memory
I/O Accessory ETA-3400. Woo Hoo!!! Its the expansion box for the 6800
based ET-3400 Microprocessor Learning System (one of my favorite toys.)
Now for the good news, and too my dilema. It's still it kit form with
all the parts! ;))) I get to build it. I guess I'll need the
assembly/op docs for it. An external examination reveals rca jacks for
'tape input' and 'tape output' and also a rs-232 port. I gotta get this
thing up.... help!
Hey, neat! I have my ET-3400 still, and I also didn't know one of
those existed. If you find a second one, I would be much appreciative
if you would send me a pointer...
4:41 p.m.
James Willing wrote:
I made a couple of the DEC LA-36 RS232 interface boards by removing the
couple of components from the baord, putting the bare board on a piece of
diazo film, and making trial exposures until I had a piece of diazo film
that I could use directly to image new boards with. I would guess any good
photo house could do a similar operation using silver film and come up with
usable artwork. Shooting a dot pattern of the holes would give a template
for NC drilling the boards.
Hey, neat! I have my ET-3400 still, and I also
didn't know one of
those existed. If you find a second one, I would be much appreciative
if you would send me a pointer...
Either that, or run the PCB thru a decent scanner/copier to see if a good
enough image could be had to run a few boards? (I've got an ET-3400 too!)
9421
days inactive
9422
days old
2 comments
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participants (3)
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jimw＠agora.rdrop.com -
marvin＠rain.org -
mbg＠world.std.com