Re: SCELBI PCBs on order
- If MARCH needs volunteers to help build their set, I can help out.
--- In firstname.lastname@example.org, "Mike" wrote:
> I should have boards in about 2 weeks - still have to find many of the parts, but I think I have the hard ones (8008 and 1101) - most of the rest is pretty conventional 74xx series. The original units used a zener in a funky package for over voltage protection, witch I doubt can be found very easily, but there are modern equivalents. watch my blog as details unfold
> Also I've promised Evan that MARCH will get a set of bare boards for free. It will be up to MARCH to find the parts and build it up into a museum piece.
> Mike W.
> --- In email@example.com, "B. Degnan" wrote:
> > >
> > > On 01/11/2013 09:06 AM, Mike wrote:
> > > > I excited to announce that I've ordered a batch of reproduction SCELBI
> > PCBs. This will enable building of a batch of reproduction SCELBI 8Hs.
> > There is still a lot of work to do before a basic system is operational,
> > but this is a major milestone in an effort that was started in earnest
> > about 15 months ago.
> > > >
> > > > Once the basic 8H is working there is untold opportunities for follow
> > on projects, including;
> > > >
> > > > 1) reproduction chassis - although it looks bare bones, I'm pretty sure
> > the original production chassis were custom built to SCELBI specifications
> > and not modified off the shelf chassis.
> > > > 2) cassette interface
> > > > 3) TTY interface
> > > > 4) oscilloscope interface
> > > > 5) SCELBI 8B (4 additional/different PCBs required)
> > > > 6) 2 varieties of power supplies
> > >
> > > Please put me down for a set!
> > >
> > Me, too boss!
> > Bill Degnan
> the 8008 is most expensive, but not really that hard to find - I think the prices people are getting on ebay are way to high as Intel made them into the 80's.Agreed. When I went looking for 8008s, I found that you can pick them up for less than $20 apiece, especially if you're willing to take the AS-IS gamble. I picked up three for testing and found all three to be functional. Two were "desirable" gold-top purple ceramic packages from Intel, went for $16 for the pair.
I'll see if I still have the link, but someone sent me one to a surplus electronics place that was selling "remarked" 8008s (in-house numbered) guaranteed to be working 8008s for a good price.