Category: New Products

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Updates

Sorry, I have been meaning to provide some updates for a few weeks.

The backlog of orders has been resolved and orders are shipping much faster again.  Of course this depends on the size of orders and how many of them.  The more boards in an order, the longer it takes to process.

New products…

None, but I am testing some minor changes to a couple of boards and hope to order final version of the boards within the next week.

A small break…

Dec 23 through the new year holiday I will be working less on Corsham Tech projects.  My day job (the one that pays almost all the bills) has been rather demanding recently and I need a bit of a break from soldering/coding/shipping, etc.

Health news…

I underwent two rounds of chemotherapy in September and October and they went well.  The next huge step is something called a Donor Lymphocyte Infusion, or DLI.  My sister who donated cells for the bone marrow transplant in 2020 will be donating more blood, then the doctors separate out the immune system cells and transfuse them into me.  This is all outpatient processes so I will be home later that day.  For those who are really interested, my next hurdle is dealing with the graft versus host disease (GVHD).

 

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More Kits!

Due to popular demand I have added kit versions of more boards:

  • SS-50 64K RAM Board
  • SS-50 65C02 CPU Board
  • SS-50 6800 CPU Board
  • SS-50 6809 CPU Board
  • KIM Clone

The SS-50 64K RAM board is easy to assemble and probably needs no tools other than a low wattage soldering iron and good solder, not the junk sold at the local hardware store, please.  I highly recommend Kester 331 as the flux washes off with hot water.  A clean looking board sure beats one that has gobs of flux all over it.

The SS-50 65C02 and 6800 CPU boards are more complex but usually work the first time power is applied.  The designs are very forgiving and there are few parts.

The 6809 and KIM Clone boards are much more complex and have a lot more components.  6809 boards tend to be the most difficult ones to get running, usually because of a bent pin, jumpers not set right, etc.  There is no way to unit test it either; build the board and hopefully it works.  If not, plan on spending time with the schematics, a scope and maybe a logic analyzer.

The KIM Clone is built and tested in pieces so it’s easy to find where the problems are.  It is extremely rare that one does not work immediately when each section is tested after completion (power supply, USB interface, CPU running with TTY interface, LEDs, then keyboard).  The buyer should follow the build process I have on another page, not just solder everything on the board and then see if anything works.

Note that not all parts are tested, so if you thing a bad part has arrived just let me know and a replacement will be sent.