SBC6120 (a build-it-yourself PDP-8 clone) Last Buy and End of Life
henk.gooijen at oce.com
Sun Jun 4 04:11:40 CDT 2006
> >PS. One can always order the board now and get the other parts later.
>But it's the parts that aren't RoHS compliant! Tinned leads=bad. That's
>why manufacturers are slashing production of legacy ICs (can you say DIP?)
>on a wholesale basis. If you can't sell them in the EU, why bother?
>I wouldn't fret too much, though. I suspect you could pretty much
>implement the entire thing in an FPGA with room to spare. Heck, make the
>switches and LEDs small enough and you could make working PDP-8's for use
>as dollhouse furniture.
For repair of non-RoHS complint equipment, it is still allowed to use the
"old" parts. The RoHS rule only applies to new-built equipment.
As a hobbyist you must make sure that you do not mix RoHS and non-RoHS parts
because the technique and the material to solder these parts are different.
Regarding the pdp8, I have built a pdp8-clone using the Blinkenlight Boards.
Because of the simulation of the pdp8 instructions in 6809 it is a lot slower
though. However, it does run DMS and OS/8 !
And it has an IDE drive connected to the I/O Board which looks to the pdp8
simulation as an RF08. I will soon start to add a floppy disk interface to
the simulation to add "RX01" to the 'pdp8'.
And yes, it is true, the switches (and to minor extend the LEDs) determine
the size of the frontpanel.
- Henk, PA8PDP.
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