5 ms·
Revengineered ancient PDP-11 CPUs, originals and clones
- vajrabum 6y agoThese are for Soviet clones of 11 microprocessors from the 80s I think?
- c-smile 6y ago1801BM1-3 were original Soviet micro-processors that used PDP-11 system of commands. There were also series of SM-1 and SM-2 machines that were using system of commands compatible with Hewlett Packard HP-2000. SM-1 and SM-2 were using Soviet original DOS ASPO software - OS generated by special macro processor for particular hardware configurations.
- ThePowerOfFuet 6y ago> sample decapsulating, milling die from the plastic package with CNC, then etching with 104 percents boiling oleum Then etching with... what?
- kees99 6y agoOleum. Fuming sulfuric acid. https://en.wikipedia.org/wiki/Oleum https://en.wikipedia.org/wiki/Oleum
- wolfgang42 6y agoAnd apparently the percentage is strength relative to (non-fuming?) sulfuric acid (i.e. neat sulfuric acid without sulfur trioxide added) which is why it’s over 100%.
- musicale 6y agoIt's great to see more historic hardware schematics, as well as runnable FPGA implementations of historic processors and systems.
- edoceo 6y agoCould one remake this system for QEMU ?
- deleted 6y ago[deleted]
- rnd0 6y agoWe already have simh -what would be gained?