The curious incident of the Lisp in the night-time

Gregory (Scotland Yard detective): “Is there any other point to which you would wish to draw my attention?” Holmes: “To the curious incident of the dog in the night-time.” Gregory: “The dog did nothing in the night-time.” Holmes: “That was the curious incident.” – “Silver Blaze” (Sir Arthur Conan Doyle) Yesterday, I heard a lecture […]

Posted in: Distractions, Hot Air, Lisp, NonLoper by Stanislav 11 Comments

Stierlitz Example: Memory-Mapped I/O to a Character LCD

Here is a somewhat dumb example of the kind of thing one can do with Stierlitz.  Let’s say that you have some memory-mapped I/O ports in your system architecture, which you would like to test without having a working CPU design of any kind loaded into your FPGA. The Xilinx ML501 board includes a Tianma-TM162, […]

Posted in: Cold Air, FPGA, Hardware, Lisp, LoperOS, Reversing by Stanislav 4 Comments

Stierlitz, the Fearless, Driver-Less Bus Analyzer.

The tool described in this post may be helpful to other ab initio machine-architecture developers.  If any exist.  The rest of Loper will remain in my private code repository, because it is not a collaborative project. Meet Stierlitz [1], perhaps the world’s strangest bus analyzer.  For basic use, it requires no software at all on […]

Posted in: Cold Air, FPGA, Hardware, Lisp, LoperOS, Progress, Reversing by Stanislav 2 Comments

Laboratory Robotics with Common Lisp

To stave off the never-ending questions — variations on the theme of “Where is Loper? Why the wait?” I would like to confess the following: I live a double life! I spend my days… working! For money!  So that I can eat. Here is my current commercial project. It is a laboratory robotics controller, based […]

Posted in: Cold Air, Lisp, LoperOS, NonLoper by Stanislav 7 Comments

Roman Lisp

You’ve met the Steam Lisp.  Now meet vitrium flexile, the Roman Lisp: “… there was an artificer once who made a glass goblet that would not break. So he was admitted to Caesar’s presence to offer him his invention; then, on receiving the cup back from Caesar’s hands, he dashed it down on the floor. […]

RIP jmc.

A giant fell. And circus pyramids of idiot midgets make cargo-cult noises. Sniveling trendoids, have you run out of crocodile tears yet? And his “Maxwell’s Equations of Software”?  How many have even heard of, much less understood them? They will be remembered long after the last idiot shiny toy maker has closed up shop. They […]

Posted in: Lisp, Mathematics, NonLoper, ShouldersGiants by Stanislav 13 Comments

The Simplest Lisp Machine

Looking for an inexpensive, robust Lisp system?  Consider this one: Tried it?  Not satisfied? Well, don’t blame me: it meets all of the basic qualifications for “Lispiness”: Does not hide the abstract syntax tree from programmers. Does not force a non-modifiable syntax on programmers. Does not impose an arbitrary order of sub-expression evaluation on programmers. […]

Posted in: Hot Air, Lisp by Stanislav 6 Comments

Of Lisp Macros and Washing Machines

Vladimir Sedach explains the purpose of the Lisp macro and comments on some of the reasons for its absence from “modern” programming systems: “I used to like arguing over the Internet about this subject. There are many good technical and management/organizational arguments you can make for and against macros. What I’ve come to realize is […]

Steam Lisp

How many of your waking hours have you wasted in babysitting machine processes which ought to be entirely hidden and automatic?  In the use of “job-creating” technologies? Next time you find yourself doing so, consider this: “Improvements come in many ways, sometimes after much thought and after many experimental failures. Sometimes they flash upon clever […]

Of Weighty Matters, or Thumbs Still Down for Clojure.

Ah, Clojure. The nice, clean replacement for Common Lisp — as some would have you believe. I haven’t forgotten about you. Clojure is a nice, clean replacement for Common Lisp only if thumbs are nice, clean replacements for cars. But wait, we’re dealing with something more than a mere lightweight hitchhiker on the JVM: “…Clojure’s […]

Posted in: Distractions, Lisp, ModestProposal, NonLoper by Stanislav 24 Comments