I’ve recently been doing projects such as porting CP/M-86 to C, and the porting MP/M to C. I decided to take a look at UnixV0 and TOPS-10 the same way and quickly discovered that I would like to have a compiler that consumes C and emits… whatever back-end instruction set I want. So I decided,…
Following on the work to port CP/M to C, I decided to take on MP/M from 1979, since it has multi-user capability. With Claude’s help this was a 2-stage process: The net result is C code that compiles to 32-bit real mode MP/M. You can see it in QEMU here: qemu-system-i386 -drive file=build/mpm86c.img,format=raw,if=floppy -boot a…
Part 1 here. Well, i discovered that none of the CP/M commands that are .com files were present. So we now have: All of the .COM’s were “back-ported” from the original assembler code to C so that they can now be compiled for different platforms. BASICBAS.COM, BASICINT.COM and BASIC.COM are the original Basic-e from 1976,…
I’ve been interested in CP/M for a while. The source code for CP/M from “way back in the time tunnel” is available at the CHM and multiple other places. The challenge however was that CP/M source is in assembler code for 8080 and z80. I wanted to run it on i386 hardware. So, with the…
A typical Minecraft world, which is made of voxels, is 128 blocks high and 2048 blocks wide and deep, for a total volume of 536,870,912 blocks. We’ll call it 500 million. So now that we have LLM’s like Claude, we can get some advice on how to build bigger worlds, which I did. I asked…
We have an Arctic Spa at our house which we enjoy. Recently, an OpenAPI spec has been published for it, so I decided to write a Java wrapper so I could control the spa myself, and monitor temperature with Prometheus and Grafana. The resulting code is here. The wrapper class “com.khubla.kspa.Spa” takes care of all…
My preferred server OS is FreeBSD. Each time I install it, I have to go through numerous steps to secure it. So, to avoid that effort, and to make sure I get it right each time, I’ve created an Ansible playbook to automate the entire process. You can learn about it here. Some of the…
When building database ORM code, I prefer to use ebean, and I prefer to use DAO‘s. Since DAO’s are simple to make generic, I have a Generic DAO I use for all projects. I’ve finally decided to open-source my DAO code, and you can find it here https://github.com/teverett/ebean-dao.
There are new release builds for some of the more widely used khubla.com libraries, resulting for patching for the log4j vulnerability. They are: ParadoxReader <groupId>com.khubla.pdxreader</groupId><artifactId>pdxreader</artifactId><version>1.6</version><packaging>jar</packaging> OLMReader <groupId>com.khubla.olmreader</groupId><artifactId>olmreader</artifactId><version>1.9.0</version><packaging>jar</packaging> JVMBasic kPascal
I’ve recently been quite interested in Graph languages, not for Graph Databases, but for representing information, in code that is essentially “things” and “relationships”. For example, one perspective on Organizations is that they are simply representable as people, systems and the information that flows between them. Those three building blocks are, in theory, enough to…