I'm Zane, from NZ. I like me a bevvy and a splash of assembler. I usually dabble with computers several years older than me and occasionally I produce something quite useful.
Everything is built from primary sources, original manuals, and the occasional declassified document.
The full list of projects, and the write ups explaining them, lives at zanehambly.com. This page is the short version.
I like to be as transparent as possible in how I work. If you'd like to see my notes, assembly dumps and a mishmash of human and generated tests feel free to visit bits and bobs.
Everything I've sent upstream is in one search.
- OCaml - Native code compiler backend. Atomics across all five architectures, square root, fused multiply-add, rounding and bit counting as single instructions, and bulk operations on float arrays
- LLVM - X86 backend and MC layer, mostly the Intel syntax matcher and the encoder
- LFortran - Legacy F77 intrinsics and GPU offloading for
do concurrent - Solo5 - riscv64 support for the spt target
- z390 - Core contributor to the IBM mainframe assembler/emulator, including COBOL macros, VSAM enhancements, and NIST test suite work
Booth - GPU compiler. CUDA, HIP and Triton in, AMD, NVIDIA, Tenstorrent and plain CPUs out, so GPU code runs on machines with no GPU. Zero LLVM, binary is kath, after Kathleen Booth
Takahe - Digital synthesis tool. SystemVerilog, VHDL and ABEL-HDL down to gates on four open PDKs and the 74LS series, where area is counted in packages rather than micrometres
Voyager FDS - Emulator for the computer that's leaving the solar system, built from documentation tracked down at Wichita State University, since the machine itself is 24 billion kilometres away and cannot be consulted. Also synthesised to SKY130 in 58 cells
Moa - Monte Carlo neutron transport. I'm not an actual nuclear scientist, I just read the papers and there was enough example code lying around. Validated on the Godiva, Jezebel and Flattop benchmarks anyway
Halmat - A reconstructed spec of the intermediate language every line of Shuttle flight software passed through. Nobody documented it, so the grammar is a hypothesis and Menhir is the interrogator
Reeve - Slatec and some LAPACK for good measure in OCaml ported from the original Fortran. Validated against it too because my brain doesn't work when a bessel function looks at me funny
Based in New Zealand, GMT+12/13
My profile picture for the next wee while is not me, I'm not nearly as handsome, it's Barry, 63. knowyourmeme.com/memes/barry-63
Some images from the files