Paying a monthly subscription just to emulate a 1970s green-screen terminal is absurd. So I built my own. Meet X3270: A free, native macOS TN3270/TN3270E emulator.

Built from scratch in pure C++ and Cocoa. No Java. No X11. No Electron bloat. It has implicit TLS 1.2+ via OpenSSL and full ISPF Query Reply support.

Free and open-source forever. Read the architecture breakdown on my blog: https://www.dockerr.blog/blog/modern-free-TN3270-terminal-client-for-mac-free

#cpp #opensource #mainframe #zOS #macOS #COBOL #FOSS #softwareengineering

One assembler to rule them all.

I'm building UA. A language that reads like high-level code but talks directly to the registers. The standalone asm compiler do PE, ELF, or raw binaries without any ext. linkers.

Full manifesto coming soon in the "BOOM".

#lowlevel #coding #assembly #c99

Running out of DSP slices on your FPGA? I’ve been experimenting with Low-Rank Approximations for 3x3 Convolutions to solve exactly that.

My latest project replaces standard matrix multiplications with learned, hardware-friendly bit-shifts.
The result:
• 33% reduction in DSP usage (2 Muls instead of 3)
• <1% error (SSIM > 0.99)
• Ideal for SWaP-C constrained edge perception.

https://www.dockerr.blog/blog/lowrank-hardware-approximation

#FPGA #VHDL #EmbeddedSystems #ComputerVision #EdgeAI #OpenScience #Engineering

Released V1.1.O of GMlib. IO Swapping has now encryption. Plus improvements of memory compression on RAM.
https://github.com/el-dockerr/ghostmem

#cpp #softRAM #development

They said "just download more RAM" was a meme. I took it personally. 👻💾

Introducing GhostMem: A user-space C++ library that transparently intercepts virtual memory accesses. It traps page faults and compresses cold data on-the-fly using LZ4.

No kernel modules. No admin rights. Just more RAM.

https://github.com/el-dockerr/ghostmem

#cpp #lowlevel #performance #systemsengineering #lz4 #linux #windowsdev

Can it run #doom?
One of the most impressive thing ever!

https://youtu.be/ATLCWeUS3Zs?si=3Z01DPqYNAxgsV9W
#C64 #DOOM #raycasting