José Miguel @omixann.me · 12/08/2026I have _many_ more, but I'm still pondering what to do with them all... 010
José Miguel @omixann.me · 12/08/2026Some takes of the eclipse from my little town in Extremadura, Spain :) 231
José Miguel @omixann.me · 17/06/2026I rarely brag about getting all achievements on games (partly because I don't care, partly because I can't, partly because I don't play that many games) but this one really felt rewarding. Play Rhythm Doctor. Great game in a simple & cute package. 130
José Miguel @omixann.me · 22/04/2026I've been told that real engineers solve problems by methodically applying theoretical knowledge, harnessing their math knowledge and carefully handling the subtleties of the real world in their calculations. Well whatever, I got HTML sliders and a simulated circuit :D 000
José Miguel @omixann.me · 09/06/2025Now this is true UNIX porn (on MAME because I'm not buying a SGI workstation lol) 140
José Miguel @omixann.me · 14/05/2025A mi que haya 4x más ancho de banda de memoria me gusta, 25 GB/s era sencillamente ridículo en los tiempos que corren. Detalle tonto que me hace gracia: la PS2 tiene casi *el doble* de ancho de banda que la Switch 110
José Miguel @omixann.me · 03/05/2025Quarter wave LUT is done, time to take a break and document it :) 020
José Miguel @omixann.me · 03/05/2025Another rather nice image... Of course, those artifacts shouldn't be there, but for the purposes of taking this picture I'm glad they are :D 010
José Miguel @omixann.me · 03/05/2025Got Phase Modulation synthesis working on my FPGA! I could play a very trippy audio, but instead I'm using the following FFT to mark this milestone. I have the pieces to also do PSG, playing PCM samples and mixing signals together, probably the 3 pillars of whatever audio HW I put into my project. 261
José Miguel @omixann.me · 11/04/2025Dreaming about the future... (thx @JensGustedt.digitalcourage.social.ap.brid.gy for gustedt.wordpress.com/2025/01/06/s...) 120
José Miguel @omixann.me · 09/04/2025Although IMO this is the peak storage format (the physical enclosure). Small enough for modern tastes, but big enough to remain a manipulable object (unlike those fiddly microSD cards we have now). Actually, the fact it's as wide and a bit larger than a thumb may be the reason why I feel like that 010
José Miguel @omixann.me · 09/04/2025Not the same style nor audience, but this is what tingles my brain the right way 120
José Miguel @omixann.me · 08/04/2025Made a few other ASCII comments. I'm not sure how useful they will really be, but they are sure a joy to make :D 031
José Miguel @omixann.me · 16/03/2025Cannot believe this guy is sitting at 27 followers here, so I feel obliged to spread the word: give @flipacholas.bsky.social a follow. His analysis have been a source of information, inspiration and motivation during my computer architecture journey. 110
José Miguel @omixann.me · 22/02/2025My pet project right now is making the perfect not-so-retro machine out of a Thinkpad W530. Thoughts so far? 130
José Miguel @omixann.me · 19/02/2025@macleouc.bsky.social conservas alguna copia de los ISOs de LinEx que se distribuyeron? He probado a buscar en archive.org pero solo encuentro la 2006 RC2 y otra que creo que es la 3.0. Me gustaría poder encontrar otras como la 3.0, 2004, 2010, 2011, etc Tengo varios MD5s pero casi ningún ISO... 100
José Miguel @omixann.me · 04/02/2025I'm silent here, but I keep working in the shadows. The most notable addition? PCM audio support. Turns out ΣΔ is super easy to code! Also: slightly increased performance & Fmax, mandatory M+U mode CSRs implemented, ecall/ebreak/interrupts... Also progressing through @pikuma.com's 3D course :) 081
José Miguel @omixann.me · 25/01/2025@tsoding.bsky.social looks like you're being presented as evidence to back up a proposal on page 2 of www.open-std.org/jtc1/sc22/wg... 210
José Miguel @omixann.me · 18/01/2025Maybe there's no need to go as far as I went here, but maybe just including 1 case before showing the current unmodified diagram would help guide people. 200
José Miguel @omixann.me · 27/12/2024Prettier than benchmarks :) Code taken from github.com/BrunoLevy/Ti... 030
José Miguel @omixann.me · 22/12/2024✅ Branch prediction! It uses a BTB (Branch Target Buffer) and 2-bit saturating counters. ⬅️ ❌ Left: mispredicted branch takes 5 cycles. ➡️ ✅ Right: predicted branch takes just 2 cycles. Now memset _flies_, reaching 300 MB/s (compared to the ridiculous 6 MB/s my old crappy design reached) 040
José Miguel @omixann.me · 16/12/2024Definitely RGB444 is noticeably hideous, but RGB555 is plenty enough and not _that_ far away from RGB666 or even RGB888. Judge by yourself: 120
José Miguel @omixann.me · 12/12/2024On a more positive note, I'm _almost_ there, with basic functionality almost covered already, being able to rasterize a tri in SW. It's missing neat stuff like a BTB or caches, but I'm very happy with the current design (IF/MEM FIFOs, parallel MEM/×/÷ units, partial forwarding, fairly high Fmax...) 131
José Miguel @omixann.me · 09/12/2024I recall @thephd.dev saying something along the lines of "we want to make C23 the standard C99 people switch to" and not giving it too much thought. Well, today I tried some ideas. All you see here is now possible, and it's _amazing_. What can I say? Well, thanks for bringing C to the 21st century 4425
José Miguel @omixann.me · 29/11/2024Hey! Coming again to say the same thing: doing "boring" grunt work to prepare for the exciting part. In the meantime, enjoy this image of 4 100 RV32IMC cores sharing access to the SDRAM and I/O buses. If things go well, the CPU part of the project will be done this weekend! :) :) :) :) 020
![A screenshot of some terminal output demonstrating C's upcoming defer feature using GCC extensions:
$ cat defer.h
#define __DEFER__(F, V) \
auto void F(int*); \
[[gnu::cleanup(F)]] int V; \
auto void F(int*)
#define defer __DEFER(__COUNTER__)
#define __DEFER(N) __DEFER_(N)
#define __DEFER_(N) __DEFER__(__DEFER_FUNCTION_ ## N, __DEFER_VARIABLE_ ## N)
$ cat main.c
#include <stdio.h>
#include "defer.h"
void
foo(void)
{
defer { printf("Deferred!\n"); };
printf("Normal!\n");
}
int
main(void)
{
foo();
return 0;
}
$ ./main
Normal!
Deferred!
$](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:l4sh3guti7k2mzcn2gzox2vy/bafkreihqerwbubbwnr7jd2govu6jf4s7xccywba6xyy325w5crivtow7am)
