Run Pebble OS in Browser via WASM(ericmigi.github.io)
76 points bygoranmoomin5 hours ago |7 comments
ezulabs32 minutes ago
Can already see a nice web based AI app builder on the way, also can be used to quickly try apps before pushing to the device as interactive app store.

Please watch out some qemu targets for Cortex m0 or m3, increasing ram from linker out of supported ranges will cause random crashes. Would love to contribute if you are looking for people to crash some issues.

Awesome effort btw.

mischief62 hours ago
08:46:37.125 [err] [fps] 4.0 (12 frames in 3.0s) 08:46:40.225 [err] [fps] 1.0 (3 frames in 3.1s) 08:46:41.224 FIRM | * ASSERTION FAILED: ASSERTN 08:46:41.443 [err] DEBUG post-reset: halted=0 stopped=1 R13=0x20002170 R15=0x080001b4 thumb=1 08:46:42.123 [err] clktree_recalc_output_freq: Clock PCLK1 output frequency (32000000 Hz) exceeds max frequency (30000000 Hz).

found an assertion just by clicking up/down. doesn't seem too stable.

cpfleming2 hours ago
Yeah that happens when trying to go up into the timeline.
donohoe1 hour ago
Any way to load a local watch-face? Am hoping there is and I didn't see it. This would be very helpful for testing.
mmmlinux2 hours ago
Should I be getting more than .2 FPS?
davsti42 hours ago
I'm not even getting that - its stuck at: 10:26:18.027 Downloaded SPI flash: 16777216 bytes 10:26:18.027 [config] icount: off 10:26:18.028 [status] Loading QEMU WASM module (17MB)...
KetoManx644 hours ago
I'm blow away at what Devs are able to do within a browser nowadays.
bossyTeacher3 hours ago
More that browsers have gotten sprouted downwards and obtained all sorts of low level access than older browsers didn't use to have. I believe this is partially why tools that were meant to just render markup have gotten so complex to build that a small team of devs is not enough to build a modern browser anymore. And by that I mean from scratch, not just piggybacking on Chromium or Gecko.
idle_zealot1 hour ago
> I believe this is partially why tools that were meant to just render markup have gotten so complex to build that a small team of devs is not enough to build a modern browser anymore.

Isn't it basically the opposite? The hard parts of the browser are layout, styling, and multimedia stuff that goes into rendering markup compliantly. Then there's the infinite sink of optimization work for a JS engine, the high-level scripting language for that markup. The low level access that something like this emulator use is comparatively easy; a WASM runtime and Canvas blitting pixels from some shared buffer.

Or am I mistaken that a WASM engine is much easier to build than a performant JS engine?

hemmert1 hour ago
Pretty impressive!
zb32 hours ago
Probably could be made faster by:

- using native exception handling

- getting rid of asyncify (but it would require JSPI)

See my experiments with TempleOS here: https://zb3.me/qemu-wasm-test/