[GH-ISSUE #339] [NSpire CX] Simulator renders with 90-degree rotated framebuffer, odd behavior with dropped lines #155

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opened 2026-05-06 13:15:52 +02:00 by BreizhHardware · 0 comments

BreizhHardware commented

2026-05-06 13:15:52 +02:00

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Originally created by @Luminoso-256 on GitHub (Sep 12, 2023).
Original GitHub issue: https://github.com/UpsilonNumworks/Upsilon/issues/339

Describe the bug
When building the nspire simulator target with make PLATFORM=simulator TARGET=nspire and running it on an NSpire CX, the framebuffer appears incorrectly rotated and effectively unintelligible.

To Reproduce

Build
Transfer upsilon.tns to calculator
Run program and observe incorrect framebuffer

Expected behavior
The framebuffer appears correctly

Screenshots

Device (please complete the following information):

TI Nspire CX

I'd be happy to try some things and make an attempt at fixing the issue if anyone has a rough idea of where things are going wrong.

Originally created by @Luminoso-256 on GitHub (Sep 12, 2023). Original GitHub issue: https://github.com/UpsilonNumworks/Upsilon/issues/339 **Describe the bug** When building the nspire simulator target with `make PLATFORM=simulator TARGET=nspire` and running it on an NSpire CX, the framebuffer appears incorrectly rotated and effectively unintelligible. **To Reproduce** 1. Build 2. Transfer `upsilon.tns` to calculator 3. Run program and observe incorrect framebuffer **Expected behavior** The framebuffer appears correctly **Screenshots** ![IMG_1828](https://github.com/UpsilonNumworks/Upsilon/assets/63971285/2a79ef4b-3a43-464e-bbba-85abf4071b0d) ![IMG_1829](https://github.com/UpsilonNumworks/Upsilon/assets/63971285/ad436d4b-4256-4350-a320-d5748d15d134) **Device (please complete the following information):** - TI Nspire CX I'd be happy to try some things and make an attempt at fixing the issue if anyone has a rough idea of where things are going wrong.