Boot up logo's are logos or animations shown on boot of IronOS
These are programmed into the device just like the normal firmware. They can be (re)programmed as many times as desired, after flashing the normal firmware.
Data storage format
The data is stored into the second last page of flash. This gives 1024 bytes of space for the entire payload of bootup-logo-data.
The first byte is marked purely to indicate that the page is programmed and which revision of the boot-logo-logic it is.
The next byte indicates the frame timing in milliseconds, or 0 to indicate: Only show the first frame for the whole bootloader duration (still image mode).
After the OLED buffer is cleared to black, every frame is encoded as either:
Full frame updates
[0xFF][Full framebuffer of data]
Delta frame update
[count of updates][[index,data][index,data][index,data][index,data]]
Where index is byte location into screen buffer and data is the new byte to plonk down there. This just overwrites individual bytes in the output buffer.
Logos preview
Static logos
| Logo | Filename | Note |
|---|---|---|
 |
ad_maiora.png | English: "Towards greater things" |
 |
arcade_galaga.png | |
 |
arcade_pac_man.png | |
 |
bender.png | |
 |
doggie_bone.png | |
 |
f1.png | |
 |
halo_master_chief_helmet.png | |
 |
horror_vacui_IronOS.png | |
 |
IronOS.png | |
 |
Logo1b.png | |
 |
lot_of_tin_is_too_few_tin_IT.png | English: "A lot of tin is too few tin" |
 |
majorTom.png | |
 |
open_sw_hw_IronOS_logos.png | |
 |
Pinecil.png | |
 |
science.png | |
 |
skulls.png | |
 |
TS100.png | |
 |
TS80.png | |
 |
TS80P.png | |
 |
wh_40k.png | |
 |
wwii_kilroy.png |
Animated logos
| Logo * | Filename | Note |
|---|---|---|
 |
CRT_horror_vacui.gif | |
 |
IronOS.gif | |
 |
terminal.gif |
* Click the individual logo to see its animation, if you missed it here.