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11 mentions on Hacker News by 9 people: 1 story, 10 comments · first 2022-03-24 · latest 2024-08-05

Mentions per year 11 mentions · busiest year 2022 (8)
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  1. …a collection of optimized software FP routines baked into the chips ROM. You can see the code here: https://github.com/raspberrypi/pico-bootrom/blob/master/boot...
    comment by jsheard · 2024-08-05 · in Romram: Using QSPI RAM with RP2040's SSI in read-write mode
  2. There's another really subtle easter egg hidden in bootrom_rt0.S: https://github.com/raspberrypi/pico-bootrom/blob/ef22cd8ede5... And the explanation: https://news.ycombinator.com/item?id=30970274
    comment by duskwuff · 2024-03-18 · in RP2040 Boot Sequence
  3. Some fun easter eggs in the bootrom. It seems like kilograham is a Doors fan: https://github.com/raspberrypi/pico-bootrom/blob/ef22cd8ede5...
    comment by vha3 · 2024-03-18 · in RP2040 Boot Sequence
  4. Crosslinking the two posts: https://github.com/raspberrypi/pico-bootrom/issues/17
    comment by josuah · 2022-04-09 · in Raspberry Pi Pico: What is this code doing in its boot ROM, line 442?
  5. Direct link to the line in question: https://github.com/raspberrypi/pico-bootrom/blob/ef22cd8ede5... (@dang, worth updating the link?)
    comment by rahimiali · 2022-04-09 · in Raspberry Pi Pico: What is this code doing in its boot ROM, line 442?
  6. The 'zphd' label seems to appear nowhere else in the boot ROM code, though: https://github.com/raspberrypi/pico-bootrom/search?q=zphd
    comment by nynyny7 · 2022-04-09 · in Raspberry Pi Pico: What is this code doing in its boot ROM, line 442?
  7. Interestingly, it was not present in the initial release. It was added here: https://github.com/raspberrypi/pico-bootrom/commit/ad55537bf...
    comment by Retr0id · 2022-04-09 · in Raspberry Pi Pico: What is this code doing in its boot ROM, line 442?
  8. …it and it bounces you somewhere else. In this case, the use is documented where it's implemented: https://github.com/raspberrypi/pico-bootrom/blob/master/boot... . It's a custom wrapper to call ROM functions. When the ROM function returns,…
    comment by bri3d · 2022-04-09 · in Raspberry Pi Pico: What is this code doing in its boot ROM, line 442?
  9. Lines 442-445, but apparently line numbers are stripped from GitHub URLs posted to HN: https://github.com/raspberrypi/pico-bootrom/blob/ef22cd8ede5...
    comment by nynyny7 · 2022-04-09 · in Raspberry Pi Pico: What is this code doing in its boot ROM, line 442?
  10. ▲ 217
    Raspberry Pi Pico: What is this code doing in its boot ROM, line 442?
    story by nynyny7 · 2022-04-09 · 73 comments
  11. …bootloader is only different in that it sits in ROM. For example, RP2040 ROM bootloader is here https://github.com/raspberrypi/pico-bootrom
    comment by mmoskal · 2022-03-24 · in Another Vulnerability in the LPC55S69 ROM