Have you attempted to use the working copy of RISC OS on the other two RPi B+'s that are not working otherwise?heuristicjohn wrote:I have three RPi B+ cards, presumably functionally identical, and I am trying to run RISCOS (v RD14, card supplied by RISCOS OPEN) on each one. I have no problem with the oldest RPi, but on power up the other two (purchased this year) give me the 8 green led flashes which signify 'card not recognised' . All three RPI cards will run Raspbian (from a different SD card obviously) , so are in working condition. Connections, power supply etc are the same in each case. On board voltage is correct.
This would seem to imply a subtle difference between the earlier card and the two later ones, though I find this very hard to believe.
The cards are identified as follows:
9UKCE MC1 7-2 V-0F3 1422 (label 26/06) : Samsung is marking on largest chip (CPU ?)
9UKCE MC1 4-5 V-0F3 1436 (label 13/07) : Elpida ditto
9UKCE MC1 5-6 V-0F3 1438 (label 06/09) : Elpida ditto
Has anyone else met this problem ?
No it doesn't!heuristicjohn wrote:... I have an RPi 2B. This has Broadcom memory.
Magic?This card runs the RC14 version of RISCOS with no problems. So how does the RISCOS SD card know which RPi card version it's on ? Baffling.
RISC OS does not know. I missunderstood what you said the problem was, sorry.heuristicjohn wrote:Quick update: just remembered I have an RPi 2B (embedded in PiDP8). This has Broadcom memory. This card runs the RC14 version of RISCOS with no problems. So how does the RISCOS SD card know which RPi card version it's on ? Baffling.
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