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Hello Mark,
Am 07.09.2020 um 18:10 schrieb Mark Waterbury <mark.s.waterbury@xxxxxxxxxxxxx>:
Cobra.
Thanks!
I found a 40 MHz, and a 99.3 MHz crystal oscillator near the CPU. Usually, the frequency is halved and then used as clock. This means, the CPU most likely runs with 49.65 MHz, since the Wikipedia article you mentioned states "between 50 and 77 Mhz" for the Cobra.
Interestingly, the board also hosts a PowerPC 603e (EMPPC603eFE-83) from which I guess is the IOP, most likely running underclocked (if synchronous with the main CPU), because no heat sink attached by default.
:wq! PoC
PGP-Key: DDD3 4ABF 6413 38DE -
https://www.pocnet.net/poc-key.asc
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