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Machiavellian said: Since that black line connects directly with the ESRAM, would that not mean that the ESRAM is probably used as a cache for the GPU and thus the CPU can read its contents making the system HUMA capable. |
Every APU can do that and it is not hUMA... hUMA means you don't need to refresh the CPU-cache to see how the GPU mem is being used... in any APU I can access the GPU memory but I need to refresh my cache table before that.
That's what mean coehent... you don't need to update your cache table to see the latest updates made by GPU (or vice-versa).
So no... the CPU can access the eSRAM without hUMA... what will make it hUMA is if the CPU-cache table coherent with GPU-cache table for eSRAM... if you need to do a refresh everythime you will access the eSRAM then it is not hUMA... in fact it is NUMA.
