Hey Lewpy and/or Pete

dpence · May 31st, 2001

Just a small tech question.

Does ePSXe, Psemupro, etc...send data to an emulated frame buffer, or do you guy's do all that through the DMA chain thingy?

Was thinking that if it was possible and the emulator sent the info to an emulated frame buffer it might speed up the transfer process by a lot (No pulling things out serially) you could just pull things out of the Frame buffer (Chunks at a time) do the conversions and display it

anyway's just a thought, it's probably not feasible, but hey you never know without asking

**Lewpy** · May 31st, 2001

Literally all framebuffer data is read and written in chunks. Only a very limited amount actually comes down in the DMAChain itself. Some data is transfered via register reads/writes, but only when the transfer is small I think.
I guess if the plugin doesn't export the routines needed for chunk reading/writing then everything would be done via the registers, but all current GPU plugins do (I haven't done an exhaustive check of them though).

May 31st, 2001	#1 (permalink)
dpence Registered User Join Date: Apr 2001 Location: USA Posts: 1,119	Hey Lewpy and/or Pete Just a small tech question. Does ePSXe, Psemupro, etc...send data to an emulated frame buffer, or do you guy's do all that through the DMA chain thingy? Was thinking that if it was possible and the emulator sent the info to an emulated frame buffer it might speed up the transfer process by a lot (No pulling things out serially) you could just pull things out of the Frame buffer (Chunks at a time) do the conversions and display it anyway's just a thought, it's probably not feasible, but hey you never know without asking

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May 31st, 2001	#2 (permalink)
Lewpy Emu author Join Date: Apr 2001 Location: Southern England Posts: 519	Literally all framebuffer data is read and written in chunks. Only a very limited amount actually comes down in the DMAChain itself. Some data is transfered via register reads/writes, but only when the transfer is small I think. I guess if the plugin doesn't export the routines needed for chunk reading/writing then everything would be done via the registers, but all current GPU plugins do (I haven't done an exhaustive check of them though).