MobileRead Forums - View Single Post - PRS-500 Compiling for the Reader

alex_d · 06-07-2007, 05:31 AM

Ok, I'm up and running and got framebuffer access working.

Having done some benchmarks, I can continuously refresh at 2bit without black/white transitions in under 0.7s per screen. Not too bad. I think with prefetching the next page into the screen I can get latency down even more (but i'm not sure how to measure this empirically).

However, I can't for the life of me get 1b mode working. I can switch into it, but the memory layout is bizarre and I can't display anything. This sucks, because I was really hoping for some killer refresh rates using 1b mode. If no one here knows anything about it, maybe i'll email the guy who wrote simplereader.

also, the auto-refresh doesn't seem to work. sony probably disabled it. that's too bad, but it's ok. I can just do the refreshes manually.

ok, next step is to render some text and list the files and folders on the sd card.

06-07-2007, 05:31 AM	#13
alex_d Addict Posts: 303 Karma: 187 Join Date: Dec 2006 Device: Sony Reader	Ok, I'm up and running and got framebuffer access working. Having done some benchmarks, I can continuously refresh at 2bit without black/white transitions in under 0.7s per screen. Not too bad. I think with prefetching the next page into the screen I can get latency down even more (but i'm not sure how to measure this empirically). However, I can't for the life of me get 1b mode working. I can switch into it, but the memory layout is bizarre and I can't display anything. This sucks, because I was really hoping for some killer refresh rates using 1b mode. If no one here knows anything about it, maybe i'll email the guy who wrote simplereader. also, the auto-refresh doesn't seem to work. sony probably disabled it. that's too bad, but it's ok. I can just do the refreshes manually. ok, next step is to render some text and list the files and folders on the sd card. Last edited by alex_d; 06-07-2007 at 06:16 AM.