Haven't posted in a while. Well figured out where I had a major slowdown. The qtouch routine to read buttons was slowing down USB comms. Rewrote the routine and gained some speed - alot of speed. Average throughput went from 4MB per second to 13MB per second. Running a benchmark program the cdrom's raw i/o went from around 20x cdrom to 85x cdrom speed. Booted Ubuntu Live in about 40 seconds flat!
Remember even though the raw i/o is 85x speed there is no mechanical overhead - no moving parts so seek speed is way faster than a normal cdrom drive. Equivelant speed probably ends up well over 100x cdrom speed.
Saturday, April 17, 2010
Thursday, April 1, 2010
Emulation on new EVK1104 board going good
Have almost all the code done on the X2 version of the emulator. Once I'm done I'll start working on the hardware end - Will be developing an AVR32 devel board of my own, Without all the extra hardware not needed. So it will be cheaper to sell these things. Besides It's next to impossible to find avr32 devel boards for under $100.00 - I figure the board itself will sell for anywhere between $40 and $65. Where else can you get a USB High-Speed AVR32 devel board for that price! Once the board is done, then I'll add the qtouch and video interfaces. I can see the light at the end of the tunnel.... It's been a long ride so far so good.
Friday, March 26, 2010
Emulation running on evk1104
Well got the emulation running a few minuts ago. the code i'm using for the sd card is not the fastest about 4mb per second. I have played around with faster, but already started down the path with this. but it's booting cd's faster that the fastest internal cdrom I have played with. good sign so far. will post back once tested further......
Monday, March 8, 2010
I'm still here
Figured I'd post something, it's been a while.
Still working on the EVK1104 board, if anyone tells you it's easy to switch from AVR 8bit to AVR32 bit processors they are lying!
I'm finaly getting the hang of the internals of the processor. It takes alot of read of spec sheets and reading the framework code to get a grasp of things.
The current dev is going to use the SD card slot for MassStorage, the LCD for display and the QTouch buttons for input. So far I have the MassStorage portion of the CD Emulator and some menu commands working. Within a couple of days I'll have the CD emulation code working.
Still working on the EVK1104 board, if anyone tells you it's easy to switch from AVR 8bit to AVR32 bit processors they are lying!
I'm finaly getting the hang of the internals of the processor. It takes alot of read of spec sheets and reading the framework code to get a grasp of things.
The current dev is going to use the SD card slot for MassStorage, the LCD for display and the QTouch buttons for input. So far I have the MassStorage portion of the CD Emulator and some menu commands working. Within a couple of days I'll have the CD emulation code working.
Tuesday, February 23, 2010
Got the new EVK1104 dev board
Received the new board on sunday, awsome device - Full graphics LCD, sd/mmc/ce-ata interfaces and tones of ram. oh yeah - high-speed usb interface and on-the-go usb hosting support. The qtouch buttons are kinda cool too.
But unfortunatly the DFU bootloader is corrupted - so I have to use a jtag programmer to get the bootloader reloaded. From what I read it's a common problem. BUT I don't have a jtag progammer! Well ordered that yesterday. (I feel like a kid at christmas that got that awsome new bike, only to realize that I cannot ride it till sommer!)
PS: this board is overkill for this project, but once I have it running on this platform and find out what I don't need i'll make my own boards for a fraction of the price.
But unfortunatly the DFU bootloader is corrupted - so I have to use a jtag programmer to get the bootloader reloaded. From what I read it's a common problem. BUT I don't have a jtag progammer! Well ordered that yesterday. (I feel like a kid at christmas that got that awsome new bike, only to realize that I cannot ride it till sommer!)
PS: this board is overkill for this project, but once I have it running on this platform and find out what I don't need i'll make my own boards for a fraction of the price.
Thursday, February 18, 2010
EVK1104 AVR32
Well I pulled the trigger tonight. I ordered an EVK1104 dev board. It's pricy but will give me alot more growth.
Alot more memory and program space.
Plus as an added bonus - High-Speed USB 480mb/s !! Can you say fast cd rom emulation!
The graphic display is an added bonus.
SD memory card - maybe I could do something with that.
CE-ATA interface - interesting, That would use alot less data lines than the HDD IDE interface.
I'll post info once I get this board and do some testing. It will take a little while to get fully operational. Code porting from the 8 bit will take some work, i'll have to check out Dean's site and see if LUFA is ported to avr32 - I though I cought somewhere where someone was working on it.
Alot more memory and program space.
Plus as an added bonus - High-Speed USB 480mb/s !! Can you say fast cd rom emulation!
The graphic display is an added bonus.
SD memory card - maybe I could do something with that.
CE-ATA interface - interesting, That would use alot less data lines than the HDD IDE interface.
I'll post info once I get this board and do some testing. It will take a little while to get fully operational. Code porting from the 8 bit will take some work, i'll have to check out Dean's site and see if LUFA is ported to avr32 - I though I cought somewhere where someone was working on it.
Tuesday, February 16, 2010
Website up and running
Well started a web site - I am not a web site designer! The site sucks right now but it will get better.
http://renosite.com/
http://renosite.com/
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