Activity

From 02/15/2018 to 03/16/2018

FO 08:56 PM Bug #63 (New): Svideo issues in v20 on board v1: I am getting a green basic screen sometimes. Seems to be a bad state somewhere since its resolved when I switch to NTSC and back. I suspect something related to the antic highres changes. Easy to reproduce so I can look what is wrong wit... foft

FO 09:55 PM v20: Now that the flash chip works I've been doing a few long overdue firmware improvements.
So v20 is out with:
* Devices and settings split. Settings is on F11, Devices on F12.
* Hotkeys to go to file selectors quickly on devices (1,2,... foft
FO 09:41 PM Feature #53 (Closed): Add version number to settings: Added board version, date and core version (need to update VERSION file manually on build) foft
FO 09:40 PM Feature #58 (Closed): Maybe consider moving CART selection closer to top in F12 menu ?: foft
FO 08:46 PM Feature #58: Maybe consider moving CART selection closer to top in F12 menu ?: Was getting tempted by a bigger rework, including settings in json: https://github.com/quartzjer/js0n
More work than my interest on this today! foft

FO 09:56 PM Feature #58 (In Progress): Maybe consider moving CART selection closer to top in F12 menu ?: On second thoughts, one more feature to add here.
Updating of roms on the flash by loading/then save all. foft
FO 09:54 PM Feature #58 (Closed): Maybe consider moving CART selection closer to top in F12 menu ?: foft
FO 09:39 PM Feature #58: Maybe consider moving CART selection closer to top in F12 menu ?: Added support for filtering in the file selector. Also added hotkeys to the device menu (1-4 and C). foft

FO 10:05 PM Feature #58: Maybe consider moving CART selection closer to top in F12 menu ?: M25P (54MHz max), N25Q (108MHz max) I think. Thinking I should really move away from the M25P (or equiv) for v2 fix, its pretty bad. Large sectors and slow. foft
FO 10:03 PM Feature #58: Maybe consider moving CART selection closer to top in F12 menu ?: Well, I can increase the clock speed of the spi communication. I'm only at 25MHz and think I can go to 100MHz. But not sure how much time is spent in spi overhead and how much time waiting. foft
FO 09:54 PM Feature #58: Maybe consider moving CART selection closer to top in F12 menu ?: Doh. Writing in 256 byte chunks increasing destination address each data, but not increasing data pointer! Oops! So working now, but takes 7 seconds to save (v1, v2 not tested). Not much I can do about that on v2 (256KB sector size) but ... foft
FO 09:12 PM Feature #58: Maybe consider moving CART selection closer to top in F12 menu ?: Loading of profiles is working (no hotkeys yet).
Saving is failing... I have to read 256KB of flash to sdram then rewrite with a diff, guess that is failing somewhere. foft

FO 10:17 PM Feature #58 (In Progress): Maybe consider moving CART selection closer to top in F12 menu ?: Following the flash support, decided to split the menu into two parts:
i) Device emulation (disk + cart + usb stuff)
ii) Settings (video settings + rom + ram size etc)
+ removing the quick select menu.
The device menu is thus much ... foft
FO 04:44 PM Feature #37 (Closed): SD card insertion support: foft

FO 05:22 PM v19: Continuing the theme...
I checked that I can read/write from the spi flash chip. Had to use the altera serial flash loader since the pins are not directly exposed. Turned out I could use the existing spi master I'm using for the SD ca... foft
FO 05:19 PM Feature #62 (Closed): Store settings in spi flash: foft
FO 05:19 PM Feature #62: Store settings in spi flash: Tested as v1, working fine. Though I noticed that the i2c code hangs v1 (devices do not exist, I thought it'd be harmless...). Modified the platform register. foft
FO 12:32 PM Feature #62: Store settings in spi flash: Wondering about whether to put a file system on the flash chip. Such as spiffs, which is aimed at flash chips and low memory.
https://github.com/pellepl/spiffs/
Probably overkill.
foft

SA 10:12 PM Feature #62: Store settings in spi flash: sadosp wrote:
> foft wrote:
> ...
|
/ \
sadosp
SA 10:12 PM Feature #62: Store settings in spi flash: foft wrote:
> Saving working too:)
\o/
sadosp
FO 09:37 PM Feature #62: Store settings in spi flash: Saving working too:) foft
FO 09:10 PM Feature #62: Store settings in spi flash: Step 1 done...
I add the settings to a jic file at a specified address.
Then I made the firmware load this if the 'settings' file is not found on the SD card.
Next step, saving!
foft

FO 10:07 PM Feature #62: Store settings in spi flash: Next step...
Add default settings to the jic. Then I can try reading/writing it. To write apparently I need to erase a page (to set to all 0xff), then write a page (to set some bits low). Reading looks trivial, though perhaps I have dif... foft
FO 10:01 PM Feature #62: Store settings in spi flash: sadosp wrote:
> foft wrote:
> ...
Nah, just means I messed something up before which the SD card didn't care about (surprisingly).
foft
FO 10:00 PM Feature #62: Store settings in spi flash: Yep, that was it. I can read and display the flash device id now.
The paves the way for saving settings, also it makes it fairly simple to load and flash a core from the SD card. That is for later... foft
SA 09:42 PM Feature #62: Store settings in spi flash: foft wrote:
> I thought about it and currently _believe_ the problem is that cs_n is raised in between bytes (rather than at the end of a command sequence). I think I'm doing this without problem on the SD card, but for the flash it doe... sadosp
FO 06:55 PM Feature #62: Store settings in spi flash: I thought about it and currently _believe_ the problem is that cs_n is raised in between bytes (rather than at the end of a command sequence). I think I'm doing this without problem on the SD card, but for the flash it doesn't work. foft

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