TI99 4a hanging

[DFL1973]

Some really strange is happening for me. Almost all the time the core doesn't boot, hanging in a cyan screen and with a continous sound. Even reseting the core or reloading from the menu, continues the same problem.

The weird part is: after an off-on power cycle, sometimes (like 10% of time) it boots normal, I can play the games and still continues to work even after a reset, until another power cycle. (that it could lead to that cyan screen with countinous sound).

[gyurco]

Looks like a ROM loading issue. Colecovision works perfectly?

[DFL1973]

Initial "ti994a.ROM"? I'm not sure, because I returned to Mist menu and try to re-load the core many times (I suppose the ROM is sent again each time). As I saw, if it doesn't work the first time, I need a power down to try again. Just returning to menu and reloading is not working. The fun fact is, If it loads, I can return to the Mist Menu and load again and it will work... It´s really weird.

Yes, Colecovision works without any problem with all the games.

[DFL1973]

Just an update, the new version still doesn't solve my issue. Almost all the time it turns on with a cyan screen and continuous beep but sometimes (rarely) it boots and works. No problem with the Colecovision or any other core.

[gyurco]

Strange, now it has a different SDRAM controller.
Can you try it with an other SD Card?
If you load a cartridge via OSD when it's broken, is it still broken?

[DFL1973]

I notice the new SDRAM module, this is why I take a new shot on this.

No changes with another SD card. (Both are regular SD, 1gb and 2gb, no SDHC)

When I try to load a cartridge when hanged, still hanged, no change, even after I press reset button