Super game module lower 8k ram error?

[Adamj91]

Hey guys, not sure why theres a 8k ram error. Im using a super game module with the sd atarimax cart. I feel like its stopping me from playing certain games like kings valley

[Pixelboy]

I'm not 100% sure, but I think the "Lower 8K RAM error" indicates that the tester was unable to put the SGM in "full 32K RAM" mode. I don't know what would cause this though.

 

[Adamj91]

Yeah im not sure either. I saw somewhere that turning off the quick bios option will fix it but I dont see where that is an option in the atarimax cart 

[+llabnip]

Having implemented the SGM in my emulator last year, enabling the lower 8K will swap out the existing BIOS and map in the 8K of RAM in its place. By default, that 8K region is the BIOS and it must be enabled for RAM programmatically.

 

Basically a program writes to Port 60h to tell the system if we should switch out the 8K BIOS for 8K of more RAM (brining the SGM up to 32K total).

From this post, it does appear that the quick bios must be disabled for this Port 60h to work correctly.

 

 

[Adamj91]

I've been trying to figure out how to disable the quick bios from the settings somehow, I didnt see it in the atarimax menu. =/

[marauder666]

Press * at the list if games,  option should be at bottom.  * to exit.

[Adamj91]

In at the options menu, not sure if Im seeing an option for disabling the fast bios? :/

[marauder666]

Yours is newer than mine in all departments, apart from the menu.  I bought mine around a year ago, maybe a little longer.

 

I menu on the SD card is cvsdos.sto, which is much older than mine. 

Have a look in the firmware backup folder on your SD card, should be cvsdos.sto for your firmware version.

I'd copy the existing file somewhere safe before overwriting it with the newer one, just to be safe.

I've never done this before, so it's at your risk!

 

 

Edited July 30 by marauder666