<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>Hello,</div><div><br></div><div>I have a memory trouble with an old DOS OS from Digital Research called Concurrent DOS.</div><div>It worked fine till Qemu v0.11.1.<br>I use Qemu to make a legacy application run without any modification.<br><br>Starting with Qemu 0.12, my legacy application has not enough memory to run.<br>Actually it seems that the SeaBIOS doesn't use the same memory mapping than PC-BIOS used to, causing trouble to my application.<br><br>Is there any way to get SeaBIOS use (more or less) the same memory amount and memory mapping than the older PC-BIOS ?<br><br>I tried to recomplie SeaBIOS 1.7.0 with less options but the result is the same.<br>Here is my .config file
:<br><br>CONFIG_RELOCATE_INIT=y<br>CONFIG_ATA=y<br>CONFIG_FLOPPY=y<br>CONFIG_PS2PORT=y<br>CONFIG_SERIAL=y<br>CONFIG_LPT=y<br>CONFIG_DRIVES=y<br>CONFIG_OPTIONROMS=y<br>CONFIG_PMM=y<br>CONFIG_BOOT=y<br>CONFIG_KEYBOARD=y<br>CONFIG_KBD_CALL_INT15_4F=y<br>CONFIG_MOUSE=y<br>CONFIG_NO_VGABIOS=y<br>CONFIG_DEBUG_LEVEL=0<br><br>I also join two print screen of the same C-DOS utility. One with Qemu 1.0 and SeaBIOS 1.7.0 and the other with Qemu 0.10.0. The amount of memory is quite different between the versions.<br>If you want to try, get this floppy :<br>https://docs.google.com/open?id=0B7mz0vq6Rpb7Q0tYbmxMVzVqTms<br>and then type :<br>STOP<br><br>If you have any idea...<br><br><div>Thanks,</div><div><br></div>Alain<br></div></div></body></html>