Uploaded to ftp://ftp.devoresoftware.com/downloads/emm386/ are the files emmx221.zip, EMM386 version 2.21 memory manager, mostly executable files; and emms221.zip, source code files.
This release of EMM386 has a few fixes and changes, mostly directed to Qemu and FDAPM users, although those modifications are untested for that environment. It also fixes a problem with an advanced EMS handle name set function, EMS free page reporting when using the deprecated EMM= option, and internal corrections that may affect a few people. If you are still having problems with EMM386 2.20, version 2.21 is recommended. HIMEM is unchanged. Once more unto the breach... EMS function 53h, subfunction 1, set name, was stuffing garbage in the system handle name instead. Didn't break anything (the SYSTEM handle name is arbitrarily chosen), but it didn't work either. As with the other advanced handle name functions recently fixed, this would probably affect just a few EMS 4.0-based programs, but it should work now. When using EMM=xxx option, the EMS routines were double-counting the previously allocated pages due to the tighter EMS/VCPI coupling change recently made. You could allocate what was reported as remaining, so the first allocation could pull the full amount of actual EMS pages, but any allocation following that double-counted, so it would only take half of what was really available. Anyway, although EMM=xxx is not recommended for general users, it should give a good EMS free page report now. The is-this-cpu-really-a-386-or-better-or-else-forget-it routine might actually work now that I've made Arkady's change. Untested. A couple of internal VCPI allocator routines weren't always getting the proper flag setting. Since the default conditions didn't trigger the error, it usually didn't make a difference, but it under some conditions (typically low memory or smaller than default-sized blocks, near as I can tell), it could fail to properly allocate all free memory available and return an out of memory condition on VCPI memory allocated. If you ran out of memory running a DOS-extended program and you don't think should have, this fix is for you. One of those weird errors, you don't know why it never come up before and if it ever happened in normal conditions. Me, I'm just glad it's gone, even if it never bit anybody. I eliminated some debug code that probably wasn't hurting anybody. It just wanted to live, but I killed it, because my blood runs thin and cold and the goddess of mercy has never walked beside me. And what all the Qemu and FDAPM people have been waiting for, EMM386 now keeps original flag values except carry flag (status code) on INT 13h, INT 40h, and (I added) VDS processing routines, per Japheth remarks on the code earlier. In other words, RETF 2 is dead, long live IRET. Don't know whether this fixes the problems with Qemu et al, but I'm hopeful. Unfortunately, the IRET code changes are completely untested here, other than to say they don't smoke my computer, and VPC 2004 is still happy. If you have had problems with Qemu, FDAPM, or VDS, please give it a try and let me know what happens. Hey, that goes for everybody else too. What? You need motivation and positive feedback? Okay, listen up. Everyone one reading this message is the coolest, smartest, most handsome, nicest, bestest person to ever walk, roll on, or crawl terra firma. And because you are the coolest, smartest, most handsome, nicest, bestest people to ever walk, roll on, or crawl terra firma, you're going to give me good feedback. Yes? Yes. Man, you are great. If someone knows an easy way to get Qemu and FreeDOS IMG files working under XP without having to burn/rip ISO's a bunch, flip floppies, or other major fooling around, let me know and I'll try it out here. I am incredibly lazy and need streamlined setups for testing, i.e. updating the IMG files with each new change shouldn't take more than a minute or two. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
