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Re: DOS 7.1 Boot and Memory Problems

Posted on 2019-11-20, 10:24

Before reading anything: DOS 7.1 has no boot and memory problems! If you experience any problems, the problem is you! You should've read before. Then you would've noticed that I don't said anything else. You also would've noticed that it's me who has the problem not DOS itself. I am into this long …

Re: DOS 7.1 Boot and Memory Problems

Posted on 2019-11-20, 05:58

HIRAM has its source code released HIRAM19A.ASM. :D I added the same chipset code for enabling UMB and had HIMEM.SYS loaded in UMB. This freed up additional 1120 bytes and made 629KB of free conventional memory. There is nothing else to free. You've got 631KB and I wonder where else to shrink 2KB …

Re: DOS 7.1 Boot and Memory Problems

Posted on 2019-11-19, 21:32

My dear fellow comrades... I managed to get umbpci work with DOS 7.1 ... I went back to the scratch and wrote an all new config.sys using umbpci + Hiram + himem and got a total amount of epic 631K free conventional memory... I feel like one of the first humans made fire... 😀

Re: DOS 6 22 vs DOS 7.1

Posted on 2019-11-18, 12:52

Lotus III has known problems with fast CPUs. If that is your issue, there may be a fix: https://www.vogons.org/viewtopic.php?p=308588#p308588 Not sure about the others - as I said "Dune 2" works for me, but I don't have an MT-32, just a general MIDI wavetable card. I haven't tried 'Beneath a Steel …

Re: DOS 6 22 vs DOS 7.1

Posted on 2019-11-18, 12:06

Lotus III - Not working with every memory manager in DOS 6.22, yet not tested in 7.1 Dune 2 runs perfectly on my retro machine with DOS 7.1 (Windows 98SE) and UMBPCI in pure DOS mode. It also runs perfectly with EMM386.EXE for that matter. What sound configs do you have. I am using Roland mt-32 …

Re: DOS 6 22 vs DOS 7.1

Posted on 2019-11-18, 11:59

Would you do us the kindness and please specify, when you say "almost every game is running" - which games are NOT running? And whether they are not running because of DOS version or because of choice of drivers / memory managers? Lotus III - Not working with every memory manager in DOS 6.22, yet …

Re: DOS 6 22 vs DOS 7.1

Posted on 2019-11-17, 22:12

kjliew wrote: I use open sourced and public domain UMM03 + HIMEM.SYS on Win98SE DOS (4.10.2222) and I have 628KB. The FAT32 smaller cluster size for bigger volume is useful in reducing disk slack space. What is UMM03?

Re: DOS 6 22 vs DOS 7.1

Posted on 2019-11-17, 21:48

I just tested a few combinations... Dos 7.1 with xmgr+umbpci - I can't get it to work.... Dos7.1 with original memory manager and modern drivers (ctmouse, shsucdx....) results 615kb... Almost every game is running well. Dos6.22 with xmgr+umbpci and modern drivers results 619kb and almost every game …

DOS 6 22 vs DOS 7.1

Posted on 2019-11-16, 18:27

Hello, Hope this isn't going to be to controversial. I just opened a new thread on memory problems with some drivers in dos 7.1. I solved these problems but that's it. I have no game here that wouldn't run at least as smooth as it does in dos 6.22. I made this stand-alone dos 7.1 version because I …

Re: DOS 7.1 Boot and Memory Problems

Posted on 2019-11-16, 15:07

Removing the usb drivers results no problem. So umbpci as well as xmgr seem to work with DOS 7.1 but as soon as usb drivers are loaded everything stops or something's not working... But otherwise... whateva - looks like i've found a way. I rebooted now 20 times or so - and everything works with …

DOS 7.1 Boot and Memory Problems

Posted on 2019-11-16, 13:15

Hello, I was experimenting with standalone DOS 7.1 and unlike DOS 6.22 I have problems with loading all drivers and having enough free conventional memory. I also had freezes depending on the order the drivers are loaded. At the moment config.sys says that: device=c:\drivers\xmgr.sys device=c:\ …

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