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Re: DOSBox-X branch

Posted on 2012-06-11, 06:56

DOSBox-x update: OK. I checked all disk geometry information to ensure it was correct. I added a test program to the DOSLIB who's job is to query Drive C using INT 13h, Fixed Disk Parameter Table, and CMOS, and show all the geometry obtained for comparison. It all matches the behavior I see in …

Re: DOSBox-X branch

Posted on 2012-06-03, 06:13

I haven't had time to focus on the IDE ATA issue, but I have added some new code to the doslib library that might be useful. - HEXMEM for Windows, a tool to poke around application-visible memory regions. Under Windows 3.1/9x/ME, this is a great way to peek into DOS memory from Windows or look into …

Re: DOSBox-X branch

Posted on 2012-05-20, 22:04

Hi guys. I've been busy with life the past week but I'd thought I'd share my findings with the issue so far: - I already tried copying an IDENTIFY DEVICE response from another drive. That doesn't work. I'm convinced that whatever I'm doing in IDENTIFY DEVICE is not the problem preventing Win95's IDE …

Re: DOSBox-X branch

Posted on 2012-05-12, 06:46

coincidently, the esdi_506.pdr is the file that unofficialy patched to allow LBA48 under win9x without using 3rd party drivers. probably esdi_506.pdr requires certain handshake to determine if the IDE controller is OK. how about using 3rd party dirvers like Intel AA, would it still saying the the …

Re: DOSBox-X branch

Posted on 2012-05-12, 06:38

Didn't someone post a link to How To Please WDCTRL a while back? Of course, that's regarding 32-bit disk access in Windows 3.1, but maybe some of the wackiness involved held over to Windows 95. (Maybe a C/H/S read to 0,0,1 immediately following a device reset is supposed to fail or something.) OK …

Re: DOSBox-X branch

Posted on 2012-05-10, 02:17

unpatched win9x has weird 28 bits LBA, instead of full 48 bits. is your LBA implementation support the 28 bits mode that win9x uses? all these years, i'm curious why win9x choose to works with 28 bits LBA? on real life, unpatched win9x might having trouble with HDD with more than 2^28 sectors. MS …

Re: DOSBox-X branch

Posted on 2012-05-10, 02:14

unpatched win9x has weird 28 bits LBA, instead of full 48 bits. is your LBA implementation support the 28 bits mode that win9x uses? all these years, i'm curious why win9x choose to works with 28 bits LBA? on real life, unpatched win9x might having trouble with HDD with more than 2^28 sectors. MS …

Re: DOSBox-X branch

Posted on 2012-05-10, 01:21

I just wonder though, will this work with Win98? I don't actually have a copy of 95. XD I know that 95 will probably work better, but I'm just wondering. Have you tried the P***** Bay? :wink: Well plenty of people had their copy up the last time I checked. The copies I test from though are actual …

Re: DOSBox-X branch

Posted on 2012-05-05, 17:18

DOSBox-x branch update: Basic IDE emulation added. There is code for both ATA (hard disk) and ATAPI (CD-ROM) emulation. The ATA disk emulation does not fully work yet. ATAPI emulation is enough to satisfy MSCDEX.EXE and the OAK CD-ROM driver I have in the VM. For whatever reason, Windows 95 …

DOS library build 1411

Posted on 2012-04-30, 09:39

http://jon.nerdgrounds.com/doslib/1411/ IDE test program: - CD-ROM read testing has been thoroughly tested and rewritten to work properly with all CD/DVD-ROM drives available for testing. The CD-ROM read test is now able to function properly in single-sector and multi-sector read modes on all test …

Re: DOSBox-X branch

Posted on 2012-04-26, 08:36

Well, the 512MB limitation was imposed by the BIOS, not the IDE controller. The 16-head limitation is caused by the IDE controller, however in CHS mode the sector field is 8 bits and the track field 16 bits. So in CHS the drive could max out at C/H/S 65536/16/256 but then you would have problems …

Re: DOSBox-X branch

Posted on 2012-04-24, 18:52

doslib release 1404 http://jon.nerdgrounds.com/doslib/1404/ IDE test program updates: - Hard disk read/write tests. Write tests include a big scary warning making it clear the test will erase whatever is on their hard disk - HDD Read/Write tests demonstrate C/H/S, LBA, and LBA48 modes - LBA48 test …

Re: DOSBox-X branch

Posted on 2012-04-23, 10:51

DOS library build 1401. Preliminary new code: hw/ide, IDE ATA/ATAPI test code. The preliminary code demonstrates how to detect the IDE controller and issue common commands to both hard disk and CD-ROM drives. It probably won't work 100% reliably on some hardware. So far though it is able to toy with …

Re: DOSBox-X branch

Posted on 2012-04-20, 20:42

And how do you propose doing that during the install phase of Windows 95? Their installer doesn't exactly have a full Win32 environment open during the initial setup phase to run daemon tools :) You copy winsetup folder with content from cd to hdd and install from hdd. I know, that's what I've been …

Re: DOSBox-X branch

Posted on 2012-04-20, 20:33

I have plenty of reasons I want to use DOSBox's code base: - VirtualBox: It's nice, it's (somewhat) user friendly, but compiling from source code is a F***ing pain in the ass not to mention a good half-hour compile. As it is, I have to be using specific versions of the Linux kernel to use it and can …

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