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Trouble with a YMF724E-V

Posted on 2020-12-21, 12:38

I bought an old PC midi tower that contained a PCI YMF724E-V soundcard. Trouble is I can't get the card detected in Win98 or WinMe. download/file.php?mode=view&id=98681 Does this card look like a fake chinese model

Speedsys Wipes Ramdisk (xmsdsk)

Posted on 2020-12-15, 15:15

Speedsys seems to be used a lot around here to benchmarks older systems. I started using it recently and noticed it wipes out and corrupts the contents of a ramdrive created with the popular Xmsdsk. Create a ramdrive, doesn't matter what size or options you use. Copy any files to it or however you …

Re: "Bart Vs the Space Mutants" problem

Posted on 2020-12-14, 16:02

in DOS
I've been trying to get this game working, running an original version. It runs from both floppy or HD but then blank screen after typing in the page number for copy protection. It works in dosbox. First game I have that doesn't work on a 486 simply caused the presence of a ISA Sb16. Running with a …

Re: DOS UDMA

Posted on 2020-12-14, 13:24

I have a number of motherboards with a UDMA or ATA selections available in the BIOS and it has an affects DOS performance. Is that what you guys are talking about? No, on every other motherboard I have used, changing the UDMA settings in the Bios has made no difference. In real mode dos without …

Re: Missing conventional memory

Posted on 2020-12-12, 20:44

I have loaded the bios defaults, no change. Also reflashed every version of the bios available, from oldest to newest. I have turned off everything in the BIOS, even the floppy. No mention of 8kb or memory regions. I guess it's just a bit maddening not having the full 640kb. Would be good to know …

Re: Missing conventional memory

Posted on 2020-12-12, 18:54

The board has a slot for cache RAM, right? Is there anything in that slot? The coast slot is empty. My revision of the board has the coast slot but also 2x 128KB pipeline burst cache chips soldered to the motherboard. This picture is the same rev GA-586ATS as my board: https://i.ebayimg.com/images …

Re: Missing conventional memory

Posted on 2020-12-12, 17:09

Hmm, this is strange and I am running out of ideas . Are you running BIOS version 1.32 www.gigabyte.com/au/Motherboard/GA-586ATS/support#support-dl ? Have tried resetting to default in BIOS setup ? The only other thing that I can think of is that your video card's BIOS is using 8KB of RAM below the …

Re: Missing conventional memory

Posted on 2020-12-11, 22:33

Thank you for the info. 2 questions: a) Do you have an ISA or PCI disk controller in that machine ? b) If you create a bootable floppy, copy mem.exe to it and boot from it, do you get the same results? My guess is that you either have a disk overlay you don't know about, a bootsector virus or some …

Re: Missing conventional memory

Posted on 2020-12-11, 19:19

Got back home, it is exactly 632KB of conventional memory, so 8kb is missing, not 9kb. These are two screenshots, clean boot to DOS, the only thing running is SNARF, dos screen capture tsr that takes up 4K. I used it to take the pictures. MEM Filename SNARF000.jpg File size 27.08 KiB Views 371 …

Re: Missing conventional memory

Posted on 2020-12-11, 17:08

Is that 631K total? Or 631k available? DOS itself needs memory to run, which includes IO.SYS and MSDOS.SYS, as well as the command interpreter. A plain install will not be loading DOS into the HMA, so it must be loaded low into the 640K area. Use MEM /C /P to see a breakdown of what is consuming …

Re: Missing conventional memory

Posted on 2020-12-11, 16:54

Any chance the hard disk has some DDO (Dynamic Drive Overlay) installed? No DDO, just normal fdisk and format, using fat16. Also I should mention, no sound card, only video card and hard drive connected using pata cable on ide 0 of the onboard motherboard controller (also tried ide 1 connector). …

Missing conventional memory

Posted on 2020-12-11, 16:34

I have been testing an old motherboard from 1996, a Gigabyte Socket 7 GA586-ATS. Clean installed DOS 6.22 and when I run the mem command, conventional memory shows 631K instead of 640. This is with nothing loaded in config.sys or autoexec.bat, not even himem.sys, just a clean boot. The machine has …

Re: DOS UDMA

Posted on 2020-12-11, 16:18

Enabling UDMA in DOS with BIOS only assist has been hit and miss (mostly miss) for me depending on the motherboard. I use drivers from the following website to enable UDMA in DOS. I have had good luck using xhdd.sys & xhdd1.sys from the package. The drivers support a number IDE chipsets. http:// …

DOS UDMA

Posted on 2020-12-10, 19:33

After trying various SD cards and compact flash drives for dos, I setup an 120GB SSD, fat32 formatted and booted straight to dos7.1 on a gigabyte GA-G41M-ES2L motherboard. The SSD is connected straight to the intel sata ports (ich7). Now I read that hard drives in dos are always limited to PIO mode, …

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