Re: Real mode boot to DOS 6.22 & BIOS INT13h

Posted on 2023-05-10, 17:49

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

MS-DOS 7 and onward are LBA-aware So MS-DOS 6.0 didn't just use BIOS for an addressing scheme? But in v7.0 the software developers went with the newer addressing that would permit hard disks larger than 512MB? Did someone have to give up CHS so they could have LBA? And so BIOS vendors got sketchy …

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Re: Real mode boot to DOS 6.22 & BIOS INT13h

Posted on 2023-05-10, 16:57

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

your problem is using VM's to setup a CF image that done via LBA when the motherboard is using CHS. Yes, so is DOS pre-LBA? Wasn't there a time just prior to 1995 where LBA was supported by DOS if the support was in BIOS? So do could use an LBA disk if BIOS was LBA aware. I am very interested in …

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Re: Real mode boot to DOS 6.22 & BIOS INT13h

Posted on 2023-05-10, 16:11

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello. Thanks for the info you shared. I will be trying XTIDE soon. Very important for someone to use if building an old DOS era machine. For anyone interested I found a good video: "How to flash XT IDE BIOS and use it with your network adapter." https://youtu.be/5NRHMTGXd94 So my problem is not …

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Real mode boot to DOS 6.22 & BIOS INT13h

Posted on 2023-05-06, 15:41

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello. I have, after several months, installed DOS 6.22 on a motherboard with a 486 chipset and Plug'n Play BIOS. Thanks for advice I have been given by this forum. Now I need help getting my facts in order. I have done some reading but I wonder about the opinions of those here with more experience …

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Ontrack Disk Manager

Posted on 2023-04-30, 14:59

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I would like to know more about Ontrack Disk Manager. I know there are several versions. I am interested in this program because I recently discovered that there was once a time in PC history when hard drives came bundled with OEM versions of Ontrack Disk Manager. If you moved a hard drive from one …

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Re: Question about NetBIOS over TCP/IP Under WIN95

Posted on 2023-04-06, 13:13

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks. After using netstat I noticed the corresponding ports were open and this was true on both Win95 and Win11 machines. Then I tried nbtstat -A 192.168.x.x and could see computer name, user, and name of network on the Win95 machine. That's when I realized the two nodes were communicating over …

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Question about NetBIOS over TCP/IP Under WIN95

Posted on 2023-04-05, 16:24

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello. I am interested in bringing a Windows 95 machine up to current day Microsoft networking status. The WIN95 machine has straight-up NETBEUI/NETBIOS that came with Windows 95 OSRv2. Research leads me to understand this protocol died, with it's final nod during the days of Windows XP. But I use …

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Re: Diamond Stealth VRAM Dip switch settings

Posted on 2023-03-24, 13:29

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've been looking at a few CRTs from the 90s. The NEC Multisync 3D, compared with its predecessor, had a higher resolution due to a faster refresh rate and tighter dot pitch. https://crtdatabase.com/crts/nec/nec-jc-1404hma The "IBM 8514 monitor" aka IBM PS/2 monitor(s) have a comparable but not the …

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Re: Diamond Stealth VRAM Dip switch settings

Posted on 2023-03-24, 01:38

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ah, yes, it was 4:3. It's a 2005 ViewSonic LCD. I wonder why the Diamond Stealth VRAM video card permitted options for the monitor on power up? Was there some reason to set the switch for monitor IBM 8514 on power up? Do you think most monitors back in the 90s used the same analog signal as the IBM …

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Diamond Stealth VRAM Dip switch settings

Posted on 2023-03-23, 21:24

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've noticed a dip switch on the Diamond Stealth VRAM where on the PCB one side of the switch has traces leading to the S3 911. The other side looks like a grounding pad. I have them all closed, thus shunting all the traces leading from the dip switch to the GPU. I have a list of the dip switch …

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Re: 2D Acceleration - first chipsets

Posted on 2023-03-21, 00:30

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks. I can see everyone who replied is very interested in graphics history. I recently decided to build a 486 because of how much support I knew I could get from the large community that has been the IBM PC clone industry. I now realize that there was a driver for the s3 chipset and Windows 3.1. …

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2D Acceleration - first chipsets

Posted on 2023-03-18, 17:30

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

When does the acceleration take place? In the Windows 3.x shell? What causes a 2D Accelerator chipset to respond to the Windows GUI? As far as I know these chipsets of the early 90s did not give games in DOS a boost in VGA mode performance. But Windows 3.x had no graphics chipset driver. Maybe a 2D …

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Did Windows 95 replace the INT13h service routine?

Posted on 2023-03-10, 20:06

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am referring to a page from my motherboard manual: To support LBA or LARGE mode, there are softwares located in the AWARD HD Service Routine“INT13H”. It may fail to access a HDD with LBA or LARGE modes selected if you are running under an Operating System that replaces the whole INT13H service …

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Re: An IDE disk initialized on an older machine is inaccessible on my late model pc

Posted on 2023-02-06, 01:31

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It is likely that your disk may have no LBA support, so CHS only. So it will make problems on USB adapters. No wonder to me. Any idea why my model hard drive, the 425 MB Conner, shows RLL as the recording method on "Stason". Tried a search for specs by Stason for numerous other hard drives in that …

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Re: An IDE disk initialized on an older machine is inaccessible on my late model pc

Posted on 2023-02-05, 17:53

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I just found this looking for info about enclosures here on vogons. https://www.vogons.org/viewtopic.php?f=61&t=75925 Similar situation. He had a 486 and needed to revive the OS. He wanted to try a USB / IDE enclosure. But someone explained that you can't use a CHS drive with a USB adapter. I am …

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Re: An IDE disk initialized on an older machine is inaccessible on my late model pc

Posted on 2023-02-05, 17:36

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The Win95 boot floppy was made with an *.ima downloaded from REMOVED PC. It is OSRV2 and some files in the archive post date 1995. The hard drive is a Conor CFS425A. It is 425 MB and PATA-1. The computer I formatted this drive on is/was an Aptiva E-Series 580. It is a Win98 machine where I used the …

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An IDE disk initialized on an older machine is inaccessible on my late model pc

Posted on 2023-02-02, 21:52

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think my newer windows 11 machine is unable to recognize the partition on an IDE hard disk I formatted with Windows 95, on a machine that's over 20 years old. It had EIDE and the disk was IDE. I used "format c: /s". Then after I got it formatted and bootable my older machine had succumbed to some …

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Re: Support for "legacy" hardware

Posted on 2023-01-28, 20:28

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have not returned to this topic for awhile but in this time I've learned much from the replies here and on my own I've read about important working details of the ibm-pc hardware. To start off with, this thread is about a socket 5 mother board I got that didn't come with on board support for a …

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Support for "legacy" hardware

Posted on 2023-01-20, 14:25

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello. I'm currently working with a socket 5 motherboard and pentium 100 MHz CPU. It is a soyo sy-033a and I have no clue how they planned on the user installing an OS. There isn't a ide disk or floppy connector on the motherboard. I have two "legacy" ISA slot IDE interfaces, but accessing a CD-ROM, …

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Re: What are good ICs to check with a DSO?

Posted on 2023-01-11, 23:25

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by serialShinobi

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am waiting on a low insertion force PGA socket to arrive by mail. I believe the LIF will make probing tiny ZIF socket holes easier. When it does I plan to resume testing. But for now the ZIF socket has a burn mark at hole for CLK. I was using staples and a set of helping hands I got off Amaz*n . …

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