Re: Issues with DTC 3274 VLB SCSI card

Posted on 2018-07-31, 02:53

by

by NJRoadfan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The problem with the SCA to 50-pin adapters is the lack of "upper byte termination" (cheap 68 to 50pin adapters have this problem too). The upper 8-bits of the wide SCSI bus on the drive need to be terminated since they are not connected to anything on a narrow 8-bit controller.

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Re: Issues with DTC 3274 VLB SCSI card

Posted on 2018-07-30, 11:39

by

by NJRoadfan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Those cheapo SCA adapters are improperly terminated (they don't terminate the upper bytes) thats why they usually don't work. How do you know the ACARD adapter is only running at 5MB/sec? The SCSI BIOS is almost certainly showing the drive's firmware revision which the ACARD pulls from the ATA ID …

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Re: Winevdm

Posted on 2018-07-23, 01:42

by

by NJRoadfan

in PC Emulation

in PC Emulation

DosFreak wrote: https://virtuallyfun.com/wordpress/2018/07/15/winevdm/ Grab the latest build linked on the site. It fixes crashing with commdlg calls. SimTower can now save/load cities!

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Re: Promise FastTrak66/Ultra66 ATA/66 PCI and MS-DOS

Posted on 2018-07-20, 16:23

by

by NJRoadfan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The cards are fast under DOS too. Unlike the BIOS code for onboard controllers, the Promise ROM enables UDMA transfer modes for all connected devices by default.

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Re: IBM APTIVA MASTER RACE!

Posted on 2018-07-20, 14:03

by

by NJRoadfan

in Marvin \ System Specs

in Marvin \ System Specs

Same keyboard I have on my main machine. Its IBM in name only as the keyboard was actually made by Chicony. The unit I got was purchased new as an "IBM Basics" branded product.

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Re: Winevdm

Posted on 2018-07-17, 20:28

by

by NJRoadfan

in PC Emulation

in PC Emulation

My 1.0 release CD doesn't have the uncompressed copies on it. I got it installed anyway. Runs but crashes trying to save or load a game file. The VDM has significant overhead. SimTower runs like its on a 486 on a Core2Duo.

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Re: Winevdm

Posted on 2018-07-17, 04:07

by

by NJRoadfan

in PC Emulation

in PC Emulation

The installer actually runs in WineVDM (needs lzexpand.dll in its SYSTEM directory even though one is provided), gives me path errors after prompting for an install location though.

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Re: Winevdm

Posted on 2018-07-16, 20:55

by

by NJRoadfan

in PC Emulation

in PC Emulation

Guess I'll have to dig out my copy of SimTower. That one is notable because it uses the WinG API.

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Re: XT-IDE Universal BIOS + Windows 95C = MS-DOS compatibility mode

Posted on 2018-07-16, 15:35

by

by NJRoadfan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm going to assume the 10GB = primary master and 3.2GB = primary slave. Try setting your primary master drive to Type 47/User Defined. Use 1024 cyl, 16 heads, 63 sectors (the XTIDE ROM will override this anyway). Reboot and see if Windows 95 handles the drive correctly.

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Re: Opinions on these (modern) SSDs

Posted on 2018-07-15, 20:19

by

by NJRoadfan

in Milliways

in Milliways

Kingston also put out a dud of a USB 3.0 flash drive. The write speed on the thing is many times slower then my old USB 2.0 sticks. Complete junk.

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Re: Win3mu Soon OpenSource

Posted on 2018-07-08, 02:12

by

by NJRoadfan

in PC Emulation

in PC Emulation

otvdm.exe --app-name your.exe

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Re: Coding for DOS with an eye to multiplatform options

Posted on 2018-07-07, 21:48

by

by NJRoadfan

in Milliways

in Milliways

Check out Burger Becky's BurgerLib, its multiplatform and supports OpenWatcom DOS/4GW as a target. https://github.com/Olde-Skuul/burgerlib

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Re: Win3mu Soon OpenSource

Posted on 2018-07-07, 16:00

by

by NJRoadfan

in PC Emulation

in PC Emulation

Runs quite a few of the Windows Entertainment Pack games without a problem, including Chip's Challenge (no music though). Some like Jezzball crash and burn pretty good too.

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Re: Win3mu Soon OpenSource

Posted on 2018-06-27, 22:44

by

by NJRoadfan

in PC Emulation

in PC Emulation

The reason why Win16 support was removed from x64 versions of Windows is that Microsoft was likely using v86 mode to simulate the 64k memory segmentation used by the 286 and to easily isolate the processes from the rest of the system. Win3mu replicates this with its own emulator and memory mapper. I …

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Re: Help to Identify Aztech ISA Sound Card

Posted on 2018-06-15, 15:56

by

by NJRoadfan

in Marvin \ Sound

in Marvin \ Sound

Drivers for the SOUND144AM can be found on various Packard Bell Master CDs. Hardware resources are soft configured by a DOS program. Windows 9x comes with the drivers and will auto detect the card.

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Re: VGA Capture Thread

Posted on 2018-06-14, 12:44

by

by NJRoadfan

in Marvin \ Video

in Marvin \ Video

Looking at the image, both horizontal sampling rate and sampling phase need to be tweaked. Don't rely on the OSSC test image for accuracy when calibrating the levels on the capture card, use a test pattern from your source. Its very likely the capture card is needlessly converting the input video's …

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Re: Low profile PCI SATA controller?

Posted on 2018-06-11, 12:11

by

by NJRoadfan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just make sure the card has Windows 98SE drivers. The early Si311x SATA1 cards did, but the later ones likely didn't. Sadly the SATA1 cards tended to have weird compatibility problems with later SATA2 and 3 drives.

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Re: Mystery 486 Motherboard

Posted on 2018-06-08, 16:49

by

by NJRoadfan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That Tseng card is Opti Local Bus. Note the silk screened LOCAL BUS text near the edge connector. The motherboard itself does not have an EISA BIOS on it either. AMI used a gold sticker on EISA boards and clearly stated it was a EISA BIOS on boot and the BIOS label. Also, EISA boards usually do not …

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Re: Windows 95 and USB flash drives

Posted on 2018-06-08, 15:33

by

by NJRoadfan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

HP shipped the Pavilion 6350 which used that motherboard in 1998. It is NOT period correct for 1997 and likely came with Windows 98. These boards likely never worked right either: https://arstechnica.com/civis/viewtopic.php?f=8&t=815641

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Re: Windows 95 and USB flash drives

Posted on 2018-06-08, 12:34

by

by NJRoadfan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have never used Windows 95+USB with anything but Intel UHCI controllers. Its possible the SiS USB was never properly supported in Windows 95 to begin with. The controller itself is OHCI compliant but troublesome seeing that people are having trouble getting it working under Windows XP on Socket …

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