abk4523 wrote: ↑Fri 21 Jun, 2019 4:02 pm I know. It worked pretty well for a while but the laptop eventually started locking up after logging in.

It would only work if the processor was at least a Pentium Overdrive. :p

orarsis81, On a 386 which PCem emulates, the motherboard which uses the OPTi-495SX chipset, the RAM is actually limited to 32 MB , not 256 MB. The AMI BIOS (dated June 6, 1992) will NOT even recognise more than 64 MB and will not even POST if the RAM is manually set to anything higher than 655,296 ...

orarsis81, On a 386 which PCem emulates, the motherboard which uses the OPTi-495SX chipset, the RAM is actually limited to 32 MB , not 256 MB. The AMI BIOS (dated June 6, 1992) will NOT even recognise more than 64 MB and will not even POST if the RAM is manually set to anything higher than 655,296 KB.

abk4523 wrote: ↑Fri 21 Jun, 2019 11:48 am I may have misremembered something. I installed Windows Xp on a 486dx2 laptop from cd, but I don't remember if I used a Windows 98 boot disk.

Windows XP is not compatible with processors older than a Pentium processor, because it hard requires CMPXCHG8B and CPUID instructions.

PCem has no support for USB devices at this time. You can only boot from ATAPI or SCSI CD-ROM or Iomega ZIP drives.

If you want to boot a guest OS from USB, you can place the hard disk image, CD-ROM ISO or Iomega ZIP onto a USB device and boot it from there.

ppgrainbow, it might be not feasible to put it to PCem, but its not a joke, there always was hudge performance impact where ex. celeron 300 and 300a with difference in L1cache speed. pentium 1 and MMX also did vary with L1 cache and speed difference was also not small at all. Sorry for getting rile...

grommit2007 wrote: ↑Wed 19 Jun, 2019 3:43 pm Would it ever be possible to implement this in the future, when the CPU host resources aren't much of a problem, and with an option to select the old (current) behavior?

Not in the next release or in the foreseeable future. You can just forget about the CPU cache. It's a joke.

grommit2007 wrote: ↑Tue 18 Jun, 2019 5:01 pmHow come?

CPU cache emulation was guesswork in early versions of PCem and since the cache emulation proved to be no improvement to CPU emulation, it was removed.

That's no longer possible.

Please avoid trying to ask for ROMs on this site. Like leilei said, check your sound buffer length and CPU execution percentage as it will start dropping below 100%. On faster emulated processors, the CPU execution percentage will drop requiring a faster PC. On a AMD FX-4300 for example, I will be l...

SuperWill99 wrote: ↑Mon 10 Jun, 2019 1:21 am I think I finally managed to figure out how to solve the problem: the DLL file got messed up when I installed a seemingly faulty 3D program. Now it works!

Good to hear that you got it working again.

SuperWill99 wrote: ↑Sun 09 Jun, 2019 7:05 pm Here is the config file for my primary machine:

Thank you so much!

Can you post the system configuration file on what machine that was used to try to run one of the games in Windows 98 Second Edition? Die Hard Trilogy was released on August 31, 1996. If your configuration meets or exceeds the system requirements, then PCem v15 has some bugs that need to be worked o...

It's okay. Thank you for the co-operation.

OS/2 2.11 works with "DISKCACHE=1024,LW,AC:C" in CONFIG.SYS when using the Adaptec AHA-1542C (I haven't tested it with IDE.) Using "D" in place of 1024 simply results in a warning at startup that the DISKCACHE line is invalid. I actually have the DISKCACHE parameter disabled as ...

Have you had any luck getting OS/2 2.1 to work with the "DISKCACHE=D,LW,AC:C" enabled in the CONFIG.SYS file? I tried that and for some obvious reason, OS/2 2.1 doesn't seem to start up correctly. The OS ends up booting to a pale light gray desktop (or cyan coloured desktop if on OS/2 2.11...

Hey there! I just found out information regarding which motherboard the "AMI386 clone". The machine uses the DataExpert OPTI-495SX (471WB) motherboard. Looking at the datasheet for the DataExpert OPTI-495SX located here: https://stason.org/TULARC/pc/motherboards/D/DATAEXPERT-CORPORATION-48...

SarahWalker wrote: ↑Fri 12 Apr, 2019 9:10 am You realise this is a two year old thread you're bumping here, right?

Yep. If I bumped this thread, I must apologise for what happened here.

Cheez wrote: ↑Thu 11 Apr, 2019 10:11 pm It sounds like the installer itself is checking for free space and it probably fails over 4GB

That doesn't sound too good. If the hard disk is 4GB or smaller, it will somehow install, correct?

Black Dahlia was released on February 28, 1998. Checking the minimum system requirements from MobyGames, the game requires the following: * Intel Pentium processor running at least 90 MHz * 16 MB of RAM * 1 MB of video RAM * a 4x CD-ROM drive * Windows 95 with DirectX 5 installed The game will run o...

I feel that after a certain point you no longer need to be emulating machines, because basic virtualization will cover those bases for everything but the "it's slow" part. There shouldn't be much in the Pentium 2 age that needs an "accurate" emulator to be able to do everything ...

Posting a link to the copyrighted ROMs even if its for testing is a no-no and will be removed when Sarah sees it. >.<

If you have a problem with the software and the machines that are tested, you can post them here...but NOT the ROMs itself.

By the way, Landmark produces software.

Let's see, 65,535 cylinders, 16 heads and 63 sectors per track, that's actually, 66,059,280 sectors for a maximum total of 33,822,351,360 bytes or almost 31.5 GB which is plenty for a successful Windows 95 OSR2 installation.

I don't think that PCem has no support for reading physical floppy disks at this time, only physical CDs. If you want to use floppy disk support in a emulated machine that PCem emulates, you can use floppy disk images and be prepared to insert a floppy diskette image when you initalise a hard disk i...

As far as I know revision builds of v14 is expected to *only* have bugfixes (if any), but no new features and v15 is expected to have a redone dynamic recompiler.

That's odd have you updated to PCem v14 yet? You seem to be using an outdated version of PCem.

it's just a simple generic patch to see if Compaq LTE can run with a minimum code in PCem. its hard to write a complete patch for a whole single machine, especially from scratch. Didn't the Compaq LTE use a blueish grayscale CGA display with 4 shades of gray? The Compaq LTE 286 did use a grayscale ...

Didn't the Compaq LTE use a blueish grayscale CGA display with 4 shades of gray? The Compaq LTE 286 did use a grayscale VGA display with 16 shades of gray also. It's been mentioned a lot everywhere. :p

I would strong advise against asking where you can find the SCSI ROMs that you do not legally own. If you have a real ISA, VLB or PCI SCSI adapter and have a dumped a ROM that matches the supported adapters emulated in PCem. Don't even think about trying to ask for copyrighted ROMs in the forum, mor...

These documents are I/O port information of IBM 8514/A and XGA adaper. These may help to implement the emulation of IBM 8514/A and XGA card. Thank you so much for the help. The documentation on the IBM 8514/A and XGA adapters are really helpful! I can't wait to see the IBM 8514/A and XGA video card...