Okay, I found it. I downloaded #140: Commit 6f69f3e. I put the bin files in a separate folder and copied over the config, nvr, and rom files. However this version appears to replace existing machine configuration settings with incorrect values. Including hard drive geometry and floppy drive types. T...

How can we download dev builds?

Nice that I could help you with that.

But sorry, I have no idea how to get printing to work.

It looks like PCem doesn't handle double byte characters in directories and filenames well. The directories that it tries to create should already be present, but if it can't find them it will try to create them. They directories are included in the PCem17Win.zip file. Try moving the PCem17Win folde...

@ Arjen Thanks so much for the rebase explanation and for your reply. How do I get/find the dev branch and build that patch file in(or is it already in the dev branch you mention ? (Sorry totally new at this :-( ) Denman Ok, assuming you got all the dev tools (MYSYS on Windows) including Git instal...

To rebase is a Git term for a specific way of merging changes from one branch to another. In the context of the previous post, it means that Michael has added the changes to the dev branch, so if you want to try this out you will have to build PCem from the dev branch. If the changes are good enough...

I recall from the magazines of the day, the Pentium MMX had more 1st level cache (32kB) than the original Pentium (16kB) and other improvements, apart from the new MMX instructions, making it faster. It was said that a Pentium MMX 166 was roughly as fast as an original Pentium 200. I did some quick ...

-MAC adrress That we can have a fixed IP via DHCP Add a line like this to the machine config file: macaddr = 06:00:00:00:00:01 This also allows you to have multiple machines on the network at the same time. Adding this to the configuration manager would be nice, but anyone who understands networkin...

Ok, I guess it matters what kind of experience you're looking for. :D I started in 1987 with a Amstrad PC1512 with two floppy drives and monochrome monitor. Now I can emulate this with a hard drive, the memory expansion, and a color monitor. I don't think PCem actually emulates the speed of the hard...

DrakeEdgewater wrote: ↑Thu 12 May, 2022 3:13 pm Yeah it would be nice if everything was working under one system.

Why would that be? What's wrong with having separate systems for games designed for different operating systems? (When you're emulating anyway.)

What's the purpose of the flash.bin files?

If the host supports the midi device, you can pass it through the emulated midi out. On the Sound card tab select Sound Blaster AWE 32. Sound Blaster 16 or Aztech Sound Galaxy Pro 16 AB may also work. Then click on the button on the right. In the Device Configuration window select the MIDI out devic...

@MannyMania You don't need the BIOS to detect CD-ROM unless you need to boot from it. (And I doubt this BIOS supports that.) So it's best to leave the CD-ROM drive and unused drives in the BIOS at None to speed up the boot process on slower machines. You do need to load the CD-ROM driver from config...

Didn't the PS/1 only had an internal 3.5" drive, just like the PS/2? An external 5.25" drive would be optional, and therefor only recognized as the B: drive. If you don't need to boot from 1.2MB 5.25" floppy images, you might as well want to configure it to have a 3.5" 1.44MB A: ...

I'm not sure if I understand your question correctly. But in the reference "word ptr[8]" it's assumed that DS:8 is meant. DS is the default, per x86 specification. Also, there is a reason why DS: , ES: etc are called "segment overriding prefixes" instead of "segment setting...

What happens if you change the code to this? Absolutely the same thing, without any differences in behaviour. So how would it know to look for [8] in the data segement, e.g. (0:8), and [108] in the extra segment, e.g. fff0:108, in your original program? What do you mean by running it from COMMAND.C...

What happens if you change the code to this?

vbdasc wrote: ↑Thu 24 Mar, 2022 10:49 am Even more baffling is that when I run this little program through DEBUG, it behaves normal and as expected. The weird behaviour is only encountered when I run it from COMMAND.COM.

What do you mean by running it from COMMAND.COM?

Nonetheless, even though I've figured a way around the problem, i still would like to know why it won't boot from the 20 MB disk. It reads the data from the 20 MB disk just fine, so the system is "happy enough" with the geometry to read it even though it won't boot from it. I suspect it's...

I suspect some of those limits were not always real, it just had to be the largest hard drive size that existed when those operating systems versions came out, I remember MS-DOS 2.something shipped with the Sinclair PC200 did a proper install on another computer with a 40MB Conner CP3044 drive. Ear...

I did some more testing with PC-DOS 2.10. Formatting 20 MB works just fine with this version. And I checked Wikipedia, The limit of FAT-12 is 32 MB (with 8kB cluster size) as well.

MS-DOS 3.20 max supported partition size is 16 MB. I did some testing, and apparently MS-DOS 3.20 does support partition sizes up to 32 MB. So I guess the 16 MB limit applies to FAT-12 supported in MS-DOS 2.x and the 32 MB limiet applies to FAT-16. The difference between the 16 MB and 32 MB can be ...

MS-DOS 3.20 max supported partition size is 16 MB. Also it does not support extended partitions with logical volumes. So you cannot create a D: drive for the remaining disk space. MS-DOS 3.30 max supported partition size is 32 MB and it supports extended partitions with logical volumes. So you can c...

How many games from around 2005 run just fine on Windows 10?

What games do you want to play? There might be alternatives.

I would recommend setting up different emulated PC's. One for Windows 98 games and one for DOS games. This way you could set the Windows 98 one up without DOS cd-rom and mouse drivers, and let the other one just boot DOS with cd-rom and mouse drivers. Maybe an extra one for the really old DOS games ...

Difference between emulated machines is closer than one might expect. Think of PCem as an generic PC emulator that has some tweaks to be compatible with different BIOS's.

Yes, of course if you already have Windows 98, you probable won't need to run an emulator that can run Windows 98. But maybe dondiego has special needs to do so. I tried running the Windows binary of PCem v9 on Windows 98 SE. After renaming some dll's (guess something went wrong during extracting) a...

Two beeps means the startup display mode is not set correct in nvram. You will need set this to the correct value Monochrome, Color 40x25, Color 80x25, or EGA/VGA, or Not Installed. However if your screen is not working you cannot do this, so you first have to fix your screen. Most likely the rom fi...

I was able to reproduce this with one floppy drive.

Adding a second floppy drive fixed this for me.