Search found 82 matches
- Mon 12 Apr, 2021 6:32 am
- Forum: General
- Topic: Cannot format blank floppy disk ?!
- Replies: 11
- Views: 4118
Re: Cannot format blank floppy disk ?!
Maybe you should take a look at the FAQ for very urgent bugs...
- Thu 08 Apr, 2021 10:16 am
- Forum: General
- Topic: Emulating an Amstrad PC5286
- Replies: 13
- Views: 13324
Re: Emulating an Amstrad PC5286
A lot of time ago, Amstrad Plc gave permission to use Sinclair (and I guess Amstrad CPC) but only on emulators (not on real machines like ZX-Uno or clones like Harlequin). I'm sure that somebody commented, but... - I don't know if they gave permission for all of their ROMs/BIOS (including things lik...
- Sun 04 Apr, 2021 11:55 am
- Forum: General
- Topic: Clustersize (and other things) ignored by MSDOS?
- Replies: 4
- Views: 1988
Re: Clustersize (and other things) ignored by MSDOS?
I don't think that changing parameters on a filesystem is a wise move, it would lead to a heavily corrupt filesystem (did you try to execute chkdsk after that?). If you change those parameters and then format the filesystem again, MS-DOS will do with their default parameters... so everything will be...
- Sat 05 Dec, 2020 10:16 am
- Forum: General
- Topic: Documentation bugs/undocumented things
- Replies: 1
- Views: 1724
Documentation bugs/undocumented things
Hi I've been mining inside PCem.exe (v17) and looking to the README. So far, there are some bugs and other findings. Bugs IBM PC: ibmpc/basicc11.f6, ibmpc/basicc11.f8, ibmpc/basicc11.fa and ibmpc/basicc11.fc are mentioned in the documentation. They are not mentioned in PCem.exe, so I guess it won't ...
- Sun 15 Nov, 2020 5:20 pm
- Forum: General
- Topic: Hard drive for the Compaq Deskpro 386
- Replies: 4
- Views: 3291
Re: Hard drive for the Compaq Deskpro 386
AFAIR, Compaq used ESDI hard drives on their Deskpro computers.
My Deskpro PCem machine uses a WD1007 ESDI controller and a 1024h 8c 17s hard drive (those figures came from the Deskpro datasheets), but in older versions you could use XTIDE BIOS as non-native HDD controller.
My Deskpro PCem machine uses a WD1007 ESDI controller and a 1024h 8c 17s hard drive (those figures came from the Deskpro datasheets), but in older versions you could use XTIDE BIOS as non-native HDD controller.
- Sat 31 Oct, 2020 9:19 am
- Forum: General
- Topic: PCem does not recognize the IBM AT 286 ROM
- Replies: 2
- Views: 1967
Re: PCem does not recognize the IBM AT 286 ROM
The docs are wrong, PCem needs two files called 62x0820.u27 and 62x0821.u47.
- Tue 29 Sep, 2020 9:41 am
- Forum: General
- Topic: Personal Deskmate 2 for Tandy 1000hx
- Replies: 17
- Views: 11099
Re: Personal Deskmate 2 for Tandy 1000hx
There's no such thing as abandonware. Did you miss a word? The sentence should be: There's no such thing as legal abandonware. I like having a term like abandonware to refer to software that is not cared for anymore, but (as you tried to explain) unless the copyright owner releases it as public dom...
- Sun 26 Jul, 2020 7:29 am
- Forum: Development
- Topic: documentation rework
- Replies: 13
- Views: 8823
Re: documentation rework
The is no problem to include the MD5/SHA1, the thing is that there is not just ONE valid file. There are many versions of a same ROM and all should work Should != will. The thing is that PCem programmers check their changes with a set of ROMs. Other ROMs for the same system may be untested and may ...
- Fri 24 Jul, 2020 2:24 pm
- Forum: General
- Topic: PCem USB support
- Replies: 15
- Views: 12698
Re: PCem USB support
Maybe it could be interesting to create "virtual" USB HID or MSD devices. Something like getting keyboard/mouse/joystick input and feed it into that virtual HID device. It would be a way to overcome the axis/buttons limitations of traditional gameport. MSD devices could be emulated using a...
- Thu 09 Jul, 2020 2:19 pm
- Forum: General
- Topic: How to install PCem v16 on Linux
- Replies: 24
- Views: 18998
Re: How to install PCem v16 on Linux
It's complaining about some opengl development package, so you'll need something like libgl-dev. In Debian, it's a virtual package (provided by libgl1-mesa-dev).
- Wed 01 Jul, 2020 7:09 am
- Forum: General
- Topic: Speed timings for emulated hard disks
- Replies: 11
- Views: 12304
Re: Speed timings for emulated hard disks
Although there were 15000 rpm SCSI disks, I don't think they would be available at Pentium II era. Also, to match speeds settings you'll have to include some of this parameters: - Interleave (very important for MFM and RLL disks). - How many ms takes the head motor to jump from a track to the next. ...
- Mon 04 May, 2020 5:37 am
- Forum: General
- Topic: No sound with any OS after buying New PC
- Replies: 2
- Views: 2691
Re: No sound with any OS after buying New PC
Windows 10 lets you choose volume settings on a per-applications basis. That affects to volume and audio output (i.e.: choosing between internal audio, a PCI souncard or an HDMI output).
So... do you have the right audio output selected with enough volume?
So... do you have the right audio output selected with enough volume?
- Sun 26 Apr, 2020 7:37 am
- Forum: General
- Topic: Question about copy protection in dos games
- Replies: 13
- Views: 9687
Re: Question about copy protection in dos games
Interesting story: I bought one of the Forgotten Realms releases on cd. There were 12 games which came with a book I still have. The book was apparently the manual for all the games. After playing one level of one game, the copy protection kicked in and asked me for a certain word on a certain page...
- Sat 25 Apr, 2020 7:09 am
- Forum: General
- Topic: Question about copy protection in dos games
- Replies: 13
- Views: 9687
Re: Question about copy protection in dos games
1) It is what it says. Measures to prevent users from copying games instead of buying.
2) https://www.google.com (or https://duckduckgo.com if you're concerned about privacy).
2) https://www.google.com (or https://duckduckgo.com if you're concerned about privacy).
- Sun 01 Mar, 2020 9:18 am
- Forum: General
- Topic: Old Mac OSs on PCEM?
- Replies: 7
- Views: 7890
Re: Old Mac OSs on PCEM?
AFAIK, MacOS 9 runs on Power PC CPUs and earlier releases on 68000 series. Nothing related to 80x86 CPUs/architecture (except some Macintosh that had a PDS card, like Power Macintosh 6100... but still far away from PCs). The only Macintosh that resembles PC architecture are modern ones, and that CPU...
- Fri 24 Jan, 2020 3:57 pm
- Forum: General
- Topic: Autodesk 3DS R4 “SentinelPro must be plugged into parallel port”
- Replies: 3
- Views: 3877
Re: Autodesk 3DS R4 “SentinelPro must be plugged into parallel port”
Some (more than ten) years ago I used an unofficial DOSBox version patched with LPT passthrough to run a DOS program that needed a dongle. Also, I guess there must be some virtual machines that support LPT passthrough. Even in that case, you'll need a REAL (=NOT USB) parallel port in your computer a...
- Tue 14 Jan, 2020 5:51 pm
- Forum: General
- Topic: Need for Speed: Special Edition black screen hang when running installer
- Replies: 17
- Views: 13460
Re: Need for Speed: Special Edition black screen hang when running installer
Abandonware is still copyright-protected.
Wait until copyright expires (see https://www.copyright.gov/help/faq/faq-duration.html ) or the copyright holder puts in into public domain.
Wait until copyright expires (see https://www.copyright.gov/help/faq/faq-duration.html ) or the copyright holder puts in into public domain.
- Sat 28 Dec, 2019 9:27 am
- Forum: General
- Topic: Is it possible to boot a guest from usb?
- Replies: 15
- Views: 16955
Re: Is it possible to boot a guest from usb?
This is probably just my misunderstanding of the hardware. I have an atapi drive from an old laptop and am trying to use it with PCem. I use an atapi ide to usb adaptor to connect it to my laptop. I tried a pentium overdrive mmx 200 bios and looked for a boot from usb option but could not find one....
- Fri 13 Dec, 2019 6:05 am
- Forum: General
- Topic: Starting PCem - How to save BIOS settings ?
- Replies: 3
- Views: 4270
Re: Starting PCem - How to save BIOS settings ?
Do you have write permissions on PCem folders and PCem nvr files?
- Tue 21 May, 2019 5:16 am
- Forum: General
- Topic: [OT-ish] fitting Linux distros?
- Replies: 8
- Views: 10489
Re: [OT-ish] fitting Linux distros?
I'd try a Puppy Linux, but that can be tricky. It seems that 4.x versions can run on 128 Mb, and that versions are easy to find/download. The tricky part is that you'll need to install it to hard disk (do NOT use a frugal installation), then add devx packages (to get your GCC, but I don't know which...
- Tue 21 May, 2019 5:08 am
- Forum: General
- Topic: Raspbian can't compile v15
- Replies: 9
- Views: 14297
Re: Raspbian can't compile v15
A Raspberry is a fairly slow device... what about cross-compiling from a PC to a Raspberry?
- Sun 12 May, 2019 7:29 am
- Forum: General
- Topic: Speed timings for emulated hard disks
- Replies: 11
- Views: 12304
Re: Speed timings for emulated hard disks
I rather like the idea that when creating an HD, it could be possible to select from a list of makes and models, much like you can with other hardware. Granted, it'd be little more than a cosmetic thing right now, but it'd make sizing drives easier, and not coming up with wacky geometry some OSes m...
- Sat 23 Feb, 2019 6:54 am
- Forum: General
- Topic: Shutdown Or Close Window
- Replies: 3
- Views: 5774
Re: Shutdown Or Close Window
I guess you're using Windows 95 or 98. In that systems, the proper closing procedure would be goint to Start Menu on the emulated machine, and choose Shutdown. Then wait until a screen announces that you can safely shutdown your computer and then close PCem. Failing to do so means that some files on...
- Tue 12 Feb, 2019 6:16 am
- Forum: General
- Topic: Maybe create a set of recommended system profiles?
- Replies: 7
- Views: 8618
Re: Maybe create a set of recommended system profiles?
I guess the only standard profile would be an XT with MDA/CGA with or without IDE hard disk, because this are the only roms available in PCem web (and everybody should have them), at least if you try to distribute them. For other "standard" computers, I'll mimic existing PCs. For PC/XT/AT ...
- Sat 26 Jan, 2019 7:58 am
- Forum: General
- Topic: CD Image Format - Blindwrite
- Replies: 5
- Views: 7675
Re: CD Image Format - Blindwrite
What about using a virtual drive like Alcohol 52% or Daemon Tools?
Mount your CD image on the virtual drive and then use it from PCem.
Mount your CD image on the virtual drive and then use it from PCem.
- Wed 23 Jan, 2019 6:17 am
- Forum: General
- Topic: Wordbasic overflow error 6 with DX processor
- Replies: 5
- Views: 8025
Re: Wordbasic overflow error 6 with DX processor
Virtualbox is virtual machine software, PCem is an emulator - they aren't really the same thing at all. Does this happen with real 486DX hardware? It's odd that it only happens with 486DX CPUs. This sort of thing leads me to believe that it's an actual bug with them or the recompiler (which is slat...
- Fri 02 Nov, 2018 4:51 pm
- Forum: General
- Topic: How to add an external ROM like XT-IDE?
- Replies: 2
- Views: 4412
Re: How to add an external ROM like XT-IDE?
To use XT-IDE ROM, open the configuration and go to the disks tab. In HDD, you must choose [IDE] XT-IDE or [IDE] XT-IDE (AT) and PCem will use that ROM. (If your computer is a IBM PS/1 model 2011, PCem will use a specific XT-IDE ROM automatically) The bad news is that you can only load XT-IDE ROMs, ...
- Sat 20 Oct, 2018 6:40 am
- Forum: General
- Topic: [Question] 5.25 1.2mb disks on DOS 2.0?
- Replies: 6
- Views: 9487
Re: [Question] 5.25 1.2mb disks on DOS 2.0?
On second thought, HD disks needs faster FDCs that maybe weren't supported in plain DOS 2.0, but I wonder it there existed a driver that could read HD floppies. If the limit is imposed by the FDC (I mean, the routines that access the FDC) it have sense that the limit are DD disks, but DOS should be ...
- Fri 19 Oct, 2018 5:21 am
- Forum: General
- Topic: [Question] 5.25 1.2mb disks on DOS 2.0?
- Replies: 6
- Views: 9487
Re: [Question] 5.25 1.2mb disks on DOS 2.0?
Maybe is not related... My ZX Spectrum +3 (a Z80 machine) had a 3 inch floppy drive (single sided, 180k/side) but can be fitted with 3.5 inch drives. +3DOS will format any disk to 180k, but (with the right tools) can use the whole 720k and plain +3DOS (was stored in ROM, so it can't be changed easil...
- Sun 14 Oct, 2018 3:59 pm
- Forum: General
- Topic: Host machine survey
- Replies: 186
- Views: 263777
Re: Host machine survey
It is possible to include the fastest virtual CPU that is possible to emulate with the physical one? Or include a FAQ or pin a post with this information. Mine is i5-3210M (2 cores / 4 threads at 2.5 GHz) and I am able to emulate up to Pentium@75 at almost full speed. I've updated my machine (mainb...