Search found 44 matches

by TheMechanist
Tue 22 May, 2018 12:23 pm
Forum: General
Topic: Using special machine types
Replies: 5
Views: 709

Re: Using special machine types

I see the point, but in most cases standard software won't see any difference?! .. how will the special machine types perform compared to the real machines? Can I expect that for example the Commodore PC30-III emulation will (nearly) have the same performance like the original machine?
by TheMechanist
Sat 19 May, 2018 9:47 pm
Forum: General
Topic: Using special machine types
Replies: 5
Views: 709

Using special machine types

There are a lot of special machines emulated. But what is the advantage/disadvantage of using for example an AMI 286 clone vs. Epson PC AX or Dell System 200 ? Are the special systems more accurate emulated ? And if it matters, which one of the 286s models would you recommend ?
by TheMechanist
Mon 16 Apr, 2018 10:16 am
Forum: General
Topic: [BUG?] VGA - color brightness
Replies: 5
Views: 487

Re: [BUG?] VGA - color brightness

hm .. interesting, seems that the green channel has technically a higher brightness level

http://www.vogons.org/viewtopic.php?p=351518#p351518

obviously with vgaonly dosbox tries to be as compatible as possible, so PCem does it correctly ..
by TheMechanist
Mon 16 Apr, 2018 4:37 am
Forum: General
Topic: [BUG?] VGA - color brightness
Replies: 5
Views: 487

Re: [BUG?] VGA - color brightness

What are you running in these screenshots? My own project .. using nothing special, just changing colors in mode 13h the usal way with palette registers .. added the RGB value in the left screen to show the difference, its the color of the field where this color is used. @leilei: its set to svga_et...
by TheMechanist
Sat 14 Apr, 2018 8:27 am
Forum: General
Topic: [BUG?] VGA - color brightness
Replies: 5
Views: 487

[BUG?] VGA - color brightness

Hi,

seems, that DOSBox and PCem (linux) render the colors differently .. colors look too bright in PCem for the 18bit RGB values ?! It doesn't matter, if software or openGL rendering ..

Image

Greetz

TheMechanist
by TheMechanist
Wed 31 Jan, 2018 2:42 pm
Forum: General
Topic: CRT Controller Emulation
Replies: 10
Views: 1909

Re: CRT Controller Emulation

Register 8 isn't currently emulated I'm afraid. I can add it, but probably not until the weekend. Seems, that PCem 13.1 doesn't emulate it .. would be nice for future releases to get a fully emulated crt controller, I guess some games use smooth vertical scrolling and other hacks too .. Btw. PCem 1...
by TheMechanist
Fri 19 Jan, 2018 5:47 am
Forum: General
Topic: [Linux] [PCem v13.1] Compile errors
Replies: 9
Views: 1064

Re: [Linux] [PCem v13.1] Compile errors

Solved it, libwxbase is not enough, had to install libwxgtk too, now it compiled like charm ! But ./configure --release-build didn't complain about missing libwxgtk, so I had no hint first ...
by TheMechanist
Wed 17 Jan, 2018 7:55 pm
Forum: General
Topic: [Linux] [PCem v13.1] Compile errors
Replies: 9
Views: 1064

[Linux] [PCem v13.1] Compile errors

Hi folks, just tried to compile PCem v13.1, getting a lot of errors regarding wxWidgets: Example wx-app.h:57:29: error: invalid use of incomplete type ‘class wxCommandEvent’ class CallbackEvent: public wxCommandEvent ^ In file included from /usr/include/wx-3.0/wx/wx.h:24:0, from wx-app.h:6, from wx-...
by TheMechanist
Mon 31 Jul, 2017 9:02 pm
Forum: General
Topic: CMOS memory size mismatch
Replies: 2
Views: 671

Re: CMOS memory size mismatch

okay, good to know .. I tried to set extended ram to 0 and base ram to 512 / 640 kB, but bios complains .. the only working setup - didnt test more than 1 MB - is setting ram to 512k in both pcem config & bios base memory so far, of course only suitable if 512k are enough for you ..
by TheMechanist
Mon 31 Jul, 2017 8:54 pm
Forum: General
Topic: Gfx tearing
Replies: 1
Views: 378

Re: Gfx tearing

.. after playing around it doesn't seem to be a PCem issue but a more or less common linux issue .. I deactivated xfwm composition manager, installed compton composition manager, activated glx backend with opengl-oml vsync and now tearing is almost gone, now there is a visible difference when pcem's...
by TheMechanist
Mon 31 Jul, 2017 5:59 pm
Forum: General
Topic: Best way capture pcem video & audio
Replies: 16
Views: 1657

Re: Best way capture pcem video & audio

with the excellent new wx/sdl gui screen recording is now very simple and accurate under linux, since the window size and position can be fixed, even on low end machines .. I used kazam which is very straight forward and doesn't require much ressources, it's even available from the offical ubuntu re...
by TheMechanist
Mon 31 Jul, 2017 1:56 pm
Forum: General
Topic: Gfx tearing
Replies: 1
Views: 378

Gfx tearing

I'm using a internal VSync-wait for my prods to avoid tearing when updating the gfx memory and it's working in DOSBox & real hardware .. when running PCem I see more or less heavy tearing between the frames (emulating i286/16 on i3 / i5, runs at full speed) .. even with the latest mainline. It doesn...
by TheMechanist
Mon 31 Jul, 2017 9:43 am
Forum: General
Topic: CMOS memory size mismatch
Replies: 2
Views: 671

CMOS memory size mismatch

... I've set up an Ami286 clone with 1 MB RAM .. I have no idea what to set in BIOS to get rid of this error when booting, I tried some settings without success .. BIOS tells, there are only 512kb base ram ...
by TheMechanist
Mon 31 Jul, 2017 9:34 am
Forum: Development
Topic: [Linux] GUI discussion
Replies: 218
Views: 22897

Re: [Linux] GUI discussion

one suggestion - would be nice to have some fixed screen resolutions for window .. you could either stay with fixed & scale, but in that case the window is resized everytime the resolution of the machine changes, or it stays the same window size when set to resizeable, but it's only freehand .. so g...
by TheMechanist
Mon 31 Jul, 2017 9:29 am
Forum: Development
Topic: Linux; Mainline - Build failed ..
Replies: 2
Views: 334

Re: Linux; Mainline - Build failed ..

.. runs very fine ! Excellent gui, I'm very impressed !

Just had to figure out, that pcem now - the right linux way ! - searches for ROMS in .pcem ..
by TheMechanist
Mon 31 Jul, 2017 9:27 am
Forum: Development
Topic: [Linux] GUI discussion
Replies: 218
Views: 22897

Re: [Linux] GUI discussion

Just installed latest mainline ...

simply two words: fucking excellent ! Great job !!!!
by TheMechanist
Mon 31 Jul, 2017 8:58 am
Forum: Development
Topic: Linux; Mainline - Build failed ..
Replies: 2
Views: 334

Re: Linux; Mainline - Build failed ..

oops .. after I deleted all files and started a new fresh build process (it was interrupted multiple times 'cause some dependencies were not met) it didn't fail !
by TheMechanist
Mon 31 Jul, 2017 8:50 am
Forum: Development
Topic: Linux; Mainline - Build failed ..
Replies: 2
Views: 334

Linux; Mainline - Build failed ..

downloaded the latest repository, tried to build for Ubuntu 16.04 with wx/sdl Build failed with a lot of errors, for example: pcem-wx-shaderconfig.o:(.rodata._ZTV10wxScrolledI7wxPanelE[_ZTV10wxScrolledI7wxPanelE]+0x698): not defined link to `wxScrollHelper::DoShowScrollbars(wxScrollbarVisibility, wx...
by TheMechanist
Mon 31 Jul, 2017 8:06 am
Forum: General
Topic: Best way capture pcem video & audio
Replies: 16
Views: 1657

Re: Best way capture pcem video & audio

OBS-Studio - I'm using OpenGL 2.1 hm .. at least OBS could report, that it didn't found right version instead of simply crashing ..

Cool, will give the new PCem version a try !
by TheMechanist
Sat 29 Jul, 2017 9:41 pm
Forum: General
Topic: Best way capture pcem video & audio
Replies: 16
Views: 1657

Re: Best way capture pcem video & audio

OBS Studio - immediately after start, after it failed to create GL context ..

Cool, wx is the the new gui in development ? is the daily snapshot stable or should I wait for v13 ?
by TheMechanist
Sat 29 Jul, 2017 7:04 pm
Forum: General
Topic: Best way capture pcem video & audio
Replies: 16
Views: 1657

Re: Best way capture pcem video & audio

OBS Studio crashed with memory violence on Ubuntu 16.04 .. btw. PCem changes window size on Linux everytime the resolution changes (textmode/gfx) and does it too while boot process, is there a way to keep a fixed windows size like DOSBox does, at least on linux it is hard to capture screen that's wh...
by TheMechanist
Fri 28 Jul, 2017 5:24 pm
Forum: General
Topic: Best way capture pcem video & audio
Replies: 16
Views: 1657

Re: Best way capture pcem video & audio

... tried VirtualDub (Win7), but didn't get it to work, not my cup of tea .. FFSplit is really cool ! .. will try OBS Studio for Linux ..
by TheMechanist
Thu 27 Jul, 2017 3:13 pm
Forum: General
Topic: Recommended settings for bog-standard i286
Replies: 15
Views: 1784

Re: Recommended settings for bog-standard i286

can't proof it, maybe, but it's definitately helpful to have more than one benchmark and values that run on real hardware ..
by TheMechanist
Thu 27 Jul, 2017 2:27 pm
Forum: General
Topic: Recommended settings for bog-standard i286
Replies: 15
Views: 1784

Re: Recommended settings for bog-standard i286

no, not my site, the benchmarks are from 2001 .. but it's hard today to benchmark real hardware since most of it is retired & was thrown in the trash .. checkit is a very accurate benchmark too .. and landmark was the defacto standard at that time ..
by TheMechanist
Thu 27 Jul, 2017 2:22 pm
Forum: General
Topic: Audio cracking\stuttering on win 98
Replies: 12
Views: 1680

Re: Audio cracking\stuttering on win 98

oh, seems I misunderstood the percentage value, thought it shows how the emulated cpu is occupied .. then it's clear ..
by TheMechanist
Thu 27 Jul, 2017 12:07 pm
Forum: General
Topic: Recommended settings for bog-standard i286
Replies: 15
Views: 1784

Re: Recommended settings for bog-standard i286

@Sarah - thx for your explanation ! I tested PCem settings with some dos bechmarks - Checkit 3.0, Landmark 6.0 & topbench .. very close to real machines, very impressive piece of code ! Compare here: http://mastodonpc.tripod.com/bench/speed.html Unfortunately some machine specs - especially type of ...
by TheMechanist
Thu 27 Jul, 2017 11:51 am
Forum: General
Topic: Audio cracking\stuttering on win 98
Replies: 12
Views: 1680

Re: Audio cracking\stuttering on win 98

Ah, interesting .. I discovered something similar when I was testing my adlib sound player for DOS which uses an interrupt (PCem v12 for Linux) .. everything wents fine, when choosing low end machines in PCem up to 486DX40.. but when setting the machine to something like Pentium Overdrive the sound ...
by TheMechanist
Sun 23 Jul, 2017 9:29 am
Forum: General
Topic: Recommended settings for bog-standard i286
Replies: 15
Views: 1784

Re: Recommended settings for bog-standard i286

only because of interest .. and what do the video settings internally ? what happens if you choose 8bit or slow 16bit ? Is it linked to cpu clock, approximated data transfer rates or more a rule of thumb ? Is it right that this speed is the speed for transfer between CPU and GfX card ? How does - at...
by TheMechanist
Sat 22 Jul, 2017 6:34 am
Forum: General
Topic: Best way capture pcem video & audio
Replies: 16
Views: 1657

Best way capture pcem video & audio

Hi,

DOSBox has a built-in screen video capture function.

Any recommendations for a Linux & Windows Tool for screen video capturing PCem ? I tried some with linux but didn't find a satisfactory tool especially when it comes to capturing just the screen but not the window border ..
by TheMechanist
Thu 20 Jul, 2017 9:08 pm
Forum: General
Topic: Recommended settings for bog-standard i286
Replies: 15
Views: 1784

Recommended settings for bog-standard i286

Hi, for testing purposes I'm running pcem with DOS on Ami i286 clone .. But I'm not sure which settings are best to get an emulation that is nearest to a real bog standard i286 (mass market & sold in europe) ... My setup is atm Ami 286/16 Mhz clone with OAK OTI067 Gfx (alternative Ati VGA Wonder 16 ...