Search found 44 matches

by UPerschke
Thu 20 Jun, 2019 9:07 pm
Forum: General
Topic: Possiblity of implementing cache emulation
Replies: 14
Views: 475

Re: Possiblity of implementing cache emulation

I think perfect cache emulation is something we all like to have with PCem Why? There is no speed gain from it. On a physical computer speed gain with cache arises from the fact that cache memory is several orders of magnitute faster than DRAM. In PCem all emulation is taking place in it's host DRA...
by UPerschke
Mon 03 Jun, 2019 6:04 pm
Forum: Development
Topic: v15 compatibility & bug list (WIP)
Replies: 57
Views: 12020

Re: v15 compatibility & bug list (WIP)

SarahWalker wrote:
Mon 03 Jun, 2019 5:22 pm
Windows will try to limit the total number of cores actively being used at any one time to keep the turbo frequency up. That's just how the scheduler is designed to work.
How influential would it be to disable core parking and fiddle around with frequency scaling and/or affinity?
by UPerschke
Wed 22 May, 2019 7:24 pm
Forum: General
Topic: [OT-ish] fitting Linux distros?
Replies: 8
Views: 1646

Re: [OT-ish] fitting Linux distros?

szadycbr wrote:
Tue 21 May, 2019 8:25 pm
UPerschke , true , and i only ask for 32bit as i think leilei meant to use it within PCem :)
Ohhh, gotcha. Thanks. Then Clearlinux is out of scope.
by UPerschke
Tue 21 May, 2019 8:11 pm
Forum: General
Topic: [OT-ish] fitting Linux distros?
Replies: 8
Views: 1646

Re: [OT-ish] fitting Linux distros?

so the latest wont work with voodoo This is a general problem with all distros continued after 2011. I've not seen a backport either. I did not consider discontinued distros because many of them don't run on recent hardware. if it has 32bit distro then it is surely pae and needs cmov It's 64 bit on...
by UPerschke
Tue 21 May, 2019 5:49 pm
Forum: General
Topic: [OT-ish] fitting Linux distros?
Replies: 8
Views: 1646

Re: [OT-ish] fitting Linux distros?

Close hit: https://antixlinux.com/ Close because: 192 MB required ,256 MB recommended. Otherwise it should be suitable. Closer hit, maybe accurate: https://clearlinux.org Can run on 128 MB RAM/600 MB disk. Ships with latest mesa. Dedicated graphics support was added last year. Menu is pretty slim, c...
by UPerschke
Sun 19 May, 2019 6:08 pm
Forum: Development
Topic: v15 compatibility & bug list (WIP)
Replies: 57
Views: 12020

Re: v15 compatibility & bug list (WIP)

V15 release FIC VA-503+ shows something odd here: Clock defaults to 1/1/2000 if host sync is enabled. It cannot be set to a future date nor past date even in BIOS. The year would just revert to 2000 if changed with PgUp/PgDown. BIOS used: ftp://ftp.fic.com.tw/motherboard/bios/socket7/va-503+/JE4333....
by UPerschke
Sun 19 May, 2019 5:49 pm
Forum: General
Topic: v15 released!
Replies: 33
Views: 6742

Re: v15 released!

Awesome job, thanks ever so much!

EDIT: FIC issue moved to buglist.
by UPerschke
Sat 18 May, 2019 9:27 pm
Forum: General
Topic: Action Soccer Windows 98 SE installation
Replies: 9
Views: 1753

Re: Action Soccer Windows 98 SE installation

Do you think that the game freezes because of this or could it be another problem?
Hard to tell. Have you tried it in Dosbox?
by UPerschke
Sat 18 May, 2019 6:20 pm
Forum: General
Topic: Action Soccer Windows 98 SE installation
Replies: 9
Views: 1753

Re: Action Soccer Windows 98 SE installation

Oopsie, my bad. HIMEM.SYS is in C:\WINDOWS.
by UPerschke
Sat 18 May, 2019 4:32 pm
Forum: General
Topic: Action Soccer Windows 98 SE installation
Replies: 9
Views: 1753

Re: Action Soccer Windows 98 SE installation

Add to top of config.sys: DEVICE=C:\DOS\HIMEM.SYS DOS=HIGH,UMB And as Sarah suggested change DEVICE= to DEVICEHIGH= (for all other config.sys DEVICE= entries). LH or LOADHIGH is the autoexec.bat equivalent to replace LOAD. There are tons of memory optimization guides out there. A number of them sugg...
by UPerschke
Sun 23 Sep, 2018 1:33 pm
Forum: General
Topic: [BUG] Crusader: No Remorse - teleporter does not work
Replies: 7
Views: 2123

Re: [BUG] Crusader: No Remorse - teleporter does not work

Which version did you use? Version 1.21 includes teleporter fixes.
by UPerschke
Thu 08 Mar, 2018 9:24 pm
Forum: General
Topic: PCem title image question
Replies: 5
Views: 1488

Re: PCem title image question

I suppose Norton Commander 1.0 :)
by UPerschke
Wed 13 Dec, 2017 7:47 pm
Forum: Development
Topic: Strange window behavior in wxWidgets Configuration manager window
Replies: 0
Views: 1009

Strange window behavior in wxWidgets Configuration manager window

Sorry to bring this up after V13 release - which is awesome by the way - but I didn't notice it earlier. Not sure if this is a generic wxWidgets issue or specific to PCem. I tried to identify and adjust related code sections but without success. Issue: If a config name exceeds the frame width it's i...
by UPerschke
Sat 01 Apr, 2017 4:34 pm
Forum: Development
Topic: [Bug] Show desktop in Windows 10 crashes the emulator
Replies: 17
Views: 3077

Re: [Bug] Show desktop in Windows 10 crashes the emulator

Same here, dedicated hardware (Core i5/GTX750Ti).
by UPerschke
Wed 29 Mar, 2017 6:14 pm
Forum: General
Topic: [BUG] NSSI hangs AMI WinBIOS 486 machine!
Replies: 40
Views: 5945

Re: [BUG] NSSI hangs AMI WinBIOS 486 machine!

Thanks for pointing that out. Strange. I can remember having seen a non-ES i486SX2-66 in at least one of those.
by UPerschke
Wed 29 Mar, 2017 5:18 am
Forum: General
Topic: [BUG] NSSI hangs AMI WinBIOS 486 machine!
Replies: 40
Views: 5945

Re: [BUG] NSSI hangs AMI WinBIOS 486 machine!

There was a commercial i486SX2-66, but I guess it was never widespread. Compaq used it in one of their Presarios: https://www.youtube.com/watch?v=Fvv77yhUrVA Check 11:00 where he shows the BIOS setup. And there were people who had trouble using certain stuff due to a missing FPU: http://damnsmalllin...
by UPerschke
Thu 09 Mar, 2017 6:27 am
Forum: General
Topic: [notabug] Blackthorne/Blackhawk slowdown
Replies: 1
Views: 657

Re: [notabug] Blackthorne/Blackhawk slowdown

IIRC this slowdown doesn't happen with sound disabled on real HW. Thus I suppose it's somehow related to FSB/ISA bus cycles.
I would need to re-check, but currently I only have >486 w. PCI soundcard(ALS4k) accessible so I can't test for a proper result.
by UPerschke
Thu 23 Feb, 2017 5:37 am
Forum: Development
Topic: 3DFX compatibility list
Replies: 92
Views: 45326

Re: 3DFX compatibility list

Thanks!
by UPerschke
Tue 21 Feb, 2017 9:26 pm
Forum: Development
Topic: 3DFX compatibility list
Replies: 92
Views: 45326

Re: 3DFX compatibility list

Sure. http://image.dosgamesarchive.com/games/tomb3dem.zip http://tombraiders.net/stella/files/gamefiles/TR1files/tr1_3dfx_demo.zip Actually the same file. This demo is available on numerous web sites. File name varies a lot, file date a bit. File size imho is a reliable parameter (2,310,970 bytes). ...
by UPerschke
Tue 21 Feb, 2017 7:56 pm
Forum: General
Topic: v12 released!
Replies: 34
Views: 10892

Re: v12 released!

Awesomesauce! Long awaited. Keep up the good work!
Wish I could contribute more atm. Working on it (my C/C++ is quite a bit rusty).
by UPerschke
Tue 21 Feb, 2017 7:42 pm
Forum: Development
Topic: 3DFX compatibility list
Replies: 92
Views: 45326

Re: 3DFX compatibility list

Tomb Raider 3DFX demo (tomb3dem.zip) crashes PCem V12 right after DOS/4GW + blank screen. Can't test with full version since I don't have it. Happens with both Voodoo interpreter and recompiler. I have searched related for a while now here and elsewhere, found nothing useful. Machine config is close...
by UPerschke
Mon 30 Jan, 2017 9:17 pm
Forum: General
Topic: Audio Lag with PCem 11 (was able to repro in latest source)
Replies: 50
Views: 9764

Re: Audio Lag with PCem 11 (was able to repro in latest source)

Those show delays here as well. CPU always at 100%. But: Same as before, slower CPU = less delay. 468SX16 --> None or at least close enough to none to notice any. Video speed seems to make a difference, but not sure without some screen + sound recordings. Tested with V11, debug build, release build ...
by UPerschke
Sun 29 Jan, 2017 9:01 pm
Forum: General
Topic: Audio Lag with PCem 11 (was able to repro in latest source)
Replies: 50
Views: 9764

Re: Audio Lag with PCem 11 (was able to repro in latest source)

Can you post your config for both latest and V11 please? There seems to be an odd correlation with emulated CPU speed. The higher it is the worse it gets. I set mine to 486SX20 and no delay with speaker nor SB, regardless if recompiler or interpreter. I did get noticayble delays with 486DX2/66, 486D...
by UPerschke
Sun 15 Jan, 2017 9:12 pm
Forum: Development
Topic: [Patch] OPL3 correction in Sound Blaster
Replies: 11
Views: 3143

Re: [Patch] OPL3 correction in Sound Blaster

They don't.
I/O addresses from 38Ah to 39Fh are reserved for future expansion.
Sound Blaster Series Programming Guide, bottom of Page 121.
Guide covers all including SB16 ASP.
by UPerschke
Sun 20 Nov, 2016 9:10 am
Forum: Development
Topic: error: 'fatal' undeclared
Replies: 5
Views: 1779

Re: error: 'fatal' undeclared

You're welcome :)
by UPerschke
Fri 18 Nov, 2016 7:19 pm
Forum: Development
Topic: error: 'fatal' undeclared
Replies: 5
Views: 1779

Re: error: 'fatal' undeclared

Read-Modify-Write, something like: add [rsi], 10

On older x86 cpus such instructions are slower than Read, Modify + Store blocks, but on nowadays it outcomes at same instruction speed.
RMS:

mov rax, 10
add rax, [rsp]
mov [rsp], rax
by UPerschke
Tue 15 Nov, 2016 10:14 pm
Forum: General
Topic: Can any of these controls work on Voodoo 2.
Replies: 23
Views: 5810

Re: Can any of these controls work on Voodoo 2.

Regardless the pointless tries to run Lego Creator within PCem: Why in first instance? There is an inoffical (but hard to find) WinXP patch and a reworked version released in 2008 to work in Win2K and above. Either way WinXP in VMware or native execution are possible, eliminating need for Low Level ...
by UPerschke
Sun 23 Oct, 2016 3:48 pm
Forum: Development
Topic: -funroll-loops resulting in 3-5% performance increase?
Replies: 4
Views: 2042

-funroll-loops resulting in 3-5% performance increase?

Seems to be the case at least in built from recent commit, seen in various benchmarks and fraps.
Can anyone confirm? GCC is 4.7.2.
by UPerschke
Mon 25 Jul, 2016 5:35 pm
Forum: General
Topic: S3 Virge drivers + Win 3.11 + High Res modes heavy glitch
Replies: 13
Views: 5551

Re: S3 Virge drivers + Win 3.11 + High Res modes heavy glitc

I figured it out. S3's drivers install an additional driver "Universal Draw Handler" (UDH.dll). Without VfW that driver is pointless and won't load. It's used for offscreen surfaces in VfW. I removed it in VGA mode, switched back to S3's 1024@16.7M via setup.exe and now it works. UDH was re-added af...