Search found 171 matches

by ecksemmess
Tue 20 Jun, 2017 10:59 am
Forum: Merged patches
Topic: [Patch] Undocumented instructions and processor accuracy
Replies: 27
Views: 11719

Re: [Patch] Undocumented instructions and processor accuracy

This additional patch does the following - Raise exception #6 when attempt to execute opcode 0xC6/1~0xC6/7 and 0xC7/1~0xC7/7 on 286+ processors. - Raise exception #13 when attempt to write code segment in protected mode. - 286 LOADALL instruction does not alter PE bit in MSW register when in protec...
by ecksemmess
Mon 05 Jun, 2017 8:17 pm
Forum: Development
Topic: [Bug] Warcraft 2 displays nothing
Replies: 35
Views: 10479

Re: [Bug] Warcraft 2 displays nothing

Yeah, let's not go down this road. We've got a good thing going here, and it really shouldn't be too much to ask for everyone to respect the basic ground rules and refrain from engaging in shady behavior. Let's not fuck this up.
by ecksemmess
Mon 05 Jun, 2017 7:39 pm
Forum: Development
Topic: [Patch] CGA monochrome & selectable mono display
Replies: 46
Views: 15152

Re: [Patch] CGA monochrome & selectable mono display

The difference between a monochrome EGA or VGA monitor and a color RGB one should be fairly self-explanatory, no? ;)

Seriously, monochrome EGA and VGA monitors weren't very common, but they were a thing. I just thought it'd be fun to extend the monochrome CGA support to cover them.
by ecksemmess
Mon 05 Jun, 2017 7:35 pm
Forum: Development
Topic: [Bug] Warcraft 2 displays nothing
Replies: 35
Views: 10479

Re: [Bug] Warcraft 2 displays nothing

See, questions like this: Ok, then what if someone releases nightly builds of PCem outside this site? You can't do anything to prevent so. Come on, this is just silly. Sarah is legally responsible for what's on her own site, not for versions of her emulator that other people put up on other sites. I...
by ecksemmess
Mon 05 Jun, 2017 7:32 pm
Forum: Development
Topic: [Bug] Warcraft 2 displays nothing
Replies: 35
Views: 10479

Re: [Bug] Warcraft 2 displays nothing

I've got to say, it does make good sense to have a firm policy about not hosting any copyrighted material here. Lots of sites draw a firm line on that; this shouldn't be controversial. Can we stop wasting time with silly arguments about it? There are lots of other places to vent disdainfully about c...
by ecksemmess
Mon 05 Jun, 2017 1:29 pm
Forum: Development
Topic: [Patch] Add NukedOPL
Replies: 20
Views: 6590

Re: [Patch] Add NukedOPL

Depending on your host machine and guest configuration, it's possible to get a very significant speed hit from NukedOPL. The accuracy is excellent, but of course that comes at a price. Battler's patch makes NukedOPL the default but leaves open the option to use the previous, less-accurate OPL emulat...
by ecksemmess
Mon 05 Jun, 2017 3:45 am
Forum: Development
Topic: [Bug] Warcraft 2 displays nothing
Replies: 35
Views: 10479

Re: [Bug] Warcraft 2 displays nothing

Okay, that's what I thought. So the conclusions upthread about this not being a PCem bug were mistaken, then.
by ecksemmess
Mon 05 Jun, 2017 3:35 am
Forum: Development
Topic: [Patch] Add NukedOPL
Replies: 20
Views: 6590

Re: [Patch] Add NukedOPL

Good thinking including that option to switch back to the original OPL3 emulation, with NukedOPL as the default. Last I checked, the speed hit was considerable enough to be an issue when emulating faster machines, but NukedOPL's improvements are major enough to demand its use in all other circumstan...
by ecksemmess
Mon 05 Jun, 2017 3:25 am
Forum: Development
Topic: [Patch] CGA monochrome & selectable mono display
Replies: 46
Views: 15152

Re: [Patch] CGA monochrome & selectable mono display

Yeah, this is pitch-perfect. Thanks to all involved! It would also be really cool to be able to add support for monochrome EGA and VGA monitors, though I'm not sure how much work would be involved in getting that working, realistically speaking. Does anyone know?
by ecksemmess
Mon 05 Jun, 2017 3:20 am
Forum: Development
Topic: [Bug] Warcraft 2 displays nothing
Replies: 35
Views: 10479

Re: [Bug] Warcraft 2 displays nothing

I'm a bit confused--on real hardware, doesn't Warcraft 2 run just fine with cards like the ATI Graphics Pro Turbo and Phoenix S3 Trio64? I could swear I remember playing it on a pretty wide variety of systems of that vintage, back in the day. Am I misremembering that, or am I misunderstanding what t...
by ecksemmess
Tue 30 May, 2017 3:41 pm
Forum: Development
Topic: [Patch] CGA monochrome & selectable mono display
Replies: 46
Views: 15152

Re: [Patch] CGA monochrome & selectable mono display

Sounds good. He did a fair amount of research on those colors and they're probably about as good as we're ever going to get without going much more in-depth on emulating different individual monitors etc. Well done!
by ecksemmess
Tue 30 May, 2017 11:40 am
Forum: Development
Topic: [Patch] CGA monochrome & selectable mono display
Replies: 46
Views: 15152

Re: [Patch] CGA monochrome & selectable mono display

Wow, this is fantastic to see! Great work, basic2004. I've been looking forward to something like this for years! Hopefully it won't be too difficult to squash the HGC-related bugs that appear to have been introduced by revs 733/734. I see this was ported from 86Box. Battler, can you say anything ab...
by ecksemmess
Wed 24 May, 2017 7:12 am
Forum: General
Topic: [BUG] Windows 95 desktop corruption with S3 Trio64
Replies: 17
Views: 5193

Re: [BUG] Windows 95 desktop corruption with S3 Trio64

I guess we have to wait for the S3 Trio64 emulation to be complete. I'm a bit confused about this comment. I understand that the Number Nine Trio64 emulation is incomplete in various ways, particularly insofar as that board does differ in some ways from a standard Trio64, but what about the Phoenix...
by ecksemmess
Sat 13 May, 2017 3:09 am
Forum: Development
Topic: [Patch] EuroPC CPU fix
Replies: 1
Views: 1030

[Patch] EuroPC CPU fix

The Schneider EuroPC uses a Siemens 8088 with some unusual clock speed options. It certainly does not support an 8086. I've corrected the CPU options in this patch, as well as the name of the machine as displayed in the list.
by ecksemmess
Fri 12 May, 2017 6:35 pm
Forum: General
Topic: Feature request: revamping config files
Replies: 53
Views: 15588

Re: Feature request: revamping config files

This is great, thanks Sarah! :)
by ecksemmess
Mon 10 Apr, 2017 7:50 am
Forum: Development
Topic: PCem has bug in ATA HDD geometry
Replies: 12
Views: 3671

Re: PCem has bug in ATA HDD geometry

You're not seriously asking Battler to go file the bug report, are you? What possible reason could you have for not just doing it yourself?
by ecksemmess
Mon 10 Apr, 2017 7:37 am
Forum: General
Topic: Feature request: revamping config files
Replies: 53
Views: 15588

Re: Feature request: revamping config files

Sorry, I wasn't clear. I know about the --config switch. I was just saying that, because we've got that switch, the proposed change wouldn't prevent people from booting straightaway at launch if that's what they want to do. I don't really see why a selector window or "home screen" of some kind could...
by ecksemmess
Sun 09 Apr, 2017 8:34 am
Forum: General
Topic: Feature request: revamping config files
Replies: 53
Views: 15588

Re: Feature request: revamping config files

Yeah, I've got to say--I've always found it a little odd the way PCem starts booting a machine immediately upon launch. Given that most users will be juggling multiple emulated machines, it would really make a lot more sense to have a config selector come up first as the default behavior. The abilit...
by ecksemmess
Thu 06 Apr, 2017 11:35 pm
Forum: Development
Topic: ST-412/ST-506/ESDI hard drive emulation?
Replies: 51
Views: 17973

Re: ST-412/ST-506/ESDI hard drive emulation?

With the latest commits that add ESDI emulation (not to mention the MCA support and all of the other goodies), it looks like my original wishlist in this thread has just about been fulfilled. I never would've dared to hope it would have all happened so soon! :) Just a couple of quick questions: firs...
by ecksemmess
Mon 27 Mar, 2017 3:57 pm
Forum: General
Topic: [BUG] NSSI hangs AMI WinBIOS 486 machine!
Replies: 40
Views: 11385

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

SarahWalker wrote:Indeed. You can pretend that 'Internal IDE controller' says 'Generic IDE controller' if it makes you feel any better.
Perhaps it actually should be changed to "Generic IDE controller" to avoid any further confusion along these lines?
by ecksemmess
Mon 27 Mar, 2017 3:45 pm
Forum: General
Topic: DOSBox vs. PCem – What plays DOS games better/more accurate?
Replies: 7
Views: 9525

Re: DOSBox vs. PCem – What plays DOS games better/more accurate?

Good answer, leilei. I agree with most of what you said there. PCem's good, but it's nowhere near "most accurate pc emulator" as someone has claimed many times before (and neither is DOSBox). I don't know about this--are you saying that there's no one PC emulator that stands head and shoulders above...
by ecksemmess
Tue 21 Mar, 2017 6:45 am
Forum: Development
Topic: Introduction && issue with Floppy
Replies: 13
Views: 4893

Re: Introduction && issue with Floppy

On video card support: Minix used a horrible (but effective) trick to speed up scrolling the screen. Instead of actually moving data around (copying all lines "up" one line at a time), we used the "video RAM start address" register to "move" our viewport window around, as the video memory usually h...
by ecksemmess
Mon 20 Mar, 2017 11:06 am
Forum: Development
Topic: ST-412/ST-506/ESDI hard drive emulation?
Replies: 51
Views: 17973

Re: ST-412/ST-506/ESDI hard drive emulation?

Agreed. These are fantastic, and much appreciated. Whenever you (or any other contributors) do add another controller, I'd say a late-80s ESDI board would be perfect, to allow for larger drives and faster/easier interfacing on machines like the Deskpro 386. But with these three MFM controllers, we'r...
by ecksemmess
Sat 18 Mar, 2017 6:50 pm
Forum: Development
Topic: ST-412/ST-506/ESDI hard drive emulation?
Replies: 51
Views: 17973

Re: ST-412/ST-506/ESDI hard drive emulation?

Oh, awesome! This is the Xebec 1210 that came standard with the original XT, right? Hadn't realized you were working on it, thank you for this!
by ecksemmess
Fri 17 Mar, 2017 11:41 pm
Forum: Development
Topic: ST-412/ST-506/ESDI hard drive emulation?
Replies: 51
Views: 17973

Re: ST-412/ST-506/ESDI hard drive emulation?

Oh, hah--that's what I get for not proofreading! I meant AT clones of course, not XT clones. So this board does seem to be compatible with the various non-IBM-brand AT BIOSes, then? There was some doubt about that on some other forums. A couple of people seemed to think it had some dependency on IBM...
by ecksemmess
Fri 17 Mar, 2017 5:43 am
Forum: General
Topic: PC-DOS 1.10 and PCem v12
Replies: 64
Views: 17911

Re: PC-DOS 1.10 and PCem v12

- mal.sh: PCem v10.1 had less accurate floppy emulation that did not check for the validity of parameters (ie. if they match the currently inserted floppy) at all when formatting. Evidently PC-DOS 1.10 FORMAT.COM does not do something right when formatting the floppy, therefore getting an error in ...
by ecksemmess
Fri 17 Mar, 2017 5:28 am
Forum: Development
Topic: ST-412/ST-506/ESDI hard drive emulation?
Replies: 51
Views: 17973

Re: ST-412/ST-506/ESDI hard drive emulation?

One other question about the AT Fixed Disk Adapter: it doesn't seem to have any onboard ROM, does it? As such, I assume the standard AT ROM BIOS includes extensions that handle everything that an MFM card's own onboard ROM would typically handle, right? But if that's the case, how is it that the emu...
by ecksemmess
Thu 16 Mar, 2017 1:12 am
Forum: Development
Topic: Intel Advanced/EV -> Advanced/ZP
Replies: 5
Views: 2980

Re: Intel Advanced/EV -> Advanced/ZP

IIRC, Battler has already written up an implementation of the NS PC87306, as well as a number of other Super I/O chips. He was focusing pretty heavily on those for a while. Unless there are some unresolved issues that he knows about, it should be easy enough for him to submit them to Sarah and get t...
by ecksemmess
Wed 15 Mar, 2017 11:49 pm
Forum: Development
Topic: ST-412/ST-506/ESDI hard drive emulation?
Replies: 51
Views: 17973

Re: ST-412/ST-506/ESDI hard drive emulation?

Whoa, that was fast! Sarah, you are awesome. Looks like a pitch-perfect implementation from what I see so far. :)

BTW, did you base this on the first or second-gen version?
by ecksemmess
Mon 13 Mar, 2017 6:41 am
Forum: Development
Topic: Intel Advanced/EV -> Advanced/ZP
Replies: 5
Views: 2980

Re: Intel Advanced/EV -> Advanced/ZP

This is an interesting observation, and should probably be looked into. All I would add is that, if the Advanced/ZP is added (which probably is worth doing), the Advanced/EV needs to be retained as well, as many of us have made extensive use of it in our configurations. I have an absolutely massive ...