Search found 171 matches

by ecksemmess
Tue 31 Mar, 2020 3:22 am
Forum: Development
Topic: COVID-19 and v16
Replies: 6
Views: 1602

Re: COVID-19 and v16

Agreed with everyone else, the delay is 100% understandable and I think (hope) that everyone here is happy to be as patient as necessary. Thanks for the notice.
by ecksemmess
Tue 31 Mar, 2020 3:04 am
Forum: Development
Topic: v16 compatibility & bug list (WIP)
Replies: 27
Views: 1996

Re: v16 compatibility & bug list (WIP)

Sorry for asking this, Is the "Video BIOS messages not showing up on startup before BIOS POST screen" bug going to be fixed? No, because the fix will have a negative impact on compatibility in other areas and that's a problem I don't want to be trying to detangle right now. That's unfortunate, but ...
by ecksemmess
Thu 12 Mar, 2020 11:33 pm
Forum: General
Topic: Video BIOS messages not showing up on startup before BIOS POST screen
Replies: 9
Views: 4286

Re: Video BIOS messages not showing up on startup before BIOS POST screen

I've got a real Zappa with a Pentium 100 and it definitely always shows video POSTs normally on every video card I've tried, I think the Cirrus Logic cards are just funny that way. Anyway, this bug is also NOT machine-specific, which I guess I should have included in the list above. Every Pentium-cl...
by ecksemmess
Thu 12 Mar, 2020 10:56 pm
Forum: General
Topic: Video BIOS messages not showing up on startup before BIOS POST screen
Replies: 9
Views: 4286

Re: Video BIOS messages not showing up on startup before BIOS POST screen

I don't know offhand whether most video boards' POST screens are supposed to display for shorter times on faster CPUs, but in any case that's not relevant here; this is simply a bug. The video board POST is flashing by in a minuscule fraction of a second, far too dramatic of a change from expected b...
by ecksemmess
Thu 12 Mar, 2020 9:22 am
Forum: General
Topic: Video BIOS messages not showing up on startup before BIOS POST screen
Replies: 9
Views: 4286

Re: Video BIOS messages not showing up on startup before BIOS POST screen

Was this ever properly fixed? If not, is there any chance of getting it nipped in the bud before the v16 release? I can't quite tell how involved the fix would be, but not having the video board's POST sure is inconvenient sometimes.
by ecksemmess
Tue 10 Mar, 2020 7:17 am
Forum: General
Topic: Old Mac OSs on PCEM?
Replies: 7
Views: 1344

Re: Old Mac OSs on PCEM?

divingkatae is working on a PCem-inspired PPC Mac emulator though, motivated by frustrations of sheepshaver/PearPC stagnancy and how there's never focus on emulating the Rage GPUs (G3 iMacs had Rage Pros and Rage128s) https://github.com/dingusdev/dingusppc Wow, finally! Been waiting for a project l...
by ecksemmess
Fri 14 Feb, 2020 7:27 am
Forum: Patches
Topic: [Patch] CD-ROM model selection
Replies: 18
Views: 3792

Re: [Patch] CD-ROM model selection

Wow, fantastic work EluanCM! You're really on a roll lately with these patches. I'd love to see this approach adapted to HDDs as well.
by ecksemmess
Mon 03 Feb, 2020 12:24 am
Forum: Development
Topic: Dot-matrix printing in PCem
Replies: 14
Views: 2311

Re: Dot-matrix printing in PCem

As am I. Really excellent work! Hope to see this merged into mainline PCem sometime soon. :)
by ecksemmess
Mon 27 Jan, 2020 4:32 am
Forum: General
Topic: Any discussion on Slot 1 P3 Emulation?
Replies: 19
Views: 2376

Re: Any discussion on Slot 1 P3 Emulation?

For sure. Couldn't help grinning from ear to ear when I first saw those screenshots in the dev thread a couple weeks back.
by ecksemmess
Mon 27 Jan, 2020 12:48 am
Forum: General
Topic: Any discussion on Slot 1 P3 Emulation?
Replies: 19
Views: 2376

Re: Any discussion on Slot 1 P3 Emulation?

It shouldn't be that much more difficult to implement a rough model of P6 timing than it was for the K6. I simply haven't done it yet. Oh, that's great news! As you say, all those later generations of P6 wouldn't be practical on any present or near-future host machine, but something a bit more humb...
by ecksemmess
Sun 26 Jan, 2020 6:01 am
Forum: General
Topic: File x87_timings.h is missing
Replies: 4
Views: 737

Re: File x87_timings.h is missing

I didn't want to muck up the board with a separate new thread to say this, but since we've got a vaguely relevant one here let me just say, this is really awesome to see in PCem! Bit of a specialty/niche thing I suppose, but for those few of us who wanted it, this is a huge step forward and very muc...
by ecksemmess
Sun 26 Jan, 2020 5:52 am
Forum: General
Topic: Any discussion on Slot 1 P3 Emulation?
Replies: 19
Views: 2376

Re: Any discussion on Slot 1 P3 Emulation?

The question of P6 microarchitecture emulation (i.e. Pentium Pro, Pentium II, Pentium III) comes up a lot on these forums and Sarah has patiently explained numerous times why it's likely never going to be feasible, at least not without an unthinkably drastic change to the entire structure of how PCe...
by ecksemmess
Sun 26 Jan, 2020 5:41 am
Forum: General
Topic: Packard Bell PB570/Hillary Board bios sees all CPUs as "100MHz"
Replies: 1
Views: 360

Re: Packard Bell PB570/Hillary Board bios sees all CPUs as "100MHz"

Advanced/ZP does the same thing. Not sure if the PB570 is doing it for the same reasons, but in the case of the ZP, I looked into it a while back and it turned out to just be a motherboard DIP switch setting or something like that--the idea being, if you wanted the real machine to work properly, you...
by ecksemmess
Tue 07 Jan, 2020 9:20 am
Forum: Development
Topic: Bitbucket deleting all Mercurial repositories on June 1, 2020?
Replies: 14
Views: 2978

Re: Bitbucket deleting all Mercurial repositories on June 1, 2020?

I don't like the whole git pushing either and I use git and Github for my code and I find version control as some complicated suffering with web-based repositories getting random functionality regressions. Dropping a post with a diff here feels comfortable enough This is how I feel as well, I'm def...
by ecksemmess
Sun 05 Jan, 2020 9:09 am
Forum: Development
Topic: Bitbucket deleting all Mercurial repositories on June 1, 2020?
Replies: 14
Views: 2978

Re: Bitbucket deleting all Mercurial repositories on June 1, 2020?

Yeah I hadn't noticed either until just now. Methinks there will be some rude awakenings in store for a lot of developers on that day, given how little they're publicizing this... I agree that switching to Git is likely to be the most palatable way to handle it, but don't have the experience to know...
by ecksemmess
Sun 05 Jan, 2020 6:47 am
Forum: Development
Topic: Bitbucket deleting all Mercurial repositories on June 1, 2020?
Replies: 14
Views: 2978

Bitbucket deleting all Mercurial repositories on June 1, 2020?

I see from https://bitbucket.org/blog/sunsetting-mercurial-support-in-bitbucket that Bitbucket will be deleting all Mercurial repositories (presumably including PCem) on June 1, 2020, and will only be supporting Git thereafter. I'm sure Sarah has been totally on top of this, but can anyone say what ...
by ecksemmess
Wed 08 May, 2019 5:53 am
Forum: General
Topic: [Bug] Window size changes when leaving fullscreen
Replies: 7
Views: 4099

Re: [Bug] Window size changes when leaving fullscreen

I hate to even ask, but is there any chance of getting this fixed for v15? If not, hopefully v16? I've found it to be surprisingly intrusive and distracting in certain use cases.
by ecksemmess
Wed 08 May, 2019 4:12 am
Forum: General
Topic: Video BIOS messages not showing up on startup before BIOS POST screen
Replies: 9
Views: 4286

Re: Video BIOS messages not showing up on startup before BIOS POST screen

I can confirm this problem (in stock v14, can't test svn at the moment). Definitely a bummer, would love to see this fixed for the v15 release! To shed further light on how to reproduce this: only Pentium-class machines are affected. To reproduce, create a setup with any Pentium-class board (I've te...
by ecksemmess
Mon 03 Sep, 2018 8:52 pm
Forum: General
Topic: PCem and laptop i7 8550u CPU
Replies: 6
Views: 3228

Re: PCem and laptop i7 8550u CPU

FYI, I've been using PCem on an Ivy Bridge-era laptop for years, with pretty good results. I can maintain near-100% emulation for anything up to a Pentium-133 or so, though it does of course depend heavily on what the emulated system is doing. My laptop's CPU is an i7-3632QM, base speed 2.2GHz and t...
by ecksemmess
Mon 03 Sep, 2018 8:43 pm
Forum: General
Topic: [REQUEST] ATI Graphics Ultra Pro
Replies: 13
Views: 6133

Re: [REQUEST] ATI Graphics Ultra Pro

From what I understand, v15 is supposed to have a totally redone recompiler, which is hardly "bugfixes"! I'm not privy to any inside information about what will be in it, but I have a feeling a lot of people will be pleasantly surprised.
by ecksemmess
Wed 29 Aug, 2018 2:57 am
Forum: General
Topic: [REQUEST] ATI Graphics Ultra Pro
Replies: 13
Views: 6133

Re: [REQUEST] ATI Graphics Ultra Pro

Seconding leilei. It's an incredibly inefficient use of valuable time to have Sarah (or anyone else who's very deep in the PCem codebase) attending to requests that actually don't require much special expertise to carry out. The ATI Graphics Ultra Pro request is maybe not the best example (I'm not s...
by ecksemmess
Sun 06 May, 2018 7:10 am
Forum: Development
Topic: Speed improvement
Replies: 3
Views: 3011

Re: Speed improvement

PCem's CPU emulation is powered by an interpreter ( https://en.wikipedia.org/wiki/Interpreter_(computing) ) and a dynarec ( https://en.wikipedia.org/wiki/Dynamic_recompilation ). The pre-486-class systems use the interpreter, the Pentium-class systems use the dynarec, and the 486-class systems allow...
by ecksemmess
Wed 25 Apr, 2018 6:51 am
Forum: Patches
Topic: [Patch] Cleanup
Replies: 2
Views: 2546

Re: [Patch] Cleanup

endeavor/1006cb0_.bi0 and revenge/1009af2_.bi0 are absolutely included in the code, in mem.c, and always have been. I'd suggest double-checking that again; hopefully you didn't remove any references to those, as they are entirely necessary to the basic functionality of the Endeavor and Revenge. pc15...
by ecksemmess
Mon 23 Apr, 2018 9:14 am
Forum: General
Topic: Ryzen
Replies: 11
Views: 5565

Re: Ryzen

I can confirm that the Windows 8.1 patches for Spectre/Meltdown have had no noticeable impact on PCem performance on my Ivy Bridge-based system.
by ecksemmess
Mon 16 Apr, 2018 4:19 am
Forum: General
Topic: [Bug] Window size changes when leaving fullscreen
Replies: 7
Views: 4099

Re: [Bug] Window size changes when leaving fullscreen

Hey, thanks for doing that testing. I can confirm your observations about the second way to trigger the bug. Just to clarify for all reading this: as you'll notice from the reports above, the fullscreen toggle trigger that I reported in the OP does occur when Video -> Resolution is set to "Custom", ...
by ecksemmess
Sat 14 Apr, 2018 6:31 pm
Forum: General
Topic: [Bug] Window size changes when leaving fullscreen
Replies: 7
Views: 4099

Re: [Bug] Window size changes when leaving fullscreen

Can anyone reproduce this? It should only take a moment to check. Not the end of the world, but it can get unwieldy as the window just grows and grows when there's a need to toggle back and forth several times between windowed and fullscreen. It would be helpful to know if this is specific to my set...
by ecksemmess
Wed 28 Mar, 2018 7:11 pm
Forum: General
Topic: Configuration errors on model 70 type 4
Replies: 9
Views: 3483

Re: Configuration errors on model 70 type 4

That's good to know. It'd be a nice addition, understandable that it wouldn't be a priority of course. Maybe someday... :)
by ecksemmess
Tue 27 Mar, 2018 10:29 pm
Forum: General
Topic: Configuration errors on model 70 type 4
Replies: 9
Views: 3483

Re: Configuration errors on model 70 type 4

Bit-accurate x87 emulation requires 80-bit floating point operations, as that's what x87 uses internally. If the host CPU's FPU was used to do this, this will destroy any chance of porting PCem to any architecture other than x86, because all other modern architectures support 64-bit as a maximum. T...
by ecksemmess
Sun 25 Mar, 2018 9:47 pm
Forum: General
Topic: [Request] Improve Hard Drives timings
Replies: 3
Views: 2276

Re: [Request] Improve Hard Drives timings

It's not just about accuracy/authenticity (though IMO that's reason enough to care about this). I definitely have run into various early-80s era software that throws unexpected behavior in PCem under certain circumstances which appears to be due to the lack of expected HDD access delays. Can't remem...