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Re: [Linux/WSL] Host to guest mapper

Although the tool was developed on and for Linux and it uses a lot of "non portable linux functions" like mmap, fallocate or fstatfs, so compiling with cygwin/mingw isn't unfortunately an option, the tool runs flawlessly with WSL (Windows subsystem for Linux, tested with debian, but should work with …

Re: Emulators with integrated debugger?

I played around with QEMU/Bochs & GDB remote debugging, using the frontends Nemiver & Gede (Linux) and gdb terminal .. as some mentioned before, debugging of i8086 real mode code is not really possible (from my limited experiences), at least not with the frontends (from gdb terminal okay) ... of …

Re: [MAME] Mounting disk images?

okay, finally I got it and I'm very impressed about the configuration options .. (for "my" machine "ct486"): first list all device slots: mame ct486 -listslots it shows me "board3:ide:ide:0" and "board3:ide:ide:1" that can be connect to "cdrom" or "hdd", so I added (command line) "-board3:ide:ide:1 …

Re: [MAME] Mounting disk images?

the only system I got running was "ct486" (PC/AT 486 with CS4031 chipset, Linux/MAME 0.229) ... starting from command line with -hard1 [image] ... -flop1 option is working too ... unfortunately I didn't find any MAME howtos about PC Emulation & possible command line parameters ... in MAME UI it …

[MAME] Mounting disk images?

can anyone tell me, if it is possible (and how), to mount more than one hdd disk image with MAME? there is an option "-harddisk" or "-hard1" that works, but it seems there is no option for mounting more than one image, "hard2" is unknown... the "-debug" window allows only mounting of one hdd image …

Re: [Linux] Host to guest mapper

Good news! Tested it with Windows 98. If you change the properties of the drive, which is associated with the swap42 image, to "removable" (hardware manager) Windows detects filesystem changes by itself so it's possible to do a rescan even for Windows 98 as guest OS (if windows monitors it by volume …

[Linux/WSL] Host to guest mapper

Hi, creating images, mounting them and file sharing can be annoying, especially with MSDOS as guest OS without network sharing, so I coded this little tool to map a host directory to a raw hdd image, which could be refreshed from inside the guest, so cross development and testing is possible like …

Re: Emulation of x86 PCs of former East Germany?

How about https://a7100emulation.hpage.com/neuigkeiten.html ? Not the a 7150 maybe, but the older and more idiosyncratic model I guess. https://a7100-emulation.gitlab.io/html/news.html wow, that's cool ! and from the screenshots - gfx power :) ... it's itching in the fingers to do some demo coding …

Re: Clash of the emulators ...

Selling points? Hmm I'd think in many cases it's just authors "scratching their own itch" and perhaps trying to learn something useful while they're at it, more than anything else. That's why the quotation marks ;) .. was just a phrase for advantages and pro & cons ... There was already some …

Clash of the emulators ...

... also know as "xyz vs .." I'm just curious, what are the "selling points" of the different emulators here ... I use (of course ;)) DOSBox (easy to setup & compatible, mainly for coding & instant testing) and PCem (especially for testing when it comes to runnability on "real" hardware, PCem seems …

Re: CPU test program for 8086 emulator

mr.cat wrote on 2021-03-16, 18:13: 👍 Yeah, that 8088MPH in particular will blow your mind...it's meant to be run only in the original IBM hardware, so no easy task for emulators. seems that 86box finally made it ... https://www.youtube.com/watch?v=CWDRSx1LYTU

Re: Emulators with integrated debugger?

Did you see the date on that Insight page? Ouch, that is old.. yes, unfortunately ... But I guess we'll soon find out how viable a choice it is for i286 work, if TheMechanist gets the setup going for the next blockbuster demo ;) lol .. atm just little intros since I'm an one man show - without …

Re: CPU test program for 8086 emulator

Wow, that's a pretty cool project, I also always wanted to code some kind of emulator ... if you want to test the (graphics) compatibility of your emulator someday, try some of these releases :) http://www.pouet.net/prod.php?which=65371 http://www.pouet.net/party.php?which=204&when=1996 http://www. …

Re: XTulator (yet another PC emulator)

okay ... I set BUFFERS to max (99,8, MSDOS 5.0), that took about 80kb of RAM - and like you said - the disc content wasn't updated after resetting the image (this didn't happen here before without BUFFERS directive in config.sys) ... BUT - function 0xD does the job! After calling DOS shows the right …

Re: XTulator (yet another PC emulator)

Well, it's showing itself when mounting an image(like in Dosbox/UniPCemu), then using an image editor to change directory contents etc.). When you perform dir after that, MS-DOS still shows what it was before the disk image edit(or it even being corrupted from the MS-DOS point of view at least). …

Re: XTulator (yet another PC emulator)

Like I said, it's the MS-DOS system that caches the entire FAT that the emulator would provide into it's own data structures, just like normal hard disks. ... Even if you would update the RAM disk's FAT to reflect those changes, MS-DOS would fully ignore them since it will only use it's own copy of …

Re: Emulators with integrated debugger?

You can use `set architecture i8086` to tell GDB that the x86 CPU is in real-mode. The auto default could be buggy either due to gdbstub or bugs in GDB itself. The x86 16:16 real-mode is not very well supported and maintained in GDB overall. Uh, that could be a show stopper for me ... maybe this …

Re: XTulator (yet another PC emulator)

Hmmm... Good idea though. UniPCemu already has a disassembler and 5 breakpoints supported... It also currently supports dumping memory to a file(which you then can use with your favourite hex viewer to view what's in memory). Should I also add a memory viewer inside the app itself? Or would the …

Re: XTulator (yet another PC emulator)

If you haven't looked at QEMU, then perhaps its scary story of "very user unfriendliness" had fogged your thoughts ... lol The concept of simple block layer for virtual FAT that reflects the content of host into guest had long been available from QEMU since version 1.0, more than 10 years ago. The …

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