Questions tagged [emulation]

Processes and software for emulating retro hardware (e.g. MAME, QEMU). NOT EVERY EMULATION QUESTION IS ON-TOPIC; SEE TAG WIKI.

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10 votes
2 answers
426 views

1984 accounting software running in VirtualBox fails to print property to an LPT passthrough, but other software seems fine

My family still runs their business with an accounting package from 1984. The computer running it is old enough to drink. I’m trying to move it to a virtual machine. I’ve purchased a System 76 ...
3 votes
1 answer
668 views

What do the pins D0-D7 on the Intel 8080 exactly signify?

I am currently trying to create a FPGA styled simulator of the 8080 in C. I have a couple of questions regarding the D0-D7 pins. As far as I can see the D0-D7 lines are used in order to store data (a ...
21 votes
6 answers
7k views

How can I emulate MS-DOS on OS X?

I am looking for a emulator for MS-DOS for OS X to run old games on. Are there any free emulators for MS-DOS that run on an Apple machine with OS X?
1 vote
0 answers
187 views

Windows 3.11 in DOSBox-X says that “Your network adapter MS$NE2CLONE is not working properly” [closed]

I had networking working on Windows 3.11 previously, now I am getting the error "Your network adapter MS$NE2CLONE is not working properly". I tried reinstalling all the files, changing ...
19 votes
4 answers
9k views

How to keep running DOS 16 bit applications when Windows 11 drops NTVDM

I have a business client who runs an old DOS 16-bit accounting and point-of-sale system in his industrial supply warehouse. He does not want to switch from the legacy DOS application since all of his ...
3 votes
1 answer
689 views

How to make an audio CD for a(n emulated) Playstation? [closed]

I can't manage to burn a working audio CD-R for my (both emulated and non-emulated) PlayStation. I'd like to get instructions on how to do it in a GNU/Linux environment (also without using a real CD-R)...
6 votes
1 answer
819 views

What is the file that VICE refers to as dos1541?

VICE needs a file called dos1541 if you want to emulate the 1541 disk drive. What does that file contain, exactly? The 1541 seems to have two ROMs: a DOS and a KERNAL. But if I take the image of the ...
2 votes
3 answers
564 views

Z80 to 68000 translator for CP/M

CP/M was mostly portable across systems but most of them were z80 based. It was ported to 8086, 68000 and maybe more but without binary compatibility. No z80 systems that wanted CP/M compatibility ...
14 votes
9 answers
2k views

Is there a C64(or any other) emulation that can be run in terminal?

I was looking for a C64 type computer that can be used in the terminal. Can I code one or is there one on the interwebs?
6 votes
0 answers
215 views

Where can I find information on old Kontron emulators?

Way back in the mid-80s, I worked as a programmer for the Apple II family, Commodore and Atari machines. I remember programming them using a big intimidating box branded Kontron stacked on top of my ...
49 votes
2 answers
4k views

Did Windows NT 4 emulate x86 on non-Intel platforms?

I've been trying to find more information about non-Intel versions of Windows NT regarding x86 emulation but found very little about it. There is one sentence about it in the Wikipedia page but the ...
13 votes
3 answers
5k views

Is there a cycle-exact 8086 emulator?

I'm trying to emulate programs from the 80s, but with an accurate clock-speed¹ (pretending its an 8086). Meaning that if a 8086 would take X ms/opcode, the emulator should take X ms (+- a bit of ...
6 votes
3 answers
741 views

How do I make an Apple II disk image with the sectors in physical order?

As far as I understand: a .do or .dsk file extension indicates that the sectors in a disk image are in AppleDOS order (i.e. the physical sectors are in order 0, 13, 11, 9 etc). a .po file extension ...
9 votes
1 answer
614 views

TI-83 Series Graphing Calculator Emulator

Back in middle school I set up a Windows/DOS TI-83 calculator emulator for some of my teachers. I can't for the life of me remember the name, but I'm looking for a Mac TI-83 emulator (or any TI-8x ...
19 votes
4 answers
1k views

Is there a line printer sound simulator?

To improve "authenticity" of a mainframe simulator and for an additional nostalgic effect, I'd like to add sounds of a line printer to it. They should be similar enough to the original sounds for ...
19 votes
7 answers
8k views

Are there any good, non-abandoned PC emulators?

Mission: I'm trying to simulate a classic ~286/386/486/Pentium inside my modern PC (running Windows 10) in the most authentic way possible. Just a quick note to say that I (Sarah Walker) have decided ...
4 votes
2 answers
789 views

How do I navigate the boot menu in later model Spectrum emulators?

35 years ago I had an original 48K Sinclair ZX Spectrum. I never had any of the Plus or 128K models and practically never even touched one as I moved onto the Amiga quite early. I'm now playing with ...
5 votes
2 answers
703 views

BASIC line input buffer location on ZX Spectrum

I'm currently writing a ZX Spectrum emulator (I know there are plenty, but it's a project). I'm having an issue where it keeps repeating the last key press even though I know the port lines have been ...
3 votes
1 answer
435 views

How does one customize the 3270 terminal login screen in VM/370?

When using a pre-built system image such as the "VM/370 sixpack" or "MVS Tur(n)key" under Hercules, when a user connects a 3270 terminal, a login screen comes up with a banned ...
4 votes
2 answers
432 views

Looking for a retro chip emulator for building a custom system from scratch [closed]

TL;DR: I want to do this but entirely in software on my Linux laptop. Long version: In Ben Eater's "Hello World on a 6502", Ben shows how to build a computer from scratch using individual ...
9 votes
4 answers
1k views

Testing "8-bit readiness" with an emulator or pre-packaged kit

I'm working on a project that intends to implement a dynamically typed language on 8-bit systems. (That is, a CPU with 16-bit pointers and a maximum of 64 kB of RAM. Some language tricks are involved, ...
2 votes
1 answer
304 views

How to fix the inaccurate mouse movement in the Eye of the Beholder for C64 under VICE? [closed]

I'm trying to play the C64 and C128 versions of the Eye of the Beholder by using the VICE emulator on Windows 11, but the mouse movement is too inaccurate and it constantly flutters on a moving ...
8 votes
2 answers
3k views

Can the Gotek floppy emulator be made to work with classic Macs?

The Gotek floppy emulators are really popular in the retro scene. I have one modified (firmware update) to work with my Amiga 500. Can one be made to work with any of the classic line of Macintosh ...
1 vote
1 answer
396 views

is there a tool to convert .dsk to a .rom file? [closed]

So over the span of about 2 months I've been trying to get a USB drive together with all the tools to run an old game my uncle made. It was make for a really old computer(I think like a TRS-80 or CoCo ...
7 votes
1 answer
2k views

What MIDI sound font does mGBA use?

There is the mGBA Game Boy Advance emulator. I wonder which MIDI sound font it uses. I think the original Nintendo GBA sound font is copyrighted. So if it uses an open source sound font all music will ...
3 votes
2 answers
4k views

No sound on SheepShaver for Windows 10 [closed]

I am running Mac OS 9 through SheepShaver on Windows 10, and I can't get sound to work. I am using an Old World ROM because the New World ROM doesn't work, it causes SheepShaver to crash. I tried to ...
6 votes
4 answers
2k views

How was it possible to run IBM mainframe software in emulation on HP?

... At least, without getting sued into the ground? According to one of the answers to What was the most critical supporting software for COBOL on IBM mainframes? We installed a new HP replacing an ...
14 votes
1 answer
4k views

How much PlayStation 1 hardware in the PS2?

In my opinion, the PS2 remains the best way to experience original PlayStation 1 games, short of an actual PS1 console. The ability of the PS2 to mimic/emulate the PS1 hardware seems really good, ...
3 votes
0 answers
193 views

Can MAME save to cassette tape formats other than WAV? [closed]

MAME seems to be extremely unintuitive to use and extremely poorly documented. But it supports a ton of machines, some of which I haven't found other emulators for, so I've been persevering with it ...
7 votes
1 answer
481 views

Software that emulated VGA high res mode on an EGA board

I have this very faint recollection from my late elementary school days back in the end of 1980s of a very specific piece of MS-DOS software that claimed to do what was an incredible thing to an ...
17 votes
3 answers
4k views

Status of brute forcing all possible memory states of a video game [closed]

For an old video game that has a small enough memory footprint, it should be possible on exponentially larger modern systems to create a graph of all possible states of memory and the inputs that ...
4 votes
2 answers
535 views

Do any of the open source Sinclair ZX Spectrum emulators support both TR-DOS and 3DOS?

The number of Spectrum emulators has been growing for decades now so there's quite a lot for different platforms and written in different languages. I'm interested in learning about two of the disk ...
11 votes
2 answers
1k views

Why does the .z80 emulator-snapshot format have separate fields for the 8-bit refresh register and bit 7 of R?

I've been looking at the .z80 file format for Sinclair ZX Spectrum games. Most docs discussing the format include pretty much this wording: Offset Length Description -------------------------...
77 votes
2 answers
16k views

Why does the infamous "ENGAGERIDLEYMOTHERFUCKER" Metroid password break NES emulators?

For those who are unfamiliar, the original NES Metroid was one of many NES games to use passwords as a means to save progress. Later, this password system was leveraged to create unusual effects in ...
15 votes
3 answers
2k views

Running CP/M on my own Intel 8080 emulator

I recently finished writing an emulator for the Intel 8080, having passed all of the usual test suites, and wanted to try running an actual OS on it (such as CP/M). I'm aware that I would have to ...
34 votes
4 answers
16k views

What exactly is a cycle-accurate emulator?

Emulators such as Higan are cycle-accurate and thus have full compatibility with all existing software. In a 2011 Ars Technica article, much was said about cycle accuracy and how it preserves games by ...
10 votes
2 answers
4k views

Is there an obstruction to emulating Gameboy link cable over Wi-Fi?

Emulation these days is well supported for loads of systems, and I understand that original Game Boy and Game Boy Colour are comparatively simple to emulate. Retro gaming is also pretty popular at the ...
1 vote
2 answers
270 views

Where can I obtain Olivetti P6060 disk images?

For a long time now, I've been looking for disk images from an Olivetti P6060, but so far I've found none. The Olivetti P6060 was the second computer I wrote programs on, so making an emulator for it ...
3 votes
3 answers
3k views

Every single ROM in my collection has the wrong SHA1 hash according to No-Intros

I have a collection of ROM files for the NES, SNES, Nintendo 64 and others. These ROMs match exactly those games that I own or owned growing up. Recently, I found out about the "No-Intros" ...
7 votes
1 answer
463 views

Are SID Players practically almost full-fledged C64 Emulators?

There are many stand-alone audio players (and plugins for general audio players) out there for many systems that play the music of the Commodore 64 that is famous for its SID chip. I believe many of ...
7 votes
0 answers
2k views

What is it with DS emulation being so slow? [closed]

I have a fairly decent computer, and I have been messing around with DS Emulation recently. I have found that if a game is running on the emulator, and if I have anything else running, the performance ...
28 votes
2 answers
2k views

Are there runnable Multics systems available?

I've always read that Multics was a failed precurser of Unix, and was interested in seeing how it looks (as in, what features did Unix remove that Multics had, and did more modern Unixen bring them ...
13 votes
14 answers
3k views

Emulators running on 8-bit personal computers

Were there emulators running on 8-bit computers (preferably "mainstream" personal ones), available to general public (as opposed to in-house developers only)? I am mostly after emulators ...
8 votes
4 answers
3k views

How is it possible that this "Polymega™" console will "not support" Everdrives?

I'm reading here: https://polymega.com/faq/ WILL EVERDRIVES, GAME GENIES AND MULTI-GAME CARTS WORK WITH POLYMEGA™? Polymega™ does not support Game Genies or Everdrives. How is that possible? What's ...
11 votes
2 answers
2k views

Does Game Boy Color have *perfect* simulation of original Game Boy games?

In recent years, I've learned that the Super Game Boy peripheral for the SNES did not run Game Boy games at the exact right speed; they were slightly faster. Now I'm worrying that the same (or ...
31 votes
9 answers
12k views

NES cartridge ROM emulation with Arduino or Pi?

I'm looking to buy or make an NES cartridge that can be controlled by a microcontroller or small computer like the Raspberry Pi. I don't want to gut an NES cart and put an NES emulator inside it (as ...
10 votes
2 answers
2k views

Is there a standard interface for connecting debuggers to emulators?

Does any emulator have an interface, let's say with sockets, to which an arbitrary application can connect and get data so as to implement a debugger or monitor, etc? I know you could achieve this by ...
22 votes
5 answers
6k views

How to detect a real Commodore 64, THEC64, or VICE emulator in software?

Some programs notice if they are run on a real Commodore 64 or an emulator. For example, this demo from 2007 stops on VICE emulator 3.2 with the message "No VIC inside". How is this done? I ...
5 votes
2 answers
4k views

How does the Everdrive handle all the special chips and stuff that were put in cartridges?

An "Everdrive" is like a cartridge that looks just like a NES/SNES/N64/whatever cartridge, and is put into a real, original console. So you need the original hardware for it to work. And ...
25 votes
4 answers
3k views

Do instruction exercisers exist for 8086 and 68K (and other) CPUs?

For some of retroCPUs there exist exhaustive instruction exercisers, i.e. programs that are capable of catching the implementation errors when run on the emulator under development or on the newly ...