Questions tagged [emulation]
For questions about processes and software for emulating retro computer and console hardware (e.g. MAME, QEMU).
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Operating systems which have non-x86 instruction set architecture
What are the most famous operating systems for non-x86 computers? I mean, most famous OS which have different instruction set architecture.
Background (to better understand my task):
I ask this ...
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1answer
161 views
Could suitably-written Apple-I software force bytes into the display shift register, and do modern recreations emulate that?
The original Apple I didn't use RAM to hold the contents of the display, but instead used a group of six 1024-bit shift registers to hold the display contents and a seventh 1024-bit shift register to ...
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0answers
107 views
Emulator/Softwares to run old version of windows application/games on lastest version of windows 10 [closed]
Is there is any wine like Linux software/emulator for windows to run windows 7 or prior windows application on latest version of windows 10?
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5answers
537 views
What systems had the lowest resolution ever that still allowed games to be made?
Just for fun, I wrote my own Chip8 interpreter/emulator and it works.
The point is that it works in the terminal, meaning that a pixel is rendered using curses and a # character.
For the Chip8 that'...
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3answers
461 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 ...
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0answers
100 views
Symbian emulator to run Ngage games
I don't really know if this is the correct place to ask this, if not let me know where I should. I would like to know if it would be possible to run Ngage games on an existing Symbian emulator.
There ...
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1answer
212 views
Emulating IRIX on a modern system [closed]
Has there been any attempt to emulate a system that could run the IRIX operating system?
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17answers
6k views
Simplest system to create an emulator for
Next year I'm going to teach a 2-semester microprocessors class to third-year undergraduate EE students. In order to sign up for the class, students need to have completed programming and digital ...
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6answers
4k views
How do arcade ROMs work
The way I understand it, ROMS are like virtual games, and emulators are like virtual game consoles, or handhelds. What I don't understand is how there are ROMs for arcade games, which don't have ...
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5answers
4k views
Is it possible to make a ROM converter?
Based on my understanding, an emulator is necessary because the machine with the emulator on it (say Windows), doesn't execute the same machine code as the target platform (6502, for example). So what ...
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4answers
3k views
Why are different emulators needed to run platforms that use 6502 assembly code?
To my knowledge, an emulator turns machine code for a console into something that your computer can understand. For example, assembly code from a Gamecube game is not the same as from a .exe file.
...
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4answers
3k 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 ...
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4answers
524 views
Retro emulation with perfect V-sync
I'm building an retro emulator to connect to a PAL (720x576i @ 50 Hz) CRT TV, and would like a perfect V-blank image, so the visuals are identical to original arcades and retro computers.
In other ...
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2answers
392 views
Open source, non-GPL SID emulator
I am looking for a SID emulator that is open source, but not GPL. In particular, I am looking for something with a license that allows me to link it to a closed-source program; and also one that ...
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2answers
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 ...
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3answers
498 views
How to do I/O with emulation code?
I have a partly-written emulation program for the 8086 CPU. And I'm not sure how to go about adding I/O capabilities to it. The emulator implements a subset of the 8086 instruction set described here.
...
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2answers
279 views
Is emulation ultimately the future of retro computing? [closed]
As you probably know, nothing really lasts forever in the human-made world of appliances, especially electronic ones.
Whether it stems from market evolution, technical advancements, newer paradigms, ...
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1answer
394 views
Is it possible to make VICE load .prg files faster?
When I load a C64 .prg with the Hoxs64 emulator, my .prg loads pretty much instantly.
But when I load the same .prg file with VICE (x64 app.prg) it takes quite a while (depends on memory map, but ...
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3answers
778 views
Intel 8080 - Behaviour of the carry bit when comparing a value with 0
I'm in the process of writing an emulator for the Intel 8080.
The description of the CMP instruction from Intel's 8080 programming manual (see page 20) says the following:
The specified byte is ...
5
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1answer
199 views
Can't type angle bracket characters in AmigaOS 4.1 on WinUAE
Has anyone else experienced that when running AmigaOS 4.1 inside WinUAE that they can't type the < or > characters? I have a mostly bog-standard American QWERTY keyboard, no special emulation ...
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2answers
358 views
How to transfer files to C64 emulator quickly
I just discovered the fun of writing small programs (Basic/asm) for an emulated C64 for me.
Unfortunately, I cannot get used to the emulated C64 keybord, and would like to write the programs on the ...
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5answers
2k views
USB floppy drive emulator, is there such a thing? and if so, where can I get one
I'm aware of the floppy emulators that are installed to 3.5" bays where "disks" are stored on a flash drive. But what I need now is the opposite - essentially a USB dongle that emulates the floppy ...
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1answer
1k views
How to check the C64 graphics mode used by Maniac Mansion
I have been investigating the MS-DOS port of the C64's Maniac Mansion game. The original MS-DOS port used the C64-specific character map to draw the various backgrounds in the game. I noticed that ...
8
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1answer
487 views
How was the Traf-O-Data 8008 simulator developed?
Traf-O-Data was the first business partnership between Paul Allen, Bill Gates and Paul Gilbert. In order to develop the software for their custom-built Traf-O-Data machine (Intel 8008 Inside™), ...
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1answer
601 views
How was the Microsoft PDP-10 8080 emulator developed? [closed]
Altair BASIC, the first version of Microsoft BASIC, was developed using an Intel 8008 emulator, modified to emulate an Intel 8080, running on a PDP-10 computer. This emulator was originally designed ...
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2answers
382 views
How to obtain CPU and other hardware specs for emulator development
In order to write emulators for older systems, one has to know the "inner workings" of the original hardware and understand what makes it "tick". I've noticed that with some systems, proprietary ...
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8answers
927 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 running fully ...
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4answers
1k views
Emulate smooth scrolling
One thing I really liked about the 8-bit (and even most 16-bit) games was that the frame rate was fixed to the vertical blanking. Games were smooth back then. I've been trying to recreate that feeling ...
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1answer
338 views
Can someone help me get xROAR to read files? (M6809/TRS-80 ColorComputer)
I implemented a Forth interpreter or the TRS-80 Color Computer (M6809) way back in the 1980s, and I've been trying to figure out how to get it loaded into an emulator to test some parts of the ...
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2answers
331 views
Do any Atari 8-bit emulators produce the disk / tape I/O sound?
I asked this question several months ago about why did the Atari produce beeping sounds when loading a disk or tape and it seems that it was by design. However, as I've played with a few emulators ...
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6answers
1k views
Do any mainframe emulators exist with a functional FORTRAN compiler?
Similar to this question, but generalized to any mainframe computer from before the microprocessor era, does there exist an emulator and OS for a vintage mainframe computer that will run the output ...
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1answer
222 views
What are all the known file extensions for Atari 8-bit disk/tape/cartridge images?
I have a few collections of Atari 8-bit images that I've downloaded over the years, but only cherry picked into them. I'm at the point that I'd like to clean things up a bit and get rid of files that ...
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2answers
802 views
How old-computer emulators work?
I'm wondering how old-computer emulators work.
I can think of two possible approaches:
"hardware" approach - like a set of components that exactly act as low-level hardware elements. I mean a bus ...
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1answer
192 views
Trying to open IBM FILING ASSISTANT in DOSBOX, or other? [duplicate]
How does one get a program like a word doc onto MS DOS to begin with? I have a set of files that are backups, only one with .exe that is from an ancient word processor and would eventually like to ...
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1answer
257 views
pop af and flags
I'm writing a Z80 emulator in Swift for Mac OS and I have got as far as implementing the 16 bit pop instruction. The documentation I have found (i.e. The Z80 CPU User manual UM008011-0816 and also ...
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0answers
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Gamepad triggers main menu in Fuse SDL
I'm trying to set up a gamepad to work with Fuse on Ubuntu. No matter which type of joystick I try to emulate (including None), pressing button #2 (or B in the Sega naming) opens the main SDL menu. ...
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8answers
6k 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 ...
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2answers
1k views
First computer emulator in Windows
I released my ZX Spectrum emulation Wspecem, and GPL sources first time publicly in the Internet at large, the 15th May 1996, for Windows 95.
I am quite sure it was the first ZX Spectrum emulation ...
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4answers
713 views
Trying to understand what an “address latch” is while emulating the NES PPU
I'm attempting to emulate the NES PPU and I'm implementing its registers. In particular, reading from the PPU status register has the following effects:
Reading the status register will clear D7 ...
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3answers
1k views
What are the laws concerning emulation in the US?
Emulators have always been a gray area. Googling the laws on emulation reveals all sorts of different answers, often with people saying that it's ok because "it's old stuff anyways."
Are there laws ...
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1answer
138 views
Basilisk II error
When I try to open the BasiliskIIGUI.exe I get errors saying things like 'The program can't start because libglib 2.0-0.dll is missing from your computer'
I have the recommended GTK installed and I ...
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1answer
751 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 ...
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2answers
627 views
SheepShaver failing to install application; Not Enough Memory
I am trying to install "Kid Pix Deluxe 4" on Mac OS 9 using SheepShaver on Ubuntu 16.04.
A problem I am having is that when I try to install it, I get an error saying that I don't have enough memory. ...
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votes
1answer
271 views
Configuring the slots in MAME for different hardware
How can you configure the MAME emulator for different hardware (hardware cards) in the available slots of the emulated system? For example, how can you put in different cards in the emulated Apple ...
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1answer
7k views
Why is a BIOS dump not required to emulate Nintendo 64 games in most modern emulators?
In order to emulate some home consoles (Playstation 1/2, Sega Saturn/CD/32x, etc.) a dump of the system's BIOS is required to emulate the console. Out of the Nintendo 64 emulators I have found online,...
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1answer
1k views
No sound on SheepShaver for Windows 10
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 ...
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2answers
169 views
Desktop folder locked in SheepShaver
I am using SheepShaver on Windows 10, and I enabled the option that allows SheepShaver to put a My PC icon so I could access files from my actual PC. However, when I try to drag files from My PC to ...
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2answers
311 views
Classilla on SheepShaver for Windows
I am trying to install Classilla, an open-source browser for Mac OS9, on SheepShaver for Windows. In SheepShaverGui.exe, I have the Enable "My Computer" icon checked.
I open up SheepShaver and go to ...
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1answer
340 views
SheepShaver won't open after reboot
I am using SheepShaver on Windows 10. I had everything working, so I went to download Stuffit Expander 2011 to extract some software to use with SheepShaver. When the installation process was done I ...
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4answers
6k 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 ...
