Disassembly of an IBM PC/AT BIOS variant, from ROMs imaged by GearTechWolf and shared on the Vintage Computer Federation Forums. This version was not previously known to exist, and differs from all three AT BIOS revisions which IBM is known to have released.
The Super Dimension Fortress is a networked community of free software authors, teachers, students, researchers, hobbyists, enthusiasts and the blind. It is operated as a federally recognised non-profit 501(c)7 and is supported by its members.
Our mission is to provide remotely accessible computing facilities for the advancement of public education, cultural enrichment, scientific research and recreation. Members can interact electronically with each other regardless of their location using passive or interactive forums. Further purposes include the recreational exchange of information concerning the Liberal and Fine Arts.
Members have access to games, email, usenet, chat, bboard, gopherspace, webspace, programming utilities, archivers, browsers, and more. The SDF community is made up of caring, highly skilled people who operate behind the scenes and in the underground to maintain a non-commercial INTERNET.
Floptool is a tool for the maintenance and manipulation of floppy images that MAME users need to deal with. MAME directly supports .WAV audio formatted images, but many of the existing images out there may come in forms such as .TAP for Commodore 64 tapes, .CAS for Tandy Color Computer tapes, and so forth. Castool will convert these other formats to .WAV for use in MAME.
Floptool is part of the MAME project. It shares large portions of code with MAME, and its existence would not be if it were not for MAME. As such, the distribution terms are the same as MAME. Please read the MAME license thoroughly.
Supports dozens of image formats.
This device is necessary for connecting a SEGA dreamcast to a computer's modem via phone line. This is so that the dreamcast can get access to the internet. This is used in popular projects such as DreamPi.
It provides power to a dry telephone line allowing phones and modems to be used without a telephone network. This is popularly used with a SEGA Dreamcast to get online, but it can also be useful for connecting two computer modems together or even just two telephones.
In particular this is handy for computers with software modems. Any modem that needs drivers is a software modem. They do not produce their own line voltage. Two soft modems can communicate with each other using this device.
Sixteen Colors is an online archive for ANSI and ASCII artpacks. The artform was originally intended for display on computer textmode consoles. It gained popularity in the early nineties with the rise of dial-up Bulletin Board Systems (BBS).
At one point artists started to group together and release their work in collections released monthly, these collection are called artpacks. Rivalry resulted in fierce competition between these artgroups which only boosted activity. ACiD and iCE are examples of early prominent groups.
The rise of the Internet in the late nineties started the decline of BBS's and thus also the need and interest for ANSI/ASCII art. And although the need has almost vanished, still today artists are producing artpacks in collectives. Sixteen Colors aims to collect these artpacks as an archive in the public interest.
The ISA PicoMEM Extension board (For 8086/8088 PC) is a way to run Emulated ISA boards on a real PC. It currently connects the full 8Bit Memory and I/O Bus plus an IRQ to a Raspberry Pi Pico, through a multiplexor/Level shifter chip. The Pi Pico also has a 8Mbyte PSRAM connected in SPI and a MicroSD Slot. This GitHub Repository does not contains the Firmware at the moment, but PMMOUSE, PMEMM and PM2000 Source are available.
We are The Stop Bits, the nerdiest rock and roll band in the world! We make rock songs about the technology we love and use everyday. Popular, state-of-the-art technologies such as BASIC and the 6502 microprocessor.
Best photos and technical documentation of retro computers, TVs and digital watches that are part of my collection. I document them as my time permits.
Hi, I'm Sean, A.K.A. Action Retro on YouTube. I work on a lot of 80's and 90's Macs (and other vintage machines), and I really like to try and get them online. However, the modern internet is not kind to old machines, which generally cannot handle the complicated javascript, CSS, and encryption that modern sites have. However, they can browse basic websites just fine. So I decided to see how much of the internet I could turn into basic websites, so that old machines can browse the modern internet once again!
The search functionality of FrogFind is basically a custom wrapper for DuckDuckGo search, converting the results to extremely basic HTML that old browsers can read. When clicking through to pages from search results, those pages are processed through a PHP port of Mozilla's Readability, which is what powers Firefox's reader mode. I then further strip down the results to be as basic HTML as possible.
I designed FrogFind with classic Macs in mind, so I've been testing on my SE/30 to make sure it looks good in 1 bit color with a 512x384 resolution. Most of my testing has been on Netscape 1.1N and 2.0.2, as well as a few 68k Mac versions of iCab. FrogFind should also work great on any text-based web browser!
This repository serves as a historical archive containing specifications for the fictional hardware of the game 0x10c. The game was to be a multiplayer sandbox game set in space, with a fully programmable CPU controlling a ship. The game was cancelled in 2013 to much dismay of fans. A number of fan projects appeared aiming at continuing development, but they also appear to be abandoned.
There are a large number of fan works on GitHub, mainly implementations of the DCPU-16 hardware or code to run on it. GitHub still has a list of DCPU-16 ASM trending repositories. These usually included links to the official specifications which were either hosted on Pastebin or 0x10c.com. The later has been been offline since February 2014 (weirdly the domain was renewed for another year in April 2014), so this is my attempt to archive them for future reference.
This is my fork of the repo for later reference.
The Interim Computer Museum strives to preserve and share the history of computing through interactive exhibits using vintage computer hardware with modern enhancements. We are a non-profit membership organization open to all.
(The Interim Computer Museum is a subsidiary of the SDF Public Access UNIX System, 501(c)(7))
Topaz is a highly nostalgic monospaced typeface for people of a certain age and geographical distribution, but it's also a genuinely good font. It's high contrast, it's consistently designed (within the limits of 8x8px), and it's quite compact. It implements the ROM font of the Amiga 500 as a Truetype font, has all of the original symbols, and is Unicode compliant.
This guide will explain some ways to set up a VoIP ATA so that you can place calls between computers with modems (although any other pair of telephone devices will work.) When done, you will be able to:
- Connect two or more computers with modems directly together using a single ATA
- Connect a computer with a modem to another computer and modem elsewhere in your house over your LAN using two ATAs
- Connect a computer with a modem to another one in someone else's house over the internet
Note that this does NOT involve setting up Asterisk!
pdp7-unix is a project to resurrect Unix on the PDP-7 from scans of the original assembly code done by Norman Wilson. The scans of PDP-7 Unix are in the Unix Archive as the files 0*.pdf.
Study the complete source code for a self-hosting compiler that runs on and generates code for CP/M on the Z80 processor. No prior knowledge in the field of compiler construction is required. The T3X/0 language that is discussed and implemented in the book has its roots in Pascal and BCPL and is very simple. A full 20-page manual is contained in the book.
The reader should know at least one procedural programming language, such as C or Pascal, and at least one assembly language, ideally the one for the Z80 CPU. They should also know the basics of the CP/M operating system. For the determined autodicact a short introduction to Z80 assembly language is also included in the book.
I've reverse engineered the power board from a Thinkpad 700C. The P/N is 35G4785, and the FRU number is 48G3712. A very similar or identical board is also present in the Thinkpad 700. The schematic isn't perfect. Open a bug report if you find a mistake. Not all components were identified. A number of parts did not have designators on the silkscreen, so I assigned them new ones starting at 300.
The circuit board has four layers and an aluminum core, presumably for heat dissipation.
Do not fabricate this design. The PCB layout is for reference only. There are ground plane cuts in layer User.9 that need to get transferred to the ground plane. There are minor footprint differences as well. There are still unidentified components in the bill of materials.
Documentation and the Verilog model of the Soviet microprocessor 1801VM1 (also VM2 and VM3).
We’re an amateur phone collective in Philadelphia! Are you a hacker, artist, or engineer? We need your help!
PhilTel is looking to install new (to us) payphones within the city of Philadelphia. Any payphone installed will be completely free-to-use, allowing the user to place calls within North America. Additionally, we would like to provide various experiences and services through the phones; these could be as simple as voicemail, fun as a phone number that randomly calls other payphones, or as complex as an integration with phone collectors’ networks to allow phone-phreaking and exploration!
JawnCon is an event that celebrates the evolution of security and technology in our lives. Forged in the fires that is everything Philly, this event is driven to educate, celebrate and better understand all the things that make these weird machines blink and go bump in the night.
This site is dedicated to cataloging and sharing information on repairing devices. It's named "Caps" wiki because in older electronics capacitors are one of the more common causes of problems. But any repair information such as ICs, batteries, belts, 3D printer models, or more for devices of any age is welcome here!