Ttl homebrew computer software

The smallest homebrewed ttl cpu in the world hackaday. In the first year of make magazine they describe a person who builds a simple programmable computer using ttl gates. To join, drop dave a line, mentioning your pages url. Note that the newer ft757gxii has good computer interface capability, and we sell an interface for it. Besides running applications, this processor performs functions that traditionally require. See also how to build a homebrew programming cable for anytone at. The interface bridges the gap between the rs232 electrical levels used by the computer serial port, and the open collector shared bus used by the icom radios. This avoids the need for a serial interface using a second usb port just to control the transceiver ptt, which is the bane of interfaces like the. This 4 bit cpu was designed, built and tested without the aid of a logic analyzer or any hardware simulation software. Relays were used to construct computers well before vacuum tubes, transistors or integrated circuits were feasible for the task. Homebrew installs packages to their own directory and. The missing package manager for macos or linux homebrew.

Its cpu is built out of a handful of classic 7400series ics, colloquially known as the ttl logic series. Ive put it under 8bit cpus because although it supports internal 16 bit alu functions, from my shallow understanding of its architecture, it fits the description of an 8bit computer. The magic1 homebrewcpu successfully computed fibonacci10 at. There are 98 74 ttl series or 9000 series ttl chips, and two 1kx1 static ram chips. I was learning 6502 machine code at the time and dreamt of building a simple ttl cpu. The intention was rather to start another fpga based project, but to design a classic computer with dedicated controllers and a count of 74 ttl chips. The website should preferably use phorum as software since this would simplify the transfer of the content of the old forum very much. This program allows you to edit or create simple meta. Today you can hop online and watch video on how to brew. The original rc2014 has been very popular with the homebrew computer crowd, but the modular nature of it does dictate a lot of soldering, an inefficient use of logic chips and a relatively large footprint. Such a cpu is sometimes called a home brew cpu or a home built cpu.

One off board from pcb shops are expensive since the setup fee is the expensive part. The computer kit can be configured from minimalist to expanded and runs several packages of software including an open source. The computer uses 100 discrete logic integrated circuits. Like ive said before, i admire the gigatron ttl computer, and it seems to have reawakened the desire to get into this type of work. It cannot send data to the computer, and you cannot even set the mode by computer. Its special in its own oddball way, because it has absolutely no complex logic chips in it, not even a microprocessor.

Microprocessor designwire wrap wikibooks, open books for an. That cpu may emulate a commercial design, but it cannot be just an offtheshelf chip. This is a guide on how to play any console on your computer. Like the 6502, the z80 has a lot of love in the homebrew micro scene, many notable uses all those cpm machines, a bunch of british micros, sega master system, and arcade games like pacman. The script explains what it will do and then pauses before it does it.

But this may already be a big step, and i would start with something simpler, so that you can focus on the cpu, which most likely will need some debugging before. If youre going a homebrew computer, you really need to restrict yourself somehow. A program is just a list of instructions that the computer follows exactly in the order you list them in. Homebrewing and computer science have been booming side by side ever since. Power up the gigatron and you play video games, program in basic or use a nifty. I create tutorialstyle videos about electronics, computer architecture, networking, and various other technical subjects. Homebrew installs the stuff you need that apple or your linux system didnt. It looks nice, but i decided that i wanted more flexibility in my new qrp rig.

The vic20 is an iconic device it set the standard for early home computers and was the first computer of any kind to sell over a million units. The internet is filled with inspiring examples of homebrew computers, including ones made from relays and ttl gates. My recent purchase from is shown along with homebrew ttl rs232 click to enlarge. For a pdf version of the slides and for more materials, check out the tutorials section. The rc2014 mini requires only 45% as much soldering, has 3 less ics and takes up. This is probably the most well known scratchbuilt ttl cpu in existence. It does priming calculations, og corrections, pitch rates, refractometer calculations, brew day timers, and much more. Playingrecording wii or other consoles on your computer. The computers here are simple, and presented in a way that i hope will make them easy to understand.

Th9000d programming software from tyt website buying a 3. The software automatically calculates the color, bitterness, gravity, and abv. You can also make use of software apps that help with everything from recipe formation to inventory control. This is the homepage for the homebuilt computers webring. This page describes my homebuilt icom civ interface. Unfortunately, the web being what it is i cant find stuff about previous years of the 6. You can record games if youre playing them on your computer, with much b. Gigatron is a ttl microcomputer that you build yourself. I saw one one in person and was amazed and impressed by the insane dedication as well as the madness of wirewrapping 1970sera ttl components into a cpu then a year later i saw two of them then i saw a third. In order to connect most all icom radios to a computer, an additional interface is required. The gigatron ttl microcomputer is a minimalistic retro computer. Rc2014 mini single board z80 computer kit from rfc2795. This may very well be the smallest homemade ttl cpu weve ever.

Dme is 16bit custom cpu complete with a full software stack and a multi tasking. Here you will find some information about my selfbuild 8bit computer i call it the mycpu. David brooks, designer of the simplexiii homebrew computer, has founded the homebuilt cpus web ring. It uses 51 revised to 50 integrated circuits, mostly in the 74ls. Only thing missing right now is some documentation on each of the modules. This is the smallest ttl homebrew cpu in the world.

I got a 4bit counter going and was able to feed 4bit data into a register and use the bus drivers to get the data out. I was looking at the kitsandparts one watter transceiver, but its a one bander rig. It was defined by a 16ma drive capability, and the necessity to sink 1. Historically, most of the early cpus were built by attaching integrated circuits.

Beersmith is by far one of the most used pieces of software in the. These pages describe kiwi, a motorola mc68008based computer system which was developed and built as a hobby. The world wide web didnt become publicly available until august 1991. The computer runs at 500 khz, with a 10 khz instruction rate, due to bitserial implementation to reduce complexity. Install homebrew on linux and windows subsystem for linux. This is a video tour of magic1, including a dive into. The main inspiration is the machines by konrad zuse of the late 30s and early 40s. Using the pb503 protoboard i did a bit of testing with the 74hct parts that i had ordered. Its relatively quick so long as you dont care about power consumption. The two classes of logic, ttl and cmos, are significantly different in their fundamental operation. Most of the trs80 home computer was, apart from cpu z80 and memory, built with ttl ics, including the 16 lines x 64 characters video, so the schematics may help you to get started. Ttl is current driven, while cmos is voltage driven. Like the old cpus of the eighties, it has 40 connections, an 8 bit databus, and 16 bit addressbus.

There is a huge difference between using ttl and using transistors. No emulators will be used, in stead we use the original console. Article from elektor mai 1974 describing homebrew computer made from 74series ttl addeddate 201609 12. Documentation for the docuwiki software used to create this site can be found here. Designing and building my own 8bit computer from scratch with 74xx ttl logic chips project owner contributor dm01. Its based on the z80 processor, clocked at 10mhz about 3 times faster than was typical in the z80s heyday, has 512kb of ram hence the name and 8kb of rom. This rig has very limited computer control capability. On top of the hardware specs, roelh also implemented several useful software features. Now, ive thought about widening the gigatron, but i see 2 main potential problems. Dennis kuschel, the originatorinventor offers it as a kit.

I believe the first two i saw were magic1 and bmow big mess owires. Successfully replacing this machines mos 6502 microprocessor would mean that the c746502 is functionally equivalent to the original, and a deserving bearer of the 6502 designation. The computer kit can be configured from minimalist to expanded and runs several packages of software including an open source window based operating system called contiki. The lm512 is an 8bit microcomputer which i designed and built over the course of 20 and 2014. Anyway, this project wont be the first 32 bit homebrew ttl processor. This video is a demonstration and description of the 4bit computer that i have designed and build within the last 23 months.

Cpuville is dedicated to the computer electronics hobby. I amuse myself by constructing a computer almost entirely out of relays. You want to build it using ttl chips, then you should just acid wash your own board. Ive been researching home built cpus and computers for a while. A group of students did build a ttl version of the beta processor many years ago. Your mb cost goes higher since it is about surface area. The ring is open to any computer project featuring a homebuilt cpu. See october 1985 qst, page 38 for an article on how to build your own interface. Prevalence of ttl logic chips in homebrew computers. On the mainboard are two uarts enabling a modern computer to act as a dumb terminal, a real time. The magic1 homebrewcpu successfully computed fibonacci10 at just before midnight on april, 2004. The projects and kits here reflect my interest in basic computer hardware. Visual studio template for wii homebrew luccax reggie.