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Author Topic: diy cpu, home-built hardware...  (Read 3462 times)
lemonhorse
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« on: March 05, 2009, 01:42:58 PM »

An 8-bit home-built CPU
I decided to build a homebrew CPU computer of my own. My goals were:
    * Build the CPU from scratch, primarily using basic 7400-series logic. No 6502, Z-80, etc.
    * Keep the hardware complexity to a minimum. I’m not an electrical engineer.
    * Be capable of running “real” programs, not a 4-bit CPU or toy machine.
    * Provide a way to interface with a PC.
    * Be fast enough to run interesting programs interactively. ...
http://www.stevechamberlin.com/cpu/



The N8VEM Single Board Computer (SBC) is a home brew Z80 small computer project. It is made in the style of vintage computers of the mid to late 1970's and early 1980's using a mix of classic and modern technologies.
http://n8vem-sbc.pbwiki.com/


Magic-1 is a completely homebuilt minicomputer.  It doesn't use an off-the-shelf microprocessor, but instead has a custom CPU made out of 74 Series TTL chips.  Altogether there are more than 200 chips in Magic-1 connected together with thousands of individually wrapped wires.  And, it works.  Not only the hardware, but a full software stack. There's a ANSI C cross-compiler for Magic-1 (retargeted LCC), a fully multi-user, multi-tasking port of the Minix 2 operating system. a TCP/IP stack and hundreds of programs. ...
http://www.homebrewcpu.com/



Mark 1 FORTH Computer
This computer has no microprocessor. The CPU is discrete TTL logic.
http://www.holmea.demon.co.uk/Mk1/Architecture.htm


The D16/M is a general-purpose, stored-program, single-address, 16-bit digital computer using two's complement arithmetic.  It manages subroutine calls and interrupts using a memory stack. The processor may directly address 64K words of memory or I/O.  Its timing and control unit is microprogrammed (fully horizontal, with a 72-bit control word).
http://www.timefracture.org/D16.html | http://www.timefracture.org/periph.html



The V4Z80P – A Z80 Based Laptop
A Z80 laptop? Why not :)
http://www.retroleum.co.uk/electronics-articles/previous/the-v4z80p-a-z80-based-laptop/
The V6Z80P+ is a standalone computer PCB I designed based on a Spartan II 150K FPGA and physical Z80 CPU running at 16MHz. ...
http://www.retroleum.co.uk/v6z80p/

« Last Edit: November 11, 2010, 04:01:45 PM by lemonhorse » Logged
lemonhorse
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« Reply #1 on: December 10, 2009, 06:11:36 PM »

68K computer
68000 CPU, RAM, decoder logic, PIC based bootloader / IO, displays
http://www.flickr.com/photos/nike6/sets/72157622840949619/
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lemonhorse
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« Reply #2 on: December 10, 2009, 06:12:56 PM »

Wooden computer case
http://woodgears.ca/computer_case/index.html


-.-

Z1013
http://z1013.mrboot.de/
« Last Edit: March 31, 2011, 12:18:06 PM by lemonhorse » Logged
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« Reply #3 on: March 17, 2010, 12:04:24 PM »

HxC Floppy Drive Emulator
USB HxC Floppy Emulator, SDCard HxC Floppy Emulator
http://torlus.com/floppy/ | http://hxc2001.free.fr/floppy_drive_emulator/index.html
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lemonhorse
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« Reply #4 on: June 15, 2010, 11:29:34 AM »

Der NKC, auch NDR-Klein-Computer genannt, war ein Selbstbauprojekt aus den frühen 1980er Jahren, welches seit 1984 durch die Fernsehsendung ComputerTreff des Bayerischen Fernsehen begleitet wurde.

Im Jahre 1984 brachte das NDR-Schulfernsehen unter der Leitung von Joachim Arendt eine 26-teilige Fernsehserie mit dem Titel NDR-Klein-Computer heraus, die je 15 Minuten dauerte. In dieser Sendung ging es nicht nur darum, dem Zuschauer die Funktionsweise eines Computers nahe zu bringen, sondern es wurde ein modulares System vorgestellt, mit dem der technisch interessierte Laie in der Lage war, von den einfachsten Beispielen aus der Sendung bis hin zum hochwertigen Heimcomputer seine praktischen Übungen zu absolvieren. Die Idee zu diesem modularen System stammt von Rolf-Dieter Klein, der damals Autor bei der Computerzeitschrift mc war.
http://de.wikipedia.org/wiki/NDR-Klein-Computer

    * Rolf-Dieter Klein: Rechner Modular, Franzis Verlag, ISBN 3-7723-8721-7
    * Rolf-Dieter Klein: Mikrocomputer selbstgebaut und programmiert, Franzis, ISBN 3-7723-7162-0


ndr-nkc.de wurde geschaffen, um das Andenken an den legendären NDR Klein Computer (NKC), der von Rolf-Dieter Klein entwickelt und in Verbindung mit den Fernsehsendungen Computertreff und dem dem NDR-Schulfernsehen einer breiten Öffentlichkeit vorgestellt wurde, aufrecht zu erhalten.
http://www.ndr-nkc.de/compo/index.htm


Diese Seite beschäftigt sich mit dem Selbstbau von Computern, im speziellen dem sogenannten NKC oder NDR-Klein Computer. Die verschiedenen Ausbaustuffen wie z.B. Z80 , 68008 , 68000, 68020 und 8080 (und die Singel Bord Computer 1/2/3/) möchte ich in aller ausführlichkeit beschreiben und für sie nachwelt erhalten.
http://www.drcrazy.de/nkc/


Seite über den NDR - Klein Computer (NKC)
http://www.schuetz.thtec.org/

http://schuetz.thtec.org/forumdrc/



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« Reply #5 on: September 22, 2010, 08:56:49 PM »

Homebrew Computer
This Computer has no CPU.  It has MyCPU!
"MyCPU" is a homebrew CPU that was primary developed for fun. It is a simple 8-bit processor that is completely built with simple discrete logic gates of the 74xx CMOS series. Over the years the project has grown, and now MyCPU is the brain of a real Personal Computer. The project is totally open source, and everybody is invited to participate and contribute to the project.
http://www.mycpu.eu/ | http://mycpu.selfhost.it/oldsite/index.htm


-.-

Linux on an 8-bit micro?
uARM is certainly no speed demon. It takes about 2 hours to boot to bash prompt ("init=/bin/bash" kernel command line). Then 4 more hours to boot up the entire Ubuntu ("exec init" and then login). Starting X takes a lot longer. The effective emulated CPU speed is about 6.5KHz, which is on par with what you'd expect emulating a 32-bit CPU & MMU on a measly 8-bit micro. Curiously enough, once booted, the system is somewhat usable. You can type a command and get a reply within a minute.
http://dmitry.co/index.php?p=./04.Thoughts/07.%20Linux%20on%208bit

« Last Edit: March 28, 2012, 06:22:52 PM by lemonhorse » Logged
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« Reply #6 on: March 31, 2011, 12:16:01 PM »

LLC2. Es handelt sich um einen "Selbstbau-" Rechner aus der DDR

DIY LLC2
http://www.ipb-halle.de/~ronald/cpm/LLC2/ | http://www.ipb-halle.de/~ronald/cpm/


http://www.robotrontechnik.de/index.htm?/html/computer/llc2.htm


http://www.robotrontechnik.de/html/forum/thwb/showtopic.php?threadid=630


http://www.ac1-info.de/

http://homecomputer-ddr.de.vu/



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lemonhorse
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« Reply #7 on: May 01, 2012, 05:12:17 PM »


Miscellaneous 8051 Projects
I can't remember what my first experience with the 8051 microcontroller was....
http://www.8051bits.com/
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