3714 Results for "8-bit cpu"

Cambridge-1: a 4-bit 7400 series based CPU
Details from Cambridge-1: a 4-bit 7400 series based CPU
Cambridge-1 CPU spec: 4-bit word size4-bit adder (74HC283)8-bit data path8-bit address path8-bit memory word (4-bit instruction + 4-bit operand)40 Hz clock speed16 instruction ISAVirtualised control unit (using an Arduino Micro)Program loading (into...

CPU4
Details from CPU4
CPU 4 Background. Weird CPU My first CPU (https://hackaday.io/project/12879-weird-cpu) was an 8 bit TTA (Transport Triggered Architecture). It has a front panel and sits happily on my shelf chasing LEDs in circles (such is the life of a simple CPU):...

Tek V2
Details from Tek V2
The ZX machines read the matrix keyboard by lowering 1 out of 8 upper address lines (A8..A15) and then read 5 bits of data in lines D0..D4 (as D5..D7 serve for other purposes). According to the Z80 manual during an I/O read cycle the time spent from...

Microcode-less TTL CPU
Details from Microcode-less TTL CPU
Architecture Wikipedia article: Transport Triggered Architecture Since the CPU doesn't utilize microcode (I don't have an EPROM burner so one of the goals was to create the CPU without EPROM chips), it can do only one simple thing: move data during...

Generic 8-bit Processors Prototype (G8PP)
Details from Generic 8-bit Processors Prototype (G8PP)
Many 8-bit processors and some 16-bit processors from 1970's and 1980's are packaged as 40 or 48-pin DIP which is easy to prototype, processors such as Z80, 6800, 6809, 8080, 8085, 1802, 6502 and some 16-bit processors with 8-bit bus such as 68008...

The simplest 4-bit RISC CPU
Details from The simplest 4-bit RISC CPU
* This project is sponsored by PCBway, full feature custom PCB prototype service. https://www.pcbway.com/There are many prior examples of 4-bit CPU projects. For example, a 4-bit CPU (TD4 once again) by Fedor Gruzdev https://hackaday.io/project/161708-4-bit-cpu-td4-once-again...

ALU in DCTL technology
Details from ALU in DCTL technology
Now it is much too hot in the attic to work on my RISC Relay CPU, thinking starts about a next project. So I designed an ALU (wikipedia: ALU) in DCTL, that might be used in a next project. The ALU was simulated in the Falstad simulator, that...

CBS6000 Computer
Details from CBS6000 Computer
The CBS6000 is a 6502-based computer I built back in 2014. Back then I took great interest in retro computing especially Commodore 64 computers. Some of these computers did not work, so they would be repaired or scrapped for parts. I had a spare 6510...

OPC-5 - a CPU for FPGA, in one page
Details from OPC-5 - a CPU for FPGA, in one page
What kind of CPU can you describe in one page of code? Will it be usable? (You bet! In fact we've found it to be a pleasure to program.)Having previously built a short series of one-page 8 bit CPUs for CPLD, we wanted more space, and decided to target...

Kobold K2 - RISC TTL Computer
Details from Kobold K2 - RISC TTL Computer
MOTIVATION After having worked several months on the first Kobold CPU , I got the feeling that it was going in the wrong direction. I was working on a Javascript assembler, and got tangled up in the microcode complexity. I also didn't like that...

SPAM-1 - 8 Bit CPU
Details from SPAM-1 - 8 Bit CPU
V2 objective I got v1 working in the sim but then decided I wasn't going to build it in hardware as these very simple CPU's aren't that capable or complex and I wanted more of a challenge; something that would force me to learn more. So this has...

Isetta TTL computer
Details from Isetta TTL computer
The idea for this design was born at the end of januari (2023). While many homebuilt CPU's have their own, unique instruction set, I decided that for this project the CPU would use an existing instruction set. Also, I wanted to build the computer...

1-Bit ALU useing Open Loop Op-Amps
Details from 1-Bit ALU useing Open Loop Op-Amps
This was going to eventually be a 1 bit CPU with a 4 bit control register. I've sense shifted my sights on building a MC14500 Like state machine, which i'll post the link to the project once it's up on hackaday. I have not decided on an architecture...

Real-time OS automatic watering system
Details from Real-time OS automatic watering system
Utilizing sensor controller: One of the biggest advantages of using Texas Instruments MCU (I'm using CC2652 evaluation board) is its sensor controller. The sensor controller is a built-in CPU that can be used to read sensor data (ranging from digital...

The Hack computer from nand2tetris on breadboards
Details from The Hack computer from nand2tetris on breadboards
Time-lapse:Table of contents: SummaryCPURAMVGAKeyboardPower DeliveryComponents 1. Summary This project is a physical implementation of the Hack Computer, as described in the From Nand To Tetris course. The course describes the hardware design of...

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