21326 Results for "8-bit cpu"

Almost done (on circuit simulator)
Log from JACA 1 & 2 Homebrew Computer
8 bit CPU with almost all instructions working fine, ALU implemented (2x 74181).Just 2 or 3 instructions more and it will be completed.Meanwhile the parts for the real CPU on breadboards are ordered, just waiting for delivery (rarely under 45 days in...

Anatomy of an 8-bits TTL microcomputer
Log from Gigatron TTL microcomputer
36 simple TTL chips for CPU, output and clock. A static RAM, an EPROM and a hand full of passives to make the system complete. I kept the unit coloring as in the block diagram, which in turn follows the Velleman wire colors on the breadboard version....

CPU Instructions
Log from A 16-bit CPU in Logisim
The instruction decoder takes the 16-bit contents of the Instruction Register, 12-bit microcodes determine which control signals are sent out to operate the various parts of the CPU and computer.

The Laughton Electronics One Bit Machine
Log from One Bit CPUs
The Laughton Electronics One Bit Machine The Laughton Electronics one bit machine is very likely the smallest discrete CPU that can be built (http://laughtonelectronics.com/Arcana/One-bit%20computer/One-bit%20computer.html): I have designed a simplified...

2nd gen CPU Started!
Log from JACA 1 & 2 Homebrew Computer
Starting design of 2nd generation CPU (8 bit, focusing on real TTL chips, ready for implementation) on Logisim.It's impressive how the experience won in the previous project makes everything a lot easier.Available on github. Still in version 0.2, a long...

Adding 16 bit ISA support
Log from Beckman DU 600 Reverse Engineering
Today I will be adding 4 project logs, 3 of which are a bit overdue.For the first, sometime back in June of last year, I began to look into the simple ISA implementation used to interface the Cirrus Logic CL-GD5429 SVGA chip to the 68332. My intention...

32-bit Lion
Log from Lion FPGA CPU/Computer
The paged memory thing was troubling me a lot, so I made a new version 32 bit Lion CPU, I'll not surprisingly call it Lion32. Lion32 can have a 32bit address bus with tons of linear addressed memory.I made it as compatible as possible with the 16bit...

TD4B CPU Schematic and Simulating a TTA CPU
Log from TD4 CPU
TD4 CPU Version B Here id the full schematic And the PCB: Simulating A TTA A TTA is a Transport Triggered Architecture (i.e. a single instruction move only CPU). An example is my Weird CPU. Why simulate TTA? It is a good test for a CPU, can it...

Reverse Engineering Motor Signal Board Day 8 - Finally figured out the clock!
Log from Reviving and Reverse Engineering an Old Robot Arm
I finally figured out the clock that is running to all of the flip flops! There is a 2MHz clock signal coming from the main CPU board that goes into a 4 bit counter, and the flip flop clock is using the uppermost bit so it is effectively divided...

OPC-5 - the (16 bit) journey begins
Log from OPC-5 - a CPU for FPGA, in one page
We were last seen with the OPC-3 - a one-page computer with 16 bit data, 16 bit addresses, and 16 valid opcodes, as a hastily-inflated version of OPC-1, our CPU for CPLD. It felt good to have 16 bit words - lots of room in the instructions, and fitting...

Robby compiler for Voja's 4-bit processor?
Log from nedoPC SDK
Since new Supercon badge was introduced I started thinking about possible porting of my Robby compiler (aka nedoPC SDK) to this 4-bit processor - it should be doable. Robby is a programming language that operates only 16-bit signed integers. I can write...

PCB's ordered
Log from Kobold K2 - RISC TTL Computer
Two PCB's are designed now:The CPUA mainboard for the CPUThe video part is not designed yet. The mainboard has a 96 pin connector (same as CPU) where the video PCB can be placed once it is ready.Here comes the CPU impression from the PCB makers website:And...

Jelly as a HRM
Log from Jelly
Today, I discover about "Human Resource Machine", (https://tomorrowcorporation.com/humanresourcemachine) by https://github.com/adumont/hrm-cpu, https://github.com/nrkn/hrm-cpu and https://spectrum.ieee.org/three-computer-games-that-make-assembly-language-fun.The...

Contemplating 1-bit calculations, and challanges.
Log from 1 - bit ttl / cmos finite state machine
The Changes to the Instruction set: The MC14500 is primarily a 1-bit ICU. and thus, its not generally meant to do arithmetic (though it can through manual bit manipulation, it's not very fast.) Just as the UE14500 Project, our CPU will add...

Spare PCB for sale
Log from The simplest 4-bit RISC CPU
I have a few spare PCBs for sale for 4-bit RISC CPU.I can sale them. If interested, send me email or private message to Marsianin245.

|<
<
1
2
3
4
5
>
>|