21326 Results for "8-bit cpu"

8 bit CPU desing progress
Log from JACA 1 & 2 Homebrew Computer
Great progress today, some instructions already working on Logisim (check it out the files on github).But...I figured out that for this design to work, there will be necessary two 3-state output drivers (sixteen gates) in the out of each register (and...

Entry 8: a Teensy bit of support
Log from Aiie! - an embedded Apple //e emulator
(This post refers to git commit 3af0b916d7481305979181e1c307ef40e1b46f19.)Finally! Here's the important part: all of the hardware model for the Teensy. Well, most of it. There's something I haven't put in quite yet that I'll get to in the next log. :)This...

4-bit TTL ALU
Log from One Transistor FlipFlop
If you are interested in flipflops, building CPU's might also be of interest to you.... I started a new project, a 4 bit TTL ALU with only 7 TTL IC's. It fits on a 1 x 1 inch PCB.....And the next project is a TTL CPU on one square inch...

Quick check of Mico8, a 8 bit software CPU on Lattice MachXO2
Log from HDL training board by FPGA for real beginner
Lattice has provided ready-made software processor named Mico8 (8bit CPU) and Mico32 (32bit CPU). This time I quickly checked its developing flow on my board. The Lattice's tutorial, which can be available by googling "Mico8 tutorial" is enough to see...

8-bit Microcontroller Hack Chat Transcript
Log from 8-bit Microcontroller Hack Chat
Garrett Scott I'm Garrett Scott, technical marketing engineer at Microchip Technolog, specifically in the 8-bit divisionYann Guidon / YGDES technical marketing engineer : is that technical, marketing, or engineering ?....Kevin @Yann Guidon / YGDES They...

UM245R - USB to 8 Bit Parallel Transceiver - How to use
Log from SPAM-1 - 8 Bit CPU
As one of the modules of my "TTL" CPU caled SPAM-1 I’ve been wiing up the UM245R serial to parallel UART from Future Tech Devices Inc FTDI. See datasheet :https://www.ftdichip.com/Support/Documents/DataSheets/Modules/DS_UM245R.pdf I’m using it...

Cambridge-1 4-bit CPU: microSD and I/O upgrades
Log from Cambridge-1: a 4-bit 7400 series based CPU
The Cambridge-1 has got some upgrades! Check out the latest video below:

64-bit to 16-bit Furcula Bridge ("Bottleneck") Completed
Log from Kestrel Computer Project
I recently completed the first implementation of the circuit that will enable me to deploy my CPU on a real FPGA: the 64-bit to 16-bit Furcula bus bridge. This bridge supports not only 8- and 16-bit transfers, but also includes a state machine to support...

Front Panel for 6800 CPU
Log from MIKBUG on Multicomp
8 Bit Computer Front Panel | Hackaday.io

16-bit Dividing
Log from One-instruction TTL Computer
I've been programming furiously. I have 16-bit functions going - Add, Subtract, and Divide. And I have 8-bit multiply going. I've changed from putting the operands on the stack to having a dedicated memory location for them. I...

4-bit cpu schematics 1.2
Log from The simplest 4-bit RISC CPU
I realized that the flip-flop chip 74LS173 is obsolete and no longer available.Replaced the obsolete 74LS173 with other TTL flip-flop 74LS175.Added jumper and switch for manual step clock operation,Added 5v voltage regulator and bypass capacitors.The...

General bit layout for instruction types
Log from Instruction Set for ECM-16/TTL homebrew cpu
All instructions are 16-bit wide (1 word), with optional extension of 16 more bits for immediate value needed for some of these instructions. Bit patterns for the instruction types: bits in instruction word: FEDC BA98 7654 3210 [extension]...

16x8 bit Diode PROM
Log from Hardware Controlled 4 bit CPU
Diode PROMHere is the Diode PROM:The "CS" DIL switch allows up to 8 PROM cards. I am only using one this time.The board layout is as follows:Laying out the diode PROM is quite time consuming, and near the limits of the Easy EDA auto-router. So I will...

Created Register Schematic in Upverter
Log from 8 Bit Breadboard CPU
Completed V1.0 schematic of one of the 16 bit registers. There will be two of these (AB and XY) Created an Upverter project and added to the links. https://upverter.com/2-Zons/1a1b5dbb645ac3ba/8-Bit-Breadboard-CPU---AB-Register/

4x8 Register File video
Log from SPAM-1 - 8 Bit CPU
See also... https://hackaday.io/project/166922-spam-1-8-bit-cpu/log/185000-register-not-file-timing

1
2
3
4
5
>
>|