21326 Results for "8-bit cpu"

The first bit of actual hardware (Adder)
Log from ECM-16/TTL homebrew computer
First, semi-experimental board with fast adders was completed at spring of 2020. It had a number of defects, and at the time I ran out of solder and as I was waiting for new batch to arrive from China, somehow I've lost interest in the project, so it...

Polaris CPU Released!!
Log from Kestrel Computer Project
It's crude. It's undocumented. It's untested (except for benchtests). But it's finally here!The Polaris 64-bit RISC-V CPU has finally landed, and now resides in its official repository on Github.Next steps include the obvious things (in no particular...

Finising the build
Log from Zero noise DIY NAS (bro & little sis)
Finally I closed the housing and .. the NAS booted successfully (I was a bit affraid of damageing the bare die CPU when mounting the cooler). The temperatures stay below 40° with full load and the maximum I reached was belwo 50° with full CPU...

LoRaSensorTile power usage
Log from Hackable CMWX1ZZABZ (LoRa) Devices
The LoRaSensorTile has a lot of sensors so the current is no longer dominated by the CPU current alone. I used an ST power monitor to measure the current usage as a function of time for different conditions. The ST power monitor supplies 3.30 V which...

Special Registers Completed
Log from The Spikeputor
Since I've been away from the Spikeputor Manufacturing Center in Texas, it's been awhile since I've been able to make any progress on the project. I finally got there and spent some time completing the last two items referenced in the Memory Module....

Fleshing out Instruction Set
Log from 8 Bit Breadboard CPU
I updated my instruction list using different addressing modes and the new ALU functions. I am over by 57 Instructions. Going to have to do some prioritizing. I can't beleive they didn't even use all 256 Instructions on the 6502 and...

Compact Flash interface
Log from STEbus Z8000
The original design uses an 8-bit data path. So it either works in the relatively slow 'PIO' mode, or wastes half the card data.A CF card can also present itself as a memory-mapped device, showing 1K of 16-bit words at a time.I think the CPU may be able...

PDP-8 Software Toolchain
Log from PDP-8 FPGA
Build PDP-8 Assembler Tool Assembler macro8x.c generates binary (DEC bin) files from PDP-8 Assembly Language filesNotes from macro8x.c source code This program has been built and successfully executed on: Linux (80486 CPU) using gcc RS/6000...

CPU load monitoring
Log from VSTiBox
There is a CPU load monitor in the bottom right of the main screen of the VST host. It doesn’t show the overall CPU load like Windows Task Manager, but the actual system load for updating VST's and processing the audio buffers. The idea is to measure...

CPU was synthesis passed!
Log from TMS9900 compatible CPU core in VHDL
I wrestled today with two of the remaining instructions, LDCR and STCR, but before explaining them, I did plug in the CPU to my EP994A project (TI-99/4A clone), basically replacing the external TMS99105 interface - and synthesis did pass!!!!!! Wow! I...

16-bit register/memory space
Log from One-instruction TTL Computer
One thing that's been very annoying in coding is how I interface to the memory. I have a 16-bit page register that allows me to access 128 memory locations with the source/destination bus. So when I push/pop I have to change my memory page...

A Bit of Background
Log from SPACE CAADET
Right now, Steampunkish Too, my steampunk-y "DIY laptop" aka cyberdeck, is down for the count. This issue is explained in proper detail elsewhere, go look if you're interested -- you want to look at the most recent project logs in "SETEC Astronomy" and...

Circuit boards work
Log from RC2016/99: TI-99/4A clone using TMS99105 CPU
It's been a while since my last update. During the time I haven't had that much time to put into the project. However, there is some nice progress:I have fully assembled two boards and they work. As can be seen from the picture above, one extra wire...

New Release 2.3.1-0 under development
Log from BBQ WLAN Thermometer
A new release is under development and testing. Mostly bugfixes and GUI usabilityadd: show CPU-temperatureimprove: wireless menuand a bit moreTo be released soon!

Front Panel fully functional
Log from 3-Chip Z80 Design
Here's the old school front panel with modern twists. The front panel is controlled by a 32 bit RISC CPU over an I2C bus. Pushbuttons (cheaper than toggles) are used but made to function like toggles.

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