#intel8080 — Public Fediverse posts

There is an emulator for the Altaid 8800 and it is good:
jonruttan/altaid-emu: Terminal-based emulator for the Altaid 8800 — https://github.com/jonruttan/altaid-emu

#RetroComputing #Intel8080

My Altaid 8800 — a pocket Altair clone that (in theory) fits into an Altoids tin — brings its best blinkenlights game running an XYBASIC program under CP/M

#RetroComputing #Intel8080

This week on the blog: ...mostly showing my work for what fed into last week's post, actually. A line-by-line comparison of four implementations of the same function on four variously related retro architectures.

This is gonna be one of the crunchy ones that most folks will want to skip but that the folks who like it will *really* like, in my experience.

https://bumbershootsoft.wordpress.com/2026/05/09/comparing-an-lz4-decompressor-on-four-legacy-cpus/

#retrocomputing #z80 #6502assembly #8086assembly #intel8080

me and the #intel8080 - I type M, but my head calls it HL ... I type MOV or MVI, but my head calls it LD ...

#z80
#assembler

My latest review of the Altair 8800 mini can also be found here on my blog:

https://ufud.org/posts/2025-12-27-return-of-the-8bit-bell-bottoms/

#Altair8800mini
#Review
#RetroComputing
#Intel8080

@rc2014 I do hope that the server running on port 8080 only uses #Intel8080 instructions

@mattgodbolt `XOR EAX, EAX` is the descendant of `XRA A` on the #Intel8080 (aka `XOR A` on the #Z80). On those machines saving a single byte vs the two bytes of `MOV A, 0` *really* mattered, both in terms of not wasting any of your precious few kilobytes of memory but also avoiding the time taken for an extra fetch from memory. You could tell an experienced machine coder by whether they used this optimisation, which is now over 50 years old!

E&L MMD-1 Mini-Micro Designer Restoration

#electronics #Intel8080 #8080microcomputer #microcomputer #computer #microcontroller

https://www.youtube.com/watch?v=eCAp3K7yTlQ&list=PL-_93BVApb5_ITRdT7BjqpjQfCqc58O-g&index=1
_______
• Mikrodenetleyici Programlama: https://www.youtube.com/@aslankemalaslan/playlists?view=50&sort=dd&shelf_id=7

Restoring the E&L MMD-1 Mini-Micro Designer Single-Board Computer from 1977 https://hackaday.com/2025/10/29/restoring-the-el-mmd-1-mini-micro-designer-single-board-computer-from-1977/ #HP5082-7300displays #singleboardcomputer #Mini-MicroDesigner #Retrocomputing #restoration #Intel8080 #MMD-1

Restoring the E&L MMD-1 Mini-Micro Designer Single-Board Computer from 1977 - Over on YouTube [CuriousMarc] and [TubeTimeUS] team up for a multi-part series E&a... - https://hackaday.com/2025/10/29/restoring-the-el-mmd-1-mini-micro-designer-single-board-computer-from-1977/ #hp5082-7300displays #singleboardcomputer #mini-microdesigner #retrocomputing #restoration #intel8080 #mmd-1

Space Invaders: Tempo-Änderung im Spiel durch zufälligen Prozessor-Effekt
Viele von euch kennen den berühmten Tempowechsel im Space Invaders Arcade-Spiel. Doch nur wenige wissen, dass nicht geniale Programmierung, sondern ein Hardware-Zufall dahintersteckt.

Wie das Intel 8080 Bottlen
https://www.apfeltalk.de/magazin/news/space-invaders-tempo-aenderung-im-spiel-durch-zufaelligen-prozessor-effekt/
#News #Tellerrand #Arcade #Emulatoren #Hardware #Intel8080 #SpaceInvaders #Videospiele

Restoring a Vintage Intel Prompt 80 8080 Microcomputer Trainer https://hackaday.com/2025/09/03/restoring-a-vintage-intel-prompt-80-8080-microcomputer-trainer/ #digitalaudiohacks #8080Microcomputer #Retrocomputing #computerhacks #restoration #Intel8080 #hardware #LEDHacks #Prompt80 #trainer

Restoring a Vintage Intel Prompt 80 8080 Microcomputer Trainer - Over on his blog our hacker [Scott Baker] restores a Prompt 80, which was a develo... - https://hackaday.com/2025/09/03/restoring-a-vintage-intel-prompt-80-8080-microcomputer-trainer/ #digitalaudiohacks #8080microcomputer #retrocomputing #computerhacks #restoration #intel8080 #hardware #ledhacks #prompt80 #trainer

I've heard it said the #mailstation firmware was produced by an 8080 compiler that was unaware of #z80 extensions, so I checked an #intel8080 instruction table and nope, even the 8080 could INC (HL)! So chalk up some more bytes and cycles for a less-than-brilliant compiler.

I put together most of my retrocomputing bookshelf while learning Intel 8080 and CP/M programming, which reflects in the selection of titles. For more great photos of retrocomputing bookshelfs see:

https://retrocomputingforum.com/t/shelfies-bookshelves-with-a-retrocomputing-angle/190

#retrocomputing #shelfie #books #cpm #intel8080 #pascal

☝️ @bitsavers has just posted yet another computing history treasure: the scans of the original Digital Research listings of the sources of CP/M 2.2, CP/M Plus 3.0, CP/M-86, and Concurrent CP/M-86 in Intel 8080 Assembly, PL/M, and Intel 8086 Assembly.

http://www.bitsavers.org/pdf/digitalResearch/CPM_Listings/

#retrocomputing #cpm #intel8080 #x86

👀

https://youtu.be/-_pdrvB2gD0

#Intel8080 #RetroComputing

Vintage Intel 8080 runs on a Modern FPGA - If you’re into retro CPUs and don’t shy away from wiring old-school voltages, [Mar... - https://hackaday.com/2025/05/26/vintage-intel-8080-runs-on-a-modern-fpga/ #microcontrollers #retrocomputing #classichacks #intel8080 #pcbhacks #8080a-1 #openocd #fpga #cm32 #uart #pcb

Vintage Intel 8080 runs on a Modern FPGA https://hackaday.com/2025/05/26/vintage-intel-8080-runs-on-a-modern-fpga/ #Microcontrollers #Retrocomputing #classichacks #Intel8080 #PCBHacks #8080A-1 #openocd #FPGA #CM32 #fpga #uart #pcb

This tool allows to assemble Intel 8080/8085 Assembly code with NASM and is implemented as a NASM macro package.

https://github.com/BinaryMelodies/nasm-i8080

#intel8080 #NASM #assembler

Repórter Retro 113

https://retropolis.com.br/2025/04/30/reporter-retro-113/

#ReprterRetro #AdrianBlack #AppleIIe #Arcade #Asteroids #Atari8bits #Centurion #DiscoRgido #disquete #DNS #DriveDeDisquete #EncontroDeUsurios #FitaDAT #fliperama #HomebrewComputerClub #IBM #Intel8080 #internet #KariLawler #LeeFelsenstein #LISP #microNOVA #microsoft #MicrosoftBob #MPI #MSDOS #MSXRio #PCAT #PhintageCollector #Radio86RK #Retrocomputo #RetroRio #RioRetroGames #SGI #TechTangents #TheCluelessEngineer #Ti

Repórter Retro 113

https://retropolis.com.br/2025/04/30/reporter-retro-113/

#ReprterRetro #AdrianBlack #AppleIIe #Arcade #Asteroids #Atari8bits #Centurion #DiscoRgido #disquete #DNS #DriveDeDisquete #EncontroDeUsurios #FitaDAT #fliperama #HomebrewComputerClub #IBM #Intel8080 #internet #KariLawler #LeeFelsenstein #LISP #microNOVA #microsoft #MicrosoftBob #MPI #MSDOS #MSXRio #PCAT #PhintageCollector #Radio86RK #Retrocomputo #RetroRio #RioRetroGames #SGI #TechTangents #TheCluelessEngineer #Ti

Repórter Retro 113

https://retropolis.com.br/2025/04/30/reporter-retro-113/

#ReprterRetro #AdrianBlack #AppleIIe #Arcade #Asteroids #Atari8bits #Centurion #DiscoRgido #disquete #DNS #DriveDeDisquete #EncontroDeUsurios #FitaDAT #fliperama #HomebrewComputerClub #IBM #Intel8080 #internet #KariLawler #LeeFelsenstein #LISP #microNOVA #microsoft #MicrosoftBob #MPI #MSDOS #MSXRio #PCAT #PhintageCollector #Radio86RK #Retrocomputo #RetroRio #RioRetroGames #SGI #TechTangents #TheCluelessEngineer #Ti

Repórter Retro 113

https://retropolis.com.br/2025/04/30/reporter-retro-113/

#ReprterRetro #AdrianBlack #AppleIIe #Arcade #Asteroids #Atari8bits #Centurion #DiscoRgido #disquete #DNS #DriveDeDisquete #EncontroDeUsurios #FitaDAT #fliperama #HomebrewComputerClub #IBM #Intel8080 #internet #KariLawler #LeeFelsenstein #LISP #microNOVA #microsoft #MicrosoftBob #MPI #MSDOS #MSXRio #PCAT #PhintageCollector #Radio86RK #Retrocomputo #RetroRio #RioRetroGames #SGI #TechTangents #TheCluelessEngineer #Ti

Trying to debug an errant CP/M system when all you've got is PIP ...
(I honestly think the BIOS isn't built correctly somehow, as commands seem to fail silently)

#RetroComputing #Intel8080 #cpm80

The joys of working out why my Altaid 8800 board will happily run code I enter from the monitor but won't run any uploaded CP/M programs

(There's an undocumented Intel Hex uploader built into the monitor, confirmed by Josh, who wrote it. Send the hex with suitable character and line delays and it will upload to RAM. No prompts or confirmation tho)

#RetroComputing #Intel8080 #altaid8800

belated response to this: I finally got mine working, with Lee Hart's help. Check that that +12 V and 5 V outputs are in spec. Contact Lee if you need help: https://www.sunrise-ev.com/8080.htm

Now to work out what the RAM disk image format is, and maybe even get the audio I/O working ...

#RetroComputing #8080 #Intel8080 #kit #Altaid8080

my quest to find a sensible 8080 cross assembler continues

zasm - Z80 Assembler – Version 4.4 — https://k1.spdns.de/Develop/Projects/zasm/Documentation/index.html - fails because it doesn't write correct Intel Hex files, and the author is curiously belligerent (and incoherent) about why they ignore ORG statements

Currently resorting to DR's CP/M 2.2 asm under emulation, how's your day going ...

#RetroComputing #Intel8080

Bill Gates divulga código-fonte que deu origem à #Microsoft • Tecnoblog

#sourcecode #altair8800 #Intel8080 #Assembly

https://tecnoblog.net/noticias/bill-gates-divulga-codigo-fonte-que-deu-origem-a-microsoft/

The website emulator101.com provided practical information and code for developing an Intel 8080 emulator to run Space Invaders, but the domain likely expired as it now redirects to a travel site. The Wayback Machine luckily archived this valuable resource on designing and implementing emulators:

https://web.archive.org/web/20241010195903/http://www.emulator101.com

#intel8080 #emulation #emulator #assembly

Complete Intel8080 computer implemented on GateMateA1-EVB Open Source Hardware FPGA board runs Space Invaders Retro Game! Thanks Michael Schroeder for the amazing project https://olimex.wordpress.com/2025/01/08/space-inavders-retrogame-runs-on-gatematea1-evb/ #intel8080 #colognechip #gatemate #fpga #retrogaming

This year's special theme of the "Vintage Computer Festival Europa" (#vcfe) is "50 years of #Intel8080 and #Motorola6800" with presentations and talks about these #8bit #microprocessor and its implementations.

Nevertheless, I will exhibit a scientific poster (and a #BreakOut-clone for my #Mega65) about my #BASIC researches and give a talk about #PaperWare #Preservation there.

So, join the #vcfe from Sa, 27.04. to Su, 28.04. and visit my exhibition and talk! :)

http://vcfe.org/

We did several tests with our #IMSAI8080 clone called #M100 yesterday. At first I read out the CPU boot ROM, seems containing only a bootloader. And the WD HDD controller ROM contains obviously nothing 😮 Afterwards some tests to store something into RAM. All without success, data bus always showed 0xFF when EXAMINEd 😭​
Next steps will be a test ROM filled with the data 0x00 to 0xFF to verify the correct function of the front panel. And maybe another with a small test program which outputs something to the IO area in the panel. Thats in brief about this area.
#RetroComputing #IMS #Intel8080

Repórter Retro 097

https://retropolis.com.br/2023/10/25/reporter-retro-097/

#ReprterRetro #3DO #6502 #AdrianBlack #AgonLight #Algoritmos #Alphasmart #AmigaCD32 #AnimaOClube #AppleII #AppleIIPlus #AppleIIcPlus #Assembler #Assembly #Chernobyl #ChernobylFamily #CircuitoIntegrado #CdigoMorse #Commodore64 #Criptografia #Disquetes #Encontros #eventos #expert #falncia #GNU #Hackaday #Heathkit #Intel8008 #Intel8080 #Jogos #KIM1 #Linux #Macintosh #microsoft #MicrosoftWord #MSDOS #MSX #MSXRio #nerd

Magnetic Bubble Memory Brought to Life on Heathkit - There are all kinds of technology that appear through the ages that find immediate... - https://hackaday.com/2023/06/09/magnetic-bubble-memory-brought-to-life-on-heathkit/ #retrocomputing #bubblememory #intel8080 #heathkit #magnetic #h8