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
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
“Microsoft has open-sourced the version of BASIC it created in 1976 for the #MOS #6502 processor used in many early #microcomputers.
As the software colossus explained in a Wednesday post, Microsoft founders Bill Gates and Paul Allen wrote the company’s first product, BASIC for the #Altair8800 #microcomputer and the #Intel8080 #processor that powered it, in 1975.
A year later Gates and Ric Weiland, Microsoft’s second employee, ported Microsoft #BASIC to the #6502Processor.
In 1977, #CommodoreComputer licensed it for $25,000 and used #Microsoft #BASIC in its #PET, #VIC20, and #Commodore64 machines.”
source code <https://github.com/microsoft/BASIC-M6502/blob/main/m6502.asm> (6,955 lines)
#software / #assembly / #KLOC / #MITLicense <https://www.theregister.com/2025/09/04/microsoft_open_sources_6502_basic/>
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
IMSAI 8080 - You know that computer from War Games
IMSAI 8080 - You know that computer from War Games
☝️ @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.
This tool allows to assemble Intel 8080/8085 Assembly code with NASM and is implemented as a NASM macro package.
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)
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)
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 ...
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 ...
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/
I can’t remember calling anything from #Microsoft cool or interesting before. But (!!!) if you have a look at https://www.gatesnotes.com/meet-bill/source-code/reader/microsoft-original-source-code?WT.mc_id=20250331100000_Microsoft-50th_MED-MED it is not only a great #nostalgic #retro site, it also contains the #sourcecode of one of the most influential pieces of software in #70s hobbyist computing #history: #BASIC for the #ALTAIR8800 in #Intel8080 assembly language.
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
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
Fifty years of 8080! Now it is a good moment to remember my 8080 emulator in 4K of C language capable of running CP/M #retro #intel #intel8080 #cpm https://nanochess.org/emulator.html
