#Intel8080

apfeltalk :verified:apfeltalk@creators.social
2025-10-27

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
apfeltalk.de/magazin/news/spac
#News #Tellerrand #Arcade #Emulatoren #Hardware #Intel8080 #SpaceInvaders #Videospiele

☮ ♥ ♬ 🧑‍💻peterrenshaw@ioc.exchange
2025-09-05

“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 <github.com/microsoft/BASIC-M65> (6,955 lines)

#software / #assembly / #KLOC / #MITLicense <theregister.com/2025/09/04/mic>

2025-08-13

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.

2025-07-26

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:

retrocomputingforum.com/t/shel

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

A closeup photo of a light wooden bookshelf containing 16 books spine out. The books cover the Oberon system, Turbo Pascal, algorithms, Intel 8080 Assembly, writing computer documentation, Smalltalk, software tools, recursion, and CP/M.
2025-07-18

IMSAI 8080 - You know that computer from War Games

makertube.net/w/wPFE51rS1KmpaV

2025-07-18

IMSAI 8080 - You know that computer from War Games

makertube.net/w/8mZyNmgP1ZqVw1

2025-06-11

☝️ @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.

bitsavers.org/pdf/digitalResea

#retrocomputing #cpm #intel8080 #x86

2025-05-23

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

github.com/BinaryMelodies/nasm

#intel8080 #NASM #assembler

Stewart Russellscruss@xoxo.zone
2025-04-26

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

Stewart Russellscruss@xoxo.zone
2025-04-25

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

Stewart Russellscruss@xoxo.zone
2025-04-24

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: 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

Stewart Russellscruss@xoxo.zone
2025-04-10

my quest to find a sensible 8080 cross assembler continues

zasm - Z80 Assembler – Version 4.4 — k1.spdns.de/Develop/Projects/z - 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

2025-04-03

I can’t remember calling anything from #Microsoft cool or interesting before. But (!!!) if you have a look at gatesnotes.com/meet-bill/sourc 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.

2025-02-08

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:

web.archive.org/web/2024101019

#intel8080 #emulation #emulator #assembly

Olimexolimex
2025-01-08

Complete Intel8080 computer implemented on GateMateA1-EVB Open Source Hardware FPGA board runs Space Invaders Retro Game! Thanks Michael Schroeder for the amazing project olimex.wordpress.com/2025/01/0

Óscar Toledo G.nanochess
2024-12-29

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 nanochess.org/emulator.html

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