#silicium collection : Le #Kaypro 10 (#cpm 1983 13 Kg) :
le seul ordinateur qui faisait traitement de texte et musculation.

Retrouvez sa doc : retronik.silicium.org

#retrocomputing #heritage #toulouse
#vintagecomputer #geek #oldcomputer

From now on. All RomWBW kits sold with a Pico will be provided with a PICO2 (Pico1 is still supported , and so is using your own Pico)

Meaning, Ram disks, Fast File Serial and oodles of paged RAM in RomWBW :)

#RomWBW #RetroComputing #cpm

https://extkits.co.uk/product/pico-romwbw/

Update for Alt txt.

Emular el Commodore 128 con 80 columnas con VICE #c128 #commodore #cpm #emulación #gnu #vice
https://malagaoriginal.blogspot.com/2025/08/emular-el-commodore-128-con-80-columnas.html

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

Uploaded a new version of KILO LISP, a LISP system with a size in the kilobyte range (22KB on DOS, 26KB on CP/M). This version contains many fixes and improvements from MICRO COMMON LISP, which is derived from it.
http://t3x.org/klisp/22/
http://t3x.org/mcl/
#LISP #DOS #CPM

Retro Computing Nostalgia meet Open Source Software and Hardware with AgonLight and Neo6502, the incredible evolution of modern Retro computer projects https://olimex.wordpress.com/2025/07/23/retro-computing-nostalgia-meet-open-source-software-and-hardware/ #z80 #w65c02 #retrocomputing #retrogaming #pascal #cpm #forth #basic #cc65

Has anyone experience in using CP/M with a ZX Spectrum Next? Any pointers to suitable disk images and/or patches? Also for Spectrum 3+, that reportedly had some AMSTRAD issued CP/M plus versions…

Memoirs of the CP/M creator released:

“Our father, Gary Kildall, was one of the founders of the personal computer industry, but you probably don’t know his name. Those who have heard of him may recall the myth that he ‘missed’ the opportunity to become Bill Gates by going flying instead of meeting with IBM. Unfortunately, this tall tale paints Gary as a ‘could-have-been,’ ignores his deep contributions, and overshadows his role as an inventor of key technologies that define how computer platforms run today.

Gary viewed computers as learning tools rather than profit engines. His career choices reflect a different definition of success, where innovation means sharing ideas, letting passion drive your work and making source code available for others to build upon. His work ethic during the 1970s resembles that of the open-source community today."

https://computerhistory.org/blog/in-his-own-words-gary-kildall/

CP/M Creator Gary Kildall's Memoirs Released as Free Download

https://spectrum.ieee.org/cpm-creator-gary-kildalls-memoirs-released-as-free-download

Extremely decent ASCIIART benchmark result on @tomjennings 's Friendly eZ80 CP/M computer running BASIC-80 5.21 : 11.3 seconds

Another benchmark suggests that it's running BASIC 47× faster than a C64

A few weeks ago I wondered what it takes to turn a small LISP-1 into a LISP-2. Turns out it takes just a few hours to get most things right, then some days to iron out a few subtleties, and then a couple of weeks to polish it into a piece of art.
MICRO COMMON LISP is a tiny, purely symbolic, microscopic subset of #CommonLISP. It runs in less than 64K bytes of memory, even on #DOS (tiny model) or CP/M. Here it is:
http://t3x.org/mcl/
#CPM #LISP

Code indentation in the 70ies was wild! #cpm #pli #programming #retrocomputing

The Mini #CommonLISP I have been working on now runs on CP/M with 2416 free cons cells. Enough to load Ken Kahn's tiny PROLOG and run a few simple queries.
The #AgonLight (18MHz eZ80) loads the LISP part of the code (236 lines) in 11 seconds. Simple programs run at acceptable speed, but slightly more complex PROLOG queries take *minutes*. :)
#LISP #CPM #PROLOG #Z80

Any recommendations for #rc2014 #CPM software?
#askingforafriend

#cpm #retrocomputing

Has anyone come across runnable binaries of SUPERCALC for CP/M? Very hard to find.

Looking for any usable spreadsheet program for CP/M, actually... MULTIPLAN, SUPERCALC, there was a VISICALC CP/M release but it's probably scarce.

(How sad it is, to see all of these short-sighted "disk imaging" systems to encapsulate obsolete software, but that require using legacy hardware, or weird handmade hardware designed 30 years ago that are as hard to come up with as the original hardware, only 20 years newer! Just preserve the files! Sheesh!)

New #openaccess publication #SciPost #Physics

Higher spin swampland conjecture for massive AdS3 gravity

Rajae Sammani, El Hassan Saidi
SciPost Phys. 18, 173 (2025)
https://scipost.org/SciPostPhys.18.6.173

Has anyone given thought to a modern keyboard, and modern character set needs, with CP/M? I think the situation might be close to hopeless; the documentation states explicitly "strip off the 8th bit" eg. 0x7f, so 1968 ASCII it is, but having app subvert the BIOS is common.

Just thought I'd ask before I set the task aside. I'm using a USB keyboard and mapping scan codes straight up; I've done real keyboards with dead keys etc but not for a long time. And honestly don't relish coding it (though I could maybe do it not in the Z80).

But even 512 bytes for a keymap is pushing it. That's 1/128th of total RAM space.

OK I'm back to old habits -- having re-discovered old habits weren't completely stupid.

Leor Zolman's BDS C compiler it is. It's got a lot of language cheats and shortcomings, but it's all scaled appropriately for small machines.

It's binary output is HALF the size of Aztec C's, which is fairly compliant (to a very old standard). I need code, not compliance.

#cpm #retrocomputing

WordStar has many shortcomings, I could not remember how minimal it is, but it is rock solid and that matters.

I'd like to find a copy of PMATE for CP/M (plenty around for DOS)

Leor seems like a great guy.

https://www.bdsoft.com/resources/bdsc.html