RomWBW Z80 Cpm kits back in stock...

Now comes with a Pico 2 as standard.

And you have the option of the cool retro wooden case.

Wee! I wrote a window manager for MP/M, four windows in the screen, dynamically resizeable, while program(s) are running.

Windows are virtually 24x80 "Heath H19" compatible, up to 30 x 90, so cursor ("curses") format windows shrunk to smallest visible, if dragged full size, draw the off-screen portions. Programs can be writing to the screen while resizing, the "VGA device" does the work.

The bottom line of each command line interpreter, I call the "hotspot", is always visible in a window; portions of the window larger than the box are virtually present, just not displayed.

The Z80 running MP/M or CP/M sees the screen as IO ports; one to write data to, one to specify the window. Magic keyboard keys (Fkeys) switch windows (MP/M: assigns keyboard to task window), arrow keys drag the "cursor" to resize all four at once, another key "maximizes" current screen (make largest; make 24x80; make tiny).

Lol, the cursor decided to not display for the video, there' still bugs to shake out etc.

You can resize the VGA display (480x640 to 1024x768) with program(s) running, and everything does exactly what you would expect. Can't do that with Xorg! Not that that's useful, lol, but the window buffering came out super clean.

This is event driven/task loop programming taken all the way; none of this is interrupt driven, it's all non-blocking task loops. Average task loop time (running through all dozen main tasks) is 5 - 10 uS, worst case 55 or so mS (large screen scrolling). I may unwind scrolling and drop that to a millisec or so but there's no downside I can determine.

MP/M will have four tasks, four "seats". on window per, and 48K per user/task, four running at once (and only four). MP/M performance will be very nice. Got the XIOS written, soon to test it...

#CP/M #cpm #mpm #MP/M #retrocomputing #z80

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

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…

The Computer History Museum published the first part of a memoir that Gary Killdall wrote only one year before his tragic death, in 1994.

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

I still not had to read it, but I will: Killdall was a major pioneer of micro-computing.

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/

Bobo del Aire! #CPM #ASCII #gaming

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

Taller de escritura: el Estado vigila, nosotres narramos

Sábado Abierto en la CPM

Taller de escritura
El Estado vigila, nosotres narramos
_Construir ficción con los archivos de la inteligencia policial
Dictado por Ramón D. Tarruella

Inicio: Sábado 17 de mayo- 17 hs.
Casa CPM, calle 54 #487, La Plata

Vamos a ejercitar la escritura de ficción utilizando documentos de inteligencia policial como punto de partida. […]

 17/5/2025  17:00 - 19:00
 Comisión Provincial por la Memoria  Mapa
#amba #la_plata #comisión_provincial_por_la_memoria #cpm #taller_de_escritura

 Más información en vagancio pirato
Reenviado desde Vagancio Agenda Popular
(https://t.me/experienciainterdimensional/8039)

Æsthetics turned up to 11.

Japanese CP/M handbook visuals were peak future.

My brain feels Gundam, Bladerunner, Tetsuo and Retrocomputing in one go.

Some highlights for your timeline...

#Japanese #RetroTech
#CPM #RetroComputing
#Typography

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