Ed S @EdS@mastodon.sdf.org

Showing the new single step capability of the CPU and the machine code monitor. When stepping through the instructions, the monitor prints the address and opcode of the next instruction, and the updated CPU state. #homebrewcomputer

https://gitlab.com/vale-computer/vale8x64/commit/4abb732577aba6d29201c007b91e1a8544dfe79f

Hoping to somehow repeat what was done in the Computer History Community in G+, that this will be a place to participate and post. comment, discuss and share about computing, computers, information technology and all things related, looking at the past to make sense of the present and try to understand the future.
Anybody with interest on computer history can participate, lets do #computerhistory

#onemonochromeaday

It was this particular computer (the bottom one):

#mk85 #pdp11 #retrocomputing #calculator

Landed! in #retrocomputing. Hello world!

1967 computer design.

@mrbill0 oh my goodness it's made out of a TIN CAN

https://archive.org/details/howtobuildaworkingdigitalcomputer_jun67/page/n101

This is glorious

Always listen to your mum

https://vimeo.com/252209946

@DrWhax 1992

Somehow the Verilog that I wrote to draw a 5x7 bitmap font *WORKED ON THE FIRST TRY*. I have no explanation for how it happened. That's unpossible.

@drzaiusx11 @ajroach42 yeah! i am a 2600 game dev! so i know it intimately

imagine more than 128 bytes of RAM!!

RT @adafruit@twitter.com

A chronologic history of CPUs by manufacturer #VintageComputing #RetroComputing #History #Microprocessors #Electronics https://adafru.it/DGJ

omg guess what just turned up in my mail

‪Gosper documented the entire Stanford demo in #lisp #math #hacking ‬

For the last couple of weeks I've been working on adding Ethernet support to the AT&T 3B2 emulator. It has been a frustrating process, but I think I finally cracked the problem. https://loomcom.com/blog/0118_understanding_the_ni_card.html

Nineteen dubious ways to compute the exponential of a matrix, twenty-five years later
Article by Moler, Cleve and Van Loan, C.
In collections: Attention-grabbing titles, Basically computer science
URL: http://www.jstor.org/stable/10.2307/25054364
PDF: http://www.cs.cornell.edu/cv/researchpdf/19ways+.pdf
Entry: http://read.somethingorotherwhatever.com/entry/Moler2003

@seven1m I don't think there is anything wrong with you :) I do think there is everything wrong with how to teach 'Computer Science'. It is the only engineering discipline not taught as Engineering. We don't use exemplars to build on, we don't cover the developmental history of CS, we don't build from a foundation of basics. So across much of the software industry we just reinvent or just create another version of something that's already got 100s of similar products.

My #mal (make a #lisp) compiler just got tail call optimization! 🎉 Though that means every function call is now using dynamic dispatch, so that stinks.

I think it’s possible to detect which functions have calls in tail-position, so maybe I can make those that don’t use static dispatch as an optimization. 🤔

Anyway, stoked about completing step 5 of 10 — half way done!

model 100 fpga success! LCD interface is working, slowly and dimly. negative voltage from charge pump is around -3, but needs to be -5 for more contrast.

#TOAD-2 #Twenex system at #LivingComputers Museum+Lab has a LEARN-EMACS tutorial that parallels the #GNUEmacs internal tutorial. Half-way through the Twenex tutorial and I haven't noticed any differences in the interface from the GNU version.