Repórter Retro 120 - Retrópolis

Este é o Repórter Retro 120, produzido pela A.R.N.O. (Agência Retropolitana de Notícias)! MP3 para ouvir offline Escute no YouTube Do que falamos? 40 anos da rede Token Ring 40 anos do C++ 40 anos do Intel 80386 (ou apenas 368 para os íntimos) O processador que mudou o jogo O processo de boot do

Retrópolis - A cidade dos clássicos

Tom Pittman's “A Short Course in Programming” for the RCA 1802 as PDF and EPUB

#RetroComputing #CDP1802 #Cosmac #RCA #1802

https://scruss.com/blog/2025/10/18/tom-pittmans-a-short-course-in-programming-for-the-rca-1802/

Tom Pittman’s “A Short Course in Programming” for the RCA 1802

Tom’s A Short Course In Programming (1980) is a good introduction for new 1802 programmers. Print copies are rare, so someone on the cosmacelf group asked if it existed as a printable PDF. We…

We Saw a Chicken …

Good news: Got my RCA VP3301 video terminal with #CDP1802 CPU and RCA VIS chipset this weekend!

Bad news: DIN plug I ordered from Digi-Key for power input was missing one of the pieces needed to assemble it.

Good news: Raised the issue on the Digi-Key web site, and notice of replacement part shipment being approved arrived very quickly, even though it's late Sunday evening!

Bad news: I have not powered up the terminal yet.

Good news: I did dump the terminal's ROM, which is not believed to be archived yet by the #COSMAC community! It was even my first time actually using my #glasgowinterfaceexplorer for a real purpose.

Bad news: While the terminal came with a user's manual and a schematic of the UART subsystem, it didn't include a full schematic, so it'll take some work to figure out the address map and whatnot.

Good news: Reverse engineering old computers is fun!

I bought an RCA VP-3301 terminal based on the #CDP1802 #COSMAC the other day on eBay. It just occurred to me that I have the same model of TV shown in this ad, except branded as the TRS-80 Color Video Receiver and marketed for the TRS-80 Color Computer. Are y’all thinking what I’m thinking?

https://www.kmoser.com/computerhistory/images/rca.jpg

Falling down the #RCA #CDP1802 #COSMAC rabbit hole again. Updated 1802 Membership Card and VIP2K kits are on their way to me, as well as an RCA VP3301 terminal that I paid too much for on eBay. Can't wait to see that stunning 40x20 text in several colors!
Current brain squirrel: #RCA #CDP1802 #COSMAC processors and hardware that used them.
A System For The Sixties: The RCA Studio II

Did you ever hear of the tragedy of the Capacitance Electronic Disc? I thought not. It’s not a story MCA would tell you. It’s an RCA legend. It’s said they h...

My CDP1802-equivalent RTL core can run at 166 Mhz in an XCKU5P Kintex Ultrascale+ FPGA (-1 speed grade). Given that my core takes exactly 1/8 as many clocks per instruction as a real CDP1802, this means that it will run at the equivalent speed of a 1.33 GHz CDP1802.
The real CDP1802 typically ran at 2.0 to 3.2 MHz.
#fpga #cdp1802 #cosmac
Repórter Retro 104 - Retrópolis

Este é o Repórter Retro 104, produzido pela A.R.N.O. (Agência Retropolitana de Notícias)! MP3 para ouvir offline Escute no YouTube Do que falamos? 30 anos do padrão IDE (vulgo ATA ou PATA) 35 anos do NetWare 386 40 anos do dBase III 50 anos do CP/M 50 anos do SQL O documento original, ainda com

Retrópolis - A cidade dos clássicos

"The COSMAC (Complementary Symmetry Monolithic Array Computer) is an 8-bit microprocessor family introduced by RCA. It is historically notable as the first CMOS microprocessor."

"Successors to the 1802 [ . . . ] have [ . . . ] enhanced features [ . . . ] There are also some minor pin function changes, but the line continues to be produced in its original 40-pin dual in-line package (DIP) format."

en.wikipedia.org/wiki/RCA_1802

That's pretty cool! Just learned about the #COSMAC from @requiem 's comment hackers.town/@requiem/11209580… .
8-bit CMOS microprocessor

RCA 1802 - Wikipedia