A System For The Sixties: The RCA Studio II

https://nicole.express/2024/radio-keith-orpheum.html

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

https://retropolis.com.br/2024/06/26/reporter-retro-104/

"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

COSMAC VIP 的 Chip-8 字符集 - Laurence Scotford
➤ COSMAC VIP 的 Chip-8 字符集分析
✤ https://www.laurencescotford.net/2020/07/19/chip-8-on-the-cosmac-vip-the-character-set/
本文分析 COSMAC VIP 電腦上 Chip-8 解釋器的字符集。Chip-8 字符集是一個精心設計的 sprite 集合，讓程式師能夠使用 DXYN 指令顯示這些字符。
+ 這篇文章對 COSMAC VIP 的 Chip-8 字符集進行了詳細的分析，對於想要了解這個老式電腦的程式設計和操作的人們非常有用。
+ 這篇文章的總結是非常精簡的，但仍然保留了原文的主要內容和意義。
#Programming #Retro Computing #chip-8 #COSMAC VIP

@vertigo for some reason I constantly mix-up SPI & i2c...

But regardless, my #rc2024 is going to be based on the #COSMAC (a much cooler name than "RCA 1802" or whatever) because I like it weird.

@freakazoid

I have other projects that should take precedence but I couldn't help myself. I put one of the #COSMAC #ELF boards on the workbench and entered the traditional test program which simply flashes the Q LED. Absolutely chuffed to see it working first try!

#VintageComputing / #RetroComputing

In the early 80s I came across the 1802-based Cosmicos in a book at the local library. I hand copied the schematics from that, which I recently came across. I decided to finally build it. I probably could have recreated the pcb, although that would have been expensive. So hand wiring it is. The data and address busses will be erm… interesting to do. #cosmac #8bit

Repórter Retro 093

https://retropolis.com.br/2023/06/28/reporter-retro-093/

#ReprterRetro #6800 #68000 #AdrianBlack #Aesthedes #AlsGeekLab #AnotherBoringTopic #AtariSt #AugustoBaffa #BBS #BenZotto #BITNET #Commodore64 #ComputaoGrfica #COSMAC #Doom #ethernet #FitaCassete #Hackaday #Holanda #HUG1802 #Intel #Jogos #LinguagemC #MicroCoreLabs #microsoft #ModernVintageGamer #Mouse #MSX #Multibus #NostalgiaNerd #NovaZelndia #os2 #PCXT #RCACDP1802 #recap #RetroRio #RNP #SID #SnteseDeVoz #Sphere #T

A new (non-radio) project: a #COSMAC-ELF RCA 1802 based microcomputer that fits in an Altoids tin. 1970’s computing in the palm of your hand complete with flippy switches and blinky lights. http://www.sunrise-ev.com/1802.htm

Repórter Retro 090

https://retropolis.com.br/2023/03/29/reporter-retro-090/

#RepórterRetro #6502 #8-BitResurgence #ActionRetro #adrianblack #anime #Arcade #Assembler #Assembly #Austrália #bug #Commodore128 #Commodore64 #Commodore900 #consoles #COSMAC #Cromemco #DennisRitchie #fliperama #fusion-C #GEOS #HTML #IBM #internet #Japão #Kokusai #LinguagemC #mostechnology #MrLurch #MS-DOS #MSX #MSXSJC #MSXVDP #NECPC-9801 #Obituário #PCXT #PlayChoice-10 #PowerPC #programação #Protótipo #RCACDP1802

Queen Victoria’s Secret (Teletype and COSMAC Elf) - We don’t really think anyone in the Victorian era had a COSMAC Elf — the homebrew ... - https://hackaday.com/2021/04/12/queen-victorias-secret-teletype-and-cosmac-elf/ #vintagecomputer #retrocomputing #cosmacelf #steampunk #cosmac