A 6502 with a Custom Language

The 6502 has a long history with hackers. The Apple computer (the one with no keyboard or even case) had a 6502. So did the Kim-1. [Dolo’s] version is a bit more refined, though. He started it a few years ago in response to one of our contests, but he’s been making improvements to it ever since. In particular, the custom programming language, Dflat, has many improvements lately, including true functions and high-resolution drawing.

The hardware has a CPU running at over 2.5 MHz, 44K of RAM, 16K of PROM, and 16K of video RAM. There’s plenty of I/O, including …read more http://pje.fyi/QGG9P6

Paul Jacob Evans


Espple: A Wireless Apple 1 on an ESP8266

The Apple 1 was one of the three big hobbyist computers that burst onto the scene in 1977. Unlike the PET 2001 and the TRS-80, only a couple hundred Apple 1s were ever produced, and with only a handful in existence today, you’ll have to fork out some serious money to get a Wozniak original for yourself.

The Apple 1 experience is easily emulated, of course, but this ESP8266 emulates the Apple 1 on hard mode. Dubbed the Espple by its creator [Hrvoje Cavrak], it emulates the 6502-based original in all its 1-MHz glory, while providing 20-kB of RAM, a …read more http://pje.fyi/Q8D0kj

Paul Jacob Evans

6502 Retrocomputing Goes to the Cloud

In what may be the strangest retrocomputing project we’ve seen lately, you can now access a virtual 6502 via Amazon’s Lambda computing service. We don’t mean there’s a web page with a simulated CPU on it. That’s old hat. This is a web service that takes a block of memory, executes 6502 code that it finds in it, and then returns a block of memory after a BRK opcode or a time out.

You format your request as a JSON-formatted POST request, so anything that can do an HTTP post can probably access it. If you aren’t feeling like writing …read more http://pje.fyi/PTGLMQ

Paul Jacob Evans

Introducing The MENSCH Microcomputer

A few weeks ago, I was browsing Tindie on one of my daily trawls for something interesting to write about. I came across something I hadn’t seen before. The Mensch Microcomputer is a product from Western Design Center (WDC) that puts a microcontroller based on the 65xx core on a small breakout board.

I’ve played around with some of WDC’s tools and toys before, back when the sent me a few dev boards to review. They’re cool, and I have considered building a little breakout board for this weird cross between a microcontroller and a system on a chip. Life …read more http://pje.fyi/NrD0YG

Paul Jacob Evans