When I was a kid, I wrote myself a Pascal compiler for my BBC Micro. It used the exceptional structured programming features of BBC Basic to implement a recursive descent compiler producing an intermediate p-code, which was then executed by a runtime virtual machine interpreter. (I don't remember ...

I'm pretty sure that encountering this thread was the first time I came across the RA8875, so it seems only appropriate to note here that I've just managed to get mine working with my 65C02 board, also over SPI (bit-banged via a 6522 although I'm planning to try moving to Daryl's 65SPI). It's ...

I've successfully used an open source program called "palwiz" by Bruce Tomlin (who I believe posts in the Atari Age forums). I have the source myself and can send it, although I'm not finding an online source right now. I ran it on MacOS but it's just a simple C program and so it should compile for ...

It's hard to see the details on that image, but I would make sure to ground all the unused inputs on the chip you're using for glue logic. When the inputs float, odd things can happen, and so your chip select signals might not be operating as you expect.

I can also report success using the MiniPro TL866II to program Atmel ATF16V8B GALs for address decoding. I haven't tried the 16V8Cs. Note that you do need the 866II, not the older 866CS.

I do develop code directly on my build in Forth, using a 6522-attached micro-SD card as storage. I have a nearly-complete assembler hosted on the build too (nearly complete means that's opcode-complete but needs some work for both the label table and for actually outputting executables) but for the ...

Great, I'll certainly check out the EhBASIC revision. Thanks!

There is more information online at http://www.dourish.com/projects/mite.html , including links to videos and GitHub repositories.

Not much progress on the hardware since I posted that photo (although I did add a proper power supply); the next milestone will be adding video via TMS9918A (or the Mk2 ...

I picked one up cheap on eBay and used it on my build. This was mainly because it was what I had used decades ago, in college courses; I hadn't used a manual tool and so the familiarity of the gun was reassuring as I was tackling an otherwise daunting job. Of course, I needed a manual tool for ...

I don't think that this has already been reported, but the Computer History Museum just published their video of the oral history that they took from Chuck Peddle. Lots of fascinating detail about the origins of our favorite microprocessor.

https://www.youtube.com/watch?v=enHF9lMseP8.

There's a tremendous set of videos from a group of folk who have been restoring an original Apollo Guidance Computer over the past couple of months -- amazing work.

https://www.youtube.com/playlist?list=P ... _x7-Ut_-w7

As of June 2019, I have been successfully programming Atmel 16V8s using the latest Minipro programmer (the TL866II, *NOT* the prior versions -A and -CS). I think that technically it's now called the Xgecu, not the Minipro. You must make sure that you are using the latest firmware (V8.51 at the time ...

I've been here a few years but still class myself a newbie.

I was moved to post since my wire-wrap prototype came up today, a more solid platform for the machine that's been running on solderless breadboards up until now. 4MHz 65C02, 2x 65C22, bit-banging SPI to an SD card, R6551 and 32K of EEPROM ...

I use Serial quite successfully with my SBC, including with my XMODEM implementation. I've seen the same effect, but my strategy is simply to have a short busy-loop pause after the last packet is received and that seems to have been working fine.

When I did the blocks code for my own Forth, I put together a basic screen editor with emacs-ish keybindings. It just presumes that it's talking to an ANSI-compatible terminal or terminal emulator, but these days, that's pretty much everything. It also presumes 16 lines of 64 characters for 1K ...