of816
TaliForth2
of816 | TaliForth2 | |
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3 | 5 | |
17 | 81 | |
- | - | |
0.0 | 0.0 | |
over 2 years ago | over 1 year ago | |
Assembly | Assembly | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 or later |
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of816
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My new 65816 Computer, very proud!
I also found this Forth implementation that might work.
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Ben's 6502 running with a 65816
There are several Forth versions for the 65816 that I've found online. Some are specialized to specific hardware but can be modified. Michael Guidero's OF816 is designed to be easily ported to new systems. I got it running on my 65816 emulator without much problem. It handles banked memory and uses a good subset of 65816 features.
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Starting a 65816 emulator in C#. I think this is going to be quite fun! So far: loading actual ROM binary, reading reset vector, jumping to and reading the first two bytes from that vector. (baby steps) I'll be able to dial this into my specific hardware config, which will be great.
One issue I had when I was finishing up my emulator was finding substantial programs to test that weren't designed for a particular architecture. I'm focused mainly on text-based programs, so it might not be as interesting for your emulation, but OF816, by Michael Guidero, is a larger program designed to be easily ported to new 65816-based systems. Here's my fork of it for my py65816 emulator as another example of porting it to an emulator. If you don't want to bother creating your own port or creating a binary, here's one with I/O mapped to 7FC0 and 7FE0 respectively. Load it at $8000 and reset to start. It uses bank 0 and bank 1 so you need to have at least those modeled.
TaliForth2
- Alternative to WozMon
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Adding a separate debug window to the py65 6502 emulator
Note that I've coded the debug window to work with my hardware binary which supports interrupts. As such it's somewhat specialized to my build and likely wouldn't work with your build without modification. Let me know if you're interested and I could point out changes needed for you build. Alternatively, I could fork the py65 GitHub and prepare a working version with my build's binary. As an added benefit you could play with my Forth operating system (though if your main interest is that then I'd recommend some better tested versions for the 6502, like Tali Forth 2 for example).
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Playing Cosmic Conquest, a old-style real-time strategy game, on my breadboard 6502
For a command line program I started out with getting WOZMON working and then began adding more capabilities similar to the Apple II system of old. I got tired of adding one-off functionality and discovered Forth when looking at programming languages suited for systems with limited resources. Look into TaliForth2 to get up and running fast on your 6502. The full program requires 24k ROM but can be slimmed down to fit in 16k pretty easily. I was inspired so I wrote my own Forth 2012 Standard version over the summer.
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From breadboard to soldered version
Get Taliforth running on it
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Hey anyone tried to write an assembler for the 6502?
I got tired of creating one-off functionality so I'm now working with Forth which is kind of like an operating system/programming language combined. It's pretty easing to get a version of that running on your 6502. Tali Forth 2 by Scott Stevenson ports pretty easily and has an editor, assembler and disassembler.
What are some alternatives?
w65c816sxb-forth - A Direct Threaded Forth for the WDC W65C816SXB developer board
Cosmic-Conquest-1982 - (Historic) Resurrecting one of the first real time strategy (RTS) games from 1982. Written in Forth.
Digital - A digital logic designer and circuit simulator.
NES-dev - A simple NES game written in 6502 assembly
of816 - Portable 32-bit Forth for the 65C816.
abn6502 - Solving the global IC shortage by reusing old stuff!
py65816 - Emulate 65816-based microcomputer systems in Python
derzforth - Bare-metal Forth implementation for RISC-V
65816_SBC_v1 - My personal 65816 based SBC
lynx_hacking - Collection of Lynx demos, trial.
kestrel - The Kestrel is a family of home-made computers, built as much as possible on open-source technology, and supporting as much as possible the open-source philosophy.
appler - Apple ][ emulator for MS-DOS, written in 8088 assembly