py65_int
Handling 6502 interrupts in py65 (by tmr4)
py65_65816
Add support for the 65C816 to py65 (by tmr4)
py65_int | py65_65816 | |
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4 | 3 | |
1 | 4 | |
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0.0 | 0.0 | |
over 2 years ago | over 2 years ago | |
Python | Python | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 or later |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
py65_int
Posts with mentions or reviews of py65_int.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-01-11.
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Simulating the 65C816 in py65
I've recommended py65, by Mike Naberezny, for 6502 development and have created several enhancements to it for my own builds (interrupt handling and debug window). Unfortunately, py65 doesn't support the 65C816. Luckily, it's open source and easy to modify, so I thought I'd try adding support for the 65C816.
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Adding a separate debug window to the py65 6502 emulator
After recently testing out modifying py65 to handle interrupts, I decided to have a go at adding a separate debug window to the emulator. A separate debug window is nice because you can use the debug/monitor features while your program is running, and its output doesn't mess up the main terminal.
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My Frankensteined 6502 - Five Months In
I also have plans for a 65C816 build in the future. I've been checking out emulators for the chip recently. Given my recent work customizing the py65 emulator for interrupts, I might take a stab at enhancing it for the 65C816 as a side project.
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Handling 6502 interrupts in py65
A while back I saw some work by u/adix that made me realize that modifying py65 was fairly straight forward. After getting it to simulate SD card access, I decided to see if I could get it to handle interrupts as well. With those changes I could use my hardware binary with py65. Check out the needed modifications on my GitHub. Of course, the changes that you need to make will be based on your particular build and code but hopefully my work will point you in the right direction if you're interested.
py65_65816
Posts with mentions or reviews of py65_65816.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-03-15.
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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.
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Starting something new in February... Step 1: buy stuff. (W65C816S build)
Unfortunately, Liara Forth is coded specifically for the w65c265sxb development board. I'm not sure how hard it would be to get it running on 816sxb. I was able to get it running in my py65816 simulation by changing the getc and putc addresses in the binary. Maybe something similar would work for you.
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Simulating the 65C816 in py65
I still have a lot of testing to do and not all features of the 65C816 are working yet. You can test it out yourself and follow my progress at GitHub.
What are some alternatives?
When comparing py65_int and py65_65816 you can also consider the following projects:
TaliForth2 - A Subroutine Threaded Code (STC) ANS-like Forth for the 65c02
py65 - Emulate 6502-based microcomputer systems in Python
py65_debug_window - Add a separate debug window to py65
LiaraForth - An "initial" ANSI(ish) Forth for the W65C265SXB SBC (65816 CPU)
265SXB-Guide - A Most Very Unofficial Guide to the W65C265SXB
of816 - Portable 32-bit Forth for the 65C816.
of816 - Portable 32-bit Forth for the 65C816.