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I'd like to start a small discussion about how to improve the display of operand references in 6502 disassembly.
I've been looking at 6502 disassembly for the better part of a year, so I'm fairly a…
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The reference implementation of the VM is not optimized for speed and has loads of paranoid checks.
Once things stabilize I will attempt an optimized version in 6502 assembly.
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I have observed that spl.py* throws an Unknown Token error when a numeric constant is specified to be 16b or 32b using the "%" and "#" characters, respectively:
```
( test 0 )
: main
0x1234# …
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It would be more useful if the CPU emulator could be used from VS Code as a generic executor of 6502 assembly because it's not easy to write assembly and move it into the emulator and the UI is not as…
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I've built a couple of 65816-based systems and have used ca65 for most of the code. Even though the 6502 landscape is slim when it comes to compilers, ones with a 65816 target are slim to none.
Is …
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Hi,
I started a branch in https://github.com/andreasbaumann/cpm65/tree/apple2_plus to tackle older Apple machines
with 40-column displays only (or later some Videx 80-columns card).
I can repor…
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Recently, tokumaru made [a post](http://forums.nesdev.com/viewtopic.php?f=2&t=17852&view=unread#p227152) about a 6502 assembler he's developing, which would be similar to asm6 but with some slight cha…
freem updated
6 years ago
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This isn't really an issue, but I thought it may be of interest to people who follow this project.
Previously I made a minesweeper clone in 6502 assembly for the Apple II, BBC Micro, Commodore 64 a…
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Using non-6502 in module level assembler code I get the following compilation error. Inline and stand-alone assembly is OK.
```console
error: instruction requires a CPU feature not currently enabled…
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There's an interesting 6502 assembly optimization where you put a 256-byte page aligned table in memory with each byte having the value of its index. Then you can make some pseudo-operations:
- ADC X…