Mark-James M.
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markjamesm.bsky.social
Mark-James M.
@markjamesm.bsky.social
9 followers 8 following 2 posts
Software Developer based in Montreal, Quebec. My interests include #retrocomputing and #emulator development.
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markjamesm.bsky.social
I’ve been developing an #emulator for the MOS 6502 and ran into a hardware bug that occurs when a page boundary is crossed during the jump indirect instruction.

Check out my article on the bug & how you can handle it when emulating!

markjames.dev/blog/6502-ju...

#retrocomputing #emulation
Comparing the output of my emulator to test data for the jump indirect instruction JMP ($70FF)
February 13, 2026 at 4:10 AM
Reposted by Mark-James M.
martin.kleppmann.com
Hosting a website on a disposable vape bogdanthegeek.github.io/blog/project...
Hosting a WebSite on a Disposable Vape
Someone's trash is another person's web server.
bogdanthegeek.github.io
September 15, 2025 at 1:06 PM
markjamesm.bsky.social
Several months ago, I became interested in emulation, and it led to me developing Chippy, a CHIP-8 emulator written in C#.

Check out the source code on GitHub:

github.com/markjamesm/C...

#emulation #softwaredevelopment #programming #chip-8 #chip8
Screenshot of Chippy, a CHIP-8 emulator running the Timendus CHIP-8 Test Suite.
July 30, 2025 at 1:53 AM