Search found 2 matches

by SamSkivington
Thu Dec 03, 2020 4:41 pm
Forum: Hardware
Topic: W65C816SXB behaving strangely on access to memory above FFFF
Replies: 16
Views: 5262

Re: W65C816SXB behaving strangely on access to memory above

Thank you everyone. That answered my question and much, much more.

Certainly seems like a bit of an oversight. No QA on these things? Anyway, maybe a 265SXB required for what I wanted to try. :)
by SamSkivington
Tue Nov 10, 2020 5:41 pm
Forum: Hardware
Topic: W65C816SXB behaving strangely on access to memory above FFFF
Replies: 16
Views: 5262

W65C816SXB behaving strangely on access to memory above FFFF

Hello. I'm new here.

I've recently purchased a W65C816SXB board and have very quickly run into something I wasn't expecting.

When I try to LDA from address $01:0000 or higher the debugger says I've hit a BRK and moves my PC elsewhere, to a block of seemingly random bytes outside the range of my ...