… I can now intercept and execute a real breakpoint, on demand by button, or a software breakpoint via the BRK opcode. The 7800 will send back it’s state and the address it broke on. Super cool, here is an example of the 2 flavors of breakpoints…
Now the trick is to request the breakpoint memory region through the I/O board and display a disassembly of it. 🙂 If that works fast enough, the gates are open, due to the virus like modification method I use to get debug functions working.