THE HOST APP WORKS

It’s now possible to step through a 6502 program using the debugger software instead of manually sending commands via serial. The GUI doesn’t look as good as I’d like it to but that’s a bridge I’ll burn when I get to it. For now the CPU can be reset with the hardware reset button and the stp (step [count]) command allows stepping through individual clock cycles. This will soon be changed to step through individual instructions instead to allow easier debugging but I’ll leave the direct clock manipulation in just in case.

The screenshot clearly shows the W65C02S processor stepping through it’s reset cycle (the pseudo-reads were omitted since they are meaningless). The oscilloscope shows the external clock doing the 7 cycles until the reading of 0xFFFC is reached (bus is sampled on high clock so the positive edges count as clock ticks). Woah you read all that? Thx <3

From here on out it’s just a matter of implementing the rest of the commands on the host’s side and then doing some cool projects.