Home Page Forums MAME MAME A debugger feature request

Short & simple: a stack display. Given the current layout, the best position to place it would be into the register window - plenty of vertical space there.

FWIW, you can simulate that by opening a memory window and setting the address to the name of the stack register. It's not ideal because stacks usually grow backwards in memory, but it's a start

Better yet, just set the address to sp-100 and you'll get a dump 256 bytes before the stack.

Oh, wow. I didn't realize that could be a full expression.

Really interesting: once I set properly the chunks width and decrease the number of bytes per line so that there is just one chunk per line, the resulting view is almost perfect: the only features missing are a reverse of the order of the bytes so that the top of the stack is, well, on the top and an endianness switch.

Apart from the chunk width setting, it'd be nice to have this view mode pre-set.

Yes, expressions can be used pretty much everywhere. You can even do funky stuff like d@a0 to fetch the dword at a0 and use that as the address. Useful for tracking what things are pointing to.

Of course. It's the only real way to debug u'nSP-based drivers, since the atomic word size is 16 bits and MAME doesn't have a real good way of handling that; as a result, you have to stick *2 after any address you look up in the memory window.

Err, what? Set the ADDRBUS_SHIFT to -1 in the info and the debugger will do that for you (and in the memory maps). See the TMS32010 or ADSP2100 for an example.

How recently or un-recently was this feature added? I was looking high and low for something like that, couldn't find it.

At least as long as the GET_INFO interface for CPUs has existed.