https://github.com/zellyn/go6502/tree/master/tests - look for 6502_functional_test.bin, but it's a bit dated right now.

Aah. Failure to search.

viewtopic.php?t=1639

Hi there,

For context, I'm trying to write an s-c compatible assembler that can be used on any platform.

I'm curious as to how people generally implement possibly zero-page instructions with forward references: you can't tell immediately whether the instruction will be two or three bytes long, and ...

The triangle looks like half a square to me... :-p

I actually had pretty good luck doing test-driven development: run the test, wait for it to break, fix the error, repeat.

I recommend Bruce Clark's decimal mode tests for figuring out bugs there.

You can see how I load and run the tests here: https://github.com/zellyn/go6502/blob/master/tests ...

@whartung: If you simply want an unmodified compilation of the binary, you can grab it from my repo and load it at $000A. However, I strongly recommend having a listing handy with annotated memory addresses...

The cl-6502 github repo does have an up-to-date version, thanks to BigEd's pull request. The authoritative source is the "Downloads" section of http://2m5.de

I have a version here too: https://github.com/zellyn/go6502/tree/master/tests

Beware that the lowest referenced memory address is $000A, so ...

whartung, here's what I've been doing.

I set up an Ubuntu VirtualBox image, with a shared folder. I then downloaded and installed the 6502 assembler from http://www.kingswood-consulting.co.uk/assemblers/, and used the command line specified in the functional test source. It works just fine for me ...

I've been running it in VirtualBox, with a shared folder.

Ugh. Serves me right for making up examples without checking. I'll get back here when I have a chance to re-break my emulator.

Klaus2m5: yes, the ignored reads don't have any effect without other hardware attached :-)

Unfortunately, I didn't write down the exact instruction that failed, and I fixed all of them at the same time. It was something like STA $D0,y - with y > $30: it was writing to page 1, because I was doing a ...

FYI, I am currently running my gate-level emulation in parallel with my instruction-level emulation, and finding discrepancies. Most are missing ignored reads.

However, it appears I managed to pass the functional tests with ZP,x and ZP,y instructions that would read from page 1 when the ZP address ...

Aah. Of course. Thanks!

I'll probably just write a sed script to stick that in there each time. :-)

fyi, right now I'm running your test suite against my first pass at a naive go-language translation of perfect6502. I expect it to take somewhere around three days, although I might get bored and ...

While you're in there changing things, I had one other idea: I find myself recompiling the latest version of your test, then checking the listing to set the "success" address in my test code (https://github.com/zellyn/go6502/blob/master/tests/functional_test.go). How about putting the "success ...

Fantastic!

As an aside, have you thought about putting the test suite on github? I've noticed myself (and seen links posted by others) pulling up https://github.com/redline6561/cl-6502/blob/master/tests/6502_functional_test.a65 in a browser, just because it's easy to check quickly without ...