What happens if you include:
ORG 0
DB 0
…or whatever equivalent works in that assembler? That should force the image to start at address zero.

Chromatix, it seemed very strange to me that Klaus' first defined segment was at $A and the assembled code was offset exactly by this amount. As you ...

You definitely have some sort of offset in the object code. This is what the official build shows at $0400, preceded by a block of $FF bytes:
00000400 d8 a2 ff 9a a9 00 8d 00 02 a2 05 4c 33 04 a0 05 |...........L3...|


That's right. I tried the DOS version of the assembler and the result is the ...

It might be that you need to build differently. Perhaps experiment with this setting:

;load_data_direct (0=move from code segment, 1=load directly)
;loading directly is preferred but may not be supported by your platform
;0 produces only consecutive object code, 1 is not suitable for a binary ...

Welcome! Indeed, I think it's true that the decimal ADC/SBC are the very last tests.

The official upstream sources are in Klaus' repository here:
https://github.com/Klaus2m5/6502_65C02_functional_tests

Within the repo, together with the sources and the binaries, you will find a listing, which ...

Hello Everyone,

First I would like to Thank Mr. Klaus Dormann for publishing his 6502 functional test. It has been instrumental towards the development of my 6502 emulator.

At this point my code seems to emulate the 6502 pretty well. I still need to perform some optimizations and clean up the ...