BOOTEASY.ASM would compile on NASM 0.98.15, but won't compile on more current 2.1x.x versions.
On NASM version 2.13.02 here are the errors when given nasm -f obj BOOTEASY.ASM:
BOOTEASY.ASM:260: error: invalid parameter to [default] directive
BOOTEASY.ASM:311: warning: label alone on a line without a colon might be in error [-w+orphan-labels]
On line 311 is because of the end. I guess it was expecting a label. Perhaps end may have been some kind of keyword at some point. I dunno, I try to stay away from assembly if at all possible.
Fixing those two errors fixes the errors and the code assembles on NASM 2.1x.x.
I assembled the current code and then the changed code with NASM 0.98.15 and got the exact same .OBJ files.
I've used the program dhex under Linux to compare these binaries.
TOP is the original assembled with 0.98.15. BOTTOM is assembled with NASM 2.15.05 under DOS. The yellow hexadecimal and text are the changes. The version number is the only change.
TOP is the original assembled with 0.98.15. BOTTOM is assembled with NASM 2.13.02 under Linux. The yellow hexadecimal and text are the changes. The version number and the filename being capitalized are the only changes.
micahcochran
commented
3 years ago
BOOTEASY.ASM would compile on NASM 0.98.15, but won't compile on more current 2.1x.x versions.
On NASM version 2.13.02 here are the errors when given
nasm -f obj BOOTEASY.ASM:The error on 260 this error is due to DEFAULT now being a directive in NASM. I simply changed
defaulttodefaultLocal.On line 311 is because of the
end. I guess it was expecting a label. Perhapsendmay have been some kind of keyword at some point. I dunno, I try to stay away from assembly if at all possible.Fixing those two errors fixes the errors and the code assembles on NASM 2.1x.x.
I assembled the current code and then the changed code with NASM 0.98.15 and got the exact same .OBJ files.
I've used the program dhex under Linux to compare these binaries.
TOP is the original assembled with 0.98.15. BOTTOM is assembled with NASM 2.15.05 under DOS. The yellow hexadecimal and text are the changes. The version number is the only change.
TOP is the original assembled with 0.98.15. BOTTOM is assembled with NASM 2.13.02 under Linux. The yellow hexadecimal and text are the changes. The version number and the filename being capitalized are the only changes.