HP-15C: Fixing the CHS and Stack Lift Bug

[Stevetuc]

(12-28-2015 11:14 PM)Thomas Klemm Wrote:  

(12-19-2015 03:08 PM)Mike (Stgt) Wrote:  The ROM contains some tables/lists, decoding them will not make too much sense, IMHO.

Maybe you can point me to the addresses?

(12-16-2015 10:37 PM)Didier Lachieze Wrote:  Any reason for not using D41 from the SDK41?

Meanwhile I could disassemble the 15c.obj file using D41.EXE. However I had to split the file into 3 parts of 8192 bytes each.
What I don't understand is the line numbering in 15c.obj:
0000-17ff
2000-37ff

Any ideas as to why there's a gap?

Cheers
Thomas

I think that's a section of the rom filled with zeros. In the rom embedded in the hp15cle firmware there is a gap filled with zeros (at a different address because the 12bit addresses are padded to 16bit)

What format was 15c.obj input to D41?
Did you convert to 16bit little-endian binary or can it read the ascii 15c.obj from non-pareil src?