Re: [Freemint-discuss] Disassembly of TOS 1.00 with Ghidra

[Thorsten O. <ad...@th...>]

> for us/uk: 11/20/1985
> for de: 02/06/1986
> for fr: 04/24/1986

While trying to identify some more functions from aes/desktop, i also noticed 
that there are some strange differences if the location of functions, for 
example gem_main:

- in fr: gem_main fd9362
- in de: gem_main fd902a
- in us: gem_main fd9340

In TOS 1.04 and later, such addresses typically only differ by a few bytes, 
caused by different handling of alt-keys in the bios. But in this case, they 
differ by more than 800 bytes. So, given the different dates of the ROMs, i 
wonder whether language versions like de/fr were maybe already compiled from 
slightly newer versions of the code?


Also, it seems that TOS 1.00 was more close to the original DRI sources. Eg. 
the first thing in gem_main is a function call, which seems to be "ini_dlong" 
from the DRI sources. In 1.04, that function was "inlined" into gem_main.

PS: even worse, addresses of some variables seem to be different:

fr:
gem_main:
[00fd9362] 4e56 fff8                 link       a6,#-8
[00fd9366] 48e7 0304                 movem.l    d6-d7/a5,-(a7)
[00fd936a] 2a7c 0000 73e0            movea.l    #$000073E0,a5
[00fd9370] f7c8                      dc.w       $F7C8 ; ini_dlongs
[00fd9372] f7cc                      dc.w       $F7CC ; hcli
[00fd9374] f7d0                      dc.w       $F7D0 ; takecpm
[00fd9376] 4279 0000 9f1c            clr.w      $00009F1C
[00fd937c] 4279 0000 6ed2            clr.w      $00006ED2
[00fd9382] 42b9 0000 6e98            clr.l      $00006E98

de:
gem_main:
[00fd902a] 4e56 fff8                 link       a6,#-8
[00fd902e] 48e7 0304                 movem.l    d6-d7/a5,-(a7)
[00fd9032] 2a7c 0000 73e4            movea.l    #$000073E4,a5
[00fd9038] f7c8                      dc.w       $F7C8 ; ini_dlongs
[00fd903a] f7cc                      dc.w       $F7CC ; hcli
[00fd903c] f7d0                      dc.w       $F7D0 ; takecpm
[00fd903e] 4279 0000 9f20            clr.w      $00009F20
[00fd9044] 4279 0000 6ed6            clr.w      $00006ED6
[00fd904a] 42b9 0000 6e9c            clr.l      $00006E9C

So maybe it would have been better to start with the US version?