http://www.gohai.net/clou32.php

this makes doxbox needless 🤣 in that case

Hi razz,

I tried to get Der Cluo to work with DOSBox, but no matter what I do, it always complains about an unsuitable memory configuration ("Ungeeignete Speicherkonfiguration!").

cause the game needs umb
the clou again
imgmount

Use a hex-editor and change the following bytes
from address 0x1bed0 to 0x1bed3 of theclou.exe:
0x85 to 0xbb
0xc0 to 0x00
0x74 to 0xe0
0x11 to 0x90

Or use the attached executable.

Didn't play it too long, but starts fine. ONLY use
the modified .exe file inside dosbox.

wd

Nice work, wd 😀

Could you tell me exactly what the patch do? I tried to disassemble the code around the patch, but I can not tell what it is doing except that you replace a (memory?) test with a register load(?) and an No-Op:

Original:

1	0000:0001BFC1 8B EC                  MOV     BP,SP
2	0000:0001BFC3 83 EC 04               SUB     SP,+04
3	0000:0001BFC6 B8 00 10               MOV     AX,1000
4	0000:0001BFC9 8B 56 06               MOV     DX,[BP+06]
5	0000:0001BFCC FF 1E 96 35            CALL    FAR [3596]
6
7	0000:0001BFD0 85 C0                  TEST    AX,AX
8	0000:0001BFD2 74 11                  JZ      (+11)       ;0000:0001BFE5
9
10	0000:0001BFD4 +0000C12A 89 5E FE     MOV     [BP-02],BX
11	0000:0001BFD7 +0000C12D C4 5E 08     LES     BX,[BP+08]
12	0000:0001BFDA +0000C130 8B 46 FE     MOV     AX,[BP-02]
13	0000:0001BFDD +0000C133 26 89 07     MOV     ES:[BX],AX
14	0000:0001BFE0 +0000C136 B8 FF FF     MOV     AX,FFFF
15	0000:0001BFE3 +0000C139 EB 1E        JMP     (+1E)       ;0000:0001C003
16	0000:0001BFE5 +0000C13B 81 E3 FF 00  AND     BX,00FF
17	0000:0001BFE9 +0000C13F 89 5E FE     MOV     [BP-02],BX
18	0000:0001BFEC +0000C142 89 56 FC     MOV     [BP-04],DX
19
20	0000:0001BFEF +0000C145 C4 5E 0C     LES     BX,[BP+0C]
21	0000:0001BFF2 +0000C148 8B 46 FC     MOV     AX,[BP-04]
22	0000:0001BFF5 +0000C14B 26 89 07     MOV     ES:[BX],AX
23	0000:0001BFF8 +0000C14E C4 5E 08     LES     BX,[BP+08]
24	0000:0001BFFB +0000C151 8B 46 FE     MOV     AX,[BP-02]
25	0000:0001BFFE +0000C154 26 89 07     MOV     ES:[BX],AX
26	0000:0001C001 +0000C157 33 C0        XOR     AX,AX
27	0000:0001C003 +0000C159 C9           LEAVE
28	0000:0001C004 +0000C15A CB           RETF

Patched:

1 	0000:0001BFD0 +0000C126 BB 00 E0     MOV     BX,E000
2 	0000:0001BFD3 +0000C129 90           NOP

wd wrote:

Didn't play it too long, but starts fine.

wd - 2 more questions.

1) How did you install it? Using the game's installer, or did you manually unpack & copy the files?

2) Which version of DOSBox did you use?

When I tried to run the installer with DOSBox 0.63, I always get an "Runtime error 205 at 0000:0DD7" as it is about the unpack/copy the files to C:\DerClou.

If I use DOSBox 0.61, everything is fine.

e000 is the segment (that one should be read/write inside dosbox
and unused i think), so they'll get e000 as their UMB and are
happy with it...

I just extracted the files, the installer has a zero when loading
the fpu regs for a division, but didn't try 0.61 yet, thanks for
the hint.

wd

A follow-up thread about how to patch binary files from inside DOSBox:

Patching binary files from inside DOSBox

The runtime error in the installer is a bug in localDrive::FindFirst.
As the installer searches x:\lha.exe with all attributes set, dosbox
assumes that they are searching for the volume label. Maybe the
conditions there have to be refined to provide correct results here.

So installing will only work with earlier versions (dosbox 0.61) or
by extracting all the files by hand.

wd