DOS ain't dead

> Sorry, when I say it's working I was speaking of starting an external
> software, I test FreedOS MEM 1.11 (27/08/2006), it give 412320 bytes with
> Jemmex.

Okay, that's to be expected.

> You're right no shell command are working (dir, cd, ver...).
> I use FreeCom 0.84-pre2 (28/08/2006).

Okay, thanks.

> Regarding the building, I try to follow your manual but some needs were
> hard to find (mostly because I'm a win user and at work on solaris without
> any right to compile...).
> So I clone your source,

How? Do you use Mercurial/hg?

> then I extract the files from
> https://ulukai.org/ecm/rxdos-7.2x-2a9fce7d8975.zip without replacing
> existing files, that give me some missing files I cannot find. And I change
> nothing to the config files. Then I launch ./mak.sh multiple times and fix
> each error by adding missing software one by one.
>
> Here are the screen building output :
> https://www107.zippyshare.com/v/5r1MdlMP/file.html

This page seems to give a 403 error code for german IPs. I did get the file another way, though.

You can just use a line like this in ovr.sh (place next to cfg.sh):

[ -z "$INICOMP_METHOD" ] && INICOMP_METHOD=exodecr

Then you wouldn't have needed to install all the compression programs, just the one you use. Or use "none" to only build the uncompressed RxDOSU.COM, you can rename this and use it as RxDOS.COM instead. I may add some instructions for this to the manual eventually.

> I use winimage to build a floppy image using boot12.bin as bootsector. And
> I test the floppy using 86Box.

That's all right. Would be better to build boot12.bin from ldosboot though. I think oldmak.sh should do that too.

---
l

> Here are the screen building output :
> https://www107.zippyshare.com/v/5r1MdlMP/file.html

> And the list of what I download to have no error (only warnings):

The following warnings are expected:

* bytes in front of IRT
* bytes in front of pre-SDA
* bytes in front of ms7_entry/ldos_entry/end/end2 (for each iniload stage)
* bytes used for depacker (for each inicomp stage)
* localvariables has x bytes (for LZMA-lzip depacker inicomp stage)

The three "word data exceeds bounds" warnings, all of which are on near call instructions, are not expected but are probably not cause for alarm. What version of NASM are you using? (Tell me the output of running the nasm -v command please.)

Text file reproduced in full here:

nico7550@Nico7550-UX533:~/rxdos-7.2x$ ./mak.sh
Creating RxDOS.BIN
ldos/entry.asm:205: warning: 199 bytes in front of IRT [-w+user]
RxDOS/biocode.asm:455: warning: word data exceeds bounds [-w+number-overflow]
RxDOS/biocode.asm:504: warning: word data exceeds bounds [-w+number-overflow]
RxDOS/doscode.asm:600: warning: word data exceeds bounds [-w+number-overflow]
RxDOS/dosdata.asm:233: warning: 374 bytes in front of pre-SDA [-w+user]
Creating RxDOSU.COM
ldosboot/iniload.asm:743: warning: 0 bytes in front of ms7_entry [-w+user]
ldosboot/iniload.asm:1138: warning: 3 bytes in front of ldos_entry [-w+user]
ldosboot/iniload.asm:1526: warning: 15 bytes in front of end [-w+user]
ldosboot/iniload.asm:1598: warning: 431 bytes in front of end2 [-w+user]
-rw-rw-rw- 1 98304 May  3 15:46 bin/RxDOSU.COM
Creating RxDOS.COM
inicomp/inicomp.asm:1128: warning: iniblz: 1344 bytes used for depacker [-w+user]
ldosboot/iniload.asm:743: warning: 0 bytes in front of ms7_entry [-w+user]
ldosboot/iniload.asm:1138: warning: 3 bytes in front of ldos_entry [-w+user]
ldosboot/iniload.asm:1526: warning: 15 bytes in front of end [-w+user]
ldosboot/iniload.asm:1598: warning: 431 bytes in front of end2 [-w+user]
Creating RxDOS.COM
Compressed 93424 bytes into 47195 bytes ==> 50.52%
inicomp/inicomp.asm:1128: warning: inilz4: 1232 bytes used for depacker [-w+user]
ldosboot/iniload.asm:743: warning: 0 bytes in front of ms7_entry [-w+user]
ldosboot/iniload.asm:1138: warning: 3 bytes in front of ldos_entry [-w+user]
ldosboot/iniload.asm:1526: warning: 15 bytes in front of end [-w+user]
ldosboot/iniload.asm:1598: warning: 431 bytes in front of end2 [-w+user]
Creating RxDOS.COM
inicomp/inicomp.asm:1128: warning: inisz: 1248 bytes used for depacker [-w+user]
ldosboot/iniload.asm:743: warning: 0 bytes in front of ms7_entry [-w+user]
ldosboot/iniload.asm:1138: warning: 3 bytes in front of ldos_entry [-w+user]
ldosboot/iniload.asm:1526: warning: 15 bytes in front of end [-w+user]
ldosboot/iniload.asm:1598: warning: 431 bytes in front of end2 [-w+user]
Creating RxDOS.COM
 Reading 93424 bytes from "tmp/RxDOS.BIN".

Phase 1: Instrumenting file
-----------------------------
 Length of indata: 93424 bytes.
 [building.directed.acyclic.graph.building.directed.acyclic.graph.]
 Instrumenting file, done.

Phase 2: Calculating encoding
-----------------------------
 pass 1: optimizing ..
 [finding.shortest.path.finding.shortest.path.finding.shortest.pat]
  size 322961.0 bits ~40371 bytes
 pass 2: optimizing ..
 [finding.shortest.path.finding.shortest.path.finding.shortest.pat]
  size 322108.0 bits ~40264 bytes
 pass 3: optimizing ..
 [finding.shortest.path.finding.shortest.path.finding.shortest.pat]
  size 321949.0 bits ~40244 bytes
 pass 4: optimizing ..
 [finding.shortest.path.finding.shortest.path.finding.shortest.pat]
  size 321948.0 bits ~40244 bytes
 pass 5: optimizing ..
 Calculating encoding, done.

Phase 3: Generating output file
------------------------------
 Enc: 100122334478270F,1112,2233445666778889,34456789ABBBCCEF
 Length of crunched data: 40272 bytes.
 Crunched data reduced 53152 bytes (56.89%)
  Literal sequences are used, length 1 sequences are used,
  length 123 mirrors are not used, max length used is 28274 and
  the safety offset is 2.
 Writing 40272 bytes to "tmp/EXO/RxDOS.EXO".
inicomp/inicomp.asm:1128: warning: iniexo: 1152 bytes used for depacker [-w+user]
ldosboot/iniload.asm:743: warning: 0 bytes in front of ms7_entry [-w+user]
ldosboot/iniload.asm:1138: warning: 3 bytes in front of ldos_entry [-w+user]
ldosboot/iniload.asm:1526: warning: 15 bytes in front of end [-w+user]
ldosboot/iniload.asm:1598: warning: 431 bytes in front of end2 [-w+user]
Creating RxDOS.COM
Compressing...
Input size: 93424 bytes
Number of layers: 2
Output size: 59540 bytes
inicomp/inicomp.asm:1128: warning: inix: 1888 bytes used for depacker [-w+user]
ldosboot/iniload.asm:743: warning: 0 bytes in front of ms7_entry [-w+user]
ldosboot/iniload.asm:1138: warning: 3 bytes in front of ldos_entry [-w+user]
ldosboot/iniload.asm:1526: warning: 15 bytes in front of end [-w+user]
ldosboot/iniload.asm:1598: warning: 431 bytes in front of end2 [-w+user]
Creating RxDOS.COM
!......!!.....!!......!!.......!!.......
tmp/RxDOS.BIN 46.69 %    93424 -> 49801 (-w 14 -l 6)
inicomp/inicomp.asm:1128: warning: inihs: 1056 bytes used for depacker [-w+user]
ldosboot/iniload.asm:743: warning: 0 bytes in front of ms7_entry [-w+user]
ldosboot/iniload.asm:1138: warning: 3 bytes in front of ldos_entry [-w+user]
ldosboot/iniload.asm:1526: warning: 15 bytes in front of end [-w+user]
ldosboot/iniload.asm:1598: warning: 431 bytes in front of end2 [-w+user]
Creating RxDOS.COM
  tmp/RxDOS.BIN:  2.505:1, 39.92% ratio, 60.08% saved, 93424 in, 37299 out.
inicomp/lzd.asm:656: warning: localvariables has 14704 bytes [-w+user]
inicomp/inicomp.asm:1128: warning: inilz: 2928 bytes used for depacker [-w+user]
ldosboot/iniload.asm:743: warning: 0 bytes in front of ms7_entry [-w+user]
ldosboot/iniload.asm:1138: warning: 3 bytes in front of ldos_entry [-w+user]
ldosboot/iniload.asm:1526: warning: 15 bytes in front of end [-w+user]
ldosboot/iniload.asm:1598: warning: 431 bytes in front of end2 [-w+user]
Creating RxDOS.COM
compressing tmp/RxDOS.BIN into tmp/LZO/RxDOS.LZO
inicomp/inicomp.asm:1128: warning: inilzo: 1872 bytes used for depacker [-w+user]
ldosboot/iniload.asm:743: warning: 0 bytes in front of ms7_entry [-w+user]
ldosboot/iniload.asm:1138: warning: 3 bytes in front of ldos_entry [-w+user]
ldosboot/iniload.asm:1526: warning: 15 bytes in front of end [-w+user]
ldosboot/iniload.asm:1598: warning: 431 bytes in front of end2 [-w+user]
Note: Method lzd selected.
-rw-rw-rw- 1 45056 May  3 15:46 bin/RxDOS.COM

---
l

Ah, you edited your post to add this list. I didn't see it yet when I first replied.

> And the list of what I download to have no error (only warnings):
>
> sudo apt install mercurial
> sudo apt install halibut
> sudo apt install nasm

These are all correct.

> sudo apt install gcc

A C compiler is not needed for building RxDOS I believe, except if you want the kernel mode entry to use checksumming which needs to compile the crc16-t/iniload/checksum program.

> git clone https://github.com/dosemu2/dosemu2.git

Did you install this too, or just cloned it? Anyway, the default cfg.sh settings won't run the decomp test so you don't need it.

> hg clone https://bitbucket.org/ecm/rxdos-7.2x

Updated repo address is at domain hg.ulukai.org instead. Bitbucket Mercurial repos are going to be deleted in June or so.

> sudo apt install lzip

Only needed if the INICOMP_METHOD you use includes lzd.

> sudo apt install lzop

Only needed if method includes lzo.

> git clone https://github.com/atomicobject/heatshrink

Only needed if method includes heatshrink.

> git clone https://github.com/toastpp/toastpp/tree/master/numerics/blzpack
> git clone https://github.com/toastpp/toastpp/

This is wrong. This isn't the blzpack meant by the manual. The one I meant is https://github.com/jibsen/brieflz/blob/master/example/blzpack.c which you should (and did) clone using git clone https://github.com/jibsen/brieflz instead. And of course, blzpack is only needed if compression method includes brieflz.

> sudo apt install g++

Not sure why this would be needed.

> git clone https://github.com/kubo/snzip
> sudo apt install automake
> git clone https://github.com/google/snappy
> sudo apt install cmake

These two git clones are correct, but only needed if the method includes snappy.

> git clone https://github.com/jibsen/brieflz

This is correct to get BriefLZ and its blzpack. As mentioned, only needed if the method includes "brieflz".

> hg clone https://bitbucket.org/ecm/inicomp

You should not need to clone this separately, rxdos-7.2x contains inicomp as a subrepo. (The cfg.sh paths point to this subrepo by default.)

> sudo apt install python3-pip
> sudo pip3 install python-snappy
> sudo apt-get install libsnappy-dev

This should not be needed at all. Seems to be related to Snappy and snzip, but I don't think these are needed to build snzip.

> sudo apt install bison
> sudo apt install cc65

Not sure why those.

> git clone https://github.com/xbarin02/x-compressor.git

This is only needed if the method includes "x".

You did not show cloning the LZ4 repo to get lz4c, or downloading the Exomizer 3 release to get the exomizer compressor. You do seem to be using these so I assume you forgot listing them.

---
l