How do I remove the AmsDOS file Header from a ROM File

[Audronic]

How do I remove the AmsDOS file Header from a ROM File
Is there a utility to do this Please..
I want to get the Checksum from a range of files.
Thanks    Ray

[arnoldemu]

How do I remove the AmsDOS file Header from a ROM File
Is there a utility to do this Please..
I want to get the Checksum from a range of files.
Thanks    Ray

addhead -r filename

Unofficial Amstrad WWW Resource

If you need a windows version build it with visual studio community edition

[Audronic]

Thanks for the Link.


I don't know how to create the file, Is it for the Amstrad or ?


Thanks     Ray

[Bryce]

If you have a Hex editor, just remove the rows of bytes before the line that starts with &80 and re-save the file.

Bryce.

[CraigsBar]

Or there is a tool that will do it in symbos too.

[Bryce]

Here's a picture to explain it a bit better:
The highlighted bytes need to be removed. In almost all cases, the raw ROM image should start with a &01 at the first address, which as you can see, will be found at address &80 if the file has an AMSDOS header.

Bryce.

[TFM]

How do I remove the AmsDOS file Header from a ROM File
Is there a utility to do this Please..
I want to get the Checksum from a range of files.
Thanks    Ray

On CPC side I would load it with FutureOS to address &0000 (Load to main memory). Then save it from address &0000 with file size &0010 (this is 16 KB, or file size 00016 when using decimal numbers).

Just load and save quick and easy. 


EDIT: You also can save a ROM directly using ROManager 2.14, it will be 16 KB header-less.

[Audronic]

@TFM


Thanks I ended up using ROMAN Version 1 as this does a dump without header


Thanks to all who contributed


Ray

[Audronic]

@Bryce


Thanks i tried a few using that method, which worked.
I then used ROMAN Version 1 that will read the Roms installed and dump them to a 16K File


Thanks     Ray

[TFM]

@TFM
Thanks I ended up using ROMAN Version 1 as this does a dump without header

Uuutsch! That just kicked my balls! 

[Munchausen]

Or in linux just do

dd if=original_file of=file_without_header skip=128

[Audronic]

@TFM


Oooopps,,, Nothing personal.
 
Roman Version 1 was already installed in the MegaFlash Plus SX.


Ray

[TFM]

Haha, just kidding! Glad you found a quick way! 

[AMSDOS]

Suspect this has long been sorted and I haven't had the need to create a ROM file, but a program like Lara can handle Loading Binary Files & Saving COM Files, which would remove the Headers & I think Lara can Save COM files anywhere in Memory & not just from 100h.


With Lara though, it was good to End Program just clear the BASIC from Memory and then go back into it & the program runs in the extra 64k when 128Kb is detected.