[Simh] MOP header specs?

[Timothe Litt]

For VAX/Alpha code from VMS, .sys would be an executable linked
/NOHEADER.  This would be a raw memory image; no ISDs or compression,
just bits.

In this case, it appears to be a SRM console image that was extracted
from an HP firmware update kit.

The header is used by the firmware update utility and by the SRM's show
version (IIRC).

There's no reason for this to be loaded via MOP, at least on real
hardware; SRM contains the MOP client.

FYI, when qemu was working on alpha emulation, they applied some patches
to that image - I have no clue what they do or why.  See
https://lists.gnu.org/archive/html/qemu-devel/2009-03/msg00693.html

On 21-Feb-18 10:47, Timothy Stark wrote:
> Ok I figured out what is boot block in cl67srmrom.sys. There was no
> exe version (only sys files) for SROM on some Alpha firmware iso
> files.  I checked other larger sys files with exe files are almost
> same boot block for MOP loader.  Exe files are raw binaries to can be
> loaded and run by dummy simple loader.  
>

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