Re: [Simh] MOP header specs?

2018-02-24 Thread Johnny Billquist
On 2018-02-25 02:41, Paul Koning wrote: On Feb 24, 2018, at 8:27 PM, Johnny Billquist wrote: On 2018-02-24 17:21, Paul Koning wrote: On Feb 23, 2018, at 8:52 PM, Johnny Billquist wrote: ... Yes. But what difference does that make on the server side? The fact that the requested image is sm

Re: [Simh] MOP header specs?

2018-02-24 Thread Paul Koning
> On Feb 24, 2018, at 8:27 PM, Johnny Billquist wrote: > > On 2018-02-24 17:21, Paul Koning wrote: >>> On Feb 23, 2018, at 8:52 PM, Johnny Billquist wrote: >>> ... >>> Yes. But what difference does that make on the server side? The fact that >>> the requested image is small enough to fit into

Re: [Simh] MOP header specs?

2018-02-24 Thread Johnny Billquist
On 2018-02-24 17:21, Paul Koning wrote: On Feb 23, 2018, at 8:52 PM, Johnny Billquist wrote: On 2018-02-24 01:56, Paul Koning wrote: On Feb 23, 2018, at 5:28 PM, Johnny Billquist wrote: ... That's why a MOP load normally consists of asking for a program - which is the secondary loader

Re: [Simh] MOP header specs?

2018-02-24 Thread Paul Koning
> On Feb 23, 2018, at 8:52 PM, Johnny Billquist wrote: > > > > On 2018-02-24 01:56, Paul Koning wrote: >>> On Feb 23, 2018, at 5:28 PM, Johnny Billquist wrote: >>> >>> ... That's why a MOP load normally consists of asking for a program - which is the secondary loader. It's the s

Re: [Simh] MOP header specs?

2018-02-23 Thread Timothe Litt
On 23-Feb-18 19:56, Paul Koning wrote: > >> On Feb 23, 2018, at 5:28 PM, Johnny Billquist wrote: >> >> ... >>> That's why a MOP load normally consists of asking for a program - which is >>> the secondary loader. It's the secondary (or tertiary) loader that knows >>> how to unpack an image and

Re: [Simh] MOP header specs?

2018-02-23 Thread Johnny Billquist
On 2018-02-24 01:56, Paul Koning wrote: On Feb 23, 2018, at 5:28 PM, Johnny Billquist wrote: ... That's why a MOP load normally consists of asking for a program - which is the secondary loader. It's the secondary (or tertiary) loader that knows how to unpack an image and make additiona

Re: [Simh] MOP header specs?

2018-02-23 Thread Paul Koning
> On Feb 23, 2018, at 5:28 PM, Johnny Billquist wrote: > > ... >> That's why a MOP load normally consists of asking for a program - which is >> the secondary loader. It's the secondary (or tertiary) loader that knows >> how to unpack an image and make additional requests. > > Hum. Well, tha

Re: [Simh] MOP header specs?

2018-02-23 Thread Johnny Billquist
07:53, Tim Stark wrote: Johnny, Oh, I now got it. I mean SYS specs, not MOP specs. Is that TIN program available? Thanks, Tim -Original Message- From: Simh [mailto:simh-boun...@trailing-edge.com] On Behalf Of Johnny Billquist Sent: Friday, February 23, 2018 4:31 AM To:simh@trailing-edge.c

Re: [Simh] MOP header specs?

2018-02-23 Thread Johnny Billquist
e: Johnny, Oh, I now got it. I mean SYS specs, not MOP specs. Is that TIN program available? Thanks, Tim -Original Message- From: Simh [mailto:simh-boun...@trailing-edge.com] On Behalf Of Johnny Billquist Sent: Friday, February 23, 2018 4:31 AM To: simh@trailing-edge.com Subject:

Re: [Simh] MOP header specs?

2018-02-23 Thread Timothe Litt
sage- > From: Simh [mailto:simh-boun...@trailing-edge.com] On Behalf Of Johnny > Billquist > Sent: Friday, February 23, 2018 4:31 AM > To: simh@trailing-edge.com > Subject: Re: [Simh] MOP header specs? > > On 2018-02-21 04:13, Tim Stark wrote: >> Folks, >> >> Doe

Re: [Simh] MOP header specs?

2018-02-23 Thread Tim Stark
: [Simh] MOP header specs? On 2018-02-21 04:13, Tim Stark wrote: > Folks, > > Does anyone know any documentation provides some information about MOP > header in SYS files? MOP headers no. But if you are referring to the .SYS files DEC distributed for things like DEC servers, which boo

Re: [Simh] MOP header specs?

2018-02-23 Thread Johnny Billquist
On 2018-02-21 04:13, Tim Stark wrote: Folks, Does anyone know any documentation provides some information about MOP header in SYS files? MOP headers no. But if you are referring to the .SYS files DEC distributed for things like DEC servers, which booted over MOP, those SYS files look like "

Re: [Simh] MOP header specs?

2018-02-21 Thread Tim Stark
the beginning of EXE file directly (zero offset). Tim From: Simh [mailto:simh-boun...@trailing-edge.com] On Behalf Of Timothe Litt Sent: Wednesday, February 21, 2018 11:20 AM To: simh@trailing-edge.com Subject: Re: [Simh] MOP header specs? For VAX/Alpha code from VMS, .sys would be an

Re: [Simh] MOP header specs?

2018-02-21 Thread 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

Re: [Simh] MOP header specs?

2018-02-21 Thread Timothy Stark
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 simpl

Re: [Simh] MOP header specs?

2018-02-21 Thread Timothe Litt
On 21-Feb-18 09:32, Paul Koning wrote: > MOP is a protocol, not a storage spec.  The protocol is defined in > detail, in the MOP architecture spec, which can be found in various > collections of DECnet architecture specs. > Yes > I assume a SYS file is a file meant to be downloaded by a MOP server

Re: [Simh] MOP header specs?

2018-02-21 Thread Paul Koning
MOP is a protocol, not a storage spec. The protocol is defined in detail, in the MOP architecture spec, which can be found in various collections of DECnet architecture specs. I assume a SYS file is a file meant to be downloaded by a MOP server on some host. What the file contents means depen