Large screen support in Six Pack system

[vk2kad]

Many thanks to all who helped me dust off the cobwebs and get some dormant brain cells re-activated - what a buzz.

I have been able to successfully run 3278-4 sessions from various 3270 emulators.  Great to see VM on a proper sized screen.

Some interesting things I noticed.

It will be tricky to have multiple 3278 models like mod 4 and mod 5.

As I attach 3270 sessions to Hercules, they just get added to the next available port. So making the session match the device type will require good alignment.

What I did was to change the 3277 to 3278,model=4 in DMKRIO for the 0c0 definition

  RDEVICE ADDRESS=(0C0,32),DEVTYPE=3278,MODEL=4             DMK00310

So I have 32 mod 4s.   If my 3270 emulator is set up as mod 3 (32 x 80) strange things happen.   There also seems to be diffences in how some emulators behave - if I try wc3270 as a mod 4 I get a 24x80 screen with half a logo and the logon sequence won't work.

Another funny with edit.

If I edit a file when in a 3278-4 session, I get errors like

Here is the 1st screen when I edit DMKRIO ASSEMBLE - the header line appears as data ?????


                                                                               
                                                                               
                                                                               
                                                                               
TOF:                                                                          
      DMKRIO   ASSEMBLE A1  F  80 ZONE=  1- 71 VERFY=  1- 72 CASE=U TRUN      
                                                                               
EOF:                                                                          
                                                                        If I then page down I see garbage  

EDIT          DMKRIO   ASSEMBLE A1  F  80 ZONE=  1- 71 VERFY=  1- 72 CASE=U TRUN
C= 71                                                                          
                                                                               
   Új } å ¡ j N© þmÕN©o N¡j ¦Så ¡*j } å\¡Â&\K ì0®d¦Õåøô k N¿ì0®d¦Õì\K k        
Ø0^¥               Ø  ¼µ   I   Q   ¦ ÕWU              ¼µ                        
                                                                               
MODULE          S2   ¥V    ^ ¦03DOSLKED MODULE          S2   \V   à&  03        
   Új } å ¡ j N© þmÕN©o N¡j ¦Så ¡*j } å\¡Â&\K ì0®d¦Õåøô k N¿ì0®d¦Õì\K k        
Ø0^¥               Ø  ¼µ   I   Q   ¦ ÕWU              ¼µ                        
                                                                               
MODULE          S2   ¥V    ^ ¦03DOSLKED MODULE          S2   \V   à&  03        
   Új } å ¡ j N© þmÕN©o N¡j ¦Så ¡*j } å\¡Â&\K ì0®d¦Õåøô k N¿ì0®d¦Õì\K k        
Ø0^¥               Ø  ¼µ   I   Q   ¦ ÕWU              ¼µ                        
                                                                               
MODULE          S2   ¥V    ^ ¦03DOSLKED MODULE          S2   \V   à&  03        
   Új } å ¡ j N© þmÕN©o N¡j ¦Så ¡*j } å\¡Â&\K ì0®d¦Õåøô k N¿ì0®d¦Õì\K k        
Ø0^¥               Ø  ¼µ   I   Q   ¦ ÕWU              ¼µ                        
                                                                               
EOF:                                                                            

Has anyone else seen this ??   Looks like I can only edit in mod-2 mode.    

Cheers - Bern  VK2KAD
                                                                               
                                                                               
                                                                               

[au1john]

>
> As I attach 3270 sessions to Hercules, they just get added to the next
> available port. So making the session match the device type will require
> good alignment.
>

You can, with appropriate configuration in Hercules and your 3270 emulator
control what model type is at what address.
The simplest way is to code the 3270 device address configured in Hercules,
as this is what the groupname outlined here
http://www.hercules-390.org/hercconf.html#3270 defaults to, in what is
usually the "LU name" in the TN3270 configuration. It is in different places
for different emulators. If your TN3270 emulator doesn't have it, try and
find one that does. Off the top of my head I can think of 3 that do.. Tom
Brennan's Vista, Rumba and IBM's PCOMM.

Of course, you could code something like model2 or model3 as a group name
and configure your TN3270 appropriately.

[Dave Wade]

> Many thanks to all who helped me dust off the cobwebs and get some dormant
> brain cells re-activated - what a buzz.
>
> I have been able to successfully run 3278-4 sessions from various 3270
> emulators.  Great to see VM on a proper sized screen.
>
> Some interesting things I noticed.
>
> It will be tricky to have multiple 3278 models like mod 4 and mod 5.
>

As some one else has pointed out you can add groupnames in your config and
use the LUNAME parameter in your 3270 client.

> As I attach 3270 sessions to Hercules, they just get added to the next
> available port. So making the session match the device type will require
> good alignment.
> Another funny with edit.
>
> If I edit a file when in a 3278-4 session, I get errors like
>
> Here is the 1st screen when I edit DMKRIO ASSEMBLE - the header line
> appears as data ?????
>

I re-implemented the EDIT mods from the Waterloo tape and you should be able
to edit in 43 line mode, apart from the issues below. It works fine on my
hacked 5-pack but its had very little testing elsewhere. From looking at
other issues, I "think" that one of the necessary changes is missing from
the 6-pack, but I haven't had time to check what it is as I have been
preparing for a "PC Clinic" at our local Radio Club (www.smrcc.org.uk)
tomorrow night. It's a complex mod to apply as it hits CP, CMS Nucleus and
the EDIT & EDMAIN modules so checking may take some time, but I have some
little tools I wrote to test the CP and CMS mods.

Any way I'll try and sort this as soon as possible but it will probably be
some time at the weekend. Note that as mentioned above there are still some
of issues with the latest EDIT mods I am using (not sure which made it too
the 6-pack). It some times collapses in a heap when running an EXEC such as
$DUP, $MOVE and $COPY, and the multiple file support is doesn't always work
as expected. Actually I think that most of the issues with multiple file are
that it doesn't work as I expect....


Dave
G4UGM

[Dave Wade]

A quick fudge!. I have created a "6-pack fixes" folder in H390-VM and
uploaded the "EDIT MODULE" and "EDMAIN MODULE" files from my 5-pack
development system, as a zipped AWS file. To test these unzip the "AWS"
file, mount it on a drive, logon to MAINT and attach the tape to yourself
then do "VMFPLC2 LOAD". This will load the modules to your "A" disk for
testing. If happy copy to "S" disk (remember to make mode 2), resave CMS and
the CMS segment.

If not happy delete/rename and report on here. Can you let me know which
3270 emulator you are using as perhaps that's an issue!

Dave
G4UGM

> -----Original Message-----
> From: H390-VM@... [mailto:H390-VM@...] On Behalf
> Of Dave Wade
> Sent: 30 July 2009 08:33
> To: H390-VM@...
> Subject: RE: [H390-VM] Large screen support in Six Pack system
>
> > Many thanks to all who helped me dust off the cobwebs and get some
> dormant
> > brain cells re-activated - what a buzz.
> >
> > I have been able to successfully run 3278-4 sessions from various 3270
> > emulators.  Great to see VM on a proper sized screen.
> >
> > Some interesting things I noticed.
> >
> > It will be tricky to have multiple 3278 models like mod 4 and mod 5.
> >
>
> As some one else has pointed out you can add groupnames in your config and
> use the LUNAME parameter in your 3270 client.
>
> > As I attach 3270 sessions to Hercules, they just get added to the next
> > available port. So making the session match the device type will require
> > good alignment.
> > Another funny with edit.
> >
> > If I edit a file when in a 3278-4 session, I get errors like
> >
> > Here is the 1st screen when I edit DMKRIO ASSEMBLE - the header line
> > appears as data ?????
> >
>
> I re-implemented the EDIT mods from the Waterloo tape and you should be
> able
> to edit in 43 line mode, apart from the issues below. It works fine on my
> hacked 5-pack but its had very little testing elsewhere. From looking at
> other issues, I "think" that one of the necessary changes is missing from
> the 6-pack, but I haven't had time to check what it is as I have been
> preparing for a "PC Clinic" at our local Radio Club (www.smrcc.org.uk)
> tomorrow night. It's a complex mod to apply as it hits CP, CMS Nucleus and
> the EDIT & EDMAIN modules so checking may take some time, but I have some
> little tools I wrote to test the CP and CMS mods.
>
> Any way I'll try and sort this as soon as possible but it will probably be
> some time at the weekend. Note that as mentioned above there are still
> some
> of issues with the latest EDIT mods I am using (not sure which made it too
> the 6-pack). It some times collapses in a heap when running an EXEC such
> as
> $DUP, $MOVE and $COPY, and the multiple file support is doesn't always
> work
> as expected. Actually I think that most of the issues with multiple file
> are
> that it doesn't work as I expect....
>
>
> Dave
> G4UGM
>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

[kerravon86]

--- In H390-VM@..., "vk2kad" <vk2kad@...> wrote:
>
> It will be tricky to have multiple 3278 models like mod 4 and mod 5.
>
> As I attach 3270 sessions to Hercules, they just get added
> to the next available port. So making the session match the
> device type will require good alignment.

1. Why do you want to have different models?

2. How do real terminals solve this problem and can you
have the same solution?

> There also seems to be diffences in how some emulators behave
> - if I try wc3270 as a mod 4 I get a 24x80 screen with half a
> logo and the logon sequence won't work.

Sounds like a bug.  Can you see if the latest version
of wc3270 has the problem and then report it to the
author? Last time I reported a bug to him he fixed it
in under an hour or something (can't remember, would
have to look it up).

BFN.  Paul.

[Dave Wade]

> -----Original Message-----
> From: H390-VM@... [mailto:H390-VM@...] On Behalf
> Of kerravon86
> Sent: 30 July 2009 23:13
> To: H390-VM@...
> Subject: [H390-VM] Re: Large screen support in Six Pack system
>
> --- In H390-VM@..., "vk2kad" <vk2kad@...> wrote:
> >
> > It will be tricky to have multiple 3278 models like mod 4 and mod 5.
> >
> > As I attach 3270 sessions to Hercules, they just get added
> > to the next available port. So making the session match the
> > device type will require good alignment.
>
> 1. Why do you want to have different models?
>

Well to test how things work?

> 2. How do real terminals solve this problem and can you
> have the same solution?
>

They don't. Modern VM systems use query commands to enquire what the screen
size is and adjust the Control Blocks accordingly.

> > There also seems to be diffences in how some emulators behave
> > - if I try wc3270 as a mod 4 I get a 24x80 screen with half a
> > logo and the logon sequence won't work.
>

I tried the latest wc3270 on a modified 6-pack with 3278Model4's defined and
it seems to work fine. There does seem to be an issue where the terminals
are connected before VM is IPL'd so I think something is not quite right,
but I am pretty sure the old 5-pack had the same problem. Its just no one
ever pre-connected screens....

Btw I am using Windows/7 and a Hercules from March...

> Sounds like a bug.  Can you see if the latest version
> of wc3270 has the problem and then report it to the
> author? Last time I reported a bug to him he fixed it
> in under an hour or something (can't remember, would
> have to look it up).
>
> BFN.  Paul.
>
>

[vk2kad]

All

I just wanted to thanks Dave and others for their help.

I was able to work out how to get the zip file onto my CMS and now it is all working just fine.   The "mother" document is extremely useful and very readable.

What I can't seem to get working is the "groupname" thingy.

Here is my definition >>>>
F 0010 3270 DSP  127.0.0.1
G 001F 3215 CON  127.0.0.1
H 00C0 3270 DSP  GROUP=3278-4
I 00C1 3270 DSP  GROUP=3278-4
J 00C2 3270 DSP  GROUP=3278-4
K 00D0 3270 DSP  GROUP=3278-3
L 00D1 3270 DSP  GROUP=3278-3
M 00D2 3270 DSP  GROUP=3278-3

When I put "3274-4" into the LUNAME on my Vista "Start a new terminal session" dialog box, Hercules says "Connection rejected, no available 3270 devices"

If I then via HERCULES "ATTACH 0C3 3270" I get a new device without a groupname which I can then connect to.

Seems I have missed something.

And one reason why I want to have multiple models - one of my emulators (Mocha) only does mod2 and mod3 - the Vista I'm using is a trial.  PCOMM does all but I get a few errors (PRG755).  MUSIC/SP seems to work without a hitch on all mods - except 5.

A question for Dave - is mod 5 in the pipeline???  It is the best for listings and syslog stuff.

Many thanks again
Bern - VK2KAD

[kerravon86]

--- In H390-VM@..., "Dave Wade" <g4ugm@...> wrote:
>
> > 2. How do real terminals solve this problem and can you
> > have the same solution?
>
> They don't. Modern VM systems use query commands to enquire
> what the screen size is and adjust the Control Blocks accordingly.

What about real terminals on real VM/370? Or was
there only one model of terminal back then?

BFN.  Paul.

[vk2kad]

--- In H390-VM@..., "kerravon86" <kerravon86@...> wrote:

>
> --- In H390-VM@..., "Dave Wade" <g4ugm@> wrote:
> >
> > > 2. How do real terminals solve this problem and can you
> > > have the same solution?
> >
> > They don't. Modern VM systems use query commands to enquire
> > what the screen size is and adjust the Control Blocks accordingly.
>
> What about real terminals on real VM/370? Or was
> there only one model of terminal back then?
>
> BFN.  Paul.
>

You guessed right Paul - "back then" there was a 3277-Mod1 (not sure of the screen size) and a 3277 Mod2 (24x80)   and a Mod2a that I never saw.  The were the first 'green screens'.   And of course you could use a line-mode terminal like a 3215 -


the 3278 and 3279 (colour) terminals came out later (late 70's I think)

Bern - VK2KAD

[Dave Wade]

Dave
G4UGM

> -----Original Message-----
> From: H390-VM@... [mailto:H390-VM@...] On Behalf
> Of vk2kad
> Sent: 31 July 2009 00:36
> To: H390-VM@...
> Subject: [H390-VM] Re: Large screen support in Six Pack system
>
> All
>
> I just wanted to thanks Dave and others for their help.
>
> I was able to work out how to get the zip file onto my CMS and now it is
> all working just fine.   The "mother" document is extremely useful and
> very readable.
>
> What I can't seem to get working is the "groupname" thingy.
>
> Here is my definition >>>>

Definition from where???...

> F 0010 3270 DSP  127.0.0.1
> G 001F 3215 CON  127.0.0.1
> H 00C0 3270 DSP  GROUP=3278-4
> I 00C1 3270 DSP  GROUP=3278-4
> J 00C2 3270 DSP  GROUP=3278-4
> K 00D0 3270 DSP  GROUP=3278-3
> L 00D1 3270 DSP  GROUP=3278-3
> M 00D2 3270 DSP  GROUP=3278-3
>

I have :-

01c0  3270 MODEL4
01c1 3270 MODEL4

in my Hercules config ....

> When I put "3274-4" into the LUNAME on my Vista "Start a new terminal
> session" dialog box, Hercules says "Connection rejected, no available 3270
> devices"
>
> If I then via HERCULES "ATTACH 0C3 3270" I get a new device without a
> groupname which I can then connect to.
>
> Seems I have missed something.
>
> And one reason why I want to have multiple models - one of my emulators
> (Mocha) only does mod2 and mod3 - the Vista I'm using is a trial.  PCOMM
> does all but I get a few errors (PRG755).  

There is a fix for VM to stop PCOMM PRG775ing. You need to correct the EQUs
in "dmkbox hrc101dk b" at labels DMKBXL02, DMKBXL03 and DMKBXL04 by "adding"
a "-2" to the calculation. I copied the "DMKBOX HRC101DK B" to MAINT's "A"
disk and edited it there. I then did a

compare dmkbox hrc101dk a dmkbox hrc101dk b

and the result was a little like this.

DMKBXL02 EQU   *-DMKBOX02-2                                    HRC101DK
DMKBXL02 EQU   *-DMKBOX02                                      HRC101DK
DMKBXL03 EQU   *-DMKBOX03-2                                    HRC101DK
DMKBXL03 EQU   *-DMKBOX03                                      HRC101DK
DMKBXL04 EQU   *-DMKBOX04-2                                    HRC101DK
DMKBXL04 EQU   *-DMKBOX04                                      HRC101DK

Once you have fixed DMKBOX HRC101DK rebuild DMKBOX

VMFASM DMKBOX DMKHRC

And re-build the nucleus as per previous instructions......
If you need a complete "DMKBOX HRC101DK B"  I have uploaded a zipped AWS
file to H390-VM

> MUSIC/SP seems to work without
> a hitch on all mods - except 5.
>
> A question for Dave - is mod 5 in the pipeline???  It is the best for
> listings and syslog stuff.
>

I haven't looked at MOD5 but its tricky as I think it needs a different type
of screen addressing, and whilst EDIT has variables for screen length ,
screen width is more or less hard coded....

> Many thanks again
> Bern - VK2KAD
>

Dave G4UGM

[Dave Wade]

> -----Original Message-----
> From: H390-VM@... [mailto:H390-VM@...] On Behalf
> Of kerravon86
> Sent: 31 July 2009 00:43
> To: H390-VM@...
> Subject: [H390-VM] Re: Large screen support in Six Pack system
>
> --- In H390-VM@..., "Dave Wade" <g4ugm@...> wrote:
> >
> > > 2. How do real terminals solve this problem and can you
> > > have the same solution?
> >
> > They don't. Modern VM systems use query commands to enquire
> > what the screen size is and adjust the Control Blocks accordingly.
>
> What about real terminals on real VM/370? Or was
> there only one model of terminal back then?
>

It only supported 24x80  

> BFN.  Paul.
>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

[vk2kad]

Some developments and more funnies

>
> Definition from where???...
>
> > F 0010 3270 DSP  127.0.0.1
> > G 001F 3215 CON  127.0.0.1
> > H 00C0 3270 DSP  GROUP=3278-4
> > I 00C1 3270 DSP  GROUP=3278-4
> > J 00C2 3270 DSP  GROUP=3278-4
> > K 00D0 3270 DSP  GROUP=3278-3
> > L 00D1 3270 DSP  GROUP=3278-3
> > M 00D2 3270 DSP  GROUP=3278-3
> >

This is the display I get when I press ESC in the Hercules console - I snipped just the display devices - I use this because it shows devices I have ATTACHed.
>
> > When I put "3274-4" into the LUNAME on my Vista "Start a new terminal
> > session" dialog box, Hercules says "Connection rejected, no available 3270
> > devices"
> >


I am still seeing this


So, I downloaded the DMKBOX patch and applied it - success - PCOMM doesn't give me a PRG755 on a mod 4 - it still errors on a Mod 3 but a reset lets me proceed as normal and I get a valid Mod 3 session.

PCOMM also is honouring the groupname, I am not sure why Vista isn't doing it for me.

A few steps forward - just like it was in the 70s

Bern - VK2KAD.

[Dave Wade]

> -----Original Message-----
> From: H390-VM@... [mailto:H390-VM@...] On Behalf
> Of vk2kad
> Sent: 31 July 2009 02:20
> To: H390-VM@...
> Subject: [H390-VM] Re: Large screen support in Six Pack system
>
> Some developments and more funnies
> >
> > Definition from where???...
> >
> > > F 0010 3270 DSP  127.0.0.1
> > > G 001F 3215 CON  127.0.0.1
> > > H 00C0 3270 DSP  GROUP=3278-4
> > > I 00C1 3270 DSP  GROUP=3278-4
> > > J 00C2 3270 DSP  GROUP=3278-4
> > > K 00D0 3270 DSP  GROUP=3278-3
> > > L 00D1 3270 DSP  GROUP=3278-3
> > > M 00D2 3270 DSP  GROUP=3278-3
> > >
> This is the display I get when I press ESC in the Hercules console - I
> snipped just the display devices - I use this because it shows devices I
> have ATTACHed.

AHA, as I usually run Hercules in FISH's gui I seldom see that screen.

> >
> > > When I put "3274-4" into the LUNAME on my Vista "Start a new terminal
> > > session" dialog box, Hercules says "Connection rejected, no available
> 3270
> > > devices"
> > >
>

From what you say below this may be a vista issue. Can you set
TN3270/TN3270E modes in Vista? If so try the latter.

>
> I am still seeing this
>
>
> So, I downloaded the DMKBOX patch and applied it - success - PCOMM doesn't
> give me a PRG755 on a mod 4 - it still errors on a Mod 3 but a reset lets
> me proceed as normal and I get a valid Mod 3 session.
>

I see why now "DMKBOX HRC370DK" undoes the fix. It needs to have the same
changes made. So the lines at the end of the logos that say:-

DMKBXL02 EQU   *-DMKBOX02

Need to say

DMKBXL02 EQU   *-DMKBOX02-2

These calculate the length of the data stream that's patched back in the top
of the logo via the "AL2" op code. This is two bytes long so you need to
take 2 bytes off the length calculation....

> PCOMM also is honouring the groupname, I am not sure why Vista isn't doing
> it for me.
>

May need to set TN3270E if it has that option.

> A few steps forward - just like it was in the 70s
>

Yup, and the 80s

> Bern - VK2KAD.
>
Dave
G4UGM

[Fran Hensler]

>--- In H390-VM@..., "vk2kad" <vk2kad@...> wrote:
>>
>> It will be tricky to have multiple 3278 models like mod 4 and mod 5.
>
On Thu, 30 Jul 2009 22:13:08 -0000 kerravon86 said:
>1. Why do you want to have different models?
 
On my real z/VM (not on Hercules) I run with 5 different models,
each for a different application.  I use screens as large as 60
x 150. Why would I want a screen like that?  Well I can XEDIT 2
files in split screen mode and see the two files side by
side.  I also have an application that barfs on any screeen
other than model 2.  I haven't tried different models on VM/370
yet but I intend to try.
 
/Fran Hensler at Slippery Rock University of Pennsylvania USA for 46 years
    mailto:fjh@...  http://zvm.sru.edu/~fjh  +1.724.738.2153
              "Yes, Virginia, there is a Slippery Rock"
--------------------------------------------------------------------------

[Fran Hensler]

On Thu, 30 Jul 2009 23:57:14 -0000 vk2kad said:
>You guessed right Paul - "back then" there was a 3277-Mod1 (not sure of the screen size) and a 3277 Mod2 (24x80)   and a Mod2a that I never saw.  The were the first 'green screens'.   And of course you could use a line-mode terminal like a 3215 -
>
The Mod2a was used as a system console.  I think it displayed
20 lines from VM and the bottom of the screen displayed system
information like CPU usage.
 
/Fran Hensler at Slippery Rock University of Pennsylvania USA for 46 years
    mailto:fjh@...  http://zvm.sru.edu/~fjh  +1.724.738.2153
              "Yes, Virginia, there is a Slippery Rock"
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[au1john]

> 60 x 150.

Fran,
Are you sure it is not 62 x 160?
Full screen 3290.. oh how I miss that. I used a real 3290 for many years.

PCOMM will run 62 x 160 and I used that as well, but my current employer's
system doesn't :(  I have to be content with Model 5 for viewing syslog and
listings.

And, in case any one is following it, the 3277 Model 1 was 12 x 40. The
physical device took as much desktop as a 3277 Model 2 and was used for data
entry mainly. Programmers didn't use the model 1. They were still using 80
column cards back then. I guess the saving was in the CRT, some logic boards
and maybe in the power supply.  

[Fran Hensler]

I just verified that it is 60 x 160, not 60 x 150.

This is a custom size that fits very nicely on my 19 inch monitor.
I use HostExplorer and the font is not good on 62 x 160 so I use 60
lines.

Do you remember the 2260s?  They were 12 x 80.  CICS had an
emulation mode to display the 260 screens on a 3277 Model 2.
The display was on lines 1, 3, 5 etc so it looked like a full
screen.

/Fran Hensler at Slippery Rock University of Pennsylvania USA for 46 years
    mailto:fjh@...  http://zvm.sru.edu/~fjh  +1.724.738.2153
              "Yes, Virginia, there is a Slippery Rock"
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On Fri, 31 Jul 2009 20:19:11 +1000 au1john said:
>
>
>> 60 x 150.
>
>Fran,
>Are you sure it is not 62 x 160?
>Full screen 3290.. oh how I miss that. I used a real 3290 for many years.

[Tony Harminc]

2009/7/30 vk2kad <vk2kad@...>:

> You guessed right Paul - "back then" there was a 3277-Mod1 (not sure of the screen size) and a 3277 Mod2 (24x80)   and a Mod2a that I never saw.  The were the first 'green screens'.   And of course you could use a line-mode terminal like a 3215 -

The Mod1 (12x40) came out at the same time as the Mod2, i.e. they were
the original 3270s. However the Mod1 was never supported by what we
now think of as the common systems of the day (TSO, CP/CMS); it was
really a data entry device used with things like Data/360. Probably
CICS supported it, but it was really too small a screen for editing
programs.

The 3277 series never had any other screen sizes, to my knowledge.

The Mod2a came much later, and wasn't really a piece of 3270 hardware,
but rather was an artifact of the mini controller built in to the
4341. It stole some of the screen real estate at the bottom of a
standard Mod2, and used it for system status info. Why they didn't
just use a Mod3 or Mod4, and present it to the OS as a Mod2, I don't
know. Probably a case of the hardware guys having no idea how much
pain they were causing the software people.

> the 3278 and 3279 (colour) terminals came out later (late 70's I think)

The 3278 was late 1970s, and the 3279 early 1980s. These were all part
of the 3274 architecture that moved logic from the terminals into the
controller to save money (and make them run slower, as Lynn Wheeler
has pointed out many times).

Tony H.

[fish-8]

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Hash: SHA1

vk2kad wrote:

[...]
> > > When I put "3274-4" into the LUNAME on my Vista "Start a new
> > > terminal session" dialog box, Hercules says "Connection rejected,
> > > no available 3270 devices"
>
> I am still seeing this
>
> So, I downloaded the DMKBOX patch and applied it - success - PCOMM doesn't
> give me a PRG755 on a mod 4 - it still errors on a Mod 3 but a reset lets
me
> proceed as normal and I get a valid Mod 3 session.
>
> PCOMM also is honouring the groupname, I am not sure why Vista isn't doing
it
> for me.

Bern, I'm curious whether using a non-numeric group name would help any? (or
at least one that doesn't start with a number). Try using what Dave's using
("MODEL4") in both Herc and Vista3270. I'm curious as to whether that makes
any difference or not.

Thanks.

- --
"Fish" (David B. Trout) - fish@...
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[vk2kad]

Hi Fish

I thought of that too  - changed to groupname of MOD4 with no difference.

My Hercules setup is OK - most other emulators I have that suppoort LUNAME are behaving as expected. Vista is fine in both Mod3 and Mod4 if I don't use groupname - it just takes a little juggling, If I have no available 3270 devices, I just ATTACH a new device at either a Mod3 or Mod4 defined address and Vista finds it as the next available session. I'm only trialling Vista so I'll probably stay with PCOM - it's slow to startup but does everything I want.

Cheers
Bern - VK2KAD

>
> Bern, I'm curious whether using a non-numeric group name would help any? (or
> at least one that doesn't start with a number). Try using what Dave's using
> ("MODEL4") in both Herc and Vista3270. I'm curious as to whether that makes
> any difference or not.
>
> Thanks.