25 Nov
2020
25 Nov
'20
10:01 p.m.
Tom Uban fully built "Spare Time Gizmos" SBC6120 based computer complete
with front-panel and IO board is on its way to me. :-)
I am still looking to buy one of the following PDP-8 models:
PDP-8/F
PDP-8/E
PDP-8/L
PDP-8/I
PDP-8/M
Dave, Chris, Paul and Robert I am looking forward to getting more details
from you.
I am happy to pay a reasonable price for the right PDP-8, so a seller won't
be disappointed.
Thanks and best regards
Tom Hunter
26 Nov
26 Nov
2:28 a.m.
Tom,
If it has an IOB6120 then it the VT emulation kills the Fortran run time system in OS8.
Dave
G4UGM
-----Original Message-----
From: cctalk <cctalk-bounces at classiccmp.org> On Behalf Of Tom Hunter via
cctalk
Sent: 26 November 2020 06:02
To: General Discussion: On-Topic and Off-Topic Posts
<cctalk at classiccmp.org>
Subject: DEC PDP-8/E wanted - still looking
Tom Uban fully built "Spare Time Gizmos" SBC6120 based computer
complete
with front-panel and IO board is on its way to me. :-)
I am still looking to buy one of the following PDP-8 models:
PDP-8/F
PDP-8/E
PDP-8/L
PDP-8/I
PDP-8/M
Dave, Chris, Paul and Robert I am looking forward to getting more details
from you.
I am happy to pay a reasonable price for the right PDP-8, so a seller won't be
disappointed.
Thanks and best regards
Tom Hunter
5:07 p.m.
Hi Dave,
Could you please explain how exactly the VT emulation "kills" the Fortran
run time system in OS/8?
What is the fault? How do you trigger it? Have you got a Fortran code
snippet which reproduces the problem?
Was there some previous discussion about it answering my questions above?
I have a reasonable level of experience with VHDL and Xilinx ISE so maybe I
can fix it if I can reproduce it.
Thanks and best regards
Tom Hunter
On Thu, Nov 26, 2020 at 6:28 PM <dave.g4ugm at gmail.com> wrote:
Tom,
If it has an IOB6120 then it the VT emulation kills the Fortran run time
system in OS8.
Dave
G4UGM
-----Original Message-----
From: cctalk <cctalk-bounces at classiccmp.org> On Behalf Of Tom Hunter via
cctalk
Sent: 26 November 2020 06:02
To: General Discussion: On-Topic and Off-Topic Posts
<cctalk at classiccmp.org>
Subject: DEC PDP-8/E wanted - still looking
Tom Uban fully built "Spare Time Gizmos" SBC6120 based computer
complete
with front-panel and IO board is on its way to me. :-)
I am still looking to buy one of the following PDP-8 models:
PDP-8/F
PDP-8/E
PDP-8/L
PDP-8/I
PDP-8/M
Dave, Chris, Paul and Robert I am looking forward to getting more details
from you.
I am happy to pay a reasonable price for the right PDP-8, so a seller
won't
be
disappointed.
Thanks and best regards
Tom Hunter
27 Nov
27 Nov
2:29 a.m.
Tom,
This is the e-mail I got from Bob Armstrong..
Dave
=====================================================================
From: sparetimegizmos at yahoogroups.com <mailto:sparetimegizmos at yahoogroups.com>
[mailto:sparetimegizmos at yahoogroups.com]
Sent: 15 July 2015 15:53
To: sparetimegizmos at yahoogroups.com <mailto:sparetimegizmos at yahoogroups.com>
Subject: RE: [sparetimegizmos] Any builders of the SBC6120 in the UK
The FORTRAN RTS uses interrupts, whereas most OS/8 software does not, and so it reveals
bugs that are not otherwise apparent.
As I recall the problem was with the VGA/PS2 console implementation in the FPGA. Jim
didn?t handle clearing the flags and the interrupt request quite correctly, and it made
FORTRAN hang up in an interrupt loop. It should be easy enough to fix by revising the
VHDL, but I?m not sure Jim ever did. Make sure you have the latest IOB6120 firmware.
FWIW, FORTRAN does work with the SBC6120 onboard serial console enabled so you can use
the IOB so long as you?re not using the VGA console.
This was an issue for many people because it broke the ADVENTure game, which is also
written in FORTRAN :-)
Bob
From: Tom Hunter <ccth6600 at gmail.com>
Sent: 27 November 2020 01:08
To: Dave Wade <dave.g4ugm at gmail.com>
Cc: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
Subject: Re: DEC PDP-8/E wanted - still looking
Hi Dave,
Could you please explain how exactly the VT emulation "kills" the Fortran run
time system in OS/8?
What is the fault? How do you trigger it? Have you got a Fortran code snippet which
reproduces the problem?
Was there some previous discussion about it answering my questions above?
I have a reasonable level of experience with VHDL and Xilinx ISE so maybe I can fix it if
I can reproduce it.
Thanks and best regards
Tom Hunter
On Thu, Nov 26, 2020 at 6:28 PM <dave.g4ugm at gmail.com <mailto:dave.g4ugm at
gmail.com> > wrote:
Tom,
If it has an IOB6120 then it the VT emulation kills the Fortran run time system in OS8.
Dave
G4UGM
-----Original Message-----
From: cctalk <cctalk-bounces at classiccmp.org <mailto:cctalk-bounces at
classiccmp.org> > On Behalf Of Tom Hunter via
cctalk
Sent: 26 November 2020 06:02
To: General Discussion: On-Topic and Off-Topic Posts
<cctalk at classiccmp.org <mailto:cctalk at classiccmp.org> >
Subject: DEC PDP-8/E wanted - still looking
Tom Uban fully built "Spare Time Gizmos" SBC6120 based computer
complete
with front-panel and IO board is on its way to me. :-)
I am still looking to buy one of the following PDP-8 models:
PDP-8/F
PDP-8/E
PDP-8/L
PDP-8/I
PDP-8/M
Dave, Chris, Paul and Robert I am looking forward to getting more details
from you.
I am happy to pay a reasonable price for the right PDP-8, so a seller won't be
disappointed.
Thanks and best regards
Tom Hunter
3:07 a.m.
Hi Dave,
Thanks for Bob Armstrong's old email.
I have not seen Jim's VHDL code, but I am quite confident I can fix this.
Tom Urban wrote that the IOB6120 is misbehaving, so I will have to do some
fault finding or debugging anyway.
I would appreciate a short Fortran code snippet which reproduces the
problem.
I don't really want to have to learn how to play Adventure to reproduce
this. Games are not my thing except maybe chess.
Best regards
Tom Hunter
On Fri, Nov 27, 2020 at 6:29 PM <dave.g4ugm at gmail.com> wrote:
Tom,
This is the e-mail I got from Bob Armstrong..
Dave
=====================================================================
*From:* sparetimegizmos at yahoogroups.com [
mailto:sparetimegizmos at yahoogroups.com <sparetimegizmos at yahoogroups.com>]
*Sent:* 15 July 2015 15:53
*To:* sparetimegizmos at yahoogroups.com
*Subject:* RE: [sparetimegizmos] Any builders of the SBC6120 in the UK
The FORTRAN RTS uses interrupts, whereas most OS/8 software does not,
and so it reveals bugs that are not otherwise apparent.
As I recall the problem was with the VGA/PS2 console implementation in
the FPGA. Jim didn?t handle clearing the flags and the interrupt request
quite correctly, and it made FORTRAN hang up in an interrupt loop. It
should be easy enough to fix by revising the VHDL, but I?m not sure Jim
ever did. Make sure you have the latest IOB6120 firmware.
FWIW, FORTRAN does work with the SBC6120 onboard serial console enabled
so you can use the IOB so long as you?re not using the VGA console.
This was an issue for many people because it broke the ADVENTure game,
which is also written in FORTRAN :-)
Bob
*From:* Tom Hunter <ccth6600 at gmail.com>
*Sent:* 27 November 2020 01:08
*To:* Dave Wade <dave.g4ugm at gmail.com>
*Cc:* General Discussion: On-Topic and Off-Topic Posts <
cctalk at classiccmp.org>
*Subject:* Re: DEC PDP-8/E wanted - still looking
Hi Dave,
Could you please explain how exactly the VT emulation "kills" the Fortran
run time system in OS/8?
What is the fault? How do you trigger it? Have you got a Fortran code
snippet which reproduces the problem?
Was there some previous discussion about it answering my questions above?
I have a reasonable level of experience with VHDL and Xilinx ISE so maybe
I can fix it if I can reproduce it.
Thanks and best regards
Tom Hunter
On Thu, Nov 26, 2020 at 6:28 PM <dave.g4ugm at gmail.com> wrote:
Tom,
If it has an IOB6120 then it the VT emulation kills the Fortran run time
system in OS8.
Dave
G4UGM
-----Original Message-----
From: cctalk <cctalk-bounces at classiccmp.org> On Behalf Of Tom Hunter via
cctalk
Sent: 26 November 2020 06:02
To: General Discussion: On-Topic and Off-Topic Posts
<cctalk at classiccmp.org>
Subject: DEC PDP-8/E wanted - still looking
Tom Uban fully built "Spare Time Gizmos" SBC6120 based computer
complete
with front-panel and IO board is on its way to me. :-)
I am still looking to buy one of the following PDP-8 models:
PDP-8/F
PDP-8/E
PDP-8/L
PDP-8/I
PDP-8/M
Dave, Chris, Paul and Robert I am looking forward to getting more details
from you.
I am happy to pay a reasonable price for the right PDP-8, so a seller
won't
be
disappointed.
Thanks and best regards
Tom Hunter
6:43 a.m.
On 11/27/2020 6:07 AM, Tom Hunter via cctalk wrote:
Hi Dave,
Thanks for Bob Armstrong's old email.
I have not seen Jim's VHDL code, but I am quite confident I can fix this.
Tom Urban wrote that the IOB6120 is misbehaving, so I will have to do some
fault finding or debugging anyway.
I would appreciate a short Fortran code snippet which reproduces the
problem.
I don't really want to have to learn how to play Adventure to reproduce
this. Games are not my thing except maybe chess.
That's pretty simple. A "Hello world" program will probably show it.
??????? INTEGER INPUT(20)
??????? WRITE(4,1)
1?????? FORMAT(1X,'ENTER A STRING')
??????? READ(4,2)INPUT
2?????? FORMAT(20A1)
??????? WRITE(4,3)INPUT
3?????? FORMAT(1X, 'YOU SAID ', 20A1)
??????? STOP
??????? END
Create "TEST.FT" with that content, then "EXEC TEST.FT" at the OS/8
dot
prompt.
If you can successfully enter a string and get a result, then you're
probably not having interrupt issues.
??? -Rick
10:30 a.m.
On 11/27/2020 3:07 AM, Tom Hunter via cctalk wrote:
I don't really want to have to learn how to play
Adventure to reproduce
this. Games are not my thing except maybe chess.
Best regards
Tom Hunter
Adventure immediately types out a 4 or 5 line "room"
description, which
is in the initial case a step away from the building outside the cave.
any input should hang if this bug occurs from the descriptions of it.?
You won't have to do any inputs related to the game as it takes in and
analyzes all inputs.
I think you get back another description and "nothing happens" if you
type something that is rejected.
BTW? "Build" "enter building"? and "plugh" or
"xyzzy" should get a
response from the game if you want more bits of the game executed.
thanks
Jim
29 Nov
29 Nov
9:29 a.m.
New subject: circuit cellar magazines
I'm sorting through my stuff and have Circuit Cellar magazines issue 54-244 (missing
168 and 210).
Is anyone interested in these for $20+shipping?
--tom
9:34 a.m.
New subject: DEC VT1000 and VXT2000
I'm sorting through my stuff and have a DEC VT1000, VXT2000 and a few related boards.
Condition is unknown.
Pics available on request.
Any interest?
--tom
9:36 a.m.
New subject: circuit cellar magazines
I'm sorting through my stuff and have Heathkit H89A computer. Last time I messed (20
years ago) it
showed signs of life, but was not fully functional. I do have a manual for it.
Pics upon request.
Any interest?
--tom
9:37 a.m.
New subject: Heathkit H89A (was accidentally circuit cellar...)
I'm sorting through my stuff and have Heathkit H89A computer. Last time I messed (20
years ago) it
showed signs of life, but was not fully functional. I do have a manual for it.
Pics upon request.
Any interest?
--tom
2:21 p.m.
New subject: Heathkit H89A (was accidentally circuit cellar...)
where are you?
Steve
On 11/29/2020 9:37 AM, Tom Uban via cctalk wrote:
I'm sorting through my stuff and have Heathkit
H89A computer. Last time I messed (20 years ago) it
showed signs of life, but was not fully functional. I do have a manual for it.
Pics upon request.
Any interest?
--tom
30 Nov
30 Nov
11:45 a.m.
New subject: Heathkit H89A (was accidentally circuit cellar...)
?
TOM? WHAT? IS YOUR LOCATION? WHAT }T? IS? PHYSICAL? CONDITION? GREAT! A H89!?'WE HAVE?
H8? and H11? and HERO robot? Computer in museum? at SMECC? ?adding? the H89 would? be?
nice!?We? also? do need? a? H9 terminal i? think? the? number is? to go with? H8?
computer.? ?and? GASP!? one? of? the? heath analog? computers? should? we? be so lucky!?Ed
Sharpe Archivist for SMECC?On 11/29/2020 9:37 AM, Tom Uban via cctalk wrote:
I'm sorting through my stuff and have Heathkit
H89A computer. Last time I messed (20 years ago) it
showed signs of life, but was not fully functional. I do have a manual for it.
Pics upon request.
Any interest?
--tom
29 Nov
29 Nov
9:53 a.m.
New subject: sun microsystems sunfire v100
I'm sorting through my stuff and have two Sunfire V100s. I had one working 20 years
ago and don't
recall the state of the other.
Current status unknown.
Pics upon request.
Any interest?
--tom
9:54 a.m.
New subject: xylogics annex three terminal server
I'm sorting through my stuff and have a Xylogics Annex Three terminal server
(w/cables).
Complete, but status unknown.
Pics upon request.
Any interest?
--tom
26 Nov
26 Nov
9:47 a.m.
We'll see. At the moment I'm not interested in selling either of the
8/L's. The 8/E is a bit more complicated, will have to think about that.
C
On 11/26/2020 1:01 AM, Tom Hunter via cctalk wrote:
Tom Uban fully built "Spare Time Gizmos"
SBC6120 based computer complete
with front-panel and IO board is on its way to me. :-)
I am still looking to buy one of the following PDP-8 models:
PDP-8/F
PDP-8/E
PDP-8/L
PDP-8/I
PDP-8/M
Dave, Chris, Paul and Robert I am looking forward to getting more details
from you.
I am happy to pay a reasonable price for the right PDP-8, so a seller won't
be disappointed.
Thanks and best regards
Tom Hunter
8:53 p.m.
at smecc we have an extra? first model classic-8? ? in a? rack? the? blue? one? that? a?
white? desk? section can mount to? ? ?not the Plexiglas surrounds? ?do not? know what it?
would? take? to plexi one? but this is in a? rack.? downside? it is at the back of? a
warehouse? so it? would? not? be? fast unless? enough? extra? money? was? there? ?for a?
work? crew? to? unload... extract? and? reload.?cost??? to? be? determined? ?but? a? full?
?hp series? III? 3000? could? be? part? of? the? fee!ed sharpe? ?smeccIn a message dated
11/25/2020 11:02:16 PM US Mountain Standard Time, cctalk at classiccmp.org writes:?
Tom Uban fully built "Spare Time Gizmos" SBC6120 based computer completewith
front-panel and IO board is on its way to me.? :-)?I am still looking to buy one of the
following PDP-8 models:?PDP-8/FPDP-8/EPDP-8/LPDP-8/IPDP-8/M?Dave, Chris, Paul and Robert I
am looking forward to getting more detailsfrom you.?I am happy to pay a reasonable price
for the right PDP-8, so a seller won'tbe disappointed.?Thanks and best regardsTom
Hunter
1483
days inactive
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16 comments
8 participants
participants (8)
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ccth6600＠gmail.com -
couryhouse＠aol.com -
cz＠alembic.crystel.com -
dave.g4ugm＠gmail.com -
jwsmail＠jwsss.com -
rick＠rickmurphy.net -
shumaker＠att.net -
tom＠figureeightbrewing.com