> From: Mattis Lind
>> we've also looked at what's in memory at that location, and the low
>> part of the text segment seems to be correct, but there was junk at
>> the top, around the target of the JSR (i.e. at 'csv'). Not just one
>> word, but everything around that location was wrong, which would
>> suggest to me that the cause is not a simple memory failure there.
>> I've suggested to Fritz that we look at that again, to see if what was
>> recorded before is accurate
> Would it be possible to insert a breakpoint or halt and run the
> program, insert original instruction and single step?
I'm not sure that's going to tell us much: the latest development is that
Fritz looked at the actual memory contents again, and it is once again
trash; _almost_ identical to what was there before:
PA:171600: 016162 004767 000224 000414 006700 006152 006702 006144
but with some extra 010000 bits:
PA:171600: 016162 004767 000224 000414 016700 016152 016702 016144
(It's not clear if this represents a real difference, or if that
front panel issue Fritz mentioned caused the contents to be displayed
incorrectly.)
The exciting thing is that if the latter really is what's in main memory,
that '16700 16152' at the PC of the MM trap could indeed generate the MM trap
we're seeing: it's "MOV 26364, R0", and that address is in segment (page) 1,
which is only 03500 long....
If so, i) we're down to one problem (good news), and our problem turns into
finding out how that section of the code got trashed (bad news). Which is not
going to be simple, alas, I suspect. I don't think it's the RK11, because
Unix reads the program image into system buffers in low memory, and that's
clearly working OK in the 'sleep;ls' case. (It may not use the exact same
buffers, though...) It then copies it out to the memory where it's going to
execute from, using an MTPI loop. So maybe the memory still has issues, or
maybe the MTPI isn't working with some main memory locations or or or...
Noel
This keyboard has now been sold!
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sales at elecplus.com
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Leslie is preparing a list.
She has also contacted another friend who is quitting the biz, to see if
they want to get rid of equip.
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sales at elecplus.com
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1 keyboard PN 3201072-01 still in plastic and foam (Type 5)
1 metallic type mousepad, never used
1 mouse 370-1170-01, used
1 cable 530-1594-01 used
1 cable 530-1662-01 new
1 cable 530-1442-02 used
1 battery holder that is plugged into the 530-1594-01, used, no battery
installed
These are in my stock. All fits in one box. Make offer.
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sales at elecplus.com
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Pics of equipment on request .
Hi, we occasionally get some.
For example, we have the following:
2x Phones ROLM 61000 in boxes (see photos) ('86 year of manufacture); Bunch
of (see photos):
FAX-MODEM USRobotics 33.6K Model 0459 PN: 00083907
FAX-MODEM USRobotics 56K Model 0701 PN: USR5686D
FAX-MODEM USRobotics 56K V.92 PN: 5686
Let me know what you think.
I'll keep you posted on any antique equipment we will be receiving.
Nick Makarovskiy,
nick at ictcompany.com
Office: +1-781-912-1717 x 710
Direct:+1-781-912-1710
Cell/WhatsApp: +1-617-309-8705
400 Tradecenter, Ste 5900
Woburn MA 01801
Not affiliated with seller, etc.
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sales at elecplus.com
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> From: Phil Pemberton
> * Anything not on this list ;)
The TRIX project at MIT-LCS did a 68K compiler very early on (soon after the
first 68K wa released)x, using Steve Johnson's Portable C Compiler as a base.
Noel
At 12:26 PM 2/6/2019, Ethan Dicks via cctalk wrote:
>OTOH, at home, I'd had an Amiga since 1986 and used a variety of
>native tools (Lattice C later SAS/C, and various assemblers either
>commercial or from a Fish Disk).
Somewhere I have the DOS-hosted C compiler for the Amiga that was part
of the first developer kits. I think they were Sage-hosted for a while, too.
- John
Preowned Barcode Ltd
John Gallant
Halifax NS Canada
PH (902) 468 8210
Cell (902)719 6031
Email: sales at preownedbarcode.com
This gent has stuff from the 80s and 90s in the barcode and scanner
departments.
Not affiliated with seller, etc.
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sales at elecplus.com
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Last May Steve auctioned off the assets, and and printer/plotter co bought
the name and website. Steve retired to Hawaii. All is gone L
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sales at elecplus.com
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> Date: Sun, 3 Feb 2019 22:22:42 +0100
> From: Pontus Pihlgren <pontus at Update.UU.SE>
> To: "General Discussion: On-Topic and Off-Topic Posts"
> <cctalk at classiccmp.org>
> Subject: Looking for Limited Function Board
> Message-ID: <20190203212242.GF24947 at Update.UU.SE>
> Content-Type: text/plain; charset=us-ascii
>
> Hi
>
> I'm restoring a PDP-8/a with the help of some
> friends. The CPU is now passing the MAINDECs I've
> thrown at it. The memory is a modern semiconductor
> board my friend Anders Sandahl made.
>
> This machine is pieced together from several others
> and the limited function panel I got does not match
> the backplane I have.
>
> My theory is the DEC simplified the design of the
> boardto cut costs and simpler design is not
> compatible. Mine is labeled (on the PCB):
>
> "LIMITED FUNCTION BD.
> 5411507
> 5011506C-P2"
>
> And the one I need is:
>
> "LIMITED FUNCTION
> 5411165
> 5011167"
>
> However, the picture I have of the other is not so
> good. I may have read the numbera wrong.
>
> I would very much like to buy one to finish this
> project.
>
> /P
F?r du inget napp s? ritar jag upp ett kort till dig, det borde g? att
flytta ?ver brytarna fr?n det du har. Lite synd att scrappa ett
originalkort bara, men ?r man f?rsiktigt s? man inte tar s?nder det s? g?r
det ju att ?terst?lla...
/A
