I just had a bout with Colon Cancer and will have to start downsizing my
Computer collection which goes back to the early 80's got some S-100
stuff then PC's from the first thru XT, AT, 286, 386, 486's, 586, up to
PII's
I also have a complete IBM Series/! 110V half rack and full rack and
spare External floppy. Plus 4978, some 3101's some TI 810 printers
Cabling. Everything has to go. I also have a Pair of NEC APC's that run.
Got two old IMS 8000 8080 cabinets. Have some S-100 cards and 8"drives.
Got a Teletek Systemaster 65K CP/m SBC that used to work. even a boot
floppy and Docs. Got a Mariposa Design 64K Static Memory Board plus Manual.;
Even have a Tarbell SBC 8-16 that used to run Got all the Boots and Docs
Boy Am I Puter POOR. Got a N* Horizon and a ton of Cards thats up for Grabs.
Got a Cromemco ZPU and a 16K static card Plus an 8K ByteSaver fully
populated sans Proms.
Got a ADS Promblaster wating for one chip. Found one at Unicorn but need
to sell something to get the Bread to purchase
Got a Advanced Digital Corp S-100 MFM Controller but not sure of its
Status.
Got a Tarbell FDC 1011C and a 1011D Fully populated that ought to work
Got two Vector Graphic CPUs and a Z80
Got some spare Compu-Pro cards 8085, Disk1 that needs fixing, Disk3,
couple RAM22.s RAM17.s Interfacer 3 and 4 that I may put up if the
price is right
Looking for Shipping and Handling and a few Bucks to put my pocketbook
to rest.
I'd go the E-Bay Route but they only allow Credit cards for PayPal and I
don't have one. I am strictly "Cash on the Barrel head" which includes
Money Orders
My E-Mail is good if anyone is interested.
I am located just NW of Milwaukee in Menomonee Falls right off of US
41-45 for PICK-UPS
I will be posting Vintage Computer Market Place and Comp.os.cpm and
Maybe even E-BAY
Bob in Wisconsin
> From: Ian King <IanK at vulcan.com>
>
> More than one business has been brought down by being too greedy....
>
> -----Original Message-----
> From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of dwight elvey
>
> Well, that ends my ebay usage.
> Dwight
A more accurate statement is that sellers will no longer be able to ADVERTISE
that they will accept checks or money orders, but sellers will still be able to
accept them provided the percentage doesn't go over some amount known only to
oBay. But the limitation on checks, money orders, AND cash don't apply to autos,
mature audiences, and I think one other catagory.
Regardless, I quit selling back in May because of the oBay/PayPal fraud
protection policies in place among many other reasons.
> From: "bfranchuk at jetnet.ab.ca" <bfranchuk at jetnet.ab.ca>
>> For what it's worth, I'll take money orders from you guys even if I
>> can't
>> advertise as such.
>>
>>
> That is not the problem... Ebay's check out will be set up only to
> take
> pay-pal
> as the only way to pay in the menu system.
No, eBay will still allow cash on collection I understand. How do they
know it was shipped and a cheque sent?
>
>Subject: Re: Z80 home brew with FDC
> From: Eric Smith <eric at brouhaha.com>
> Date: Sun, 21 Sep 2008 14:43:09 -0700
> To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
>
>Alexis wrote:
>> The other thing that puts me off is the data clock separator. How are you
>> doing this?
>
>I can't speak for Andrew, but if you're not using an FDC with a built-in
> data separator, the easiest way to do it is to use the SMC 9216, 9229,
>or 9239 digital data separator chips, some or all of which were
>second-sourced by Western Digital. Of course, they were obsoleted by
>the newer FDCs with internal data separators.
It can also be done with a small amount of ttl. Of course the 37C65 if
you can find it or salvage it off an old PC floppy/ide board will be
far lower parts count.
Allison
>
>Eric
> There has been a lot of activity recently among the Apple
> II/IIgs crowd about using the combination of a cheap SCSI
> to IDE bridge and an IDE to CF adapter to use Compact
> Flash memory cards in their computers.
>
> This apparently is working quite well and after doing some
> research I've seen examples of people using this set up
> to replace dead SCSI drives in vintage Macs, Suns and at
> least one NeXT workstation.
>
> There is a vendor selling these adapters for $30 each.
> The eBay item # is 350044078177. I did some digging and
> the documentation can be found here:
> http://dl.acard.com/manual/english/aec-7720u&uw.pdf
>
> I hope you folks can use this to revive some bit of rare
> hardware that needed a new hard disk. :)
>
> I'm now looking to get one or two 8 bit ISA SCSI boards
> that I can use in a couple of 5160 PC/XT machines I've
> got. They need to be "bootable" cards. If you have one
> or two you want to part with, please contact me off list.
I'm not sure of the reasons for a long chain of conversions
like that. Small 50 pin SCSI disks should still be around,
and there should be a larger supply of IDE disks. Flash as a
PC disk has the problem of a limited number of writes. Flash
isn't forever and PC operating systems use fixed disks for
things like memory swap and temp files.
Am I missing something here?
Re: "For the record, the time I did it was in a DEC H754 -15V regulator
brick (which is, of course, a switcher). I had it on dummy load, so I knew
it wasn't really being asked to supply too much current, but there was no
output. I lifted the collector lead of the current sense transistor and
switched on. BAD MISTAKE!. The crowbar was firing (incorrectly, the zenner
diode had failed), so there genuinely was an overcurrent situation. The
result was that 4 of 5 transistors fialed (some were blown apart), the
current sense resisitor burnt out (I think it actually glowed) and the fuse
blew."
Isn't it amazing how nasty electricity can get once you get it pissed off?
> Small 50 pin SCSI disks should still be around
Checked their prices lately?
SCSI - IDE bridges are also drying up.
> Flash isn't forever
Usefulness depends on the OS. Many don't swap.
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Folks,
Don't know much about RT11, but this looked like a nice set of disks:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=260290011599&ssPageNam…
Regards, Mark
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This post is addressed to users of Ersatz-11. Many of you are aware
that my addiction is running software for the PDP-11 architecture under
the RT-11 operating system. While those of you who use RSX-11 or
RSTS/E may also be interested, I am not sure how to port the PDP-11
portion of the software to a user environment under RSX-11 or RSTS/E.
Specifically, explicit access to the IOPAGE Registers is required. RT-11
allows access either via the Current Data space if the user is able to run
using an unmapped monitor or as a privileged job under a mapped monitor.
In addition, if the user is running as a Virtual Job using VBGEXE under a
mapped monitor, it is possible to use the .Poke EMT request to make the
IOPAGE Registers available via the Previous Data space. If it is possible
under RSX-11 or RSTS/E to meet that requirement, then the enhancements
specified in this post can also be used under these two operating systems.
About 5 years ago, John Wilson made available a plugin named EMEM.DLL
which allowed an RT-11 user to explicitly access the memory of the PC via
four IOPAGE Registers. Early in September of 2008, John made the final
changes to allow EMEM32.DLL to perform the same explicit access of PC
memory under V5.2 of E11. While John's version makes only 8 MB of such
memory available, it is possible to use WatCom to assemble the source code
and link the OBJ file with many enhancements, including any memory size that
the operating system (in this case DOS or some version of Windows) and
hardware on the PC supports. With the current systems being run under
Windows XP, I am confident that 1 GB of memory can be used.
My interest is to use an enhanced EMEM32.DLL when sieving for Prime
Numbers as one example where very large work RAM will substantially
improve the speed of an algorithm. The present 4 IOPAGE Registers
are used in the following manner:
Mov @#CSR+0,R0 ;Fetch word at address CSR+04/CSR+06
Mov @#CSR+2,R0 ;Fetch word as above, auto-increment word
address
Mov @#CSR+4,R0 ;Fetch low 16 bits of address
Mov @#CSR+6,R0 ;Fetch high 16 bits of address
Increasing the number of IOPAGE Registers will facilitate access to
Byte, Word,
Double Word and Quad Word values. Also included will be the ability to Add,
Subtract and Multiply (initially only unsigned) 16 bit, 32 bit and 64
bit values.
The other set of changes which are exclusively for RT-11 are the enhancement
of the HD(X).SYS device driver. Initial tests using HD(X).SYS have provided
the confidence that I/O throughput is approximately double that for the MSCP
or DU(X).SYS device driver. While the initial version of HD(X).SYS which
John has made available supports only 32 MB devices, adding a DU: type
translation table will allow support for up to 2 TB devices. It should
be possible
to modify the simple device drivers for RK05s under RSX-11 and RSTS/E
to support the HD: device under E11. However, I can't help with this
myself.
If anyone is interested, please respond with suggestions and questions. If
no one responds, I will proceed to enhance HD(X).SYS and EMEM32
after which I will send any hobby user a copy if requested. If any
commercial
user of Ersatz-11 is interested, I will first contact John Wilson to be
sure that
such use is allowed.
Sincerely yours,
Jerome Fine
> > Small 50 pin SCSI disks should still be around
>
> Checked their prices lately?
No, I haven't. I was just considering the fate of a bunch of
them in my cellar this weekend. Good thing I didn't toss
them. I also have a few boxes of small IDE disks.
> SCSI - IDE bridges are also drying up.
That's disturbing.
