On Mar 10, 18:42, Brian Roth wrote:
> I am looking for a complete PDP8e. It doesn't have to win any beauty
> pagents but I would like it functional. I have many items to trade or a
> combination trade and money. I have a variety of workstations, servers,
> SUN, APPLE, COMPAQ , DAT drives,etc.
Well, that makes at least (!) two of us :-) I've been looking for one for
years :-(
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
it's been quite some time since Ive picked up anything new. I've reached
critical mass and have had to pass by on machines which I already own except
for IBM PS/2s which I salvage for adaptor cards. anyway, just this past week,
I beat out several others and responded to an email about a free kaypro 10.
Its in great shape and will get the disks for it later hopefully. also got an
amstrad PC20 with second floppy drive and the special mouse, two mac quadra
630 and just today got an IBM 5364 which is a S/36 PC complete with the
display unit and funky cables. didnt get the keyboard though. Later, I
discovered I should''ve gotten the host IBM PC 5150 that was there too since
it had a special card in it. I will try to go back and rescue that. Not much
info can be found on the 5364, but will make a good addition to my IBM PC RT
6150.
--
DB Young Team OS/2
old computers, hot rod pinto and more at:
www.nothingtodo.org
I have a mostly complete, untested rk611 controller available for sale or
trade. No reasonable offer refused. As a matter of fact, if you have a 5.25
inch DEC style filler panel or the jumpers that connect a 11/34 CPU to a
FPP, I'll trade you for that.
The controller includes M7900, M7901, M7902, M7903 modules (one module
missing) and the RK611 backplane.
Oh yea, buyer pays shipping.
Thanks,
Bill
I am looking for a complete PDP8e. It doesn't have to win any beauty
pagents but I would like it functional. I have many items to trade or a
combination trade and money. I have a variety of workstations, servers,
SUN, APPLE, COMPAQ , DAT drives,etc.
Please reply off list.
Brian.
On Mar 10, 12:41, Paul Williams wrote:
> There are four socketed chips together, labelled E40, E45, E52 and E56.
> Does anyone have the schematics and know what these contain?
They're the VT1xx code ROMs. In a VT100, they are contain ROMs with part
numbers 23031-E2, 23032-E2, 23033-E2, and (surprise, surprise) 23034-E2.
In a VT100-WC, -WK, or -AC, they contain 23095-E2, 23096-E2, 23139-E2,
23140-E2; the -WC and -WK variants also have an extra character ROM,
23094-E2. A VT125 or VT105 should have the same as a plain VT100 except
that the 23031-E2 is replaced with a 23061-E2.
> The fourth chip, E45, is labelled differently on the two boards
>
> Board 1. Signetics K8340 / CN7295N / 23-033E2-00 / (c) DEC 1978
> Board 2. [logo S] 8015E / C48008 / 23033E2
>
> I assume that 23033E2 is DEC's part number, but I can't find references
> for either 8340 or 8015. Is this another ROM?
Yes, 23 means a mask ROM, the next three digits are the ROM code number,
and the E2 is the size (2K in this case; E3 is 4K, E4 is 8K, etc). 8340
and 8015 are probably the date of manufacture.
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
On Mar 10, 14:16, Lawrence LeMay wrote:
Yep, those rows are in my table too. Now I know where I got it :-)
I've also got a table of ROMs for the AVO board. Is that from the same
place? Any more?
To save Paul some retyping, if he wants to put it on a web site, here's the
file:
VT100 Series ROMS
=================
Terminal Board
--------------
ROM0 ROM1 ROM2 ROM3 Chargen
VT100 031 032 033 034 -
or 061 - - - -
VT100-WC,-WK 095 096 139 140 094
VT100,VT1xx-AC 095 096 139 140 -
VT132 095 096 097 098 -
or 180 181 182 183 -
VT125, VT105 061 032 033 034 -
Advanced Video Option Board
---------------------------
A B C D
VT100 - - - -
VT100-WA,-WB 069 - - -
VT100-WC,-WK 152 - - -
VT1xx-AC 284 185 - -
or 186 187 - -
VT132 099 100 - -
or 236 237 238 239
or 224 225 226 227
VT125,VT105 - - - -
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
On Mar 10, 14:16, Lawrence LeMay wrote:
> And the VT132 has either 23095E2, 23096E2, 29097E2, 29098E2, OR
> 23180E2, 23181E2, 23183E2, 23183E2
>
> Now you have all the information from Table 5-7, from page 5-68 of
> the VT100 Series Video Terminal Technical Manual ;)
Yep, those rows are in my table too. Now I know where I got it :-)
I've also got a table of ROMs for the AVO board. Is that from the same
place? Any more?
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
> Has anyone used one of these before? Granted the speed is
>going to be limited by going through the parallel port, but it's an
>easier solution than finding and installing an ISA/EISA/MCA SCSI card
>for occasional use of a SCSI CD-ROM or some such item.
> Jeff
It will likely not be fast enough for a CDwriter. The only SCSI
interface
thats hard to find is the MCA as ISA/EISA is the same board and
generally available cheap (under 60$) if you dont need a bootable model.
Allison
