Picked up at a good price off ebay. Has a KDJ processor, as well as a dual board Matrox graphics board.
A wirewrapped set seems to be connected to another board which may be for an EGA or other terminal as well. It will take reverse engineering to figure out.
L AB R CD
1 M8192 <b>
2 M8067LB ==
3 unk ww <1> <b>
4 <b> M8578
5 unk ww <2> M8043
6 Matrox1 ==
7 Matrox2 ==
8 M8639 ==
DEC M8192 Processor PDP 11/73 KDJ11-A
DEC M8067LB. 512KB memory board.
DEC M8578 Universal PROM Module MRV11-D
DEC M8043 DLV11-J Quad Serial
DEC M8639 RDRX Disk Controller Board for PDP 11
|Matrox card set view|
It seems that I have the manual for both the QRGB/graph and QRGB/alpha.
Both use the 6545 CRT controller, which I believe is equivalent
to the 6845. At startup the registers that control it are loaded.
The CRTC register to be read/written is selected by writing to
the address register, and then the selected register can be
read/written by writing to the control register.
That is, it looks like two byte wide I/O ports, one to select
the register (764000) and one to read/write the selected register
R0 horizontal total-1
R1 horizontal displayed
R2 horizontal sync-1
R3 sync width (vertical in high 4 bits, horizontal in low 4 bits)
R4 vertical total-1
R5 vertical total adjust
R6 vertical displayed
R7 vertical sync-1
R8 interlace and skew
R9 maximum raster address
R10 cursor start
R11 cursor end
R12 start (high)
R13 start (low)
R14 cursor (high)
R15 cursor (low)
R16 light pen (high)
R17 light pen (low)
The vertical timing is in character rows, except for vertical adjust
which adds the appropriate number of scan lines.
To increase the vertical frequency decrease R4 and/or R5.
Change R7 as appropriate to keep the display centered.
Ian King / Pete Turnbull discussion about a similar /11 system
List: classiccmp Subject: RE: PDP-11 bootup From: Ian King <IanK () vulcan ! com> Date: 2009-03-26 14:58:20 The Data Systems Design A44324 board is to interface a DSD440 to a Qbus. ISTR the \ other DSD board is probably another DSD440 interface - they also made them for Unibus \ and Omnibus. -- Ian ________________________________________ From: email@example.com [firstname.lastname@example.org] On Behalf Of Pete \ Turnbull [email@example.com] Sent: Thursday, March 26, 2009 1:32 AM To: On-Topic and Off-Topic Posts Subject: Re: PDP-11 bootup On 26/03/2009 05:34, John Floren wrote: > Here is a complete list of the boards in my system, as removed from > top to bottom (this was a rack mount unit) > 1x M8192 > 1x M7195 > 1x mysterious quad-height board from DEC; I can only find labels > saying "PC304135-I4", "0202", and "Rear PSW1-0" > 2x Matrox QRGB-G-64/4 boards > 1x Matrox QVAF-512/8A (or QVAF-5/2/8A, hard to read) > 1x Dataram 40903 (memory? It's got tons of little ICs) > 1x M7941 > 1x M7555 M8192 is a dual-height KDJ-11A for an 11/73 and as Jerome pointed out that has no bootstrap. Possible reasons for being left at the ODT prompt include the HALT switch being on, or there being no bootstrap anywhere else. However, the next board, M7195, is a multifunction MXV-11B, which probably does have a bootstrap on it. Look for a pair of EPROMs on it. The manual is around the net, and I expect there's a copy on bitsavers. The KDJ-11 doesn't have all the ODT commands that some earlier QBus processors have. "G" is the command to "Go" to an address. "P" is the command to "Proceed" without initialising the bus. The only other commands on a KDJ-11 are slash ('/'), 'R', carriage-return and linefeed. I don't know exactly what the next few boards are, though I know Matrox made video boards for a variety of systems (DEC and S100 at least) and a QRGB is some sort of framestore and QVAF is a digitiser, I think. The Dataram board probably is memory, especially if densely packed with an array of chips. The chips numbers should tell us. M7941 is a DRV-11 parallel interface, which might have been used for a printer or simply for some other digital I/O to/from another device. M7555 is an RQDX3 MSCP disk controller, which interfaces via a breakout board to a dual floppy drive and/or one or more ST412-style hard drives. Are there disks and cables in the system? Thinking of that, what type of box is this in? What does the front panel look like? Jerome suggested it might be a BA23, but this mixture of cards suggests to me that it might just as well be a system that was upgraded from something older, and that it could be a BA11S or BA11N. > Here are all the boards I have that were *not* installed: You appear to have boards from at least three systems... > 1x M9400 This is a terminator board for a much older QBus system. > 2x M7946 Each is an RXV11 controller for a dual RX02 8" floppy drive - not useful unless you also have those specific drives. > 1x TI GPIB11V-1 I don't know, but I'd guess some Texas Instruments GPIB/IEEE-488 instrument interface, like DEC's IBV11. > 5x M8045 Older QBus memory card from an 11/23 or possibly 11/03 system. There will be a suffix to the 8045 that will tell us the size of each. The have parity, so possibly from an 11/23. > 1x Data Systems Design A44324 Dunno. > 2x M8043 DLV-11J quad serial line cards, mainly used with 11/03 and 11/23 systems. Later versions were renamed DLVJ1. They'd probably work (depending on the revision level) with your 11/73, but as you have two serial lines on the MXV11, probably not very useful. > 1x M8192 Another KDJ-11A CPU. > 1x DT 2766 Dunno. > 1x M7195 Another MXV-11 multifunction card. > 1x M8059 MSV-11L memory from an early microPDP-11, either 128KB or 256KB. > 1x M7270 This is an old dual-height LSI-11/2 CPU from an 11/03 system. > 1x 3com board, all I can find is "QE serial 0223-01". It's dual-height > 1x Data Systems Design 804140 Dunno. > 1x M9400 Terminator for that LSI-11/2 processor system. Does the number have a suffix? There were several version, some with bootstraps. > 4x M8013 Here you have the upper halves of four RLV11 disk controllers. These each need to be paired with an M8014 to do anything. They're from an 11/03 or early 11/23 system. > 1x M7856 A DL-11W serial line and line-time clock from a Unibus system. Don't plug this in to your Qbus! > 2x Matrox QRGB-G-64/4 Matrox framestore, I believe. -- Pete Peter Turnbull