• Please review our updated Terms and Rules here

KDJ11-a and MXV11-B setup

mc68010

Experienced Member
Joined
Aug 9, 2012
Messages
140
Location
California
I have a BA23, a KDJ11-A M8192 cpu and a MXV11-B M7195 card I am trying to figure out. The roms in the MXV11 are labeled 146E4 and 146E5 which I think are just the stock DEC ones. I have the cpu in slot 1-ab and the the mxv11 in slot 2-ab. Nothing else. I am using the console back panel from an 11/23+ which works fine with the 11/23+ cpu.

I power it up and nothing ever comes out the serial port. The MXV11 leds cycle through various states and then repeat after a few minutes. The KDJ11 cpu's leds never come on. I think hey work because if I press the halt switch the halt led comes on. Are the cpu's leds routed to the MXV11's leds ? Am I supposed to ever get a boot prompt ? I think I have all jumpers to their defaults but, there is some wire wrap stuff I'll probably have to double check at some point.

I have two of the cpu and two of the MXV11. They all do the same thing in any combination.

I'm new to pdp stuff so, feel free to point out the obvious I should have thought of.
 
Thanks for that link. I have the manual but, it's a hard read for someone new to pdp and qbus. The one I have is a MXV11-BF which the person who wrote the FAQ seemed to have trouble figuring out himself. It doesn't look he was clear on it's operation either.

So, after finding a couple minor issues and a big one in that SLU1 is the console and not SLU0 as I assumed. Now it tells me it "No Device Ready after x tries". This makes sense as there are no other controllers or cards installed. I was able to send a break and I get a @ prompt. No idea what to do from there. Is the manual EK-MXVB2-UG "MXV11-B2 ROM Set User Guide" out there anywhere or something else that lists the commands for this ?
 
I have an M7195 MXV11-B with 23-145E4 / 23-146E4 EPROMs installed and I have used it with an M8192 KDJ11-A. Off the top of my head I don't remember what the default behavior is on power on as far as running diagnostic tests and autobooting. I'll have to put that configuration together again and see exactly what it does to refresh my memory.

-Glen
 
I have an M7195 MXV11-B with 23-145E4 / 23-146E4 EPROMs installed and I have used it with an M8192 KDJ11-A. Off the top of my head I don't remember what the default behavior is on power on as far as running diagnostic tests and autobooting. I'll have to put that configuration together again and see exactly what it does to refresh my memory.

-Glen

Looks like I found most of what I need here. http://www.cosam.org/computers/dec/pdp11-23/20080316.html

I needed to hit CTRL-C instead of BREAK to get a boot menu. Even has limited help. Guess I need to work on devices now. Are the diagnostic floppy images up somewhere for the KDJ11-A ?
 
Boot menu is useless unless you have a boot device like a drive of some sort. ODT is where it’s at! Until you get a boot device it may be best to set your system jumpers to start in ODT (@ prompt) you can examine the registers, look at or load memory addresses and push things too and read from the consul port(177564). The CPU user’s guide will explain all the stuff involved with working in ODT
This is one of my favorite programs that can be loaded in from the keyboard or con via ODT that has worked on both my Qbus systems and my Unibus system

1000/005000
1002/12701
1004/177564
1006/105711
1010/100376
1012/110061
1014/2
1016/005200
1020/000137
1022/001006

1000G

This clears Register 0, moves the contents of whatever you type into the con (177564) to Register 1 then displays the contents of that register and increments it by one and loops back to line 6 (1006) and will keep doing this until you throw the “HALT’ switch. You will get an incrementing line of numbers and letters on the con until you halt the system.
I don’t have the Users Guild for your CPU but I do have the manuals for the 11/23(M8186) if you need one. All the secrets of ODT are explained there.
 
I've actually got the cpu manual. I haven't got around to actually reading it yet other than to double check the jumpers.

Can anyone tell me what this "putr.exe" thing is and where to find it ? How do you mount and address 5.25" disks on a pc running SimH ?

XXDP25 Notes -- 8/11/2000, 3/21/2001

Creating bootable XXDP disk

1. Format floppy in RX50 format using putr.exe (DOS).
2. Boot xxdp.
3. Run UPDAT.
4. INITIALIZE disk to write directory.
5. CREATE bootable image.
6. Exit UPDAT.
7. Copy diagnositics program files to the new disk.
 
Back
Top