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  1. Replies
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    I do happen to have a dd11-C backplane in my atex...

    I do happen to have a dd11-C backplane in my atex system, could it be used with the 11/10?
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    Hello, the idea about taking the front panel...

    Hello,
    the idea about taking the front panel and putting it into a frame would be very nice for me, since I am currently selling my Atex 11/34 and finding a sufficient backplane and cards would be...
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    PDP-11/10 front panel question

    Hello, I have recently acquired a PDP-11/10 front panel, it is in pristine condition, with everything being clean and without scratches or dents. I was wondering how much one could sell it for, given...
  4. Oh nevermind, I realized that the bios battery...

    Oh nevermind, I realized that the bios battery was leaky, almost leaked over the board, but I managed to catch it right before. I took the wires and soldered a cr2032 to it and it seems to hold the...
  5. Wyse Decision 386/25 "No Boot Sector On Hard Disk"

    Hello, I have a Wyse 386/25 computer. It has an adaptec SCSI card that connects to a seagate ST2383N hard disk. The problem is that it cannot find the boot sector somehow?

    I have a SCSI card that...
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    Atex PDP-11 with J-11 CPU

    Hello, I'm selling my PDP-11 system. The power supply has been reformed and all the voltages have been tested to be good under load. If you have any questions, PM me.
    ...
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    Hey everyone, I soaked the head in alcohol for 48...

    Hey everyone, I soaked the head in alcohol for 48 hours just to be sure, and sure enough, it turned out to be a stuck head. Thanks for the help guys!
  8. Hello, when I try and change the I/O base address...

    Hello, when I try and change the I/O base address in the ms-dos program itself, it says that the card does not exist. I found that it is indeed conflicting with the graphics card, is there a way to...
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    Hello, I've cleaned the head, and the problem is...

    Hello, I've cleaned the head, and the problem is still there, I've also tested the continuity from the power board to the print head and everything is ok. So I suspect this has something to do with...
  10. Never mind, there was a text file in the folder...

    Never mind, there was a text file in the folder of the programs, entering the right address into it, made it work.

    Thanks everyone!
  11. I wasn't able to find anything on the motherboard...

    I wasn't able to find anything on the motherboard I/O base address jumpers and windows 98SE did not see the card in the device manager. Are there certain drivers that I'm missing for the card? The...
  12. Thank you for the software, I copied it to my...

    Thank you for the software, I copied it to my Pentium machine and upon starting up, it returns a error identification on hardware error. Does this mean that the card itself is dead?
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    Wanted: DEC BA11-D Mounting box

    Hello, I am looking for a DEC BA11-D Mounting box. This is for a PDP-11/10 computer that I am wanting to build, I currently have the 11/10 front panel and the power supplies to the machine.
  14. Replies
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    Help with a Decwriter III LS-120

    Hello, I recently bought a Decwriter III LS-120, and after cleaning it up and making sure the voltages were correct and stable, I tried printing on it, it worked, but there was one line that was not...
  15. Pentium-S with Sunshine EW-901 Eprom Programmer

    Hello, I have recently gotten a Sunshine EW-901 programmer. I was not able to find too much about it, but found a website with ms-dos applications for it. I have a Pentium-s 166mhz system that is...
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    Wanted: PDP-11/10 Cards & Backplane

    Hello everyone, I recently received a PDP-11/10 front programmers panel, and was wondering if anyone would be willing to sell the computer cards and the backplane from an 11/10, I can put these in my...
  17. Replies
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    I do not have an oscilloscope, but I was planning...

    I do not have an oscilloscope, but I was planning on getting one, so i'll order one sometime today, and when it arrives, I will measure the H Sync, and V Sync. I will probably measure all the address...
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    Hello, there were some times where I could...

    Hello, there were some times where I could clearly see a pattern of dots or lines, something of a checkerboard pattern on the TV. I will try looking for a multisync monitor, but due to COVID, I don't...
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    Embedded Z80 System Help

    Hello everyone, in my previous post, I had found an ATEX PDP-11, this was no normal PDP-11, it was very program specific and not a general purpose computer.

    I have noticed that on the CPU...
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    When I reset the PDP, there are usually some...

    When I reset the PDP, there are usually some patterns or lines for a second before it goes to a blank screen again. Is there anything I can test that can bring me closer to why the PDP is not...
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    Thank you, I had found the datasheet from the...

    Thank you,
    I had found the datasheet from the 9937 and found that some of the I/O lines go to the 8002, so I decided to connect it to my TV again and everytime I had reset the PDP, I got an...
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    Hello Cruff, Sadly I was not able to to find...

    Hello Cruff,

    Sadly I was not able to to find a datasheet or pinout from the 9937, but I did find a datasheet from the 9927, are they the same in terms of having the same pinout? The 8002 video...
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    Sorry to revive an old thread, but while poking...

    Sorry to revive an old thread, but while poking around on my PDP-11, I noticed something very interesting on the main CPU board. Next to the TMS9937NL video controller, there was another chip that is...
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    Hello, I have a small USB logic analyzer like...

    Hello,

    I have a small USB logic analyzer like the one in this website https://www.sparkfun.com/products/15033

    I am running Sigrok Pulseview on it to collect data
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    Thank you so much for the help everyone! I really...

    Thank you so much for the help everyone! I really appreciate it!

    At the moment, I currently have a logic analyzer (The small 8 channel USB ones). Is there any way to test clocks with a logic...
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