PDP 8/E OS8 Boot Floppy and Diagnostics images?
useddec at gmail.com
Wed Sep 24 22:30:26 CDT 2008
You might want to try putting something else in the same slots and see if it
works. It could be a backplane problem. Cleaning it out might help.
Do you have a second backplane in your 8? Can you try other slots? The over
the top connectors can also cause problems. Is the drive cable plugged in?
Have you tried one board at a time? I have an extender I can loan you, but
it will only work on one board at a time without the connectors.
On Fri, Sep 19, 2008 at 6:01 PM, Rick Bensene <rickb at bensene.com> wrote:
> I have a PDP8/e, with RX8E and a dual drive RX01 floppy subsystem.
> I have a bunch of unformatted 8" Single Density, Single-Sided,
> Soft-Sector floppies that will work with these drives. I also have a
> working PC04 paper tape reader/punch, and a console connection at 4800
> baud (to a PC running either Windows or Linux). All of the hardware
> listed above has been tested using DEC diagnostics (loaded from paper
> tape), and all tests pass.
> What I'm looking for is a boot floppy(RX01) for OS8 V3D or better that
> will support this hardware configuration. The issue is this: If I can
> lay hands on a bootable floppy image, how can I make a real floppy from
> the image?
> Is there some kind of standalone tool that will take an image file from
> a PC, and send it over a serial port, and write the image out to a
> floppy via the RX8E? I'm looking for something kind of like VTSERVER
> for the PDP11, but written for the PDP8/e, and small enough to either
> toggle in from front panel (perhaps a few hundred words, I'm pretty
> patient), or be able to be punched to tape and loaded with the BIN
> Also, is there anyone that has BIN-loader loadable paper tape images for
> the various diagnostics for the RK8E disk controller/RK05 disk drives?
> The system has an RK8E in it (along with the diode boot board for the
> RK8E/RK05), but there seems to be a problem, as when I try to boot from
> a known good RK05 pack with OS/8 on it, the machine hangs. I have a
> bunch of the DEC diagnostics on paper tape, and have run all of the ones
> that I have, but there's none for the RK8E/RK05. All of the other
> diagnostics (memory checkerboard, CPU tests, etc.) run with no errors.
> The system has 24K of memory, with 8K (2x4K boards) of core, and 16K of
> solid state memory.
> Also, I'd need documentation for said test programs in order to know how
> to run them.
> Thanks in advance for any help that the collective may have.
> Rick Bensene
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