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  • PDP-11 Level 0 Bootstrap for Sykes Twin Floppy Disk Drive

    From pdr0663@paul@rileyriot.com to alt.sys.pdp11 on Thu Jun 3 23:10:21 2021
    From Newsgroup: alt.sys.pdp11

    Hi there, I have a twin 8" Sykes floppy drive unit, without any documentation.

    I'm after a bootstrap program to read sector zero on the disk and execute it so I can boot from a floppy.

    Anyone have any experience?

    Paul
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  • From Bill Gunshannon@bill.gunshannon@gmail.com to alt.sys.pdp11 on Fri Jun 4 08:05:52 2021
    From Newsgroup: alt.sys.pdp11

    On 6/4/21 2:10 AM, pdr0663 wrote:
    Hi there, I have a twin 8" Sykes floppy drive unit, without any documentation.

    I'm after a bootstrap program to read sector zero on the disk and execute it so I can boot from a floppy.

    Anyone have any experience?

    Paul


    Does it emulate the RX01/RX02?

    RX01 bootstrap is available in the RT-11 Pocket Guide.

    bill

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  • From pdr0663@paul@rileyriot.com to alt.sys.pdp11 on Tue Jun 8 17:21:05 2021
    From Newsgroup: alt.sys.pdp11

    On Friday, 4 June 2021 at 10:05:54 pm UTC+10, Bill Gunshannon wrote:
    On 6/4/21 2:10 AM, pdr0663 wrote:
    Hi there, I have a twin 8" Sykes floppy drive unit, without any documentation.

    I'm after a bootstrap program to read sector zero on the disk and execute it so I can boot from a floppy.

    Anyone have any experience?

    Paul

    Does it emulate the RX01/RX02?

    RX01 bootstrap is available in the RT-11 Pocket Guide.

    bill
    Bill,
    Thanks for your reply. I have tried the RX01/RX02 bootstrap without any luck. It has it's own controller card, so may not emulate RX01/RX02. There is a version of Unix for the PDP-11/03 called LSX, and there are separate drivers for the Sykes drive, so I suspect that it's different.
    Paul
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