Midwest Scientific Instruments 6800

Chris Elmquist chrise at pobox.com
Mon Aug 1 22:14:14 CDT 2016

I have all kinds of SWTPC 6800 stuff here and I think I recognize your floppy controller as a PERCOM LFD-400 board.  These are somewhat unique because they are built around a sync USART (S2650) and use 10-hole hard-sector floppy media (just like Heath H17 and Northstar systems).

Can you see any PERCOM logo on the floppy controller board?

Are there two 2708 EPROM on that board?


On August 1, 2016 12:32:49 PM CDT, Brad H <vintagecomputer at bettercomputing.net> wrote:
>Just thought I'd send out another shout out to anyone who might have
>one of these or is familiar with them.  I've had this a while but have
>not really been able to use it, lacking a boot disk.  It also doesn't
>have the standard MSIBUG ROM.  I'm hoping maybe someone out there knows
>how I could procure the original ROMs and put this back to stock.
>I made a video showing the current 'WEEBUG' ROM in case any are curious
>or someone out there knows about it.
>Sent from my Samsung device

Chris Elmquist

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