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Configure to boot from floppy: Tarbell DD FDC + Qumetrak 842

nullvalue

Experienced Member
Joined
Oct 8, 2019
Messages
464
Location
Indiana
In a recent post, I mentioned a new system I acquired and wanted to get into the system monitor. That I was successful with that and in testing the RAM on board. Now I'd like to get the system booting from the Floppy Disk. I have just one disk which I believe has MP/M on it. The system was configured with 4 floppy disk drives (2 QumeTrak 842 and 2 Siemens 120-8). For simplicity's sake right now, I'd just like to use a single drive. I'm read through both the Tarbell controller manual and that Qume's manual. As far as I can tell, I have the drive configured as a single drive, Drive 1.

This table from the Tarbell manual shows how to jumper the drives:
2021-03-29 19_57_31-Tarbell Double Density Disk Con - Tarbell DD FDC Manual.pdf — Mozilla Firefo.jpg

I've confirmed that I have jumpered A, B, C, Y, DS, and DS1. I could not find anything in the drive manual or on the PCB about 800, or T1-T6. Anyone know about these settings?

So I have reconfigured my 2810 CPU board to its original configuration (not to boot to ROM). However at powerup I get no disk activity. No lights, disk does not spin. If I manually move the head prior to powering on, the head does seek to Track 0 - but does nothing else. I can't tell if I have misconfigured something to do with the floppy cards/cabling (I don't think so), or if the FDD isn't getting the request to boot (probably more likely)? How do I configure the system to boot from the floppy drive? In a Vector Graphic system I had, there was a "B"oot option in the monitor that would initiate the process, but there doesn't appear to be a Boot command in the 2810's monitor.

If more pictures would be helpful for troubleshooting, just let me know what you need.
 

nullvalue

Experienced Member
Joined
Oct 8, 2019
Messages
464
Location
Indiana
I should also mention that on the Tarbell FDC, I have confirmed that bootstrap is enabled. So shouldn't I see activity at the drive on powerup?
 
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