PDP-11/23 Debugging

Glen Slick glen.slick at gmail.com
Mon Nov 17 10:56:38 CST 2014

On Mon, Nov 17, 2014 at 8:14 AM, Ben Sinclair <bensinc at gmail.com> wrote:
> Since I do have a BDV11, am I correct in that I should just leave the aux
> switch alone and continue debugging elsewhere?

Do you have jumper W4 installed or removed on your M8186? If you are
using a BDV11 with the M8186 system then I believe you would normally
have jumper W4 installed on the M8186.

Then on the BDV11 you would set the E21 Switch 5 to the On/Closed
position so that the LTC function is software controlled by Bit 6 of
the resister at 177546.

Page 2-2, 2.2.2 Event Line - W4

Page 3-3,Table 3-1, BEVNT L Switch
Page 4-22, Figure 4-11, BEVNT Logic


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