On 1/8/2018 3:03 PM, shadoooo via cctalk wrote: Does the 723 work differently than the 726? I'd saved the below 726 info from somewhere. Info re Dilog SU726A There is, indeed, a serial port. I have found documentation for other DiLog boards and on them the serial port is relatively standard (unlike the Viking, on which the serial signals are embedded on the SCSI connector I think). The documentation also suggests there may be two methods to get at setup from the system console. The first method (loading 77777 into <SA> and then jumping to 2000) hasn't worked so far. I am about to try booting from 175000 to see if that works. Otherwise, I will have to look for the appropriate serial cable. The documentation I have for a different DiLog board gives a Digital part number BC20N-05 for the serial cable, and also gives the pin-outs. Here are the details: Method 1: You need to know what address the board is set for. The board has two consecutive addresses in the I/O page. In console ODT, open up the first address and deposit 0. Open up the second address and deposit 77777. Start executing at location 2000, thus: @17760344/xxxxxx 0<LF> @17760346/xxxxxx 77777<CR> @2000g Method 2: Install jumpers at JP13 and JP14. Boot from address 175000, thus: @175000g In either case you get an "*" prompt. Type FT to start the setup program. (You can also specify a device to boot from by entering a device name and unit number here.) Hope this helps the next guy. - Rob Rob Brown brown at gmcl.com http://gmcl.com/