Connecting a BC80M cable to a RLV12 controller

I forgot to note that I am rather lucky, and all of my RL02 cables have a green "THIS SIDE UP" sticker on the connector. -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Julian Wolfe Sent: Thursday, November 10, 2005 4:11 PM To: 'General Discussion: On-Topic and Off-Topic Posts' Subject: RE: Connecting a BC80M cable to a RLV12 controller Hmm, firmware based 11s seem to vary as far as how they respond on bootup. My 11/23plus gives me "MEMORY TEST"(15 second pause)384KW. START? Then I type DL at the prompt and it boots from the RL02. On an 11/73, I assume you'd still have native RL0x support, so, perhaps you'd still have the "START?" prompt? If you want to boot it manually, i.e. if it doesn't have native RL support, you can enter an RL02 bootstrap when the console is in ODT mode. This is what I have to do for certain magtapes or all MSCP devices, because the 23+ doesn't have MSCP support built in to the firmware. Now secondly, I know you can configure a CPU to autoboot a certain device. That, I'm sure they carried over from the 23+ on to later machines. You need the 11/73 processor manual and the RLV12 manual. Get those and you should be able to figure it out. -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of David Betz Sent: Thursday, November 10, 2005 3:50 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Connecting a BC80M cable to a RLV12 controller I finally got a drive select plug for my RL01 drive and would like to try connecting it to my 11/73 but I find that the cable that is supposed to plug into the RLV12 controller isn't keyed so it can go in either way. How do I tell what the correct orientation is for this cable? I'm assuming that if I plug it in backwards I'll fry the controller and/or drive. The only markings on the end of the cable that connects to the controller are the manufacturers name "Berg" and the letters A and B near one end and VV and UU near the other end. How should this cable be inserted into the RLV12? Also, assuming I get this straightened out, what should expect to happen on power up? Should the 11/73 automatically boot from the RL01? I have an MXV11A boot board installed. Or do I get a console prompt and have to select the boot device on the console? Thanks, David