From: Rick Murphy <rick at rickmurphy.net> To: cctalk at classiccmp.org Subject: Re: Using two RL02 drives on OS/8? (cont'd) Message-ID: <201401280235.s0S2Z0Es004934 at rickmurphy.net> Content-Type: text/plain; charset="us-ascii"; format=flowed At 04:13 PM 1/27/2014, Charles wrote: Those programs access the drive hardware directly and don't use OS/8 for anything. You can't change DSK to a device that doesn't have an active handler. And, your unit convention is wrong - OS/8's device name mapping scheme is a pain, so you have to be careful how you reference things. What you should have in BUILD for this configuration is the following drivers: R0AB which gives devices R20A and R20B R0CD which gives devices R20C and R20D R01E which gives devices R20E and R21E R1AB which gives devices R21A and R21B R1CD which gives devices R21C and R21D If you don't have those, you'll have to LOAD them into build. So, you need to insert the drivers for drive one: $ RUN SYS BUILD $ IN R1AB:R21A $ IN R1AB:R21B $ IN R1CD:R21C $ IN R1CD:R21D $ IN R01E:R21E If you have enough driver slots, of course. Now device R21A: will go to the right place. The unit number is hard coded into the drivers so you need to use a driver binary built for the right unit number. -Rick