rub@aero.org (Jerzy W. Rub) (06/13/91)
This subject has been brought up here before but not with the components I have. Basically, I have a 386 with a Seagate ST1239A IDE disk and an adapter (bus) card which controls two floppies and connects two hard disks. I also have (both currently unattached) an RLL controller (DTC (Qume) 7287) and a NEC 68MB disk. (The RLL controller is also capable of supporting 2HD and 2FD.) I am looking for a definite statement regarding coexistence of these two "controllers" and disks. If they can't coexist, please provide me with specific technical reasons (please point to books, magazines, whatever). If they can coexist, I would very much appreciate knowing what I need to do to make them. I have (skimpy) manuals for both controllers. The AT Bus card has four jumpers: J1 is always ON, J2 selects primary/secondary address (37X,3FX), J3 toggles setting I/O channel ready, and J4 is a connector for the disk drive LED. That's it. The DTC controller has a few more jumpers: W2 and W3 are described together (which is confusing to me since there should be 4 distinct states possible but the manual describes only two: if W2 and W3 are not installed the primary port addresses are 1F0-1F7 and 3F0-3F7; if W2 and W3 ARE installed the secondary address is used (170-177 and 370-377. This seems to be contradicting the AT BUS card set up. Does anyone know which should be primary?)), W4 controls floppy data transfer rate, W5 toggles hardware/firmware select mode, W6 controls the LED, W7 selects precompensation for the floppy, W8 must be installed, W9 specifies BIOS PROM address of either C800:0000 or D800:0000, and W10 enables on-board BIOS PROM. Thanks for any help you can offer and please email directly to rub@aerospace.aero.org. - Jerzy
rub@aero.org (Jerzy W. Rub) (06/13/91)
Newsgroups: comp.sys.ibm.pc.hardware Subject: controller coexistence Distribution: comp.periphs --text follows this line-- This subject has been brought up here before but not with the components I have. Basically, I have a 386 with a Seagate ST1239A IDE disk and an adapter (bus) card which controls two floppies and connects two hard disks. I also have (both currently unattached) an RLL controller (DTC (Qume) 7287) and a NEC 68MB disk. (The RLL controller is also capable of supporting 2HD and 2FD.) I am looking for a definite statement regarding coexistence of these two "controllers" and disks. If they can't coexist, please provide me with specific technical reasons (please point to books, magazines, whatever). If they can coexist, I would very much appreciate knowing what I need to do to make them. I have (skimpy) manuals for both controllers. The AT Bus card has four jumpers: J1 is always ON, J2 selects primary/secondary address (37X,3FX), J3 toggles setting I/O channel ready, and J4 is a connector for the disk drive LED. That's it. The DTC controller has a few more jumpers: W2 and W3 are described together (which is confusing to me since there should be 4 distinct states possible but the manual describes only two: if W2 and W3 are not installed the primary port addresses are 1F0-1F7 and 3F0-3F7; if W2 and W3 ARE installed the secondary address is used (170-177 and 370-377. This seems to be contradicting the AT BUS card set up. Does anyone know which should be primary?)), W4 controls floppy data transfer rate, W5 toggles hardware/firmware select mode, W6 controls the LED, W7 selects precompensation for the floppy, W8 must be installed, W9 specifies BIOS PROM address of either C800:0000 or D800:0000, and W10 enables on-board BIOS PROM. Thanks for any help you can offer and please email directly to rub@aerospace.aero.org. - Jerzy