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- Path: sparky!uunet!dtix!relay!relay2!afterlife!jepstei
- From: jepstei@afterlife.ncsc.mil (John Epstein)
- Newsgroups: comp.os.linux
- Subject: Multiple disks: IDE and RLL DTC7287 controller
- Message-ID: <1992Nov21.224725.1594@afterlife.ncsc.mil>
- Date: 21 Nov 92 22:47:25 GMT
- Organization: The Great Beyond
- Lines: 27
-
- After reading Sotiris Karagiannis question on using IDE and AT controller
- I finally bite the bullet.
-
- I tried shareware 3_drives.hdd from simtel-20 dskutl --- but it didn't install.
- Never gets past initialization prompt.
-
- I did cut the land to IRQ14 (pin D7 on the extended 36 connector) on
- DTC7287 conroller RLL --- because IRQ14 was still active with RLL controller
- as secondary HD at 170!!!
- BTW: DTC7287 can also jumper floppy to sec. and still use IDE as floppy
- controller also.
-
- LIGHT BULBS go off!!! Since IRQ14 was still active when sec address ---
- moving IRQ from 14 to spare IRQ and copy hd.c stuff from kernel to hd_sec.c
- with address from primary address to sec address 170... and another IRQ gate.
-
- I plan to have second disk available for Linux (too bad not also avail for
- MS-DOS)
-
- I will clip lead IRQ to vidoe card (only card in my system that has connection
- to unused IRQ's. Alternative is to put in blank card and clip lead from
- DTC7287 to blank card. [DTC7287 only has copper for IRQ14]
-
- BTW: yes I have MD_DOS 5.0 as required by 3_drives.hdd.
- Tried in config.sys without much else and with it first.
-
- John
-