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- Newsgroups: comp.os.linux
- Path: sparky!uunet!mcsun!fuug!prime!mits!ajake
- From: ajake@mits.mdata.fi (Jarkko Aitti)
- Subject: MFM and IDE drives coexist under Linux? (question)
- Organization: Microdata Oy, Helsinki, Finland
- Date: Tue, 15 Dec 1992 18:34:16 GMT
- Message-ID: <1992Dec15.183416.19590@prime.mdata.fi>
- References: <1992Dec12.232543.1@cc.curtin.edu.au> <Bz74Lz.wL5@citrus.SAC.CA.US>
- Sender: usenet@prime.mdata.fi (Usenet poster)
- Nntp-Posting-Host: mits.mdata.fi
- Lines: 58
-
- In article <Bz74Lz.wL5@citrus.SAC.CA.US> ianj@citrus.SAC.CA.US ( Ian Justman ) writes:
-
- >Also, the most readily-available patch is the XT patch. Unfortunately for
- >me, the patch was written for a DTC controller, and I have a Western Digital,
-
- Hmm, XT patch? I have two st412 compatible controllers (both 16bit) :
-
- 1) MFM 1:1 interleave HFDC-6V which has no switches nor bios + floppy
- controller. (one seagate st-251 attached)
-
- 2) RLL 1:1 interleave DTC 7187, which is jumpered to secondary IO adresses.
- (one seagate st-251 attached)
-
- I'd like to get these babies working with linux (dos not needed:), how can i
- accomplish this?
-
- Both drives are now jumpered to driveselect 0.
-
- I have also third drive which is smaller and like use it also and put it in
- first controller which is MFM and use those 'bigger' ones (st251 is such a
- beast:-) with secondary controller (RLL), is this possible?
-
- Notice that only the RLL (DTC7187) can be switched to other IO address and has
- a bios in it and it has no floppy part..
-
- I tried with those 2 drives both in secondary RLL controller and bios or
- something complained at bootup something about of primary drive not existing.
-
- Linux doesn't see second drive at current configuration, dos fdisk sees it but
- when i tried to partition it, it only got wicked (funny sounds).
-
- So, i think that first job is to fix hardware, i seen general postings about
- this and i wonder if i need to change interrupt from secondary controller
- or just 'multiplex' them with diodes?
-
- If separate interrupts are needed what should i do? should i cut int14 from
- second controller and connect it to int15? anything else?
-
- Or should i leave both on interrupt 14 and put diodes in them? how so i do
- that? by cutting int14 line and putting diode between (anode towards card and
- kathode towards bus?) ?? and 10k pulldown resistor to other? (from kathode to
- ground?)
-
- Next i would like to know what i should do with linux kernel to get those
- supported? (anybody done it?)
-
-
- More notices: to get those working this far i was forced to use secondary
- controllers own bios configuration with secondary drive, so only first drive
- is in machines own bios setup. ( i think that this must be done also if i ever
- want more than two drives working )
-
- Please help, i'd really like to get linux running again.
- (with more diskspace&speed :-) (RLL is faster ya know:)
- --
-
- Name: Jarkko J. Aitti Mail: ajake@mits.mdata.fi
-
-