Minix

[Gordon JC Pearce]

Allison wrote:
>>Subject: Re: Minix
>>  From: Gordon JC Pearce <gordonjcp at gjcp.net>
>>  Date: Thu, 17 Nov 2005 18:41:22 +0000
>>    To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
>>
>>Actually, I meant the RL02 terminator.  I have been entering bootstrap 
> 
> 
> Only needed for RL02. Not the RX02 as mentioned.

Bah, I'm a moron.  Of course I meant the RLV12.

>>code by hand since one of my bootstrap ROMs went pins-up a couple of 
>>weeks ago - you may remember I posted asking about favoured boot ROM 
>>images?  Not to mention entering quite a lot of code into ODT by hand 
>>when I first got my 11/73 and *nothing* would play nicely...
>>
>>Originally the Baydel multipurpose card could boot pretty much any 
>>common QBus mass storage.
> 
> 
> Like the bdv11 (m8012).

Would the ROMs work?  Are there dumps of them?

>>>The RQDX will need the distribution board to breakout the floppy and HD
>>>connection from the 50pin cable.  If you find prints it's something 
>>>that can be wire wrapped (it's only connectors).  The boot for MSCP
>>>disks is also possible to hand enter.
>>
>>Got the breakout board, in the BA23.  Haven't played with it yet though.
> 
> 
> Floppy disk can be RX50 or TEACFD55GFR.  If the controller is RQDXXX1 or 2
> the disk will be RX50 or only one side of Teac (RX33).  If RQDX2 depending
> on ROM rev it will be RX50 and or RX33 (800k).  You can bet on
> RX50 compatability in all cases which is single sided 80track 10 SPT.
> To use the teac you may require nonstandard jumpers [compared to RX33] on 
> the drive to make it look and act like RX50 to older RQDXn though it 
> does work fine.

Got an RX50, not got any (known-good) RX50 media.  I seem to recall that 
normal 5.25" DD floppies are a no-no, but I can't remember why.

> The hard disk is st412(10mb), ST225(20mb), st250(40mb), Quantum D540 (30mb).
> However they must be formatted with either xxdp or deom a system that can
> such as uVAX2000 (for RQDX3 only). 

Yes, I've been reading up on this.  Apparently you can modify XXDP to 
handle different formats, too.  I *think* I might have an ST225.

Gordon.