Gordon JC Pearce
gordonjcp at gjcp.net
Thu Nov 17 14:15:33 CST 2005
>>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.
More information about the cctalk