11/04 latest - oops, 11/94
rodsmallwood52 at btinternet.com
Sun Jun 5 11:36:06 CDT 2016
On 05/06/2016 12:31, Henk Gooijen wrote:
> -----Oorspronkelijk bericht----- From: Mattis Lind Sent: Sunday, June
> 05, 2016 10:44 AM To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: 11/04 latest
> 2016-06-05 9:58 GMT+02:00 Rod Smallwood <rodsmallwood52 at btinternet.com>:
>> Well lots fun with the 11/94 project. In fact its become an 11/84
>> 11/94 project.
>> After following Sherlock Holmes advice "when you have eliminated
>> everything else.Whats left however unlikely is the answer" I
>> the RX211 needed to be in CDEF and not ABCD. Why did I not know that?
>> Well I can only put it down to the fact all of the UNIBUS options I ever
>> worked with were hex modules.
>> Next fascinating fact. You can switch between being an 11/84 and an
>> 11/94. Although one box has three Qbus slots and the other (11/84) has
>> four. If you put an 11/84 CPU in slot 1 and a MSV11-J (PMI) in 2 or
>> 3 it
>> does its startup tests and goes into the monitor screen.
>> If you try to boot the RX02 in 11/84 mode you get
>> (the drive does get accessed - there's a nice healthy clonk)
>> Trying DY0
>> Error 101
>> Unexpected trap to location 114
>> See troubleshooting documentation
>> Updated PC 173260 PCR Page = 62 Program listing address =
>> R0 = 000000 R1 = 177170 R2 = 042131 R3 = 000000
>> R4 = 024000 R5 = 000000 R6 = 172276 R7 = 001600
>> In 11/94 mode it stops at the same point but does not give the error
>> Comments gentlemen please
> Is this RX211 + RX02 a known working set? It could be useful to wire up a
> DL11 (of some sort) at 176500 and connect it to a TU58 emulator to run
> kind of XXDP diagnostics for RX02 / RX211.
> Maybe also run other XXDP CPU diagnostics even though the boot ROM
> include quite some diagnostics for the CPU and memory.
> Hmmm, if the RX211 has been in position A-B-C-D instead of C-D-E-F, I
> check what the effect is on the module. Would it still be correctly
> - Henk
I have two RX211 and the other one never went in the wrong slot
and the result is the same.
Mattis idea of loading xxdp from the TU85 looks possible.
I also have an RX01. I'll see if I have an interface for it.
There's also a Qbus interface for RX 's
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