T-11 (was Re: PDP-11/70 cache memory)

[Gordon JC Pearce MM3YEQ]

Allison wrote:
>> Subject: T-11 (was Re: PDP-11/70 cache memory)
>>   From: "Bob Armstrong" <bob at jfcl.com>
>>   Date: Thu, 01 Jan 2009 08:00:03 -0800
>>     To: <cctalk at classiccmp.org>
>>
>>> bfranchuk at jetnet.ab.ca wrote:
>>> PS.  Now only if   BOB could make a PDP 11 kit . :(
>>  I think it'd be fun too, and if somebody else made one I'd buy one, but as
>> a product -
>>
>>  - there's no legal software you can run on the T11 (and no, RT11 isn't
>> legal!)
> 
> Forth, CP/M68 could be compiled for it. I'm sure TinyBasic can be done 

I always fancied writing a PDP-11 Forth ;-)

>>  - there's no lights and switches front panel option for the T11
> 
> It a micro much like 8085 so yes it can be done.  But a small SBC with 32kw ram,
> 2kw rom and some serial IO is a tiny thing.

Hang LEDs off a latch, if you want them...


>>  - there's no source for T11 chips except to steal them from old hardware
>> like RQDX3s, etc
>>
> 
> That's a bit harder but far from impossible.  considering DEC used them in
> Falcon boards, and the the qbus slave (kxt21?), Vt240/241 series, and the 
> storage hub (something mumble50).

Dare I say, clone in an FPGA?

Gordon