semi-homemade micro

woodelf bfranchuk at jetnet.ab.ca
Sun Nov 13 17:18:41 CST 2005


Allison wrote:

>Uhm, what about 12bit[OS8 srt-8]?   There are few othter word lenths
>than those that are not unobtainium.
>
>  
>
Well what about them?

>>You can only get the 16 machines easly and resonable source of a OS.  
>>    
>>
>
>Explain that from your perspective.
>
>  
>
My perspective is things that I have seen in my past other than DEC or 
IBM or other BIG IRON.
That  was mostly 8080's , Z80's and other items advertised in BYTE. CP/M 
was the only one
that I know of  that you could get source for to adapt to your 
computer.  Once the PC arrived
open source vanished.  Sure  linux  is open source but who can read  or 
adpt the several meg
of source to a small machine.  Minux was a nice try but it lacked a C 
Compiler. Small C went
a DEAD end route as you could only use it if you bought the out of print 
books.

>>The 68000 yes still works best with 64k addressing.
>>Oddly the only micocomputer chip I like ( other than the 6800/6809) is  
>>National Semiconductor's 16032 is another chip that you could never get.
>>    
>>
>
>T-11 regular instruction set of the PDP-11.  Not too hard to find.
>Z8001 and Z8002s I have a few of.  Z280, theres an interesting varient 
>of Z80 with 24bit MMU that looks like the DEC PDP11 MMU (even I&D!).
>
>  
>
Yes I know I keep forgeting the 11 but I got forced into using PC's so 
only now do I
have the time and a tiny amount a money for classic computers.

>So you have to be a bit more descriptive.
>
>Allison
>  
>




More information about the cctalk mailing list