PDP-8: (and others) anyone tried NVRAM simulation of hard drives?

From: ben franchuk <bfranchuk_at_jetnet.ab.ca>
Date: Wed Feb 5 19:22:40 2003

Kevin Handy wrote:

>> I think the idea of a processer having about 2000?? transistors
>> and a 8K core stack, with a i/o card having a cpu with say 68000
>
>
> But, remember, that 8k is 12 bits wide!

And here I thought it was 7777 wide. :)

What I had forgotton is disk data is 12 bits. None the
less a 8 bit micro could process 6 bits at a time :)
Mass storage for REAL* PDP-8's are interesting because
you had paper tape,dec tape and disk storage systems
all needing to be compatable and to have virtual memory
the OS.

*Ones with a front panel.

Ben.
(Mind you if anybody does get a 12 bit hard drive
I would be interested because I am building a 24
bit computer.)
Received on Wed Feb 05 2003 - 19:22:40 GMT