On 30/11/17 05:07 PM, David T-G wrote:
James --
...and then James Knott said... % % On 30/11/17 07:30 AM, jdd@dodin.org wrote: % > % > I used to use "paging" for ram % % Anyone here remember overlays? Many years ago, I used to work on Data % General Nova computers. They had 8 or 16 KB of memory and head per [snip]
Yes, although I was never smart enough to be able to actually play with the code. It was just this magic thing the software did to allow one to access "large" amounts of memory with those tiny 8-bit chips :-)
The Nova was 16 bit, so 8 KB was 4 K words. IIRC, the disks were 128, 256 or 512K, depending on the model. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org