On 4 Aug 2001, Iggy Drougge wrote:
> > Here is a little puzzle to test your readers' 8080 machine ingenuity:
> > "Imagine you possess an 8080 with 64K bytes of read/write memory
> > which you want to clear. Write a program that sets all 65536 bytes
> > to zero."
> Seemed like a piece of cake until it dawned upon me that the program has got
> to be stored somewhere. =/
PUSH is a good way to do it, BUT, ...
To clear ALL memory, the PUSH instruction must be at location 0 (at least
by the end of the program). Otherwise, the program code will be zero'd
out before it is done.
Can you do it WITHOUT self-modifying code?
> Apart from the extremely short-lived Commodore 900, were there any other Z8000
> based systems?
I think that Olivetti did one.
Did anyone ever build a 65000 based system?
--
Grumpy Ol' Fred cisin_at_xenosoft.com
Received on Fri Aug 03 2001 - 20:19:21 BST