Sujet : Re: RP2350 and Pico 2 - things missing
De : tnp (at) *nospam* invalid.invalid (The Natural Philosopher)
Groupes : comp.sys.raspberry-piDate : 22. Aug 2024, 09:17:19
Autres entêtes
Organisation : A little, after lunch
Message-ID : <va6s6f$c7dr$1@dont-email.me>
References : 1 2 3
User-Agent : Mozilla Thunderbird
On 21/08/2024 23:43, Brian Gregory wrote:
On 17/08/2024 08:22, Lawrence D'Oliveiro wrote:
Or, you could bring back the old PDP-8 trick, of having the jump address
be in the *current page*. That means the upper bits are taken from the
current program counter.
That must be damn annoying to program in assembler.
Probably slows compilers down a fair but too.
IIRC 8086 was the same for conditional jumps.
In fact the whole small model thing was coding for a 64k page.
There were a few instructions that worked across pages...but my memory is dim.
-- "When a true genius appears in the world, you may know him by this sign, that the dunces are all in confederacy against him."Jonathan Swift.