On Fri, 17 Apr 2020 13:44:23 +0800 Turritopsis Dohrnii Teo En Ming <[email protected]> wrote:
> On 2020-04-16 23:04, deloptes wrote: > > Turritopsis Dohrnii Teo En Ming wrote: > > > >> Isn't it better to install Debian in a virtual machine rather than > >> using > >> debootstrap? > > > > these are apples and oranges and BTW there is no virtual machine > > for RPI > > except qemu > > > > The question was how to install debian on RPI and this is what I > > did. From > > RPI debootstrapped debian armhf and copied the boot directory and > > the kernel from the raspbian installation. > > > > I wanted to test arm64 next but did not find the time yet. > > > > regards > > What is the difference between armhf and arm64? > > > https://stackoverflow.com/questions/37790029/what-is-difference-between-arm64-and-armhf The original 1988 ARM and many generations since did not have floating point hardware. It's only when multiple cores became popular that it became worth doing. Floating point hardware was always a separate core, (the 80486 was an 80386 plus an 80387 in the same package) using microprogramming to provide the functions. The RISC ARM doesn't do the CISC/microprogram thing, so a single processor would spend the same amount of time carrying out the calculations whether they were a formal FP instruction set or not, and the whole point of the ARM is that it is smaller and simpler than a CISC processor. -- Joe
