Which uController to learn?
in [Design]
|
Prev: 1000V high side gate drive
Next: Micpre of Graham
From: jasen on 22 Mar 2007 05:31 On 2007-03-17, bungalow_steve(a)yahoo.com <bungalow_steve(a)yahoo.com> wrote: > the AVR series hasen't increased in performance in years (speed, a/d > resolution, DMA, fifo buffers, divide instructions etc). Many of them are doing 20 MIPS now, that wasn't available two years ago, built-in full speed USB is new too, It's an 8-bit microcontroller it doesn't need that extra stuff ... Bye. Jasen
From: jasen on 22 Mar 2007 05:10 On 2007-03-16, Anthony Fremont <spam-not(a)nowhere.com> wrote: > TT_Man wrote: >>> As you said, PIC is king and it is for a reason, they work. >>> >> Only if you can get to grips with the appalling op code set..... OK >> if you can program in C , I suppose.I can't/won't > > I only do assembler on the PIC too. What's wrong with the op-code set? > It's RISC, no it's not, it has too few registers to qualify. > it has 35 instructions, it's not supposed to be luxurious. It's > supposed to be functional and fast....it succeeds. It always seemed kind of awkward and slow slow to me. Bye. Jasen
From: Anthony Fremont on 23 Mar 2007 07:55 jasen wrote: > On 2007-03-16, Anthony Fremont <spam-not(a)nowhere.com> wrote: >> TT_Man wrote: >>>> As you said, PIC is king and it is for a reason, they work. >>>> >>> Only if you can get to grips with the appalling op code set..... OK >>> if you can program in C , I suppose.I can't/won't >> >> I only do assembler on the PIC too. What's wrong with the op-code >> set? It's RISC, > > no it's not, it has too few registers to qualify. By whose definition? It stands for Reduced Instruction Set. 35 instructions is pretty reduced IMO. >> it has 35 instructions, it's not supposed to be luxurious. It's >> supposed to be functional and fast....it succeeds. > > It always seemed kind of awkward and slow slow to me. Compared to what? 10MIPs on a few mA is pretty good in my book.
From: Anthony Fremont on 23 Mar 2007 08:53 jasen wrote: > On 2007-03-17, bungalow_steve(a)yahoo.com <bungalow_steve(a)yahoo.com> > wrote: > >> the AVR series hasen't increased in performance in years (speed, a/d >> resolution, DMA, fifo buffers, divide instructions etc). > > Many of them are doing 20 MIPS now, that wasn't available two years > ago, built-in full speed USB is new too, 20 MIPS, on a MEGA. Those aren't backwards compatible with the tradition AVRs are they? > It's an 8-bit microcontroller it doesn't need that extra stuff ... Speak for yourself. Since when is A/D resolution not important for an 8 bitter?
From: krw on 23 Mar 2007 09:49
In article <1307g1itfi6is9d(a)news.supernews.com>, spam-not(a)nowhere.com says... > jasen wrote: > > On 2007-03-16, Anthony Fremont <spam-not(a)nowhere.com> wrote: > >> TT_Man wrote: > >>>> As you said, PIC is king and it is for a reason, they work. > >>>> > >>> Only if you can get to grips with the appalling op code set..... OK > >>> if you can program in C , I suppose.I can't/won't > >> > >> I only do assembler on the PIC too. What's wrong with the op-code > >> set? It's RISC, > > > > no it's not, it has too few registers to qualify. > > By whose definition? It stands for Reduced Instruction Set. 35 > instructions is pretty reduced IMO. Actually, it stands for "Reduced Instruction Set Complexity". It has nothing to do with the number of instructions (PowerPC is certainly RISC, yet has hundreds of instructions in even more varieties), rather the complexity of the instructions. For example, no arithmetic operations on memory are allowed, only load/stores. > >> it has 35 instructions, it's not supposed to be luxurious. It's > >> supposed to be functional and fast....it succeeds. > > > > It always seemed kind of awkward and slow slow to me. > > Compared to what? 10MIPs on a few mA is pretty good in my book. > -- Keith |