Usually I use 16F877A for PWM and ADC. If those are not required, then I'll go for 16F84A. Haven't tried 18F though

sh*t, i dunno any of these chips. It's not my field anyway
I only know Intel 8051, hahaha.

These are so called PIC microcontrollers rite ? I used to learn how to program these chips in the Uni long time ago by writing chip instruction specific assembly code. fun stuff.

Now dealing with a lot of 32 bit processors like powerpc , ARM. As microblaze(xilinx) and NIOS(altera) seems to be getting more and more acceptable in the market , there's a plan to actually put all these softcore processors into the FPGA !!!! more work !

The good thing abt softcore processor is that it's just so flexible. i can hook up anything i want thru the peripheral bus. i can even include or exclude a simple FPU.

normally what kind of support do u need?

design support. let say we use some of their IPs like some DDR2 memory interface(it's too commom nowadays , don't wanna waste time designing it) , we might come into problems integrating into our design. Or maybe we need to understand if the change the pin constraint specify by the vendor , how would it impact timing ?

Most of the time we don't care much about the rams , the async FIFOs , adders and so on has we already have so many proprietary blocks that we need to design. So with their design support , we can get more help if we come across problems from things that are not designed by us.

Yeah, its PIC's microcontrollers there is a C compiler for it but then I still prefer assembly.

I was involve in Robocon, so microcontroller programming is essential.

Sorry just now forgot to ask something
How u use these chips to control the pulse width in general.
I mean, u setup the intervals or taking in some inputs and automatically generate the output based on an algorithm?

halo is an expert in this field. He knows both Xilinx and Altera products very well.

The reason that i ask is because i'm a little bit surprised when you said that your team get the support from s'pore. As far as i understand, altera in penang is set to become one of the regional support center in asia and i think there is a particular department which support these though they dont visit customers. In your case, i believe what you need is software support right? since all the megacore functions or IP blocks that you used is generated using software.

charge-n-go, i'm not expert la, curi makan onli

This post has been edited by halo: Nov 21 2006, 06:18 PM

It depends on the input clock also. For example, the input clock is 20Mhz. A PWM 8-bit registry specifies the percentage of the input clock to the PWM generated. If you put 00000000 to the registry, means the PWM will be 0Hz, if you put 11111111 to the registry, the PWM will be 20Mhz, if you put 10000000, the PWM will be 128/255*20MHz. Hope that you get what I mean.

Yup, understand
thanks !

Actually i suck in electrical stuff, hope you can explain a lil more on PWM.
How can we determine the output quality of a PWM controller?
Does higher clock result in better output waveform?
I heard that some PWM controller are better than another, what aspects they are comparing to identify PWM A > PWM B?

heh? U curi minum kopi only. I only curi makan
Hey, why not u talk about FPGA architecture here? I believe many ppl will benefit from ur post.

This post has been edited by charge-n-go: Nov 21 2006, 06:41 PM

Ok, as you know for altera support , you have to go thru achieva components , and for xilinx , you go thru avnet. They are more distributors in asia pacific and i am not going to name everyone , so sorry about that. So we asked altera/xilinx for design support , everytime we still have to go to the s'pore site. penang might be the regional support center , but we still have to go to distributors.

err, not cut away(if can do it without making a new mask, please tell me, i'll split the earnings with you )
just think of it as a FPGA but with lesser programmability

p/s: oi, seems like u're damn free, no work to do?

i'll answer y u go to Singapore instead of Penang
coz Altera penang dun really focus much of their energy on FPGA
i'm sure Halo is aware of this too

This post has been edited by X10A Freedom: Nov 21 2006, 08:27 PM

Maybe i heard wrongly from halo, hahaha.
Well, for CPU it is possible, but surely need a new mask. (think of the chopped cores and reduced L2 cache). If no nit new mask, i'll go up and find u to discuss our big profit business ady

p/s: oi, I offwork at 4.30pm one la, i am OT-ing without $, must enjoy a bit to release tension one ma

icic, thanks for the info

starting to learn how to program Intel 8051

Oh man

C???? try out micro C...i'm using it right now...kinda easy and nice...^^

hahah, Freedom, so far so good? how's the food in cafeteria?

yup, structured asic is also like that
it's the mask tat really kills
offwork so soon? damn, any vacancies at ur place?

erm, still ok
cafeteria's food is ok, just repetitive

waa...i want to join this thread also....comp eng...
err...i wanna ask something....anyone know about object detection system??