help with programmable logic chips?

[lasersbee]

Even running at 4Mhz clock speed... the PIC Micro Controllers run at
1 MIPS (1 Million Instructions per second)...

 

[danq]

Even running at 4Mhz clock speed... the PIC Micro Controllers run at
1 MIPS (1 Million Instructions per second)...

yeah... what I could have done with one of those when I was in high school!

1966-1969... could probably have replaced all the computational power of the Strategic Air Command or something  

 

[positron]

Even running at 4Mhz clock speed... the PIC Micro Controllers run at
1 MIPS (1 Million Instructions per second)...

Atmel have some good microcontrollers too. Have a look at www.avrfreaks.net there is lots of support in the forums there. You can program them in C with WinAVR which is free and open source based on AVRGCC. It can be used from within atmels AVR Studio where you get a simulator where you can single step through your code. If you have a parallel port, you can make a programmer with a few resistors

I sound like an advertisement


EDIT: Forgot to mention, more MIPS than PIC's. Nearly a mip / mhz. Most instructions take 1 clock cycle. Not that you necessarily need more MIPS.

 

[Benm]

Even running at 4Mhz clock speed... the PIC Micro Controllers run at
1 MIPS (1 Million Instructions per second)...

Indeed... but if you want to make a logic gate that takes perhaps 10 instructions or so, it would have a delay of 10 microseconds - which is unaccaptably bad for discrete logic gates.

 

[lasersbee]

[quote author=lasersbee link=1226648479/0#16 date=1227407989]Even running at 4Mhz clock speed... the PIC Micro Controllers run at
1 MIPS (1 Million Instructions per second)...

Indeed... but if you want to make a logic gate that takes perhaps 10 instructions or so, it would have a delay of 10 microseconds - [highlight]which is unaccaptably bad[/highlight] for discrete logic gates. [/quote]


I agree with you that there are much faster components and micro controllers available...
We (the members here) are just trying to help "danq"  find what he is looking for.....
and answer his questions...

But my app is really simple, limited in function and very few I/O bits - basically it just translates momentary pushbutton switch actions to control a laser driver.

I have a hard time seeing why even a Turttle Slow 1 MIP micro controller could not keep up
with the speed it takes to press a button and to turn ON a Laser Driver.... :-?

There is no sense in buying a 747 to cross the street... IMHO :

 

[Benm]

There is no sense in buying a 747 to cross the street... IMHO

If its bad weather, park it across - you'll get the nice and dry

 

[lasersbee]

There is no sense in buying a 747 to cross the street... IMHO

If its bad weather, park it across - you'll get the nice and dry

;D ;D ;D ;D and block the traffic... ;D ;D ;D