Q) Processing speed of FPGA as compared to 8086/80286

[wafer101]

8086 in fpga

I am an RF/Microwave guy since I would like to know more about this.
Would please any expert or so of this field comment:

Not knowing how fast exactly FPGA/PLD's are or what core can you build
in terms of old 8086 or 80286 processing speed how are this programmable chip doing?. Speed permitted would it be possible to embed the 8086/80286 core in FPGA etc. (using VHDL)

Any one encuraged to answer this Q.
another Q) would be: could you make mp3 decoder core Chip in FPGA/PLD.

Bye Wafer101

 

[eltonjohn]

fpga,80286

The 8086 and 286 are very slow chips by today standarts .. The fastest 286 as i recall was 24 Mhz . On the other side the instruction cycle frequency was even smaller .. There was a PROJECT of a 386 compatible open core running at 60 Mhz and that was 10 years ago! .So probably the best way to MEASURE the processing power of a CPU is by the number of processed intructions in a secod .That's the MIPS value ,
The 286 was a 3~4 MIPS cpu .. Today you can FIT a 32 BITS RISC CPU running at 300 Mhz! . or more .. SO nothing to do with those good old days ..
No wonder why they are not manufactured any MORE !

 

[ydao]

80286 vhdl

why do this comparation?
processor do everthing as to the intruction, this is software platform!

 

[wafer101]

fpga 8086

elthonjohn thanx for your reply. But I was not interested in FPGA clock but the complexity of projects u can build. I used for comparisson old CPU's end wether or not u could clone 8086/286 etc. that is make a project as complex as this oldies and have FPGA behave as if they were the actaul. From your A. I got the sense they (FPGA's) might. Surprisengly I once posted a similar Q. and whether or not if possible to implement a PM3 decoder ( just the processor core chip) in FPGA and People answered it was to complex.. strange. I guess then it is not always the case that we get true expert support from this eboard.
sincerely Wafer101

 

[eltonjohn]

80286 processing power

HI WAFER

Listen One thing is to try to clone something that is OLD .. and ANOTHER is try to do something equivalent with today technology then you won't do it the same way ..IS NOT A MATTER OF JUST CLOCK SPEED .. In the case of the 8086 .. this are by today standarts very inefficient chips .. We don't do things like that any more ..those chips are not PIPELINED and the struction set is NOT WELL OPTIMIZED!,. But you can perfectly CLONE them ,we have FPGAS with more THAN ENOUGH resources to DO it .. NOBODY ..will try to do it ..unless the original equipment WAS AERONAUTICAL ,.. then you the life of the ELECTRONICS is supposed to be more than 25 years ..If you can get a part ..you have to clone it. But in the case of your comparaison ?? OK to give you a better insight .letme tell you this i don't think that the 80286 had more than 75,000 transistors
THERE ARE FPGA's WITH 20 MILLION!!!!!!!!!!!!!!!!.
and those transistors switch way much faster ..
SO i still don't get your comparaison CONCERNS..but .. we will get there!