POLL: What speed are you running?

Oldbitcollector (Jeff) · 2009-09-14 13:04

Some of the more recent video drivers have provided the opportunity to extended capabilities
at higher speeds. I'm curious what speeds people are running their Propellers these days.

Since polling doesn't work on this forum, I've created a quick xtal POLL.

POLL: What speed is your Propeller running at?

: View Results

OBC

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
New to the Propeller?

Visit the: The Propeller Pages @ Warranty Void.

mctrivia · 2009-09-14 13:37

160 but I have purchased some much faster crystals and a pelture to see if I can get 400

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
propmod_us and propmod_1x1 are in stock. Only $30. PCB available for $5

Want to make projects and have Gadget Gangster sell them for you? propmod-us_ps_sd and propmod-1x1 are now available for use in your Gadget Gangster Projects.

Need to upload large images or movies for use in the forum. you can do so at uploader.propmodule.com for free.

Coley · 2009-09-14 13:56

@mctrivia

160MHz?

Really?

What is the core crystal speed and multiplier you are using as I have done some tests with differing crystals and pll modes and have not got near 160MHz yet.

I've found that the Prop is stable to around 110 MHz @ 3V3 with some extra caps around the supply pins but have had to increase the core voltage to get it to go any faster.

I know Sapieha has had 120MHz (15MHz x 8) for a few months now but I can't get that stable at 3V3 and certain application choke more easily than others (where PASM flags are used extensively)

I've also tried a direct clock source from a 133MHz 3V3 oscillator with no success unless we up the core voltage.

Coley

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
PropGFX - The home of the Hybrid Development System and PropGFX Lite

mctrivia · 2009-09-14 14:00

Sorry to early. Been thinking super prop to much which takes 160-200mhz crystal and divides by 2 for prop.

I am only doing 80 at moment and attempting to get a 12 something crystal working.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
propmod_us and propmod_1x1 are in stock. Only $30. PCB available for $5

Want to make projects and have Gadget Gangster sell them for you? propmod-us_ps_sd and propmod-1x1 are now available for use in your Gadget Gangster Projects.

Need to upload large images or movies for use in the forum. you can do so at uploader.propmodule.com for free.

Bobb Fwed · 2009-09-14 17:09

Its not on the list, but I imagine few people are using it (but it is what I am using):
8MHz + PLL4X == 32MHz
The 8MHz because that's what I can get the cheapest. And 4X because it is the slowest possible option that still allows me to use all my objects correctly.
With the 8MHz XTAL, if I bump up the voltage to 3.6V and keep the whole thing cool (cool for room temperature anyway: 65F or lower -- I guess it may not work for all Props), I can run it at 128MHz too! I have no application for that, but others may.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
April, 2008: when I discovered the answers to all my micro-computational-botherations!

Oldbitcollector (Jeff) · 2009-09-15 01:30

Wow.. Some very interesting feedback so far that should be useful to programmers here.

Thanks Gang!

OBC

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
New to the Propeller?

Visit the: The Propeller Pages @ Warranty Void.

Cluso99 · 2009-09-15 01:40

OBC: I am still running 5MHz x16 = 80MHz. I have 6MHz so I should try that. I am hoping to get 100-120MHz on new designs using 12.5MHz x 8 = 100MHz or 15MHz x 8 = 120MHz. Nothing tried as yet.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Links to other interesting threads:

· Home of the MultiBladeProps: TriBlade,·RamBlade, RetroBlade,·TwinBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: Micros eg Altair, and Terminals eg VT100 (Index) ZiCog (Z80) , MoCog (6809)
· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBladeProp is: www.bluemagic.biz/cluso.htm

potatohead · 2009-09-15 03:33

80 Mhz Demoboard, others..

96 Mhz HYBRID

soon, 100 Mhz to be tested on both.

I see in the poll, over half the props reported run at 80. IMHO, since 80Mhz is the reference design speed, feature function breakdowns should take that into account. Best form is probably to make sure baseline functions operate nicely at 80, then provide simple options for speeds over that.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Propeller Wiki: Share the coolness!
Chat in real time with other Propellerheads on IRC #propeller @ freenode.net
Safety Tip: Life is as good as YOU think it is!

DogP · 2009-09-15 04:52

I typically use proto boards, so 80MHz... and on my solderless breadboard w/ the DIP (which I rarely use), 96MHz.

DogP

Sapieha · 2009-09-15 08:04

Hi Oldbitcollector.

In Yours POLL table You dont have frequencies ... I run.
15MHz PLLx8. I run it more that 5 month reliable without any problem.
But only on Triblade and USB version of Parallax ProtoBoard with extra Tantalums instaled from them.
And some extra caps instaled by me. All my tests are on standard Voltages and in room temp. -25-28C
Have ben run some tests on biger frequencies to but with some errors. I look on results for at see why.
But at now I'm are busy with other things that speed tests must wait

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Nothing is impossible, there are only different degrees of difficulty.
For every stupid question there is at least one intelligent answer.
Don't guess - ask instead.
If you don't ask you won't know.
If your gonna construct something, make it·as simple as·possible yet as versatile as posible.

Sapieha

Post Edited (Sapieha) : 9/15/2009 4:44:11 PM GMT

Cluso99 · 2009-09-15 08:51

Sapieha: A typo, that should be 15MHz PLLx8 = 120MHz (not x6)

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Links to other interesting threads:

· Home of the MultiBladeProps: TriBlade,·RamBlade, RetroBlade,·TwinBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: Micros eg Altair, and Terminals eg VT100 (Index) ZiCog (Z80) , MoCog (6809)
· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBladeProp is: www.bluemagic.biz/cluso.htm

jazzed · 2009-09-15 14:41

I use 99.92MHz (6.245MHz*16) on my Propalyzer chip. I generally find using different frequencies more disruptive than beneficial though.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
--Steve

Propeller Tools

Post Edited (jazzed) : 9/15/2009 3:51:53 PM GMT

HollyMinkowski · 2009-09-15 15:40

100Mhz
6.250xtals

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
"Where am I? Where am I going? Why am I in a handbasket?"

Oldbitcollector (Jeff) · 2009-09-15 16:55

We need a few more POLLs like this..

I expected 5Mhz/80Mhz to be the leader. After all, everyone gets this crystal out of the box.
What I didn't expect was to see the 6.25 so widely used. Even more than the Hydra.

Neat stuff so far.. (Results Link in the top thread)

OBC

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
New to the Propeller?

Visit the: The Propeller Pages @ Warranty Void.

Bill Henning · 2009-09-15 20:06

I am happy to see the wide spread usage of my 6.250MHz crystals

I only voted once each for 5MHz and 6.250MHz btw, even though I have many instances of both running here.

Oldbitcollector said...
We need a few more POLLs like this..

I expected 5Mhz/80Mhz to be the leader. After all, everyone gets this crystal out of the box.
What I didn't expect was to see the 6.25 so widely used. Even more than the Hydra.

Neat stuff so far.. (Results Link in the top thread)

OBC

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Please use mikronauts _at_ gmail _dot_ com to contact me off-forum, my PM is almost totally full
Morpheus & Mem+dual Prop SBC w/ 512KB kit $119.95, 2MB memory IO board kit $89.95, both kits $189.95
www.mikronauts.com - my site 6.250MHz custom Crystals for running Propellers at 100MHz
Las - Large model assembler for the Propeller Largos - a feature full nano operating system for the Propeller

Cluso99 · 2009-09-26 02:36

OK, TriBlade Blade #2 (running ZiCog & CPM) at 6MHz xtal for 96MHz. Also runs 80x25 character composite video using potatoheads drivers.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Links to other interesting threads:

· Home of the MultiBladeProps: TriBlade,·RamBlade, RetroBlade,·TwinBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: Micros eg Altair, and Terminals eg VT100 (Index) ZiCog (Z80) , MoCog (6809)
· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBladeProp is: www.bluemagic.biz/cluso.htm

Whit · 2009-09-26 02:50

I have not tried the 6.25 yet.

I'm still poking along at 5Mhz/80Mhz...

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Whit+

"We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths." - Walt Disney

mikediv · 2009-09-26 02:54

100 MHz but I also have a Pelitier Junction on top of the 40 pin prop even at 100 my prop chip gets very hot I also tried over clocking my prop stick USB but it got so hot at 100 and it now has a few I/O pins that no longer work P4 is dead P7 is dead and P21
other than that I left it on all night running LED blinkers and it is working but at 80 Mhz I also found that anything over 5.8 volts on the wounded propstick and it gets burning hot

Cluso99 · 2009-09-26 03:00

mikediv: I don't understand your comments??? Are you cranking up the voltage??? I am just using the standard 3V3 and 6MHz xtal with PLLx16.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Links to other interesting threads:

· Home of the MultiBladeProps: TriBlade,·RamBlade, RetroBlade,·TwinBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: Micros eg Altair, and Terminals eg VT100 (Index) ZiCog (Z80) , MoCog (6809)
· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBladeProp is: www.bluemagic.biz/cluso.htm

Mike Huselton · 2009-09-26 03:27

I recently started using 100Mhz with 6.250 xtals. Protoboards, new Professional Propeller board and Demo Board working fine with the new crystals.
I install 0.1 mfd and 10 mfd caps at 3 locations on my boards as per Saphea.

The only error I get is when I forget to take account of the higher frequency in the PLL multiplier expression. This is my pilot error...

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
JMH

Post Edited (James Michael Huselton) : 9/26/2009 3:32:58 AM GMT

Toby Seckshund · 2009-09-26 08:24

I use mostly 5MHz PLL16x, a couple of times 6MHz PLL16X, one at 10MHz PLL8X (beause I ran out of 5MHz ones).

12MHz PLL8X (PLL16X didn't work) and 14.3MHz PLL8X along with the 4.43,8.86 and 17.4 trio to see if the PAL chroma could be improved (didn't help much).

The people that answer this question will mostly the ones that use the the non standard frequencies, 90% probably use the given 5x16.

Only using 40 pin DIPs and always heavily decoupled, with the power pins cross coupled under the chip (I wish they would un-cross them).

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Style and grace : Nil point

heater · 2009-09-26 09:45

I have Blades 1 and 2 of my TriBlade board running at 104.8576MHz
6.5536MHz XTAL and 16*PLL.

Regular 3.3v supply. I added the optional optional capacitors on the back side of the board. Don't know if it really needs them.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
For me, the past is not over yet.

Cluso99 · 2009-09-26 11:09

I don't have the caps fited under the prop on Blade #2 using 6MHz and it is fine. However, I did take great care with the layout to get it right. The caps are definately required on some pcbs and I recomment they be fitted to any overclocking on the TriBlade.
I just want to see how much I can get to see where the limits apply, but remember, there are possible variations in the chips themselves.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Links to other interesting threads:

· Home of the MultiBladeProps: TriBlade,·RamBlade, RetroBlade,·TwinBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: Micros eg Altair, and Terminals eg VT100 (Index) ZiCog (Z80) , MoCog (6809)
· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBladeProp is: www.bluemagic.biz/cluso.htm

Sapieha · 2009-09-26 12:31

Hi All.

To all that not understand ned of decoplings Capacitors I have only one question "Look on PC motherboard and answer me if all caps around and bottom on CPU is only for decoration?"

Regards
Christoffer J

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Nothing is impossible, there are only different degrees of difficulty.
For every stupid question there is at least one intelligent answer.
Don't guess - ask instead.
If you don't ask you won't know.
If your gonna construct something, make it·as simple as·possible yet as versatile as posible.

Sapieha

mikediv · 2009-09-26 19:45

Clusso yes I stuck the Pelitier on top of the 40 pin prop chip because it would get so hot I could not touch it I thought everyone was raising the voltage to 5 volts? Also I don't know if you remember a while back we were all discussing using crystals that were of uneven
frequencies like 6.444 or 5.588 . I thought the consensus was it was a waste since the clock had to be an evenly divided?

Guys also what value decoupling caps is everyone using?

Post Edited (mikediv) : 9/26/2009 8:09:32 PM GMT

hippy · 2009-09-26 19:46

I use 7.3728MHz ( x 16 ~= 118MHz ) on unmodified ProtoBoards for hobby use.

With Sapieha's discovery I would almost certainly be willing to use 15MHz ( x 8 = 120MHz ) for commercial product to the hobby market, and would have no qualms at all in using 6.25MHz ( x 16 = 100MHz ) for a more mainstream commercial product.

The 50% gain for a chip-total of 240MIPS at 15MHz over 160MIPS at 5MHz is too sweet to let pass by, but maybe that's just me

Toby Seckshund · 2009-09-26 21:08

I have upped the volts to 4.2V to allow the Z80 to bolt on and ran the prop at 10x8. It showed no signs of distress but then I wasn't make it blat out some horrendious VGA resolution or other high speed clocking gymnastics.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Style and grace : Nil point

TheWizard65 · 2009-09-26 21:36

I'm using 5mhz x 16 = 80mhz although I do have faster crystals I just haven't used them yet.

photomankc · 2009-09-26 21:38

Just got my Propeller Platform working at 100MHz (6.250x16) and so far so good.· It's a little bit of overkill for it's current roll as a prototype·digital thermostat but hey!· Fun to think my thermostat has more computing umph than my highschool days·IBM PS2 did.

hover1 · 2009-09-26 22:59

Been running 5 Proto Boards @ 100MHz (6.25 x 16x) for a few months now. Nothing has been timing critical, just a bunch of LED arrays (400 LED's) , several servos, VMUSIC2 MP3 Players.

My other stuff is running standard@ 5MHz. I have one more 6.25MHz xtal to play with. Now...what to put it into?

Jim

QuattroRS4 · 2009-09-27 02:42

6.25 x 16 without issue ...

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
'Necessity is the mother of invention'

'Those who can, do.Those who can’t, teach.'
'Convince a man against his will, he's of the same opinion still.'

·

POLL: What speed are you running?

Comments