Terrible Fire Accelerators

[plasmab]

Originally Posted by EzdineG

Sorry to hear. Did you reuse the case last time? If so, make sure those USB ports aren’t shorting or something silly.

If not, well damn.

New case. New PSU. PSU is under warranty but I’ve lost time checking everything and reinstalling windows. My 12V rail is sitting around 9V. 5V rail is fine. Swapped every component in the machine.

[Stedy]

Originally Posted by plasmab

The JM20330 is single port. There is only one SATA port on it.

https://www.dropbox.com/s/bpkt2iokdl....-2.3.pdf?dl=0

Humm, a neat all in one solution.

Two things to consider if it does not work in your application.
1) Does the 1.8V supply rise before the +3.3V or is it in parallel with +3.3V?
2) The clock source, rise/fall times should be <2ns, if it is slower, add a schmitt buffer + series terminator.

You'll want edge coupled microstrip as a minimum for the SATA, the edge rates are crazy.

[plasmab]

Originally Posted by Stedy

Humm, a neat all in one solution.

Two things to consider if it does not work in your application.
1) Does the 1.8V supply rise before the +3.3V or is it in parallel with +3.3V?
2) The clock source, rise/fall times should be <2ns, if it is slower, add a schmitt buffer + series terminator.

You'll want edge coupled microstrip as a minimum for the SATA, the edge rates are crazy.

On the TF534S the 1.8V and 3.3V are both linear regulators, same brand and they both are supplied off the 5V rail. The 3.3V reg cannot cope with the power of supplying the 3.3V rail and the stepped down 1.8V.

There arent clocks except for the bare crystal input. Its just a 25Mhz crystal and its rough red neck IDE the other side.

I had a proper analog guy to the skin depth calcs for the sata port... He checked it over and we agreed this would work...



EDIT: I suspect the chip is dead on my board. It came from UT source.

[kgc210]

My system doesn't like that latest bus jed.

At 25mhz with a normal ROM I am greeted with a red screen and flashing LED
With DiagROM I get a nice aqua colour screen.

At 50mhz with a normal ROM I am greeted with a red screen and flashing LED
With DiagROM it will flash a dark blue screen and then a white screen and repeats.

[plasmab]

Originally Posted by kgc210

My system doesn't like that latest bus jed.

At 25mhz with a normal ROM I am greeted with a red screen and flashing LED
With DiagROM I get a nice aqua colour screen.

At 50mhz with a normal ROM I am greeted with a red screen and flashing LED
With DiagROM it will flash a dark blue screen and then a white screen and repeats.

Ok. Weird.

[kgc210]

This pic is the most I could get out of DiagROM

I tried with and without FPU.
Only other thing plugged into the A2000 is the MegaChip for 2MB of Chip RAM.

[plasmab]

Originally Posted by kgc210

This pic is the most I could get out of DiagROM



I tried with and without FPU.

Only other thing plugged into the A2000 is the MegaChip for 2MB of Chip RAM.

Out of ideas. Expected that to boot at least but I haven’t tried the Rev 3 at all

[nogginthenog]

Originally Posted by kgc210

This pic is the most I could get out of DiagROM

I tried with and without FPU.
Only other thing plugged into the A2000 is the MegaChip for 2MB of Chip RAM.

"[40m" etc are ANSI codes for changing the text colour etc. Try some different settings in the Window->Colours section of putty.

[kgc210]

Originally Posted by nogginthenog

"[40m" etc are ANSI codes for changing the text colour etc. Try some different settings in the Window->Colours section of putty.

It only does that on that bus jed file I was testing out, it's an experimental one from last nights stream.

Serial normally works fine.

http://eab.abime.net/showpost.php?p=...postcount=2787

http://eab.abime.net/showpost.php?p=...postcount=2721

[AwoLStill]

Originally Posted by plasmab

Progress killed because my main PC died. PSU again. Brand new one too and wasn’t cheap.

My experience (through my job) is that cheaper ones (in the £15-£25 range!) are considerably more reliable....

[plasmab]

Originally Posted by AwoLStill

My experience (through my job) is that cheaper ones (in the £15-£25 range!) are considerably more reliable....

Had the opposite experience. Find that good RAM and a good PSU gets rid of random crashes. Bought a jeantech that lasted 10 years.. this particular one that died was expensive because it was silent...

[8 Bit Dreams]

Hello TF fellas,
have contacted Stephen after yesturday's stream & was able to obtain a copy of RC2.1 firmware. Have programmed my rev.2 TF & tested it on my A2000 with following results:

1. Sandisk Extreme III 30MB/s 4GB - Workbench crashes @ boot with several errors; system doesen't boot (this CF card works good on A500 with RC2 FW)

2. Sandisk Ultra II 15MB/s 4GB - Workbench starts without a single error, Sysinfo reports correct Mhz frequency (51.8Mhz), IDE works @ 3,4Mb/s i am able to use system, start programs & WHDLoad games (tested BattleSquad, Rick Dangerous & Rainbow Islands atm.) my Zorro II 4MB RAM board is shown up as defective! (so Zorro II detection is screwed up again, same was on RC2 fw with 32Mhz oscillator)

seems that this patch has corrected screen bug (there is no picture problems at all), however, some work is still needed to debug IDE, and Zorro II detection cycle need to be checked too

- - - Edit - - -
Have checked - Zorro II card is running just fine with regular 68k CPU, so detecion isn't working correctly...

[kgc210]

How odd,

That version seems to favor REV 2 boards over REV 3.
I had no luck at all.

[8 Bit Dreams]

Originally Posted by kgc210

How odd,

That version seems to favor REV 2 boards over REV 3.
I had no luck at all.

yes, forgot to add - have done my tests on rev.2 TF card, have corrected my previous post

[Nikodem]

@plasmab - on your recent video I've seen some mentions about TF540 - how soon it could be ready (few months? few years) ? I'm thinking about putting together an TF530 for my A2000, but if an 68040 is around the corner maybe there is no sense in that..?

[8 Bit Dreams]

No one here can tell you how long will it be, even plasmab. it's a hobby project done by one single person, not commercial product, don't forget - plasmab has family and work and million other things to do, so if You watched last video, you should know TF540 will need to be redesigned, and will appear maybe in summer or at Christmas or maybe even next year..so it makes sense to you to build TF530, or You can wait till TF534 will be presented as this card is next in pipeline

[plasmab]

Originally Posted by Nikodem

@plasmab - on your recent video I've seen some mentions about TF540 - how soon it could be ready (few months? few years) ? I'm thinking about putting together an TF530 for my A2000, but if an 68040 is around the corner maybe there is no sense in that..?

It’s likely to be in the 6 month range unless I get a load of free time.

I’m going to make a new TF530 Rev 4 too. That will appear sooner.

[Nikodem]

Originally Posted by plasmab

It’s likely to be in the 6 month range unless I get a load of free time.

I’m going to make a new TF530 Rev 4 too. That will appear sooner.

I've got TF530 rev2 board, so as I want to use it in my A2000 I will have to change the PCB, so maybe I will wait for the rev4 or make my own for A2000 coprocessor slot (especially, that I have already started the design).

[plasmab]

Originally Posted by Nikodem

I've got TF530 rev2 board, so as I want to use it in my A2000 I will have to change the PCB, so maybe I will wait for the rev4 or make my own for A2000 coprocessor slot (especially, that I have already started the design).

Someone already made this for the A2000. See my twitter feed. (please dont reinvent the wheel). But even if you do you'll have the same timing issues as the rev2.

EDIT: https://twitter.com/pottsylvania/sta...98192372396032

[Nikodem]

Originally Posted by plasmab

Someone already made this for the A2000. See my twitter feed. (please dont reinvent the wheel). But even if you do you'll have the same timing issues as the rev2.

EDIT: https://twitter.com/pottsylvania/sta...98192372396032

I am fully aware of this PCB, but I can't contact the author in order to get such PCBs is this one based on rev2 or rev3?