STE V1.5 32MHz BOOSTER - STATUS

Help & information about the STE V1 booster.
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exxos
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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by exxos » Fri Nov 30, 2018 11:55 pm

Its died.. so 40MHz is still a no-go. Saying that, I will put back "slow mode" to rule out ROM speed issues..
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by exxos » Mon Dec 03, 2018 1:14 pm

Another quick update, 40MHz was left running all day Saturday, I'm not at home on weekends, so someone else was keeping a eye on it for me.. We don't actually know how long it was for, somewhere between 4-7 hours. This was without ROM running faster as I just wanted to test the raw CPU speed.. But basically I am not happy that is going to be reliable.

The ROM clearly is having issues at 40MHz. I am not really surprised about this as mentioned before. We are really down to a fine line of hardware tolerances on everything. So to keep a happy medium with everything, boosters will be running at 36MHz.

Users can of course remove the wait states on the ROM, and users could even try changing the oscillator for a 40MHz one. Clearly some people get lucky with this but it is to hit and miss to manufacture the booster with a 40MHz osc. Really though, other than 34% extra on integer division, there is not really any advantages to this speed.

In any case, it is pretty clear that these ATF chips are working a lot better than the original GAL's I was using.

So hopefully, finally, I can finish off a few of these boards and forget about this project for a while and work on something else :)
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by troed » Mon Dec 03, 2018 1:21 pm

exxos wrote:
Mon Dec 03, 2018 1:14 pm
In any case, it is pretty clear that these ATF chips are working a lot better than the original GAL's I was using.
That in itself is a great finding that hopefully will benefit other hw builders for years to come.

(My 22V10 -10 at home are Lattice, I checked)

/Troed

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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by exxos » Mon Dec 03, 2018 2:32 pm

troed wrote:
Mon Dec 03, 2018 1:21 pm
That in itself is a great finding that hopefully will benefit other hw builders for years to come.

(My 22V10 -10 at home are Lattice, I checked)
These are the 2 GAL's I have been using...

The top one works absolutely fine and is a genuine 7ns.

The bottom ones, basically overall don't work at all. If they do work, not a very long. These were 12ns/15ns type parts so obviously reprinted. Even so, 15ns parts are the ones I am using now (ATF) and work absolutely fine. They should be good up to 80MHz anyway. Even 25ns parts should be fine really. So I really don't know what the problem is with these chips. They just seem like really really bad tolerances or something. Can only really assume they are factory rejects or something. Or used chips which have been subject to a lot of abuse which has damaged then somehow.

IMG_3638.JPG
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4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by sandord » Mon Dec 03, 2018 2:35 pm

It's the chip mob!

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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by exxos » Tue Dec 04, 2018 10:59 am

9.5 hours running with the Atmel GAL :thumbup:

Now to test some more out... obviously its not really viable to test each GAL for literally all day, but as they seem good so far, will have to limit to a couple of hours each test..

Though each final booster will be tested all day anyway... might take a while...

Need to look at my monitor today, needs a re-cap somewhere I think as its acting poorly :(

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4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by Forgottenmyname » Tue Dec 04, 2018 11:05 am

Cool, well done.

And don't you think it's time to buy a monitor of a more manly shade of pink :D :shock: :P

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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by sandord » Tue Dec 04, 2018 11:14 am

Forgottenmyname wrote:
Tue Dec 04, 2018 11:05 am
Cool, well done.

And don't you think it's time to buy a monitor of a more manly shade of pink :D :shock: :P
Hey, this is 2018. No man should be ashamed for any colour :mrgreen:

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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by exxos » Tue Dec 04, 2018 7:02 pm

Dual processing now..

Machine on floor is busy testing chips... machine on tiny table is testing boosters which will be heading to my store...

1.jpg
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4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by sandord » Tue Dec 04, 2018 7:06 pm

exxos wrote:
Tue Dec 04, 2018 7:02 pm
Dual processing now..

Machine on floor is busy testing chips... machine on tiny table is testing boosters which will be heading to my store...

1.jpg
Great, looking forward to it!

That table looks suspicuously (this is probably a Dutchism) like the famous IKEA model. I've got two bolted together on top of each other, using it as a stand for my laster printer :)

Though having Atari hw sitting on it is ALWAYS better :lol:

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