STE V1.5 32MHz BOOSTER - STATUS

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

Post by exxos » Tue Nov 20, 2018 10:58 pm

So built it up.. didn't work.. was about to throw it out of the window, then saw a tiny short between the CPU pins, gnats knacker sized.. removed it, and now its running away!

One thing I have noticed (oddly) is these boosters seem to be running fine with 10K on my motherboard alone.. so possible I may not fit the SIL's on later boards... Need to do more testing first though..

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EDIT:

Trying 40MHz on this board.. I forgot to mention I got a new batch of CPU's. This one "so far" is running at 40MHz with waitstates on ROM. I have heated it up to "ow ya'feker hot" and its still going... CPU's crashed easily with a little heat on previous tests.. so MIGHT be possible some of these CPU's will run at 40MHz... time will tell...

EDIT2:

Spoke to soon it seems :roll:
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 PhilC » Wed Nov 21, 2018 7:46 pm

How far did this one get? any more reliable than the red ones?
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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by exxos » Wed Nov 21, 2018 8:24 pm

Forgottenmyname wrote:
Wed Nov 21, 2018 7:46 pm
How far did this one get? any more reliable than the red ones?
Been out all day.. only just got home. I had to turn it off last night but seems fine at 36MHz. 40MHz was still a no go with these CPUs.
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 Maeke » Wed Nov 21, 2018 11:16 pm

well 36 is still a huge gain from the stock cpu.
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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by exxos » Wed Nov 21, 2018 11:28 pm

The green board has been running almost 3 hours now.. so that seems ok.

Will try building up a couple more tomorrow and see if they work fine...

I may also try (again) to solder the header pins in one go as well. I ended in a mess trying that last time with the pins on the MMU adapter... viewtopic.php?f=18&t=334&p=2056
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 » Wed Nov 21, 2018 11:47 pm

Back to the sockets..

So as suspected, the motherboard with integrated blitter has a foxconn where the booster doesn't want to stay in the socket without being forced.

The TZT socket ( external blitter) is the one I designed the booster on, and fits perfectly.

I can't really fix that issue without doing 2 seperate booster revisions for each socket (they maybe more brands!) and even had to do (5 I think ) revisions before I got it to fit that socket correctly.

I think really the booster needs a re-design to look more like the previous V1 layout. Where the CPU is "outside" the PLCC socket, then header pins could be placed in the correct place in the socket.. but then thats going to need a 4 layer board, twice the cost.. the PCB would be twice the size.. twice the cost.. and testing would have to be done all over again..

If I was doing a larger board, I would use a larger PLD and add ROM on there as well.. but thats gone back to designing a whole new booster again. Just not worth the time and costs involved.

So I may do a tweaked revision to fit the foxconn sockets better, but for now, people will just have to put up with it staying in the sockets on its own.

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This was just funny....
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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

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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by exxos » Thu Nov 22, 2018 3:07 pm

Next test batch of 4 in the oven...

IMG_3584.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
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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by sandord » Thu Nov 22, 2018 3:14 pm

exxos wrote:
Thu Nov 22, 2018 3:07 pm
Next test batch of 4 in the oven...


IMG_3584.JPG
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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by exxos » Thu Nov 22, 2018 3:34 pm

Onto close inspection...

in.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
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Re: STE V1.5 32MHz BOOSTER - STATUS

Post by exxos » Thu Nov 22, 2018 4:30 pm

First one is now testing :)

Despite best efforts on checking, one of the CPU pins was not contacting the PCB. A quick heat up with the soldering iron fixed that.

I could really do with a quicker way of testing that sort of thing. Currently I have to go round all the CPU pins with my multimeter to check for shorts, then go round them all again between the CPU pins and the header pins. :roll:
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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