exxos blog - random goings on

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Re: exxos blog - random goings on

Post by exxos » Fri Oct 18, 2019 10:13 pm

Feels like I been at it a million years :roll: :lol:

Its about 95% routed now. The main issue really is the control lines from GLUE to every other chip because loads of signals need to route right across the board, which isn't simple as I already have multiple crossing signals on 3 layers already, so there's no room left . In hindsight the GLUE might have been better going near the ACIA's . Though it begs the question is my very first original route ( viewtopic.php?f=77&t=14#p41) where the chips were at the bottom of the board with a common bus, might actually be better *if* it could be squashed down a lot more.
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: exxos blog - random goings on

Post by exxos » Mon Oct 21, 2019 1:14 pm

29 unroutet airwires hanging off the bus..
29 unroutet airwires hanging off the bus..
and if one green airwire should accidentally on purpose get routed...
There be 28 unroutet airwires hanging off the bus..

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:crazy: :crazy: :crazy: :crazy:
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: exxos blog - random goings on

Post by exxos » Mon Oct 21, 2019 11:36 pm

Wasn't me :shrug:

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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: exxos blog - random goings on

Post by exxos » Wed Oct 23, 2019 11:58 am

The alt-ram boards are finally on order..

I tried to get JLC to make them, but they claim its all "out of spec" and talking to them about issues is a uphill battle, even more so since Icky sent them a H4 for review 2 weeks ago and they not replied.

So I have passed it over to my regular PCB guy who says no problem to make them, though unfortunately they end up 4x the price of JLC. Though you get the service you pay for I guess.

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These do not have the PLD control chip on them. This current board is designed to stack onto flashy-clock to drive it. Though as this RAM board is "stand alone" it will eventually find its way onto the 50MHz SEC booster board so we can have full speed 50MHz access to "fast-ram".

Once I have a working alt-ram board, I can finally start adding proper benchmarks to GB6 as currently the alt-ram tests are not actually calibrated.
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: exxos blog - random goings on

Post by exxos » Thu Oct 24, 2019 2:55 pm

More Eagle oddities..

Take the yellow track.. it goes from the SMT chip on the left, top layer, then jumpers over the blue tracks, then jumps back to the top layer again :WTF:

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When it could have just gone right across the board on just the top layer.. :roll:

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Anywhos, the last few tracks are tricky as a lot of GLUE control lines to route right across the board.
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: exxos blog - random goings on

Post by exxos » Thu Oct 24, 2019 4:43 pm

and it's done :stars: :stars: :dizzy:

Let's never ever manually route a motherboard again! :stars:

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Got a whole load of tidying up and DRC stuff to do, but hopefully I can get this finished before the weekend :)
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: exxos blog - random goings on

Post by JezC » Thu Oct 24, 2019 5:10 pm

:bravo: :cheers:

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Re: exxos blog - random goings on

Post by Icky » Thu Oct 24, 2019 6:04 pm

exxos wrote:
Thu Oct 24, 2019 4:43 pm
Let's never ever manually route a motherboard again! :stars:
Famous last words ;)

Great work.

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Re: exxos blog - random goings on

Post by stephen_usher » Thu Oct 24, 2019 6:38 pm

I dare you to design the next board with the chips set radially around the GLUE and with circular data and address buses.

All this linearity is so passé. ;) :D :lol:
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.

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Re: exxos blog - random goings on

Post by exxos » Thu Oct 24, 2019 7:08 pm

stephen_usher wrote:
Thu Oct 24, 2019 6:38 pm
I dare you to design the next board with the chips set radially around the GLUE and with circular data and address buses.

All this linearity is so passé. ;) :D :lol:
We already have curves ;)

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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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