1040STF: Bus resistors upgrade and C070789 CPU relocator [0237]

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call286
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1040STF: Bus resistors upgrade and C070789 CPU relocator [0237]

Post by call286 »

As I'm slowly getting into the Atari game and arming with gadgets from Exxos a question for the madatory fixes came to mind.

I plan on upgrading the bus resistors to 2k2 arrays, already ordered the parts.
Also i got a C070789 CPU relocator board (# [0237]) here.
There are resistor packs on the relocator board, but they are 4k7 arrays. The shop states they are bus pullups.

Do i still need to replace the arrays on the STF board with 2k2 ones or should that be other values?
I hope this is not a question that is answered already and my search-fu failed me :)
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Re: 1040STF: Bus resistors upgrade and C070789 CPU relocator [0237]

Post by exxos »

If the resistors are on the relocator IE #0237, then there's no need to do the motherboard ones.
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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call286
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Joined: Tue Jun 21, 2022 8:04 am

Re: 1040STF: Bus resistors upgrade and C070789 CPU relocator [0237]

Post by call286 »

Great, thank you for clarification exxos :).
Yes i bought that relocator from your store.
So I'll try it with relocator and not doing the resistors on the board.
And i assume i still got the option to remove them from the relocator and change the resisors on the STF board if something plays up :thumbup:
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Re: 1040STF: Bus resistors upgrade and C070789 CPU relocator [0237]

Post by exxos »

call286 wrote: Sun Jul 24, 2022 10:32 pm.
And i assume i still got the option to remove them from the relocator and change the resisors on the STF board if something plays up :thumbup:
True. But on a STFM it will end up as 3.2k anyway. I don't think there will any any problems with those values.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
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