That is not really a good idea unless you shorted something out or used the wrong value or fitted incorrectly etc. The resistor fix has been present for a number of years on likely 100s of machines now without problem.
Mega ST2, UltraSatan and DMA(?) issues
Re: Mega ST2, UltraSatan and DMA(?) issues
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.
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.
Re: Mega ST2, UltraSatan and DMA(?) issues
Ya... I'm an idiot.
I ordered the 2.2K instead of the 10K pack from your website. I'll be swapping that out later today.
Re: Mega ST2, UltraSatan and DMA(?) issues
Been away from the ST for a bit, but still having issues with the ACSI port on my Mega ST2 machine...
At this point I have the CORRECT resistor pack mounted to my DMA chip. I have not replaced any data or address bus resistor packs... I'm currently trying to find a how-to for this particular machine so I identify the correct parts.
I have used the UltraSatan (ID1 and ID2) on an ST with 1.02 TOS and an STE (I don't remember the TOS version) and the unit did work better - but still had issues with some of my SD cards. I've separated the troublesome SD cards from my batch to keep the confusion to a minimum.
Just now I used the PP hard disk driver to partition and initialize a good 8GB SanDisk card with a number of "C16" 512MB partitions. I'm using TOS 1.04, so this size should be acceptable. I can put the SD card into a PC and copy files to these partitions. If I boot the SD card in my ST it sees all the partitions and I can see the files that I put onto the card using my PC. If I try to copy anything to that SD card in my ST, it seems to work, but then there are no files displayed for that drive. If I reboot, I can see the content of the drive again, but none of the files I tried to copy are there - EXCEPT for the first file, but it is 0 bytes long.
Another related issue is that I have a MegaFile60 using ID3. If I connect it instead of my UltraSatan the ST find the device ID3, but says it's unknown.
So... at this point, is changing the data/address bus resistor packs going to help? Is there a FAQ for this process in a Mega ST2? (Should https://www.exxosforum.co.uk/forum/viewt ... 235#p40318 work for a Mega ST2?)
{edit}
Just for the sake of completeness...
- My Mega ST2 is running with a new Meanwell PSU.
- I have tried three different power adapters on the UltraSatan with no change in operation.
At this point I have the CORRECT resistor pack mounted to my DMA chip. I have not replaced any data or address bus resistor packs... I'm currently trying to find a how-to for this particular machine so I identify the correct parts.
I have used the UltraSatan (ID1 and ID2) on an ST with 1.02 TOS and an STE (I don't remember the TOS version) and the unit did work better - but still had issues with some of my SD cards. I've separated the troublesome SD cards from my batch to keep the confusion to a minimum.
Just now I used the PP hard disk driver to partition and initialize a good 8GB SanDisk card with a number of "C16" 512MB partitions. I'm using TOS 1.04, so this size should be acceptable. I can put the SD card into a PC and copy files to these partitions. If I boot the SD card in my ST it sees all the partitions and I can see the files that I put onto the card using my PC. If I try to copy anything to that SD card in my ST, it seems to work, but then there are no files displayed for that drive. If I reboot, I can see the content of the drive again, but none of the files I tried to copy are there - EXCEPT for the first file, but it is 0 bytes long.
Another related issue is that I have a MegaFile60 using ID3. If I connect it instead of my UltraSatan the ST find the device ID3, but says it's unknown.
So... at this point, is changing the data/address bus resistor packs going to help? Is there a FAQ for this process in a Mega ST2? (Should https://www.exxosforum.co.uk/forum/viewt ... 235#p40318 work for a Mega ST2?)
{edit}
Just for the sake of completeness...
- My Mega ST2 is running with a new Meanwell PSU.
- I have tried three different power adapters on the UltraSatan with no change in operation.
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Re: Mega ST2, UltraSatan and DMA(?) issues
Just because SD cards work in one machine there is no guarantee they will work in another I'm afraid. I use only branded cards, and in most scenarios find that basic SD cards, so nothing high speed, will give you the best results.
That's why I tend to buy batches of the blue Sandisk cards that are the really basic ones. I have had no reliability issues with them across multiple platforms, so my CosmosEx, my US my SIDE3 for Atari 8Bit, my Erebus for Oric Atmos, my ZX81 ZXExpand+ and last but by no means least my vDrive QL.
If you haven't done the databus resistor packs it should be on your to-do list for sure.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...