1040STE don't like floppy drive

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PaulJ
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Re: 1040STE don't like floppy drive

Post by PaulJ »

doc wrote: Fri Aug 28, 2020 6:05 pm
Well I'm really scratching my head :roll: . What the hell can it be ? I did all the test with exxos diagnostic cartridge and :
5 - DMA Port test says : D0 DMA time-out Fail at Cycle:000001 (may be it's normal)
The DMA test requires an additional test board that plugs into the 19 pin DMA connector, parallel port, and serial ports. So it will fail without the test board.
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DoG
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Re: 1040STE don't like floppy drive

Post by DoG »

PaulJ wrote: Sat Sep 19, 2020 9:58 pm
doc wrote: Fri Aug 28, 2020 6:05 pm
Well I'm really scratching my head :roll: . What the hell can it be ? I did all the test with exxos diagnostic cartridge and :
5 - DMA Port test says : D0 DMA time-out Fail at Cycle:000001 (may be it's normal)
The DMA test requires an additional test board that plugs into the 19 pin DMA connector, parallel port, and serial ports. So it will fail without the test board.
Olivier sell that wire harness and board and built it on request. http://www.gossuin.be/index.php/shop#atariparts
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exxos
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Re: 1040STE don't like floppy drive

Post by exxos »

DMA test cable may help, but as you are having issues with floppy and seems some odd RAM issues, it hints the DMA chip is damaged.. Though you may just want to change the DMA and 1772 before ordering more stuff anyway.. if that doesn't fix the problem, then I dont think the DMA test kit will really help anyway.

There are also some TTL chips and the MFP which may be at fault in all this as well..

I don't know what it is this week with all these odd floppy issues... Though its why I am moving to the H4/H5 boards as these faults are just appearing faster than I can diagnose them :roll:
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.
doc
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Re: 1040STE don't like floppy drive

Post by doc »

Ok I give up. new DMA and 1772 Chips are too expensive.
Thanks for your help
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Cosmic Puppet
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Re: 1040STE don't like floppy drive

Post by Cosmic Puppet »

doc wrote: Sun Sep 20, 2020 8:20 pm Ok I give up. new DMA and 1772 Chips are too expensive.
Thanks for your help
I just spotted this whilst browsing and thought of this thread:

https://www.ebay.co.uk/itm/Atari-520-ST ... 4057308952

Hope this is okay me posting this @exxos :hide:
US Atari 520 STFM (C070523-001 REV.D1) , Exxos PSU, 4MB Marpet Upgrade, Exxos 6 Chip TOS 1.04 USA, EmuTOS 20211020, Ultrasatan, PP Driver, Original Floppy Disk Drive, NEC Multisync EA193Mi Monitor, Star LC-10c Printer, iMP C100110-001 DMA.
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Re: 1040STE don't like floppy drive

Post by doc »

Thanks Exxos. i can give a last try as the DMA is not the more expensive compared to the WD1772. and if I’m a bit lucky I won’t have to change other neighbourhood circuits. In your opinion is the -20 fully compatible with the -38 DMA ?
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exxos
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Re: 1040STE don't like floppy drive

Post by exxos »

I've never heard of a -20 DMA until now...
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.
doc
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Re: 1040STE don't like floppy drive

Post by doc »

Like the one on the ebay url you post me : C025913-20
https://www.ebay.co.uk/itm/Atari-520-ST ... 4057308952
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Cosmic Puppet
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Re: 1040STE don't like floppy drive

Post by Cosmic Puppet »

doc wrote: Mon Sep 21, 2020 9:05 am Like the one on the ebay url you post me : C025913-20
https://www.ebay.co.uk/itm/Atari-520-ST ... 4057308952
Hi @doc If you email the seller he'll probably know the answer. Really helpful guy. He talked me through an upgrade I was struggling with last year.
US Atari 520 STFM (C070523-001 REV.D1) , Exxos PSU, 4MB Marpet Upgrade, Exxos 6 Chip TOS 1.04 USA, EmuTOS 20211020, Ultrasatan, PP Driver, Original Floppy Disk Drive, NEC Multisync EA193Mi Monitor, Star LC-10c Printer, iMP C100110-001 DMA.
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JezC
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Re: 1040STE don't like floppy drive

Post by JezC »

I think that seller also has/had a few IMP DMA chips available .. which might be better than the link (which claims to be for an STM only?)

:shrug:
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