Jump to content
Have You Played Atari Today?
2600|5200|7800|Lynx|Jaguar|Forums|Store  

3atariSTE

Members
 View Profile  See their activity

  • Content Count

    18

  • Joined

  • Last visited

Posts posted by 3atariSTE

  1. Posted · Edited by 3atariSTE

    I will ask the question here since this is the most recent active Indus GT thread.. I have 2 drives.. 1 is 1.2 rom and the other is 1.1 .. I have one drive working fine.. the other will not read.. everything "works" it just wont read.

     

    Anyone reading this good at troubleshooting Indus drives? I have swapped systematically just about every component from the working drive to the non-working drive.. and I have not been able to get it up and running. I am open to ideas.

     

    James

     

    Have you swapped the mechanical?

     

    I had a problem in my IndusGT...the drive did not read.

    In other hands the head not moving. Step motor defective? NO...the problem was the chip U6 (UDN2541B) fault.

    I have replaced it with SN75437 and now, the drive is working perfect. :-)

     

     

     

  2. Posted

    Way to tell rom version is to look at the last 4 bytes right after 'KSB.' of the rom image. (note period = 2E)

    In lowbyte high byte format is version number eg 20 01 = 1.2 10 01 = 1.1.

    The last 2 bytes is supposed to be checksum excluding those 2 bytes (at least i believe that is the case).

    There is another location where version number is kept. In V 1.2 rom, it is at CF5 again in low/high format. V1.1 will be in a different location.

     

    Edit. Just checked V1.1 rom. 2nd Ver num location is in same place at CF5.....

     

    James

    Thanks for the info James.

    These technical knowledge should be useful to tjlaser for burning my eproms. :-)

     

    Maurizio

     

  7. Posted

    This is my version 1.2 i got from original rom.

    attachicon.gifindusgt12.rom

     

    James

     

    Hi Larry,

    i have two IndusGT for Atari full working.

    The first have the firmware ver 1.2, the other ver.1.1 (I read that it is not perfect)

    So I'm looking for a EPROM programmed with ver.1.2....do you have a eprom burning?

    If yes, please let me know.

     

    Also I contacted Best Electronics for the 1.4 version, but i've a question:

    Is the ver.1.4 the last/stable firmware for the IndusGT?

     

    That's all

     

    Thx in advance

     

  9. Posted

    Hello all

    As the object i'm looking for IndusGT firmware version 1.2.

    Best Electronics have the ver 1.4..but reading in the forum it seems not be the last or stable version (or i'm wrong?).

     

    Can anyone help me?

    If anyone have the ver 1.2 (full working) please let me know the cost.

     

    Thanks in advance

    Maurizio

  10. Posted

    hi ppl

    I'm out of time since last post :-) but the GS error on Indus seems to be a common problem.

     

    Have you check if the head moves?

    If it does not move means the step-motor is not working. :-)

    In this case, the problem may be the UDN2541B (Quad NAND-GATE Power Drivers).

    If the I.C. is ok than may be the step-motor (replace the mechanics).

    Maurizio

  12. Posted

    Hello ppl

    I'm repairing my Indus...the step-motor is dead (caused by the failure of U6 - UDN2541B).

    Of course I have ordered the parts (5x SN75437A). :-)

    But my question is another:

    I am seeing the mainboard and I saw an IC with the sign canceled

    The IC is U22 (CD74HC???)..

    Anyone knows the exact sign?

     

    Thanks for any help

    Maurizio

    post-22863-0-72240200-1483127491_thumb.jpg

  15. Posted

    Please, give me a suggestion.

     

    Maurizio

     

    Try inserting just the pcb into the slot without the shell. you may not be getting full contact. Chip side down.

    Only other thing might be poor receiver slot, or chips.

     

    Ok done...but the cart not works.

    I got several cartridges ALL woking.

     

    I think the problem are the chips, CO60340A-29 / CO17340A-01.

    Anybody know if i can found this replacements?

     

    thx

    Maurizio

  17. Posted

    Those edge connector contacts don't look so great.

     

    Try a cloth + isopropyl alcohol (aka video head cleaner).

     

    Supposedly, pencil erasers are also good for cleaning them.

     

    I have tried with isopropyl alchol and head cleaner, but nothing...its not works!

    I will try to rebuild the contacts using varnish of silver...i hope to be luck. :)

     

     

    thx

    Maurizio

  18. Posted

    Hello folks

    I am new in this forum, my name is Maurizio and live in Sardinia (Italy).

    Well, just a question about the object.

     

    I got an old cart (Donkey Kong Jr.) but its never worked.

    When I insert the cart on my 130XE, its goes in "self test" screen.

    I check the cart pcb, all wires seems ok (i used a dgt tester).

     

    What's the problem?

    Bad chips?

     

    Thx in advance

    Maurizio

    post-22863-1237109215_thumb.jpg

    post-22863-1237109232_thumb.jpg

    post-22863-1237109252_thumb.jpg

AtariAge
Forums
Store
General
Follow AtariAge

Copyright ©1998-2021 AtariAge

×
×
  • Create New...