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Subject: Re: 2nd ATA Device on JB20 Recorder
From: roland (for_spam_at_gmx.de)
Date: 2003-01-22


Hey, nobody out there who could give a guess regarding
possible chances for success of this plan ?
regards
Roland

  ----- Original Message -----
  From: roland
  To: rockbox_at_cool.haxx.se
  Sent: Saturday, January 18, 2003 6:59 PM
  Subject: 2nd ATA Device on JB20 Recorder

  Hi !
  Does anybody think, this (still fictional) hardware-mod is worth a try ? (also see attached pic)

  I`d like to use my Jukebox as a backup device for compact flash cards (digicam).
  Since CF cards are true IDE/ATA devices, perhaps this works. I already have some experience
  with passive CF2IDE adapters. (booting Linux from that)

  I`m also not shure, if could "see" 2nd. device from within rockbox without too much effort.
  If there is a chance, that a master/save combination can be handled with existing
  archos hardware, perhaps I will disassmble my JB and look onto PCD how HDD is being interfaced.

  Yes - we need to add code there - but maybe this is not too difficult.
  CF usually are formatted witch fat12 or fat16 - can existing fat32 driver code handle that, or do I
  need addidtional driver code?
  I read the isd300 manuals and I`m quite optimistic, at least ISD300 can handle 2 devices
  -----snipp---
  Master/Slave Selection
  Bit (5)
  Device number selection. This bit is valid only when "Skip ATA/ATAPI
  Device Initialization" is active. Under ISD-300A control ("Skip
  ATA/ATAPI Device Initialization = '0'), the value is ignored.
  0 Drive 0 (master)
  1 Drive 1 (slave)
  ---snipp----
  But as i see - ISD300 is ONLY needed when interacing to usb!? So we don`t really need support for 2nd
  device of ISD300 - since what we get would be just "another" USB CF Card reader - and they are cheap today
  - anyway ;)

  Please tell me, what you think regarding chances for success on that.
  regards
  Roland

  PS:
  Shure , that "hack" won`t fit into the original JB case - but I will build a new case around my JB soon, anyway.



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