Sniffing control flow between legacy devices over PATA/ATAPI

[HaQue]

SD.. Mother taught me if I didn't have anything good to say, don't say anything at all. so.. " ".

did you find a product page for the adapter? I could only find it as part of another kit.

[chrisfoster]

SalvationData Front and Back pics:

https://drive.google.com/file/d/0B2aVIe ... sp=sharing

https://drive.google.com/file/d/0B2aVIe ... sp=sharing

Dimensions: 6.6cm x 4.4cm

[fzabkar]

Wow, that's good support!

As I suspected, the card is preset for ATA mode.

Resistors R60, R61 and R62 configure the PORT00, PORT01 and PORT02 mode pins, respectively.

R61 and R62 are both pulled to ground (low), but R60 is pulled up to the supply (high).

To reconfigure the PCB for ATAPI mode, remove resistor R60 and connect a leaded resistor between TP26 and a nearby ground point. This resistor should have the same resistance as either of R61 or R62 (I can't make out their markings).

BTW, I found this useful tip:

http://lifehacker.com/share-direct-links-to-files-in-google-drive-and-skip-th-1493813665

As tech tips blog Digital Inspiration points out, most of the links Google gives you to share will open a file in the web viewer. While this is nice, you may not want to make the recipient jump through hoops just to download those TPS reports. If you want to share a direct link, simply change the format of the link from this ...

https://drive.google.com/file/d/FILE_ID/edit?usp=sharing

... to this:

https://drive.google.com/uc?export=download&id=FILE_ID

https://drive.google.com/uc?export=download&id=0B2aVIexl9TLZeFNtM19fbklPUjMxV1ltNUl6N2JHT1cxemhr
https://drive.google.com/uc?export=download&id=0B2aVIexl9TLZNEFjNWN5Wlh1cHBUeEF2dGZuZ2t4RTkzRGhB

Attachments

[chrisfoster]

[quote="fzabkar"]Wow, that's good support!

Nice info all round...thanks!

I've forwarded that info and asked if units can be ordered from their supplier pre-configured to ATAPI.

Not holding my breath but you never know.

[chrisfoster]

CPRTools card:

Defaults to ATA mode via Epson R72U1614E2-G10100136

https://drive.google.com/uc?export=down ... FHWVh0b0Y4

https://drive.google.com/uc?export=down ... EzekE2NDhF

[fzabkar]

It appears that the CPR Tools adapter would require a similar PORT00 hack.

Code:

ATA mode                                  ATAPI mode

.-------.         .---.                  .-------.         .---.
|       |   R61   |   |                  |       |   R61   |   |
|       |   ___   |  ===                 |       |   ___   |  ===
| PORT01|--|___|--'  GND         VCC     | PORT01|--|___|--'  GND
|       |                         +      |       |
|       | TP26    ___ R60    ___  |      |       |  TP26   ___ R60x
| PORT00|---o----|___|-------UUU--'      | PORT00|---o----|___|--------.
|       |                  inductor      |       |                     |
|       |   ___                          |       |   ___               |
| PORT02|--|___|--.                      | PORT02|--|___|--.           |
|       |         |                      |       |         |           |
|       |   R62   |                      |       |   R62   |           |
'-------'        ===                     '-------'        ===         ===
                 GND                                      GND         GND


[chrisfoster]

It appears that the CPR Tools adapter would require a similar PORT00 hack.

Does the SalvationData card maybe look easier to operate on? (I would have to outsource any re-work)

Any ideas on how to mount these in place of a zip?

[fzabkar]

I prefer the SalvationData card.

I would affix the card inside a container with screws, spring washers and hex nuts by utilising the screw holes at each end of the 40P connector.

For the container, you might consider gutting a 3.5" floppy drive. You could also remove the DASP Activity LED (IDE pin #39) and reroute it to the floppy drive's LED.

[HaQue]

It appears that the CPR Tools adapter would require a similar PORT00 hack.

Does the SalvationData card maybe look easier to operate on? (I would have to outsource any re-work)

Any ideas on how to mount these in place of a zip?

I can do the re-work for you. If you like I will buy the card and rework it and hand it off to you to test.

BTW @chrisfoster, did you have a copy of the Edirol A-6 OS?

[chrisfoster]

I can do the re-work for you. If you like I will buy the card and rework it and hand it off to you to test

Hey that's very generous of you, how about I hand the SP-808EX over to you and you can experiment on it? That way you could determine if the units a fit for you also..

BTW @chrisfoster, did you have a copy of the Edirol A-6 OS?

No, I don't but I'll have a dig around.

[fzabkar]

@chrisfoster, could you indulge my curiosity and show us what the Zip's file system looks like? If you connect it to a PC, you may be able to view sector 0 with a disc editor such as DMDE.

http://dmde.com/

The Akai MPC2000 uses a quirky implementation of FAT16. I'm wondering if the SP-808 does something similar.

[HaQue]

I can do the re-work for you. If you like I will buy the card and rework it and hand it off to you to test

Hey that's very generous of you, how about I hand the SP-808EX over to you and you can experiment on it? That way you could determine if the units a fit for you also..

BTW @chrisfoster, did you have a copy of the Edirol A-6 OS?

No, I don't but I'll have a dig around.

All Good, I found it.

[chrisfoster]

@chrisfoster, could you indulge my curiosity and show us what the Zip's file system looks like? If you connect it to a PC, you may be able to view sector 0 with a disc editor

Not sure what I'm doing, so if there are some options/utilities I should be running within DMDE?

LBA:0 block: 0
000: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
010: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
020: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
030: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
040: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
050: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
060: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
070: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
080: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
090: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
0a0: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
0b0: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
0c0: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
0d0: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
0e0: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
0f0: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
100: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
110: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
120: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
130: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
140: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
150: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
160: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
170: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
180: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
190: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
1a0: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
1b0: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
1c0: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
1d0: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
1e0: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD
1f0: 42 41 44 20 42 41 44 20 42 41 44 20 42 41 44 20 BAD BAD BAD BAD

[HaQue]

oh, you got the Michael Jackson limited Edition .. nice

[fzabkar]

It doesn't appear that DMDE is suitable for this purpose. Thanks for trying.

Instead I would use HDAT2 (a DOS tool) to dump as much technical info from your Zip drive as you can. This information lists the capabilities and features of your drive and would be available via the Device Info menu. These data can be saved to a file on your source drive (not Zip).

To view the data in a specific sector ...

type MODE CO80,50 at the DOS prompt (80 columns, 50 lines)
launch HDAT2
select your PATAPI Zip drive
select the COMMANDS menu
View/Search Device
screen will show first half of sector 0
PageDown/PageUp to navigate to next/previous sector
Type J to jump to a specific sector

Unfortunately the sector data cannot be saved to a file (at least not on my version of HDAT2).

[fzabkar]

Maybe Snarf can capture the screen data.

http://pixelmetrics.com/Snarf/index.htm

Snarf captures full-screen DOS graphics, even when running under Windows XP. It's a Terminate and Stay Resident (TSR) program that you load before running your application.

[fzabkar]

I've just confirmed that Snarf works under Win98SE DOS (real DOS mode, not a Windows DOS box).

Use Alt-S to dump the screen contents to a BMP file in your HDAT2 directory.

The attachments show the first 0x200 bytes of sector 2048 of my CD-R disc.

Attachments

Snarf001.gif (9.04 KiB) Viewed 10938 times

Snarf000.gif (10.14 KiB) Viewed 10938 times

[HaQue]

Well I got the board, only problem is they sent the wrong board

[chrisfoster]

Well I got the board, only problem is they sent the wrong board

What the.... that is supposed to be the SalvationData card?

[HaQue]

no - I won a mainboard http://www.ebay.com.au/itm/ROLAND-SP-808-MAIN-BOARD-CPU-70909001-IN-OUT-PCB-PANEL-SPARE-PART-REPLACEMENT-/322465463551?hash=item4b14707 but didn't get that in the post!