DuoDockDeclROMmayhem!

[Trash80toHP_Mini]

Well, I've finally got the right-sized piccies for the different DeclROMs in question:

Duo MiniDock: socketed 32 pin PLCC DeclROM





DuoDock: SMT 32 pin _________ DeclRom



DuoDock II: ZIF Socketed 32 pin _________ DeclRom:

w/retaining frame in place:



w/o retaining frame in place showing Pads & Legs of 32 Pin _____________ DeclROM:



32 Pin PLCC Prototyping Socket:



It's just a matter of designing a circuit board, or even a wiring harness, that'll connect to either the DuoDock on one side or the DuoDock II on another. It will need a switching setup to control the Chip Select lines of whichever DeclROMs are being tested, which is a far more elegant approach than the PowerPinJumperHack seen in the DuoDock DeclROM piccie.

32 Pins in each case pretty much translates into each of the 3 ROM ICs having the same storage capacity, despite the disparate IC Packages & mounting technologies.

I'm tired! Time to log out for now!

 

[Trash80toHP_Mini]

OOPSIE! Forgot to mention the purpose of these shots. Most of the MLA must be scratching their heads and muttering What the . . . :?:

In some other threads a few of us were discussing the possibility of using the Duo MiniDock ROM in the DuoDock for achieving full Dock services WITH the LCD enabled.

To get the Duo's LCD to work while in the DuoDock it's necessary to do something nasty like the PowerPinJumperHack™ or better yet, desolder the Chip Enable Line's leg from its pad and then wire pad and leg to a switch.

With the DeclROM powered down or unselectable, the Dock still provides NuBus support, but most of the other Dock Services remain dormant. If the MiniDock's PLCC Packaged DeclROM can be adapted to the DuoDock's DeclROM IC Package Type with a two-way switch installed to the two ChipSelectHacked™ ICs, either of the DeclRoms can be tested and . . .

. . . we MAY be able to achieve full dock services, including NuBus and utilize the extra VRAM in the DuoDock to add more resolutions/color depth than the Duo MiniDock provides.

. . . or not! }

 

[Bunsen]

Ah jt, good to see you getting back to your old mischief :b&w: I'll be watching with interest, but you knew that

 

[Trash80toHP_Mini]

Ah jt, good to see you getting back to your old mischief :b&w: I'll be watching with interest, but you knew that

HeHeHeHe!!!!!!!!!!!!!!! :lol: COWABUNGA, DUDE! [)] ]'>

Wouldn't be surprised if half the comrades don't get it and the other half prolly' don't give a rodent's rear about this kind of idiocy. Glad to have some support from the gang, comrade!

When you guys were "paging me" . . . I figured a few troopers were interested in this GuerillaHackin' kinda stuff! :rambo:

 

[MacJunky]

Wouldn't be surprised if half the comrades don't get it and the other half prolly' don't give a rodent's rear about this kind of idiocy. Glad to have some support from the gang, comrade

I personally only care up to the point that it helps keep the community active and it is nice to see people doing this sort of thing. But aside from that it is hard to get involved since I do not have or have access to any duo hardware. If I did have a duo+dock I would be much more interested in getting involved.Either way, it is good that someone is doing it.

 

[Trash80toHP_Mini]

I personally only care up to the point that it helps keep the community active and it is nice to see people doing this sort of thing. But aside from that it is hard to get involved since I do not have or have access to any duo hardware. If I did have a duo+dock I would be much more interested in getting involved.Either way, it is good that someone is doing it.

You might want to bid on some Duo stuff now and then, they're great fun to begin with, but I think we're going to be doing something very interesting w/my favorite PB-Toys someday! [] ]'>

 

[H3NRY]

I'm late to this party. So the object is to run both the Duo's LCD and an external monitor plugged into the dock? I thought the dock & mini-dock had their own video chip & RAM to drive external monitor, so the improved color depth would only apply to the external monitor, not the Duo's LCD, right? I have to admit it never occurred to me to run the dock without its lid and with the Duo open. :scrambled:

I wonder if you can still buy EPROMs that fit in that ZIF socket and program one with the mini-dock ROM code.

 

[Trash80toHP_Mini]

I'm late to this party. So the object is to run both the Duo's LCD and an external monitor plugged into the dock?

Correct! :beige: ATM my DuoDock testbed (the one with the inelegant PowerPinJumperHack™) is running off the LCD and a Radius NuBus Card along with the PAS 16 Sound Card. When the DuoDock or DDII is missing its ROM, the NuBus ChipSet keeps on truckin! [] ]'> But the onboard video and most other Dock services except ADB, NuBus and somethingorother that I can't recall ATM, are disabled.

I thought the dock & mini-dock had their own video chip & RAM to drive external monitor, so the improved color depth would only apply to the external monitor, not the Duo's LCD, right?

Correct again, but having any Video Out from the DD/DDII LoBos would be a huge improvement over none at all, even at the MiniDock's color depth/resolution limitations, but I'm operating under a WAG that the DD/MiniDock and all the "Second Source" MiniDock's DeclROMs are almost identical. If so, the MiniDock DeclROM may restore full DuoDock Services and possibly even provide support for the announced, but never delivered, (imagine that : ) PC-Card MiniDock under this theoretical "UNIVERSAL" MiniDock DeclROM Spec. Another possibility would be that like the NuBus ChipSet, T-REX might not need DeclROM "support" at all, there is plenty of space in said ASIC for any necessary setup code!

If not, I've got the necessary, openly published, Developer Documentation to make changes to any of the various DeclROMs in hand a/o on disk!

The name of the mfr. escapes me ATM, but they produced all Mini/MicroDocks sporting the Apple logo, as well as a line of their own. The empty space under the UltraDock LoBo, hacked to contain the Duo's power adapter by the keeper of the "House of Duo" web page, leads me to believe that the 1400's PC-Slot DaughterCard, with the T-REX ASIC on the bottom, was meant to be housed in that very same space! [] ]'>

I have to admit it never occurred to me to run the dock without its lid and with the Duo open. :scrambled:

Never occurred to me either! I saw it mentioned in a post that the LCD worked with the lid off and the "ROM" disabled so I made a WAG, researched what turned out to be the well documented Declaration ROM, AKA DeclROM, spec and committed the FUGLY PowerPinJumperHack™ on my unsuspecting DuoDock. This research was done for the, unrealized, DuoBoomBoxDock™ Hack. I needed to determine whether the MiniDock LoBo might support the NuBus ChipSet, enabling me to do an adaptation of the IIsi's NuBus adapter. This in turn, would provide support for the PAS 16 required to get Stereo Sound out of a Duo.

I wonder if you can still buy EPROMs that fit in that ZIF socket and program one with the mini-dock ROM code.

NoPro, ANY ROM, EPROM, or even a combination of smaller, Neolithic PROMs will do! For the moment, I'm noodling out the adapter card necessary to replace the DD's DeclROM package on one side and the DDII's DeclROM package on the other, with the wiire-wrap prototyping socket pictured above mounted in between. [] ]'>

Next step: peelin' stickers to get the specs on the ROMs in the piccies above! }

BTW: "WAG" = Wild @$$ Guess in engineering parlance!

 

[Bunsen]

Just for fun, I dug up this from the deeper dungeons of Applefritter:

Re: Duo Hack To Come.. What to do...« Reply #3 on: Feb 24th, 2003, 8:02pm »

Please, someone, please tell me, is there ANY way. ANY WAY whatsoever to get the LCD to work when connected to a Dock?

If it's a Dock I, you need to desolder the powerpin on the ROM and the LCD will automagically begin to function, but doing so will bork all your Dock services except NuBus and the hardwired Docking Connector services like ADB, Sound and Modem passthru, IIRC. I posted the pin number somewhere in the forums, it's on the right side of the notch, mine's got header/jumper cutout wired to it now so I can run it either way at whim. Wink

In the DevNotes, you can look up the "Docking Bar" etc. bits that'd need to be hacked in the ROM to disable just the Dock Video to enable LCD support with Dock services intact. See my DeclROM Hack thread for details on the sResource example.

jt

edit: I ran some of the threads down for you, sometimes it's hard to find even when you POSTED what you're searching for! :

LCD Enabling

DBBDock Update II

DeclRom Hacking

Here's the Duo/Dock case hack project I'm currently evaluating:

Duo/Dock/Portable Hack

And one more:

2300c->G3, MISSION IMPOSSIBLE! (or improbable)

 

[Trash80toHP_Mini]

* thinks of the list of Procrastinations-in-Progress™ . . . :I *
* leaves quietly *

* EEEEEEK!!!!!!!!!!!!!!!!!!!! [:I] ]'> *

* leaves quietly *

 

[Dandu]

Hi. This topic is old, but do you have a dump from the Duo Dock II ROM ? I try to extract the Easter Egg and my dump is not good.