| Click here to select a new forum. |
| Mystery Slot In Quadra 605 |
Posted by: Megaboz on 2022-07-11 10:01:59
Hi, all,
I picked up a Quadra 605 recently, and noticed an empty extra slot on the motherboard I don't recognize (see attached photo). It's in-between the VRAM and RAM, but doesn't appear to fit either type. I have a copy of the repair guide, along with reference photos of other 605s, and none include this extra slot. Anyone have any idea what this is supposed to be used for?
Thanks,
M |
Posted by: cheesestraws on 2022-07-11 10:21:10
ROM SIMM? |
Posted by: ArmorAlley on 2022-07-11 10:26:15
The name of the thing is often silk-screen'd onto the motherboard.
Is there anything nearby on yours?
The Quadra 605 is the same motherboard as the LC475 (but with a different Gestalt-ID) and it has a ROM SIMM there. |
Posted by: Megaboz on 2022-07-11 10:51:24
Ah, a ROM SIMM would make sense -- thanks! |
Posted by: MrFahrenheit on 2022-07-11 14:24:33
ROM SIMM?
Yes! Early Q605/LC475 boards had a ROM SIMM slot. |
Posted by: trag on 2022-07-14 20:16:03
If it's 64 pins, then certainly a position for a ROM SIMM. |
Posted by: retr01 on 2022-10-01 17:48:16
While early Q605, LC475, and P475/P476 boards had a ROM SIMM, what do the later revision version boards look like for the ROM? Are they soldered on the board? Can we compare it with pictures? |
Posted by: Phipli on 2022-10-01 18:18:12
While early Q605, LC475, and P475/P476 boards had a ROM SIMM, what do the later revision version boards look like for the ROM? Are they soldered on the board? Can we compare it with pictures? They all have the same soldered ROM, only Apple tends to include an additional ROM SIMM slot, "just in case" they needed to issue a ROM update, on early machines of a type. |
Posted by: retr01 on 2022-10-01 18:38:59
Hmmm. And the later version boards lacked that 64-pin SIMM socket.
Okay. Has there been any talk about looking into this further? |
| 1 |