famicomaster2
Experienced Member
Hello all, I come today a bit disappointed because I broke something.
I have a prototype MMI MM 212 hard disk drive with a bad EPROM. Sadly, the upper 4 bits is all trashed and the drive does not operate. On power, the access light turns on solid and nothing else happens.
In my own research, I was not able to find a copy of the binary, and I was not able to find another example of the drive to donate a copy of it's binary.
Recently, I was able to acquire a boxed Macintosh HyperDrive kit, which includes an MMI MM 112 disk drive, which I figured was similar enough to warrant making a copy of it's EPROM.
Sadly, in my attempt to remove the chip, it appears I have damaged it. The drive now behaves exactly the same as the MMI MM 212 with the cooked EPROM. On power, the access light becomes solid and nothing else happens. The drive was 100% working before attempting to remove the EPROM to image it.
As such, my "donor" now no longer works, and I have no way to revive either one of them.
If anyone out there has one of these drives, of model:
MM 106
MM 112
MM 206
MM 212
and would be willing to image the EPROM, even in exchange for money, or who would be willing to sell me a working drive (or control board) to revive either of my units, I would be very grateful.
Linked below is the image of the MM 212's cooked 2732A EPROM, just in case someone more intelligent than I can recover some data from it. The microcontroller used on both drives is a Z8 ROMLESS.
Microcomputer Memories Inc (MMI) MM 212 faulty 2732A EPROM image
I would greatly appreciate any help I can get. Thank you for reading my post either way.
I have a prototype MMI MM 212 hard disk drive with a bad EPROM. Sadly, the upper 4 bits is all trashed and the drive does not operate. On power, the access light turns on solid and nothing else happens.
In my own research, I was not able to find a copy of the binary, and I was not able to find another example of the drive to donate a copy of it's binary.
Recently, I was able to acquire a boxed Macintosh HyperDrive kit, which includes an MMI MM 112 disk drive, which I figured was similar enough to warrant making a copy of it's EPROM.
Sadly, in my attempt to remove the chip, it appears I have damaged it. The drive now behaves exactly the same as the MMI MM 212 with the cooked EPROM. On power, the access light becomes solid and nothing else happens. The drive was 100% working before attempting to remove the EPROM to image it.
As such, my "donor" now no longer works, and I have no way to revive either one of them.
If anyone out there has one of these drives, of model:
MM 106
MM 112
MM 206
MM 212
and would be willing to image the EPROM, even in exchange for money, or who would be willing to sell me a working drive (or control board) to revive either of my units, I would be very grateful.
Linked below is the image of the MM 212's cooked 2732A EPROM, just in case someone more intelligent than I can recover some data from it. The microcontroller used on both drives is a Z8 ROMLESS.
Microcomputer Memories Inc (MMI) MM 212 faulty 2732A EPROM image
I would greatly appreciate any help I can get. Thank you for reading my post either way.
) Conner and maybe some Seagate 3 1/2" drives similar to the first pictured. I could check if they are rebranded. Sometimes it just happens... so let's cross fingers.