Does anyone on here have EPROM copies of Macintosh 512K 64KB ROMs? Thanks.
EPROM Copy of Macintosh 512K ROMS 64KB
- Thread starter Mikemike690
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Wow thank you!
Sadly ill never have time, but I wanted to hack a Plus to run a Superdrive FDHD. Patching the .Sony driver from an SE into the Plus ROMs, and swapping the IWM.
So you mean like a modern SuperDrive as in DVD/CD drive?!
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Don't mind my idiocy
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Not your fault that Apple reuses the same only tired marketing terms for different products.
That's a really interesting idea. Do you know offhand if the SWIM is pin-compatible with the IWM? I think it's not, so some kind of adapter board would be needed.
It's a socketed replacement in the SE and Mac II. i.e., they sold 800K floppy equipped IIs and SEs which were later upgradeable to 1.44 floppy operation by swapping the IWM for a SWIM and changing the ROM chips.
That suggests that the two are pin compatible, unless the SWIM has more pins and the two Macs were built with a longer socket with upgrades in mind, but that seems unlikely.
That suggests that the two are pin compatible, unless the SWIM has more pins and the two Macs were built with a longer socket with upgrades in mind, but that seems unlikely.
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As I remember, the SIWM and IWM chips are same size and same pin outs. They should fit the Plus without problems or modifications. It is the ROMs that determine how to read a disk from the S\IWM.
The question is - do you lose the ability to read 400K MFS disks and are stuck with 800K/1.4M HSF disks?
The question is - do you lose the ability to read 400K MFS disks and are stuck with 800K/1.4M HSF disks?
I cant recall if the Plus and SE are identical, but I think they are. I know SWIM and IWM can be swapped around in the SE. and if I am not mistaking, the SE carried the same chip as the Plus did.
So, in theory, swapping for a SWIM And doing the necessary ROM changes it would work fine.
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