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| EPROM Copy of Macintosh 512K ROMS 64KB |
Posted by: Mikemike690 on 2016-02-07 22:18:55
Does anyone on here have EPROM copies of Macintosh 512K 64KB ROMs? Thanks.
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Posted by: 360alaska on 2016-02-07 23:29:28
You can always buy this guy:http://www.bigmessowires.com/mac-rom-inator/
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Posted by: Mikemike690 on 2016-02-08 00:55:49
Wow thank you!
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Posted by: techknight on 2016-02-08 15:37:23
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.
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Posted by: Elfen on 2016-02-08 17:33:38
That would be a kick-ass +Plus!
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Posted by: Mikemike690 on 2016-02-08 17:48:18
So you mean like a modern SuperDrive as in DVD/CD drive?!
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Posted by: Elfen on 2016-02-08 18:00:19
1.44 HD Floppy Drives.
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Posted by: Mikemike690 on 2016-02-08 18:04:40
Don't mind my idiocy
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Posted by: Paralel on 2016-02-08 18:39:15
Yeah, the 1.44 HD Floppy Drives were the very first "SuperDrive" from Apple in the Mac line.
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Posted by: trag on 2016-02-08 19:14:37
Don't mind my idiocy Not your fault that Apple reuses the same only tired marketing terms for different products.
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Posted by: bigmessowires on 2016-02-09 10:38:27
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. 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.
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Posted by: trag on 2016-02-09 11:29:17
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.
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Posted by: Elfen on 2016-02-10 07:55:48
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?
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Posted by: CC_333 on 2016-02-10 16:23:43
No, the SWIM is capable of working with 400k drives in addition to 800k/1.44MB.
And the ability to work with MFS is somewhat dependent on the SSW (SSW 6 or earlier is best for MFS compatibility).
c
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Posted by: techknight on 2016-02-10 19:10:13
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. 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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