Macintosh Hard Disk 20

[uniserver]

techknight hooked me up.

would you belive a rat naw'd a hole in the box, and chewed the cord all to hell?

well its true …

anyways i patched it up, and sure enough it still works.

figured i would be funny and try it on my classic II

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would of tried it on the 512k, but after the latest firmware update my floppy emu doesn't work with the 128k / 512k

needed the floppy emu for the HD20 boot disk.

The 5126 portable boots up from the HD20 just fine.

 

[CC_333]

I have one of these as well. It was part of a gift from a friend's friend (it came with a Plus), so I was very glad indeed .

As a bonus, it works perfectly. And the sounds they make are just the neatest, aren't they? A little yellow, but I don't care (might retrobright it sometime, but it blends in okay since it's beige).

Good find!

c

 

[onlyonemac]

would of tried it on the 512k, but after the latest firmware update my floppy emu doesn't work with the 128k / 512k needed the floppy emu for the HD20 boot disk.

Is that expected? I thought it was supposed to work with almost all Macs now? I didn't know BMOW had dropped support for the earlier machines with the latest firmware update. Perhaps you should let him know that you would prefer it if he supported both? And in any case, can't you downgrade it again?

 

[CC_333]

It sounds like more of a bug to me. Why would he drop the 512k when he only just now got it working?

Nonetheless, perhaps downgrading to a known good firmware version and getting in touch with BMOW would be a good idea.

c

 

[bigmessowires]

The latest Floppy Emu firmware (1.0L F11) still works on the 128K and 512K - the only change in this version was for LCD contrast adjustment.

That's cool that the Classic II even booted with the HD20. I thought it didn't support it, but I guess it does!

 

[uniserver]

ok then maybe my floppy emu has issues then.

yeah it does work with the Classic II… maybe i should try the IIsi as well?

and all the macII line ….

 

[techknight]

Told ya the drive worked ;-)

I got it at the Dayton Hamvention, used it once or twice on my SE to try it out. And it sat.

it also has some type of MIDI player program on there as well.

 

[uniserver]

lol i wonder if with a dougg3 rom simm i could add in the HD20 support??????????

then when BMOW gets around to doing the HD20 emu … we could use it with more machines.

 

[Macdrone]

A rom SIMM for the HD20? Do you mean for the 128 and 512?

 

[CC_333]

Apparently, if I read the Wikipedia article correctly, Apple deprecated support for the HD20 in all Macs after the Plus and 512ke (which were the first, and apparently only, Macs to have "official" support), but the ROM drivers were still there on any Mac made since with an external floppy port (SE, SE/30, Performa 200/Classic I/II, and Portable), hence this is why it still works on a Classic II or Portable.

c

 

[Macdrone]

That's why I don't understand his statement. you need to boot from a floppy on a 512 to be able to use the HD20 and the 128 cant use it, so what would a rom do and for what machine? You need to upgrade the 128 to 512 to use it as far as I know, and If the 512 only needs a KE rom why would we need a dougg3 rom simm?

 

[uniserver]

The following Macintosh models have support for the serial (non-SCSI) HD-20 built into ROM

* Macintosh 512Ke

* Macintosh Plus

* Macintosh SE

* Macintosh Classic

* Macintosh Classic II

* Macintosh IIci

* Macintosh Portable

The following Macintosh models do NOT have this support built in:

* Macintosh SE/30

* Macintosh II

* Macintosh IIx

* Macintosh IIcx

* Macintosh IIsi

* Macintosh IIfx

(however maybe support could be added with one of dougg3 roms?)

from this website:

http://www.mac512.com/macwebpages/hd20.htm

 

[Macdrone]

Have you tried the ones that don't say they are supported? I think I have one under my 30. I'll check. Weird that one version of the II works but the rest don't.

 

[Macdrone]

Well just to make sure I tried my non scsi version on my II and SE/30 and it didn't work, although I did not try the init. If it allows the 512 to use it I could see if that does the trick. I guess that would be the rom would require to work. Weird they took that out. Maybe the rom was too full?

 

[olePigeon]

Could you add support for it via Dougg3's ROM?

 

[uniserver]

Bbran has to give the thumbs up, if he wants to throw it in and send me the bin I could find out tonight for everyone

 

[ScutBoy]

Well just to make sure I tried my non scsi version on my II and SE/30 and it didn't work, although I did not try the init. If it allows the 512 to use it I could see if that does the trick. I guess that would be the rom would require to work. Weird they took that out. Maybe the rom was too full?

Probably figured SCSI was here to stay and much faster, so why continue support for a slow serial connected device?

Or there was no space in ROM - either reason makes sense

 

[uniserver]

- yeah i am sure some will argue the point that its slow and pointless.

but from my experience with Mac OS6 on the HD20, I find it to be fast…

just as fast as your scsi 40/80meggers.

also, where i am going with all of this is…. If we can get HD20 support in the ROM simm….

and if BMOW can figure out how to mount up an boot a Image with the floppy emu, that means you can have one device…

( floppy emu ) with Dougg's ROM simm, That can pretty much do it all.

i mean even the HD20init is on the floppy emu, maybe he can config it so that init hits.. and the HD20 takes over on the same device with the 128k 512k!

I would love to boot a 100-1000meg image from the floppy emu

and be able to run all these machines with it…

it would be extremely convenient!

* Macintosh 128k - init from floopy emu

* Macintosh 512k - init from floopy emu

* Macintosh 512Ke

* Macintosh Plus

* Macintosh SE Dual 800k

* Macintosh SE-FDHD ?

* Macintosh Classic

* Macintosh Classic II

* Macintosh IIci

* Macintosh Portable

* Macintosh SE/30

* Macintosh II

* Macintosh IIx

* Macintosh IIcx

* Macintosh IIsi

* Macintosh IIfx

 

[Blinkenlightz]

In a way I'm surprised that Apple dropped hardware support for the HD20 so quickly...

Clearly, they never would have sold an HD20 to a customer who intended to use it primarily on a IIsi for example. But what about existing customers moving to new machines? If you had a 512, for instance, with an HD20, then upgraded the 512 to a Plus, upgraded the Plus to 4MB, you would still have had a viable computer when the IIsi came about. Why would Apple not want to make it easy for such a customer to move their data and applications to their shiny new Mac? Just thinking out loud... I guess it points to a ROM size constraint or similar. I can't imagine a commercial reason for the decision to cut out support.