• Updated 2023-07-12: Hello, Guest! Welcome back, and be sure to check out this follow-up post about our outage a week or so ago.

Finally after 7 years I have an Original Macintosh, mostly:)

uniserver

Well-known member
This whole project started about a year ago.

I bought this Plus on ebay. Realized it was an upgraded original 128k.

So my quest has been to down grade it.

I needed an original Macintosh Main-board,

I needed a Original MACINTOSH boot(rear).

I needed a 400k floppy drive

The Main board:

Last year Mcdermd told me that he had a original 128k board laying around. But he cautioned me, it had been upgraded to a 512k, and the rom's were missing.

So he installed the original amount of ram, and flashed me up some Rom's,

Also he found me a boot, but its missing the rear decals, that is ok ill take it.

Anyways he sent those to me.

So I have this thing all together.

let me say, I thought the 800k floppy drive was going to work. Nope. It doesn't.

Good news is though, I was lucky enough to win a 400k external a few months back.

So booting from the external 400k, it came right to the desktop.

Finally!

IMG_0290_thumb.jpg

I still need to acquire a 400k drive.

I still need to acquire a proper 512k/128k tin for the mainboard

I still need to acquire a Macintosh badge with Info sticker as well.

Other then that this thing is rockin!

Solid A/B

Clean CRT, NIce and bright.

It's taken a few bucks and alot of watin.

Here are some other pics.

IMG_0284.jpg

IMG_0286_thumb.jpg

IMG_0287_thumb.jpg

IMG_0289_thumb.jpg

 

TheMacGuy

Well-known member
Nice! If I ever get my 128k board working, this is what I would be shooting for. Good to see it has been done before.

If you can find another external 400k drive, you should be able to dismantle it for the FDD and stick that in your 128k. That's what I did with the 512kE (then again, I'm talking about 800k drives).

 

uniserver

Well-known member
ok mcdermd just mentioned the Floppy cables can be different form 400k to 800k

maybe that is my issue why the 800k floppy drive is not working with the 128k rom's

( it works fine when i pop plus roms on there ) :) but who needs a 128ke? lol

Wow ok, macdrone maybe we can do some more horse trading… :)

 

uniserver

Well-known member
ok having internal floppy drive issues.

I changed the filter. I installed a 400k floppy

I tried different rom's (plus ones).

I am definitely having floppy drive issues.

one funny thing... the external always works fine. no matter what i can always boot from the external.

so my guess is IWM, or some resistor or cap or diode is screwing with me here.

when i first hooked up the 400k drive to the internal port flipped it on.. it booted ... tried it again and no dice.

the funny thing with the external port i tried 400k / 800k / even super drive external and it still boots 400k disk with out issue to the desktop.

On a rare occurrence it seems internal drive will maybe boot once.. but mainly it makes some funny groaning jittery type noise and just spits the disk out...

same with the 400k / 800k drive.

i suppose i can just always use the external drive... its just that is slightly annoying to me.

 

Macdrone

Well-known member
I'm thinking whatever is killing our boot for me and the other person is the same reason your having floppy issues. Unless your using the wrong cable. I forgot which color stripe for which drive at the moment but it makes a difference.

 

mcdermd

Well-known member
I put it out here that it was working fine in a 400K drive chassis after I had finished work on it. FWIW, I would still be looking at your floppy hardware.

 

uniserver

Well-known member
lol yes i know it was working fine before you sent it out.

However, Now its only working fine through the external floppy port.

Please don't feel responsible.

This is old as hell. - you are the man. / It turned out fantastic

I am just trying to get to the bottom of it.

its really kind of a stupid little issue that is getting on my nerves

Otherwise it works 100%

I'v tried 3 different cables.

3 different tested working floppy drives. 400/800/Superdrive

I install'd the plus board back into it… and yes the internal floppy works.

I'm done with it for now, I have no more time allocated for this.

Last night I was suppost to:

Re-cap 2 LC PSU's

Partition/format/install mac os on 5 hard drives, and mount them in 5 machines.

Fix habib's gameboy color.

Prepare a cap kit

All i really ended up doing last night is burning a butt load of time on this 128k for pretty much no result.

Time lost + no positive result really urks me these days… maybe its a sign of my old age. ?>

 
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mcdermd

Well-known member
Oh, man. You caught me OnlyOneMac. I'm a bad boy. I'm filled with guilt about replacing broken parts with less-expensive counterparts.

 
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cb88

Well-known member
Your splitting hairs... its the rom the board would have came with originally. If anything its more legal that it was :p

 

Macdrone

Well-known member
I can't imagine repairing a 29 year old Macintosh 128 by making new roms would bother anyone at Apple since the hardware is no longer supported and the software to run on it is free if you can find it on Apples web site. Considering the last rom flashing post was for the prototype twiggy Mac, and an Ex Apple engineer helped with that I just see it as a mute point.

I know your right but I think even Steve Jobs would be going "Hell Ya!"

I mean he kept his Apple II for the rest of his life.

 

mcdermd

Well-known member
Jobs? Jobs didn't really have any affinity for old things. His attitude was that they were junk compared to the new stuff so why would you want to keep it? One of the first things he did upon returning to Apple was to donate the Apple museum pieces to Stanford.

 

Macdrone

Well-known member
Ya but he donated them, he did not throw them away. Why so many prototypes around? Maybe he thought they were cool also? Why make them clear? Because he liked them and they were awesome!

 

mcdermd

Well-known member
The first clear prototypes I know of were for the SE. As I understand, it was clear to check air flow through the case. Jobs was long gone by the time the SE was out. It also had things Jobs hated: a fan and cursor keys.

 
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