Amiga 1200 Project

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Amiga 1200 Project

Postby Roux on Thu Oct 29, 2015 9:40 am

Hi,

I thought I would share a quick project with an Amiga 1200 that I picked up

I recently discovered an Amiga 1200 for sale, it didn't come with a mouse or joystick but it was was being advertised with an external HDD. It was also noted that this Amiga had been used to run small animation files. I couldn't work out if the HDD was a branded proper external one like GVP, or a 3.5" running through a SCSI controller like a SCSI Squirrel, I was also thinking that maybe it might have some extra ram for the animation files - I decided not to ask so that it could be a surprise :)

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It arrived well packaged, it was a little dusty as to be expected but looked in pretty good shape overall. The HDD turned out to be a 3.5" Seagate in a well padded box connected to the IDE port via a custom cable. I was slightly disappointed that it wasn't something cooler but oh well! The bottom trap door was bulging slightly so I guessed there must be some ram added, I was very keen to open the case now!

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The power supply was a little yellow, but measured nicely on my multi meter

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I opened the case and was treated to a very nice surprise!!

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A DKB Cobra 030 Accelerator @ 40MHz with the optional 68882 @ 33 MHz added and 8MB of Ram :D :D

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Rom is version 3.0

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It is a Rev 1D4 Board (The last A1200 board that Commodore made before they went belly up)

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The ports are VERY clean and there is no sign of any rust

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Case is in nice shape - a little dirty but otherwise good

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The first thing on my list is a thorough cleaning, then I will replace the electrolytic capacitors as they are the original (very cheap) ones. I am hunting eBay now for a 128MB card for the Cobra and will look to replace the HDD with a CF

I will update this post soon as the project progresses
Roux
 
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Re: Amiga 1200 Project

Postby Roux on Thu Aug 25, 2016 12:01 pm

Wow! Forgot to update this :oops:

The machine was fully working with CF card and WHD load. I played around with this for a while but there was glitching issues with sound and video. The machine was then stripped and recapped , the accelerator card sold while board was away being repaired.

This 1200 is still in use today with a Phase 5 Blizzard 1260 and SCSI IV installed inside. Still using the CF Card with WB3.1 but would like to try 3.9
Roux
 
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Re: Amiga 1200 Project

Postby Roux on Thu Aug 25, 2016 5:17 pm

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After a good cleaning

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Inside the A1200

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Tidied up the hack into the case for the old HDD cable.

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The heart of the A1200

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SCSI IV Module

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WHD Load works without a hitch

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Next step OS 3.9
Roux
 
Posts: 46
Joined: Mon Mar 23, 2015 12:25 pm

Re: Amiga 1200 Project

Postby tezza on Thu Sep 08, 2016 4:17 pm

Nice pictures Roux.
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Re: Amiga 1200 Project

Postby mons2b on Tue Sep 20, 2016 8:31 pm

Did you have to pay big dollars to buy that? They are almost as pricy as an Atari Falcon.
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Re: Amiga 1200 Project

Postby Roux on Thu Sep 22, 2016 1:35 pm

tezza wrote:Nice pictures Roux.


Thanks Tezza. More to come soon
Roux
 
Posts: 46
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Re: Amiga 1200 Project

Postby Roux on Thu Sep 22, 2016 1:37 pm

mons2b wrote:Did you have to pay big dollars to buy that? They are almost as pricy as an Atari Falcon.


Not too big :) I have been piecing this beast together slowly. I have managed to do part labour and trade deals for a lot of my Amiga stuff. I can't afford the price tags on the open market :?
Roux
 
Posts: 46
Joined: Mon Mar 23, 2015 12:25 pm


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