Here are some pictures of the way I mounted the ACA500+ in the housing of an A1010 diskdrive.








I decided to remove the Terrible Fire from my Amiga 1000 because I couldn't boot it to Workbench 1.3 and use its 4MB RAM. So I moved the ACA500+ that was connected to my A500 to the A1000. I put it in a Amiga 1010 diskdrive housing to get a nice look. I will show you in a later post how I secured the ACA500+ inside.

I made several partitions on a Compact Flash Card. One partition is dedicated to Workbench 1.3 (built in the ACA500+) and another one to Workbench 3.2 which I flashloaded on the ACA500+. I set the bootpriority of the 1.3 partition (CDH2:) one number higher than the 3.2 partition (CDH0:). So when you start the Amiga and choose Profile #2 in the ACA500+ menu you boot straight into WB 1.3. See the video on how to boot to WB 3.2 after that.

I had a very nice Commodore 1084S-P monitor. Not because it looks nice, but because it has all the inputs I need: for Amiga's, for C64/VIC20 and also for C128 40- and 80-column.

I was very displeased to discover it stopped working: no display. And I heard some noise, not high pitch but lower frequency. After reading this post on EAB I decided to go for a new Line transformer and Horizontal Output transistor.

I ordered both items at Dönberg Electronics in Ireland. For this particualr monitor you need the HR 7506 and the BU 508AF. It turned out is was really simple to remove the old components by first removing the mainboard assembly completely from the monitor. This is done by discoupling some connectors. (De)soldering of the Line transformer is quite easy because of the space that is available. The legs of the new transformer did not align 100% but that was easy remedied by bending them a little bit. After installing the two components and reassemble the monitor I had to adjust the two controllers on the Line transformer to get a focussed and crisp display. I also had to adjust the colors with the adjusters on the tube neck board. Everything is fine now!

The position of the Line transformer:

The removed old Line transformer with the box of the new one:

The position of the BU 508AF with it's clip to cool:

The result:

After soldering the Kickstart-adapter I could install the TF534. On the adapter I have KS 3.1.4 and KS1.3 with SCSI extension from Aminet.


The KS3.1.4 works 100%. I could get the WB1.3 to autoboot but with hickups. I could not yet identify the problem but the boot process is halted frequently. I can get it to proceed by pressing a key on the keyboard! Weird. But with the Workbench loaded the machine will freeze after a while. 

With AutoAddRAM from Aminet I can add the 4MB of the TF534 at 40000000 to 40400000. Under WB3.1.4 it is added automatically.

So far I am satisfied with this cheap accelerator.