20

The question should rather be: "What could it have been?" - It never made it into an existing machine. According to some Internet lore, Kelly would have been the A3000+'s/AA3000's RAMDAC (digital video memory to analog RGB converter chip) that Commodore was initially planning to develop themselves. According to the same lore, during the development of ...


9

Here and here are lists of drives that work on Amigas either natively or that can be electrically modified to work on Amigas. Some of the drives are still in production. Those vendors you found selling drives for Amigas probably already made any necessary electrical modifications. Then, those drives are 1" tall, so if the Amiga 3000 takes 1-1/4" tall drives,...


8

The case of the Amiga 3000T was actually modified from the Commodore PC-60 III (their top-range PC). I doubt, however, that this makes it an easier find. Those monsters are sought after as well, apparently. Commodore was still fully functional when the PC-60 and 3000T were produced, so it is very unlikely a generic stock item from a third-party supplier.


8

The Amiga 3000 was offered in 4 configurations: 25MHz NTSC, 25MHz PAL, 16MHz NTSC, 16 MHz PAL. Besides the ID of "A3000 N" which appears on your A3000, the other possible ID is "A3000 P". It might be considered an obvious conclusion that the "N" refers to NTSC and the "P" refers to PAL configurations. However, I think that requires some more explanation. ...


8

Don't wait, just clip it. Come back when you're done. You look dangerously close to getting the goop on the motherboard which is effectively malignant cancer for electronics. Now that you've clipped the battery, you need to decide on what replacement you want to use. Unfortunately, the Amigas originally came with NiCd batteries which despite being prone to ...


7

On all my retro computers, I tend to replace the on-board batteries with cables and a double AA battery holder like this that I can store off-PCB (typically, I fix it somewhere within the computer using double-sided tape) to make sure leaking batteries can never again damage the PCB. Normal AAs by far won't last as long as the original or Li-Ion batteries, ...


7

The Amiga Kickstart ROM is modular. As such, you can build custom ROM images containing whatever selection of libraries, devices, and handlers you would like to be ROM resident. And, as you indicated, the total ROM image can be up to 1MB in size, even though all original Amigas shipped with a maximum of 512KB of ROM. Once you build a custom ROM image, ...


4

There can be all sorts of reasons for this that you will need to investigate. You can start by measuring the voltage between pin 5 and 15 (GND and 5V) to make sure they are being powered. If you have an oscilloscope check for activity on all the address pins too. The only way to test ZIPs is to put them in another known working machine. If you don't have ...


4

You might also try and look at modern solutions. The HxC floppy emulator which can be pricy or you could go with a GOTEK drive, and modify the enclosure to fit in the A3000. GOTEK drives have at the moment 2 firmwares, the Free which isn't being developed anymore. And you can contact the guy with the HxC, whom also makes a firmware for this device. No more ...


2

Even if the battery powered memory loses its contents, you don't really risk losing the ability to boot. The settings that are stored in the memory for the on-board SCSI controller are all performance-related, if the battery data is lost they would all revert to their defaults, that are (appropriately) the more conservative choice. The only non-...


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