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Service and Repair (Country)
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AmigaSource.com - Temp Year
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Nov 30, -0001
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id: 3421 |
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IF you've ever been curious about what PC gaming was like in its early days then the Amiga 500 Mini is the classic console for you. |
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Nov 30, -0001
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id: 5203 |
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{Thread @ EAB discussing the procedures to mod an A500 to an A500+} |
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Nov 30, -0001
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id: 4175 |
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There were four major revisions of the Amiga 500 motherboard released, and that matters if you are trying to upgrade them. Fortunately, if you know what to look for, you can quickly distinguish between all four, and you can even identify them without opening the case. Although it is certainly easier to identify them if you can see the entire board. |
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Nov 30, -0001
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id: 4900 |
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I saw this RGBS/VGA to YPbPr adapter on ebay for around $30 and thought I'd try it out. I already had a buffered VGA adapter (bought off ebay also) so I hooked it up with Amiga --> buffered VGA --> RGBS to YPrPb --> component output --> TV. At first, I thought it didn't work because the first TV I tried didn't support the component signals. I got a black screen. But I kept trying different TVs and about half of them would work, and when it worked, the output was absolutely beautiful. The TV deinterlacing was often perfect so you could use interlaced modes without any jitter. |
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Nov 30, -0001
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id: 5045 |
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My personal list (Golden Child's List) of monitors that will sync to Amiga 500 NTSC 15khz signals with a buffered VGA adapter (purchased from ebay) |
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Nov 30, -0001
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id: 5887 |
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Got an Amiga 500 plus? Haven’t removed or replaced the motherboard battery yet? Well if you haven’t here’s the bad news; it’s got a good chance of having leaked on your motherboard. And if it has, and isn’t rectified that battery electrolyte could well eat away at the tracks on the PCB eventually rendering it useless. {...} This short tutorial only covers the removal of the battery, either by breaking away or desoldering. It does not cover the replacement of the original battery with a modern ‘coin battery’ and holder which can be purchased from the Amiga Kit store. I personally have never found a need to have a clock battery on my A500+ motherboard, therefore removal is all I cover here. |
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Nov 30, -0001
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id: 3863 |
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The power supply of my Amiga 500 is a bit unreliable. I’ve had some issues with the machine where the PSU could be the culprit, so I thought that it would be better to get a new power supply. {...} Rather than taking that route, I decided to use a modern PSU. Ian Stedman from the UK has designed an adapter that allows an ATX PSU to be used for powering the Amiga. He sells this adapter for reasonable price of ?10. However, the tricky part is to get the PSU connector. Amiga 500 uses a strange rectangular 5-pin DIN connector. This connector is extremely difficult to source. |
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Nov 30, -0001
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id: 3864 |
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My last post – quite a while ago already – was about building a new power supply for Amiga 500. In the comments I was contacted by an Amiga owner (or now former Amiga owner) who wanted to donate his Amiga 500 with a broken power supply. Thanks Johan for the donation! {...} In order to get this Amiga back to life, I had three options: fix the power supply, build a new power supply, or buy a new power supply. Yes, new power supplies for Amiga 500 are manufactured again by Electroware! As I had already built a power supply and there’s no fun in buying a new one, I decided to repair this one. |
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Nov 30, -0001
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id: 3607 |
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Revitalizing an Amiga 500. While seriously on a retro-trip I thought it to be cool having an Amiga 500 again. I found a well treated machine on EBay that even came along with an original Commodore A590 disk drive. Needless to say, a machine from the 80s might well be in good optical shape but a lot can happen in a time period of nearly 30 years. |
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Nov 30, -0001
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id: 3867 |
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I bought an Amiga 500 as my first computer in 1988. I later sold it and bought Amiga 2000, so this is not the same machine I used to own. Instead, I got this one from a friend in late 1990’s for free as it was broken. The problem was easy to fix – there were just some broken solder joints in the power supply after it had been dropped. |
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Nov 30, -0001
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id: 4501 |
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Quick documentation of the pinout of making a replacement RGB cable for the Amiga 500 to connect to the Amiga 1084 Monitor, primarily because I couldn’t find a pinout diagram online that worked properly. |
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Nov 30, -0001
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id: 2484 |
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This is a kit which will allow you to convert a (preferably non-functional) Commodore Amiga 500 or Commodore Amiga 500+ into a USB keyboard which can be used just like any other USB keyboard. It also includes two joystick ports which allow you to use standard 9 pin Commodore / Atari style joysticks as USB joysticks (for joysticks only, they do not support the Amiga mouse), and two audio jacks to connect to provide rear audio output from a Raspberry Pi or other single board computer. |
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Verified:
Nov 30, -0001
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id: 4907 |
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After building an internal IDE port for the Amiga 500, it was time to try an external port that connects to the expansion slot. This happened to be another lesson in taking-your-time-and-doing-proper-research. |
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Nov 30, -0001
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id: 3958 |
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NB: In writing this post, I realised it's effectively a mini review of the ZuluSCSI... I own many Commodore Amigas, and most of them actually work. On one of my Amiga 500s, I've been recently trying to get a decent SCSI hard disk drive working via a GVP Impact II A500-HD+ sidecar expansion unit. This expansion unit contains a GVP SCSI controller, an internal 50-pin IDC connector for an internal SCSI drive and a 25-pin D-sub connector on the back for any external SCSI devices I may want to connect. It also has four 30-pin SIMM sockets, which I have populated with four 1MB SIMMs, providing an additional 4MB of FAST RAM to the A500. The GVP is separately powered with its own 12v+5v brick-style PSU – more on that later. Here is the Amiga in question on my workbench. The eagle-eyed among you will see where I am going with this post. |
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Nov 30, -0001
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id: 4904 |
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Whilst looking for side-car Amiga A590 Hard drives for the Amiga 500, I found this deisgn at PCBWay of an internal IDE interface. The design seemed pretty straight-forward, but it did have its caveats. The main one was that this device does not Auto-Configure and therefore needs a boot floppy to use it. |
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Nov 30, -0001
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id: 3956 |
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I am a happy owner of quite a few A500s in pretty crappy shape. I’ve finally managed to start some serious work with modding ’em. I won’t post single-machine mods but rather a several mods in a few Amigas that I’ve pimped. As usual, I’ve started with simple things |
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Nov 30, -0001
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id: 4033 |
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I needed to write a blog post showing different RAM hax/configs on Amiga 500 8A motherboard to serve as a reminder for future Me. When working with my stash of A500s, I’ve found two common motherboard revisions – 6A and 8A. I will focus on 8A here but some configs can be used in 6A too. The main reason is that 8A mobos are the latest, where 8375 AGNUS was used and it supports up to 2MB of ChipRAM. Also, I’ve already described the 6A ChipRAM mod in one of the previous posts. Just to clarify it a bit, Rev.8 was used in A500plus AND in standard A500 but with unpopulated RTC, battery, less RAM, etc. |
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Nov 30, -0001
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id: 4280 |
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I’ve been slowly but surely branching out into Amigas from Commodore’s 8-bit range of computers, but one of the first computers I bought was a Commodore Amiga 500+. This turned out to be a somewhat special unit, with serial number “000657”. The A500+ is a 16-bit computer from the 1990s, and is a more capable version of the A500 on which it is based- it features the same 7.16MHz 68000 CPU and full-sized keyboard, but has ECS graphics (as opposed to OCS graphics), 1MB Chip RAM, and a battery-backed RTC. |
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Verified:
Nov 30, -0001
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id: 5552 |
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This is an adapter board to retrofit a 2MB Agnus into an Amiga 500/2000 and also includes 2MB of chip ram. It is based on LIV2's design but is easier to solder and has been remade in KiCad 6. At present this particular design has only been tested on an Amiga 2000. It should, however, work on Amiga 500s as well, with the caveat that it might get in the way of the keyboard in the revision 5 Amiga 500 (if you try this please let me know). |
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Author:
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Verified:
Nov 30, -0001
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id: 2784 |
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Floppy drives have an sensor to detect track zero position which tells the drive the positioning of the first track on the disk(hence all tracks). On some drives it is mounted on the same PCB as the capacitors and removing the PCB will dislocate the adjustment for track 0. If the screw holes for the PCB are elongated (thus allowing for adjustment) then there is a good possibility the track zero sensor is on the PCB. One way to determine bad track zero adjustment is by formatting a disk on that device. It will manage to read and write a disk formatted by itself, trying to read a disk written on another known good drive will fail because the track offsets differ. Adjustment of the zero stop should be done using proper equipment and not by trial and error. .. in other words, (TL;DR) do not touch the track zero sensor adjustment |
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Author:
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Verified:
Nov 30, -0001
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id: 4582 |
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Block diagram of the proposed #Amiga 5000 system created by Dave Haynie in 1991. This document was generously contributed by Randell Jesup. |
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Author:
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Verified:
Nov 30, -0001
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id: 4484 |
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Block diagram of the proposed #Amiga 5000 system created by Dave Haynie in 1991. This document was generously contributed by Randell Jesup. |
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Author:
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Verified:
Nov 30, -0001
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id: 4539 |
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{Last part of a series documenting the development of a simple game for the A500} |
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Author:
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Nov 30, -0001
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id: 5801 |
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Last time, we got a toolchain working that will let us compile code for the Amiga 500, and we compiled some code with it. Now let’s actually look at the code we compiled, and discover how it is that programs invoke operating systems services on the Amiga. {...} Using Libraries in C. Let’s start by considering the source code line by line. Here it is in a friendlier format than “typed into a screen-capped console window”: |
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Author:
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Verified:
Nov 30, -0001
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id: 5855 |
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Model of a classic computer from the 90s. Commodore Amiga 600.Model made from original product in cinema 4d R20, rendered using Corona.The package contains files: *.c4d, *.3ds, *.fbx, *.obj, *.stl and 13 renders. |
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