Forumite Members › General Topics › Tech › PC Talk › Amiga Blast from the past
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Ed P.
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September 9, 2017 at 11:10 am #11538
Just for the retro lovers this link contains a technical description of the main parts of a Commodore Amiga and describes how they were put to good use.
At the time I could not afford to buy an Amiga, so my knowledge was very limited. I therefore found the blog interesting as it explained how the Amiga managed to perform the cool visual tricks, that were very difficult to replicate on competitor machines such as the Atari ST.
Sound seems to be missing from the chip list, but I guess the Amiga never really rivaled the ST in that one respect, so there is no reason to go to town over it.
September 9, 2017 at 2:13 pm #11543There was a time when amiga used to capure my imagination.
September 9, 2017 at 3:55 pm #11549I started with an A500, bought an A1200, got a cybergfx graphics card, Apollo 1260 processor (for free from a kind soul around the forums), IDE card and soundcard, and hacked the lot into a tower (I literally had to hack the tower back plate into pieces and put it back together in a different order to make it fit).
Coupled with a USB card (which never really worked that well using Poseidon drivers) and even 6 Mb broadband courtesy of Orange at the time, it kept me going until 1999.
I still have an image of my original setup, which still, by and large, works in fs-uae (though whdload seems to struggle with monitors, now, I should re-visit this).
I still fire it up from time to time.
Oh, and my own two flagship programs, AmigaDraughts and GHelpMUI both work just fine 🙂
Arch Linux, on a Ryzen 7 1800X, 32 GB, 5 (yes -5) HDs inc 5 SSDs, 4 RPi 3Bs + 1 RPi 4B - one as an NFS server with two more drives, PiHole (shut yours), Plex server, cloud server, and other random Pi stuff. Nice CoolerMaster case, 2 x NV GTX 1070 8GB, and a whopping 32" AOC 1440P monitor.
September 15, 2017 at 12:57 am #11731The people who did the Amiga chips are the same ones who designed the custom chips in the Atari 8 bits.
I still have the hardeware reference notes for the Atari’s complete with detailed fold out curcuit diagrams.
People may have heard of the ANTIC and GTIA display chips but the busiest of the lot was POKEY (potentiomiter/keyboard)
This chip contained the keyboard controler, 8 channel analogue to digital converter for reading the paddle controlers, 4 variable timers with interrupt ability, IRQ control, and 4 channel sound !
September 15, 2017 at 9:28 pm #11738POKEY was about the only chip that had the edge over the Amiga’s PAULA. Having said that, my Miggy had a soundcard, so boo 🙂
EDIT: This is how my Miggy looked – had to change some stuff to make it work with fs-uae (I had a Cybergfx card, which I had to substitute a Picasso for for the emulation). Dopus was fully licensed, and after I dumped it, I bought Dopus for Windows (highly recommended, by the way). Now as a Linux user, it’s no longer required.
Arch Linux, on a Ryzen 7 1800X, 32 GB, 5 (yes -5) HDs inc 5 SSDs, 4 RPi 3Bs + 1 RPi 4B - one as an NFS server with two more drives, PiHole (shut yours), Plex server, cloud server, and other random Pi stuff. Nice CoolerMaster case, 2 x NV GTX 1070 8GB, and a whopping 32" AOC 1440P monitor.
September 15, 2017 at 9:38 pm #11739I am envious of all you guys who grew up with the original computers, learning how to use code on the way. I did not use a computer until my late 50’s, and have often wished that I had taken time out to see what it was all about.
However, I was busy doing all kinds of other stuff and having some (often heavy) life experiences on the way. No point in regrets I guess, and I have learned a heck of a lot since that first beige box, with a Cyrix 586 and a whole 8MB of memory! Then I bought better bits and built a better PC, using these as well as floppies, remember them? –

I had 10 of them, then read about the “Click of Death” and formatted them, sold them, bought a bigger Hdd (whole 8GB!) I carried on learning, building and picking up so much from MM and the forum, still learning and getting help from all the good voices here. I just wish I had learned from the ‘bottom up’ but life is what it is I guess.
When the Thought Police arrive at your door, think -
I'm out.September 15, 2017 at 9:59 pm #117438Gb HD. lol. My first one was 20 Mb.
Arch Linux, on a Ryzen 7 1800X, 32 GB, 5 (yes -5) HDs inc 5 SSDs, 4 RPi 3Bs + 1 RPi 4B - one as an NFS server with two more drives, PiHole (shut yours), Plex server, cloud server, and other random Pi stuff. Nice CoolerMaster case, 2 x NV GTX 1070 8GB, and a whopping 32" AOC 1440P monitor.
September 15, 2017 at 11:58 pm #11744Another chip in the 8 bit Atari’s was a standard motorola GPIO. This was wired out to the joystick ports and was fully software programable for input or output.
At the time I connected up a couple of my own project boards and wondered why nobody else seemed interested.
Now we have the raspery Pi and people rave about it ?
September 16, 2017 at 7:29 am #11745Another chip in the 8 bit Atari’s was a standard motorola GPIO. This was wired out to the joystick ports and was fully software programable for input or output. At the time I connected up a couple of my own project boards and wondered why nobody else seemed interested. Now we have the raspery Pi and people rave about it
I can tell you why I did not get interested at that time – soldering.
Soldering with non-temperature controlled irons and clunky tips was at best hit or miss, and if you ever soldered in a (relatively expensive) clock chip it was 50:50 whether or not you zapped it with static. I really only got back into playing with electronics when decent low-cost solder stations and anti-static mats made their appearance.
The Pi is different again, you can do a lot with no soldering at all. Lego-like electronics.
September 16, 2017 at 1:28 pm #11747You have a point Ed
At the time I was doing part 1 of a City & Guilds 224 in radio and TV electronics and part of the practical exam was to solder up a tag board. Another part was soldering a simple circuit on Vero board.
We used a small tipped 15W iron but it was still a pain.
On the other hand we used bread boards for a lot of our class work.
September 16, 2017 at 3:10 pm #11749I had one of THESE in ’63/64. It was great fun using the cards on the boards with spring loaded terminals. Very few HR connections and no dangerous hot soldering iron for a 12 year old’s Mum to worry about.
Despite having access to all sort of soldering kit while working for the GPO, THIS was one of the handiest I ever used. Lasted for years until I couldn’t get replacement batteries for it any more.
September 16, 2017 at 7:51 pm #11750Wow, this got me thinking, and I found https://www.youtube.com/watch?v=cGloVvN9NXY.
Whilst interesting historically, more so for me, since I learned to program on an ICL 2966 (using COBOL) which is featured.
Just realised how old I am.
Arch Linux, on a Ryzen 7 1800X, 32 GB, 5 (yes -5) HDs inc 5 SSDs, 4 RPi 3Bs + 1 RPi 4B - one as an NFS server with two more drives, PiHole (shut yours), Plex server, cloud server, and other random Pi stuff. Nice CoolerMaster case, 2 x NV GTX 1070 8GB, and a whopping 32" AOC 1440P monitor.
September 16, 2017 at 8:48 pm #11751I remember a time it was said Amiga was coming back?
I struggled to leave my A600/A1200 and get on to PC/Windows.
Cheers
JohnSeptember 17, 2017 at 1:51 am #11752@johnbarry. I followed the link and noticed “This item does not ship to Haverfordwest, United Kingdom. ”
Now, I’m not even close to Havorfordwest (England rather than Wales for a start), and so it’s not a personalised message. What do you suppose they have against a Welsh town?
Arch Linux, on a Ryzen 7 1800X, 32 GB, 5 (yes -5) HDs inc 5 SSDs, 4 RPi 3Bs + 1 RPi 4B - one as an NFS server with two more drives, PiHole (shut yours), Plex server, cloud server, and other random Pi stuff. Nice CoolerMaster case, 2 x NV GTX 1070 8GB, and a whopping 32" AOC 1440P monitor.
September 17, 2017 at 3:33 pm #11788You had spring clips JayCee ?
Here is a pic of the book I still have. Wood screws and all !
September 17, 2017 at 3:40 pm #11789Oops try again
September 17, 2017 at 7:19 pm #11817On the YT video, at about 30 seconds, you can see the ( very elongated ohms sign ) pillar being pushed through the board and card, then the spring being pushed over it, in prep for the components to be connected and spring-tensioned. It was a very well thought out system ( for the time)!!
September 17, 2017 at 9:30 pm #11819I did mean you were LUCKY to have the springs JayCee. I had screw caps and wood screws.
September 17, 2017 at 9:32 pm #11820Lol?
October 13, 2017 at 10:02 am #12657Just a round-up. The real reason for Commodore’s failure. Those whom the Gods wish to destroy they first drive mad! There can be no other reason for the madness described in this half hour expose. e.g. shifting manufacturing to The Philippines just because some guy allegedly wanted to be closer to his mistress. The list of similar idiocies just goes on and on!
In my innocence I thought it was because they priced themselves out of the market. (My reason for never buying an Amiga)
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