Cartridges have the advantage of being super-easy to use, essentially turning the computer into a console for game cartridges. But cartridges could also be used for programming languages and productivity software.

Because the cartridge contained the software on ROM, it could be used with computers that didn’t have much RAM or by people that didn’t yet own any peripherals, such as a tape drive or disk drive.

Out of all the computers that used cartridges, the Atari 8-bit computers probably had the most cartridges available for it. My Atari 8-bit cartridge collection keeps growing these past few years and a recent bundle purchase has added even more!

Let’s look at some of the new carts I’ve acquired, with a little commentary thrown in for good measure.

I now have a fairly large number of duplicate carts, which are now listed for sale on the Goto 10 store ($5 each), if you’re interested in filling out your collection.

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It is obviously not in the best of shape and didn’t even come with any screws to hold the case together, but everything else is here. Let’s take a closer look at this interesting bit of Atari history.

Just looking at the top case, you can see some unique things about the 1200XL. For starters, it has its function keys across the top. Plus, there are extra function keys not seen on any other Atari 8-bit computer: F1, F2, F3, F4. The Inverse key and Break key are also on the function key row. It’s not a bad idea to have break up there, but the Inverse key was used enough that it probably could have remained on the main keyboard.

The keyboard itself has a really nice feel to it. The keys have good feedback and it is easy to type on. It is about as good as the wonderful Atari 800 keyboard, much better than any 800XL keyboard I’ve tried and miles better than the stiff, yet mushy 130XE keyboard.

This is the underside of the top case. You can see the circuit board for the keyboard and not really much else.

Now we get to the main insides of the 1200XL, which contains the rather large motherboard. To be fair, this motherboard is more compact that the 800 design, but it is much bigger than the one that would be used by the 800XL.

Yes, it is dirty. I haven’t had a chance to clean it up or even test it out yet.

On the left side you can see a large plastic hood that looks like a vent, but it is actually the cartridge port. Just below that are two joystick ports, down from four in the 800. All subsequent 8-bit Atari computers would also only have two joystick ports.

That capacitor in the top right is gigantic! Surrounding the capacitor area is what looks like a metal heat sink.

Going back to the main motherboard, here are some of the notable chips:

• On the lower right is the 64K of RAM.

• Near the center, at the U23 location, is the 6520A Peripheral Interface Adapter (PIA).

• Above that, at the U21 location, is the famous MOS 6502C CPU.

• To the right of the CPU, at location U19, is the Atari GTIA (Graphics Television Interface Adapter) chip. It works in conjunction with the ANTIC chip to handle the amazing Atari 8-bit graphics.

• Speaking of the ANTIC, it is located below the GTIA at U20.

• To the right of ANTIC, at location U24, is the POKEY chip (POtentiometer/KEYboard integrated circuit).

• Above POKEY are the OS and BASIC ROMs1.

Overall, the motherboard is nicely laid out. Below are close-ups of the left and right sides.

On the outside left you can see the cartridge port and joystick ports. The cartridge port was a tight fit and some older Atari 800 cartridges would not fit in it.

The usual ports are in the back, which includes the SIO (Serial IO), RF output, monitor output, channel selector and power connector. The 1200XL uses the same power supply as an Atari 800.

I’m told the 1200XL does power on, but that there is no video. Right now it is in two separate parts. There are two ribbon cables on the top case that need to be connected to the motherboard.

This 1200XL is now my first “project computer”. I have the 1200XL Field Service manual and will be reviewing that to hopefully identify what I need to test and perhaps even figure out what needs to be fixed.

Atari 1200xl Home Computer Field Service Manual Rev01

50.1MB ∙ PDF file

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And if you liked this this short tour around the Atari 1200XL, you’ll probably also like these:

Compute! published many books for the Atari 8-bit computers and I’ve written about their first two already:

The other Compute! book I own is Compute!’s First Book of Atari Graphics. I don’t have Compute!’s Third Book of Atari, the Second Book of Atari Graphics or Compute!’s Atari Collection Volume 1.

But for this article, let’s dig into Mapping the Atari.

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Pay special attention to the pricing. Although the prices of these computers all look reasonable through today’s eyes, when you factor in inflation, they were all incredibly expensive, much more so than most computers today.

1979

The Atari 400/800 computers were announced at Winter CES in January. They didn’t start shipping until late fall of 1979.

The Atari 400 had a debut price of $500 (about $2200 in 2026) and came with 8K of RAM. It originally was intended to come with 4K of RAM (which is why it was called the 400), but RAM prices dropped enough to start with more RAM.

The Atari 800 had a debut price of $1000 (about $4500 in 2026), which included the BASIC programming cartridge, which was a separate purchase (about $80) for the Atari 400. It shipped with 16K of RAM, up from the 8K it was originally planned for (also why it was called the 800).

I’ve recently acquired an Atari 800. It’s a tank and I’ll be writing about it in more detail soon. Be sure to subscribe so you don’t miss it!

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1980

For a short time in 1980, the Atari 8-bit computers outsold the Apple II.

1982

In December, Atari announced the 1200XL computer, as a replacement for the Atari 800. This 1200XL had a sleek design that looked far more modern than the boxy brown tank design of the Atari 800. It debuted at a price of $900 (about $2900 in 2026) in early 1983.

The 1200XL sported 64K of RAM, to compete with the Commodore 64 that had been introduced in August, function keys and a self-test mode. The OS was updated as well.

Unfortunately, the 1200XL had significant compatibility issues with some 400/800 software and peripherals. Its price was also too high for what it offered and it was discontinued quickly.

I have recently acquired an Atari 1200XL. It’s in rough shape and unfortunately not fully functional, but I’ll be writing about more it here on Goto 10, so be sure to to subscribe so you don’t miss anything. Maybe I’ll be able to get it working!

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1983

At Summer CES in June, Atari announced several new computers: 600XL, 800XL, 1400XL, and 1450XLD. These were all styled the same as the 1200XL, which was discontinued.

At $200 (about $650 in 2026), the 600XL, with 16K RAM and a real keyboard, was the replacement for the Atari 400.

The 800XL, with 64K RAM and a $300 price (about $980 in 2026), was the replacement for the Atari 800. This model went on to become the biggest-selling Atari 8-bit computer.

The 1400XL was never released. It also had 64K of RAM and was about the same size as the 1200XL. It’s main feature was that it had a better memory management chip and a built-in modem.

The 1450XLD was planned to have the features of the 1400XL, with the addition of a built-in floppy drive. This computer was also never released, although prototypes do exist and have been shown at Atari shows.

1984

Atari, Inc. is sold to Jack Tramiel and renamed to Atari Corp. This new Atari inherited the existing stockpile of XL computers and sold them at heavy discounts to generate revenue while the Atari ST was being developed. Atari 800XL computers would be sold for $150 (about $470 in 2026) or less during this time.

1985

At January CES, Atari announces the XE line of 8-bit computers to replace the XL computers, the 65XE, 130XE and a 65XEM.

The 65XE, with 64K, is the direct replacement for the 800XL and retailed for just $100 (about $300 in 2026). Due to the large remaining stock of the 800XL that were sold off first, the 65XE is not common in the US

The 130XE, with 128K, retailed for $150 (about $450 in 2026). This model became available in spring of 1985 and was a popular upgrade for existing Atari 8-bit users.

The 65XEM was expected to be a 65XE with the powerful AMY music chip, but it never shipped.

I own a 130XE and I personally really like the styling of the XE computers. I think they do a great job of matching the ST styling and making for a unified product lineup. It’s unfortunate that the keyboards are so bad, however.

1987

In an effort to milk the last bits of value from the 8-bit computer line and to take advantage of the resurgent video game console market in the US, Atari repackaged the 65XE as a game machine called the XE Game System (XEGS) that sold for $200 (about $575 in 2026).

This system also separated the keyboard from the game console, making it the only Atari 8-bit with a detachable keyboard.

Unfortunately the XEGS did not make a dent in either the video game console market or the home computer market. Many current 8-bit users did upgrade to it to get the detachable keyboard, however.

1992

On January 1, 1992 Atari officially discontinued the 8-bit computer line. By this point the Atari 8-bit had really run its course with most people having switched to 16-bit systems or PCs.

Legacy

With a 12-year run, the Atari 8-bit line of computers was surprisingly long-lived. Considering how well-designed they were, this is not all surprising.

By the mid-80s, it made sense that Atari would mostly focus on its new 16-bit ST computers, but I am thankful that they kept the Atari 8-bit line around for as long as they did. The 130XE helped extend its usefulness and they even produced some useful peripherals, including the XEP80 80-column box, XM301 300 baud modem and XF551 double-side floppy drive.

Today, an Atari 8-bit computer is a great retro computing system to own. There is tons of software and games for it and plenty of original hardware that is still available at reasonable prices. Add-ons such as FujiNet make it easy to load software from SD cards or a network. Plus, there are lots of cartridges that you can use with original hardware without needing any other peripherals.

For most people, the 800XL is the best one to start with. It is plentiful, reliable, inexpensive and compatible with most software.

The Atari 800 is great for being the original, but it is bulky and its 48K means it can’t run some more modern software. Its keyboard is amazing, however!

The XE machines look great, but are far less common and much less reliable.

The 1200XL is really nice and might be the best system for a serious collector or retro computer enthusiast, but it is also the most expensive one to acquire since so few were made. It also will benefit from some modifications to improve compatibility.

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Are you looking for some fun retro gear to adorn your workspace? Then check out the Goto 10 store, which has some cool Atari-themed merch. The GEM desktop mouse pad has been the most popular so far. These will bring joy to your life and help support Goto 10!

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Also about this time, the Mega ST was available and it had the Blitter chip that helped speed up graphics operations, which helped give them improved performance over a standard ST that otherwise had the same 8Mhz 68000 CPU.

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