Its a smallish unit with 4 serial ports and one parallel port plus 2 SIO ports that provide pass through for other devices :
- IMG20260226125050.jpg (129.73 KiB) Viewed 1151 times
It's aesthetic matches that of the 400/800 range of machines, and I'm not sure if there was any replacement for it when the XL range arrived.
Just four screws hold the lid on:
- IMG20260226125128.jpg (205.19 KiB) Viewed 1151 times
And once inside it's built very similarly to other Atari products.
The metal cover has a removable cover that allows access to what I can only assume is a ROM:
- IMG20260226125614.jpg (243.3 KiB) Viewed 1151 times
And once the entire cover is off you can see the ICs below:
- IMG20260226125435.jpg (291.46 KiB) Viewed 1151 times
From what I can tell the IC's Marked CO 10750 are known as the 6532 RIOT and were also used in the 2600.
The two other large IC's are the CO 10745-03 which is apparently a 6507 CPU as also found in the 2600, and the CO12099-03 and that is the ROM.
So a bit like the Atari 1050 FDD, this about half a 2600...
Will have to see if I can make it work next.