Retrocomputing Stack Exchange
Retrocomputing Stack Exchange

Questions tagged [atari-800]

For questions relating to the Atari 800 8-bit computer

The Atari 800 is an 8-bit computer with up to 48KiB RAM. Its defining features are the two cartridge slots (later reduced to one) and modular, expansion card-based design.

Related tags:

41 questions
17
votes
3 answers

Atari 800 CPU - 6502 vs. Sally

Regarding the Atari 800... What's the difference between the 6502A and the 'Sally'? Is it simply a revision, or do the changes improve performance?
Brian Blake
  • 1,731
  • 9
  • 23
16
votes
1 answer

Why did the Atari 800 have a flying RF lead?

The Atari 800 had a nice range of output sockets: four joystick ports at the front: Along the right hand side, a serial interface (SIO) port, an S-video type output, and a power jack socket: However, at the rear there was a (rather daft) flying…
Greenonline
  • 4,296
  • 2
  • 19
  • 57
13
votes
1 answer

Will the Atari 800 work without any expansion cards installed?

The Atari 800 had 4 user accessible slots for adding RAM and a ROM card. Normally, your machine came with at least two cards from what I understand. The question is, if I removed all the cards from the machine, would it power up at all? Could you…
bjb
  • 16,259
  • 46
  • 141
10
votes
2 answers

ANTIC on-chip memory

http://atariage.com/forums/topic/172580-antic-decap-and-reverse-engineering/ contains an annotated die photo of ANTIC, the Atari 800 video chip. It's interestingly different from the VIC-II; in particular, there isn't the sheer bulk of sprite…
rwallace
  • 60,953
  • 17
  • 229
  • 552
2
votes
1 answer

Horizontal hold on Atari 800xl connected to flat screen tv

I recently picked up an Atari 800xl from ebay that seems really solid and I am using a DIN to RCA cable through an AV to HDMI adapter to connect it to my flat screen tv. This all seems to work except the signal on the TV seems to have a horizontal…
Steve
  • 21
  • 2